פתיחה אנגלית – הבדלי גרסאות

תוכן שנמחק תוכן שנוסף

בשורה

גרסה מ־22:15, 6 ביוני 2010

ערך זה עוסק בפתיחה במשחק שחמט. אם התכוונתם למהלך בבורסה, ראו פתיחה אנגלית (בורסה).

פתיחה אנגלית היא פתיחה בשחמט. בפתיחה זו הלבן נמנע מלכבוש את המרכז (למשל על ידי 1. ד2-ד4) והוא מבכר לנהל מאבק עקיף על השליטה בו על ידי הפתיחה האגפית: 1. ג4 ..., ובד בבד גם מנסה למנוע את כיבושו על ידי השחור.

הפתיחה האנגלית מקוטלגת בשיטת אנציקלופדיית פתיחות שחמט בין A10-A39‏‏.^[1]

להלן אחת מהאפשרויות המאפיינות את הפתיחה האנגלית בנוסח הנקרא "נוסח ארבעת הפרשים".

1. ג4 ה5
(אחרי 1...ה6 ד4 ד5 מגיעים לגמביט מלכה נדחה)

2. פג3 ...

העמדה לאחר המסע השני של הלבן

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7
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1
	א	ב	ג	ד	ה	ו	ז	ח

הפתיחה האנגלית לאחר המסע השני
היא ההגנה הסיציליאנית בהיפוך צבעים

2. ... פו6 3. פו3 פג6 4. ז3 רב4

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	א	ב	ג	ד	ה	ו	ז	ח

העמדה לאחר המסע הרביעי

המשך אפשרי:

5. רז2 0-0
6. 0-0 ה4
7. פז5 ר:ג3
8. ב:ג3 צה8

8
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	א	ב	ג	ד	ה	ו	ז	ח

העמדה לאחר המסע הששי

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	א	ב	ג	ד	ה	ו	ז	ח

העמדה לאחר המסע השביעי

8
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3
2
1
	א	ב	ג	ד	ה	ו	ז	ח

העמדה לאחר המסע השמיני

הערות שוליים

^ ‏

A10 English1.c4
A10 English: 1...g51.c4 g5
A10 English: 1...g5 2.d41.c4 g5 2.d4
A10 English: Myers Gambit1.c4 g5 2.d4 Bg7
A10 English: 1...Nc61.c4 Nc6
A10 English: 1...Nc6 2.Nc31.c4 Nc6 2.Nc3
A10 English: Jהnisch Gambit1.c4 b5
A10 English: Vector1.c4 d5
A10 English: 1...b61.c4 b6
A10 English: 1...b6 2.Nf31.c4 b6 2.Nf3
A10 English: 1...b6 2.Nf3 Bb71.c4 b6 2.Nf3 Bb7
A10 English: 1...b6 2.Nc31.c4 b6 2.Nc3
A10 English: 1...b6 2.Nc3 e61.c4 b6 2.Nc3 e6
A10 English: 1...b6 2.Nc3 e6 3.e41.c4 b6 2.Nc3 e6 3.e4
A10 English: 1...b6 2.Nc3 Bb71.c4 b6 2.Nc3 Bb7
A10 English: 1...b6 2.Nc3 Bb7 3.e41.c4 b6 2.Nc3 Bb7 3.e4
A10 English: 1...b6 2.Nc3 Bb7 3.e4 e61.c4 b6 2.Nc3 Bb7 3.e4 e6
A10 English: 1...d61.c4 d6
A10 English: 1...d6 2.Nc31.c4 d6 2.Nc3
A10 English: 1...d6 2.Nf31.c4 d6 2.Nf3
A10 English: 1...g61.c4 g6
A10 English: 1...g6 2.g31.c4 g6 2.g3
A10 English: 1...g6 2.Nc31.c4 g6 2.Nc3
A10 English: 1...g6 2.Nc3 Bg71.c4 g6 2.Nc3 Bg7
A10 English: 1...g6 2.Nc3 Bg7 3.g31.c4 g6 2.Nc3 Bg7 3.g3
A10 English: 1...g6 2.Nf31.c4 g6 2.Nf3
A10 English: 1...g6 2.Nf3 Bg71.c4 g6 2.Nf3 Bg7
A10 English: 1...g6 2.e41.c4 g6 2.e4
A10 English: Adorjan Defence1.c4 g6 2.e4 e5
A10 English: Anglo-Dutch1.c4 f5
A10 English: Wade Gambit1.c4 f5 2.g4
A10 English: Anglo-Dutch, 2.g31.c4 f5 2.g3
A10 English: Anglo-Dutch, 2.g3 Nf61.c4 f5 2.g3 Nf6
A10 English: Anglo-Dutch, 2.g3 Nf6 3.Bg21.c4 f5 2.g3 Nf6 3.Bg2
A10 English: Anglo-Dutch, 2.Nc31.c4 f5 2.Nc3
A10 English: Anglo-Dutch, 2.Nc3 Nf61.c4 f5 2.Nc3 Nf6
A10 English: Anglo-Dutch, 2.Nc3 Nf6 3.g31.c4 f5 2.Nc3 Nf6 3.g3
A10 English: Anglo-Dutch, 2.Nc3 Nf6 3.g3 g61.c4 f5 2.Nc3 Nf6 3.g3 g6
A10 English: Anglo-Dutch, 2.Nf31.c4 f5 2.Nf3
A10 English: Anglo-Dutch, 2.Nf3 e61.c4 f5 2.Nf3 e6
A10 English: Anglo-Dutch, 2.Nf3 Nf61.c4 f5 2.Nf3 Nf6
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.Nc31.c4 f5 2.Nf3 Nf6 3.Nc3
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g31.c4 f5 2.Nf3 Nf6 3.g3
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e61.c4 f5 2.Nf3 Nf6 3.g3 e6
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg21.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 c6 5.O-O d51.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 c6 5.O-O d5
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be71.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O1.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O1.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.Nc31.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.Nc3
A11 English: Caro-Kann Defence1.c4 c6
A11 English: Caro-Kann Defence, 2.g31.c4 c6 2.g3
A11 English: Caro-Kann Defence, 2.g3 Nf61.c4 c6 2.g3 Nf6
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d51.c4 c6 2.g3 Nf6 3.Bg2 d5
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf31.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf51.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O1.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O e6 6.d31.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O e6 6.d3
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg41.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg4
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg4 5.O-O1.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg4 5.O-O
A11 English: Caro-Kann Defence, 2.Nc31.c4 c6 2.Nc3
A11 English: Caro-Kann Defence, 2.Nc3 d51.c4 c6 2.Nc3 d5
A11 English: Caro-Kann Defence, 2.Nf31.c4 c6 2.Nf3
A11 English: Caro-Kann Defence, 2.Nf3 Nf61.c4 c6 2.Nf3 Nf6
A11 English: Caro-Kann Defence, 2.Nf3 d51.c4 c6 2.Nf3 d5
A11 English: Caro-Kann Defence, 3.g31.c4 c6 2.Nf3 d5 3.g3
A11 English: Caro-Kann Defence, 3.g3 Bg41.c4 c6 2.Nf3 d5 3.g3 Bg4
A11 English: Caro-Kann Defence, 3.g3 Bg4 4.Bg21.c4 c6 2.Nf3 d5 3.g3 Bg4 4.Bg2
A11 English: Caro-Kann Defence, 3.e31.c4 c6 2.Nf3 d5 3.e3
A11 English: Caro-Kann Defence, 3.e3 Nf61.c4 c6 2.Nf3 d5 3.e3 Nf6
A11 English: Caro-Kann Defence, 3.e3 Nf6 4.Nc31.c4 c6 2.Nf3 d5 3.e3 Nf6 4.Nc3
A12 English: Caro-Kann Defence, 3.b31.c4 c6 2.Nf3 d5 3.b3
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg41.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg4 5.Bg21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg4 5.Bg2 e61.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6 6.Bb21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6 6.Bb2
A12 English: London Defence, 4...Bf51.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5
A12 English: London Defence, 4...Bf5 5.Bg21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 5.Bg2
A12 English: London Defence, 4...Bf5 5.Bg2 e61.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 5.Bg2 e6
A12 English: London Defence, 4...Bf5 5.Bg2 e6 6.Bb21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 5.Bg2 e6 6.Bb2
A12 English: Caro-Kann Defence, 3.b3 Nf6 4.Bb21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2
A12 English: Bled Variation, 4...g61.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 g6
A12 English: Bled Variation, 4...g6 5.e3 Bg71.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 g6 5.e3 Bg7
A12 English: New York-London Defence1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 Bf5
A12 English: Capablanca Variation1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 Bg4
A12 English: Bogoljubow Variation1.c4 c6 2.Nf3 d5 3.b3 Bg4
A13 English: 1...e61.c4 e6
A13 English: 1...e6 2.g31.c4 e6 2.g3
A13 English: 1...e6 2.g3 d51.c4 e6 2.g3 d5
A13 English: 1...e6 2.g3 d51.c4 e6 2.g3 d5 3.Bg2
A13 English: 1...e6 2.Nc31.c4 e6 2.Nc3
A13 English: 1...e6 2.Nc3 Bb41.c4 e6 2.Nc3 Bb4
A13 English: 1...e6 2.Nc3 d51.c4 e6 2.Nc3 d5
A13 English: 1...e6 2.Nf31.c4 e6 2.Nf3
A13 English: 1...e6 2.Nf3 Nf61.c4 e6 2.Nf3 Nf6
A13 English: 1...e6 2.Nf3 Nf6 3.g31.c4 e6 2.Nf3 Nf6 3.g3
A13 English: Romanishin Gambit1.c4 e6 2.Nf3 Nf6 3.g3 a6 4.Bg2 b5
A13 English: 1...e6 2.Nf3 d51.c4 e6 2.Nf3 d5
A13 English: Agincourt Variation, 3.b31.c4 e6 2.Nf3 d5 3.b3
A13 English: Wimpey System, 3.b3 Nf6 4.Bb2 c5 5.e31.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3
A13 English: Wimpey System, 3.b3 Nf6 4.Bb2 c5 5.e3 Nc61.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3 Nc6
A13 English: Agincourt Variation, 3.g31.c4 e6 2.Nf3 d5 3.g3
A13 English: Kurajica Defence1.c4 e6 2.Nf3 d5 3.g3 c6
A13 English: Kurajica Defence, 4.Qc21.c4 e6 2.Nf3 d5 3.g3 c6 4.Qc2
A13 English: Neo-Catalan1.c4 e6 2.Nf3 d5 3.g3 Nf6
A13 English: Neo-Catalan, 4.Bg21.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2
A13 English: Neo-Catalan, 4...c61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c6
A13 English: Neo-Catalan, 4...c6 5.b31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c6 5.b3
A13 English: Neo-Catalan, 4...c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c5
A13 English: Neo-Catalan, 4...c5 5.O-O1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c5 5.O-O
A13 English: Neo-Catalan Accepted1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4
A13 English: Neo-Catalan Accepted, 5.Qa4+1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd71.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.O-O1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.O-O
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc41.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc4 a61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc4 c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5
A14 English: Neo-Catalan Declined1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7
A14 English: Neo-Catalan Declined1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O
A14 English: Neo-Catalan Declined, 5...c61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c6
A14 English: Neo-Catalan Declined, 5...c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c5
A14 English: Neo-Catalan Declined, 5...O-O1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O
A14 English: Neo-Catalan Declined, 5...O-O 6.b31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 b61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 b6
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 b6 7.Bb2 Bb71.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 b6 7.Bb2 Bb7 8.e31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7 8.e3
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c5 7.Bb21.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c5 7.Bb2 Nc61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c5 7.Bb2 Nc6 8.e31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6 8.e3
A15 English: Anglo-Indian1.c4 Nf6
A15 English: Anglo-Indian, Polish1.c4 Nf6 2.b4
A15 English: Anglo-Indian, 2.g31.c4 Nf6 2.g3
A15 English: Anglo-Indian, 2.g3 e61.c4 Nf6 2.g3 e6
A15 English: Anglo-Indian, 2.g3 e6 3.Bg21.c4 Nf6 2.g3 e6 3.Bg2
A15 English: Anglo-Indian, 2.g3 g61.c4 Nf6 2.g3 g6
A15 English: Anglo-Indian, 2.g3 g6 3.Bg2 Bg71.c4 Nf6 2.g3 g6 3.Bg2 Bg7
A15 English: Anglo-Indian, 2.Nf31.c4 Nf6 2.Nf3
A15 English: Anglo-Indian, 2.Nf3 g61.c4 Nf6 2.Nf3 g6
A15 English: Anglo-Indian, 2.Nf3 g6 3.g3 Bg7 4.Bg21.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2
A15 English: Anglo-Indian, 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O
A16 English: Anglo-Indian, 2.Nc31.c4 Nf6 2.Nc3
A16 English: Anglo-Indian, 2.Nc3 Nc61.c4 Nf6 2.Nc3 Nc6
A16 English: Anglo-Indian, 2.Nc3 c61.c4 Nf6 2.Nc3 c6
A16 English: Anglo-Indian, 2.Nc3 c6 3.e41.c4 Nf6 2.Nc3 c6 3.e4
A16 English: Anglo-Indian, 2.Nc3 c6 3.e4 d51.c4 Nf6 2.Nc3 c6 3.e4 d5
A16 English: Anglo-Indian, 2.Nc3 d61.c4 Nf6 2.Nc3 d6
A16 English: Anglo-Indian, 2.Nc3 g61.c4 Nf6 2.Nc3 g6
A16 English: Anglo-Indian, 2.Nc3 g6 3.e41.c4 Nf6 2.Nc3 g6 3.e4
A16 English: Anglo-Indian, 2.Nc3 g6 3.g31.c4 Nf6 2.Nc3 g6 3.g3
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg71.c4 Nf6 2.Nc3 g6 3.g3 Bg7
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg21.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.e41.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.e4
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf31.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O
A16 English: Anglo-Grnfeld1.c4 Nf6 2.Nc3 d5
A16 English: Anglo-Grnfeld, 3.Nf31.c4 Nf6 2.Nc3 d5 3.Nf3
A16 English: Anglo-Grnfeld, 3.Nf3 g61.c4 Nf6 2.Nc3 d5 3.Nf3 g6
A16 English: Anglo-Grnfeld, 3.Nf3 g6 4.Qa4+1.c4 Nf6 2.Nc3 d5 3.Nf3 g6 4.Qa4+
A16 English: Anglo-Grnfeld, 3.Nf3 g6 4.g31.c4 Nf6 2.Nc3 d5 3.Nf3 g6 4.g3
A16 English: Anglo-Grnfeld, 3.cxd51.c4 Nf6 2.Nc3 d5 3.cxd5
A16 English: Anglo-Grnfeld, Smyslov Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3
A16 English: Anglo-Grnfeld, Smyslov Variation, 6.bxc31.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3
A16 English: Anglo-Grnfeld, Smyslov Variation, 6.bxc3 Bg71.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3 Bg7
A16 English: Anglo-Grnfeld, Smyslov, 7.Rb11.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3 Bg7 7.Rb1
A16 English: Anglo-Grnfeld, Czech Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb6
A16 English: Anglo-Grnfeld, 4.Nf31.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3
A16 English: Anglo-Grnfeld, 4.Nf3 g61.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6
A16 English: Anglo-Grnfeld, 4.Nf3 g6 5.g31.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3
A16 English: Anglo-Grnfeld, 4.Nf3 g6 5.g3 Bg71.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7
A16 English: Anglo-Grnfeld, Korchnoi Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7 6.Bg2 e5
A16 English: Anglo-Grnfeld, Andersson-Bצצk Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.e4
A16 English: Anglo-Grnfeld, Andersson-Bצצk, Queenswap1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.e4 Nxc3 6.dxc3 Qxd1+ 7.Kxd1
A16 English: Anglo-Grnfeld, 4.Nf3 g6 5.Qa4+1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.Qa4+
A17 English: Anglo-Indian, 2.Nc3 e61.c4 Nf6 2.Nc3 e6
A17 English: Anglo-Indian, 2.Nc3 e6 3.g31.c4 Nf6 2.Nc3 e6 3.g3
A17 English: Anglo-Indian, 2.Nc3 e6 3.Nf31.c4 Nf6 2.Nc3 e6 3.Nf3
A17 English: Anglo-Indian, 2.Nc3 e6 3.Nf3 d51.c4 Nf6 2.Nc3 e6 3.Nf3 d5
A17 English: Anglo-Queen's Indian1.c4 Nf6 2.Nc3 e6 3.Nf3 b6
A17 English: Anglo-Queen's Indian, 4.e41.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4
A17 English: Anglo-Queen's Indian, Romanishin1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4 Bb7 5.Bd3
A17 English: Anglo-Queen's Indian, 4.g31.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3
A17 English: Anglo-Queen's Indian, 4.g3 Bb7 5.Bg21.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2
A17 English: Anglo-Queen's Indian, 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O
A17 English: Anglo-Queen's Indian, 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re11.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re1
A17 English: Nimzo-English1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4
A17 English: Nimzo-English, 4.g31.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.g3
A17 English: Nimzo-English, 4.Qc21.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.Qc2
A17 English: Nimzo-English, 4.Qc2 O-O1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.Qc2 O-O
A18 English: Mikenas1.c4 Nf6 2.Nc3 e6 3.e4
A18 English: Mikenas, Kevitz Defence1.c4 Nf6 2.Nc3 e6 3.e4 Nc6
A18 English: Mikenas, 3...d61.c4 Nf6 2.Nc3 e6 3.e4 d6
A18 English: Mikenas, 3...d6 4.d4 Be71.c4 Nf6 2.Nc3 e6 3.e4 d6 4.d4 Be7
A18 English: Mikenas, French Variation1.c4 Nf6 2.Nc3 e6 3.e4 d5
A18 English: Mikenas, French, 4.cxd51.c4 Nf6 2.Nc3 e6 3.e4 d5 4.cxd5
A18 English: Mikenas, Flohr Variation1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5
A18 English: Mikenas, Flohr, 4...Ne41.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 Ne4
A18 English: Mikenas, Flohr, 4...d41.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4
A18 English: Mikenas, Flohr, 7.Nf31.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.Nf3
A18 English: Mikenas, Flohr, 7.d41.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4
A18 English: Mikenas, Flohr, 7.d4 c51.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 c5
A18 English: Mikenas, Flohr, 7.d4 e51.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 e5
A19 English: Mikenas, Sicilian Variation1.c4 Nf6 2.Nc3 e6 3.e4 c5
A19 English: Mikenas, Sicilian, 4.e51.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5
A19 English: Mikenas, Sicilian, 4.e5 Ng81.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8
A19 English: Mikenas, Nei Gambit1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.d4
A19 English: Mikenas, 5.Nf31.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3
A19 English: Mikenas, 5.Nf3 Nc61.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6
A19 English: Mikenas, 5.Nf3 Nc6 6.d41.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6 6.d4
A19 English: Mikenas, 6.d4 cxd4 7.Nxd4 Nxe51.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6 6.d4 cxd4 7.Nxd4 Nxe5
A20 English: KID, 1...e51.c4 e5
A20 English: KID, 2.d31.c4 e5 2.d3
A20 English: KID, 2.e31.c4 e5 2.e3
A20 English: KID, 2.g31.c4 e5 2.g3
A20 English: KID, 2.g3 f51.c4 e5 2.g3 f5
A20 English: KID, 2.g3 g61.c4 e5 2.g3 g6
A20 English: KID, 2.g3 g6 3.Bg21.c4 e5 2.g3 g6 3.Bg2
A20 English: KID, 2.g3 g6 3.Bg2 Bg71.c4 e5 2.g3 g6 3.Bg2 Bg7
A20 English: KID, 2.g3 c61.c4 e5 2.g3 c6
A20 English: KID, 2.g3 c6 3.d41.c4 e5 2.g3 c6 3.d4
A20 English: KID, 2.g3 d61.c4 e5 2.g3 d6
A20 English: KID, 2.g3 d6 3.Bg21.c4 e5 2.g3 d6 3.Bg2
A20 English: KID, 2.g3 Nc61.c4 e5 2.g3 Nc6
A20 English: KID, 2.g3 Nc6 3.Bg21.c4 e5 2.g3 Nc6 3.Bg2
A20 English: KID, 2.g3 Nf61.c4 e5 2.g3 Nf6
A20 English: KID, 2.g3 Nf6 3.Bg21.c4 e5 2.g3 Nf6 3.Bg2
A20 English: KID, 2.g3 Nf6 3.Bg2 Bc51.c4 e5 2.g3 Nf6 3.Bg2 Bc5
A20 English: KID, 2.g3 Nf6 3.Bg2 Nc61.c4 e5 2.g3 Nf6 3.Bg2 Nc6
A20 English: KID, 2.g3 Nf6 3.Bg2 c61.c4 e5 2.g3 Nf6 3.Bg2 c6
A20 English: KID, 2.g3 Nf6 3.Bg2 d51.c4 e5 2.g3 Nf6 3.Bg2 d5
A20 English: KID, Nimzowitsch1.c4 e5 2.Nf3
A20 English: KID, Nimzowitsch, 2...Nc61.c4 e5 2.Nf3 Nc6
A20 English: KID, Nimzowitsch, Flohr Variation1.c4 e5 2.Nf3 e4
A21 English: KID, 2.Nc31.c4 e5 2.Nc3
A21 English: KID, 2.Nc3 f51.c4 e5 2.Nc3 f5
A21 English: KID, 2.Nc3 f5 3.g3 Nf61.c4 e5 2.Nc3 f5 3.g3 Nf6
A21 English: KID, 2.Nc3 f5 3.g3 Nf6 4.Bg21.c4 e5 2.Nc3 f5 3.g3 Nf6 4.Bg2
A21 English: KID, 2.Nc3 g61.c4 e5 2.Nc3 g6
A21 English: KID, 2.Nc3 g6 3.g3 Bg7 4.Bg21.c4 e5 2.Nc3 g6 3.g3 Bg7 4.Bg2
A21 English: KID, 2.Nc3 d61.c4 e5 2.Nc3 d6
A21 English: KID, Keres Variation1.c4 e5 2.Nc3 d6 3.g3 c6
A21 English: KID, Keres Variation, 4.Bg21.c4 e5 2.Nc3 d6 3.g3 c6 4.Bg2
A21 English: KID, 2.Nc3 d6 3.d41.c4 e5 2.Nc3 d6 3.d4
A21 English: KID, 2.Nc3 d6 3.g31.c4 e5 2.Nc3 d6 3.g3
A21 English: KID, 2.Nc3 d6 3.Nf31.c4 e5 2.Nc3 d6 3.Nf3
A21 English: KID, 2.Nc3 d6 3.Nf3 g61.c4 e5 2.Nc3 d6 3.Nf3 g6
A21 English: Lukin Variation1.c4 e5 2.Nc3 d6 3.Nf3 f5
A21 English: Lukin, 4.d4 e41.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4
A21 English: Lukin, 5.Nd21.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Nd2
A21 English: Lukin, 5.Nd2 Nf6 6.e31.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Nd2 Nf6 6.e3
A21 English: Lukin, 5.Ng51.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5
A21 English: Lukin, 5.Ng5 Nf61.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5 Nf6
A21 English: Lukin, 5.Ng5 Be71.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5 Be7
A21 English: Lukin, 5.Ng5 c61.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5 c6
A21 English: Smyslov Defence1.c4 e5 2.Nc3 d6 3.Nf3 Bg4
A21 English: Kramnik-Shirov Counterattack1.c4 e5 2.Nc3 Bb4
A21 English: Kramnik-Shirov, 3.g31.c4 e5 2.Nc3 Bb4 3.g3
A21 English: Kramnik-Shirov, 3.g3 Bxc31.c4 e5 2.Nc3 Bb4 3.g3 Bxc3
A21 English: Kramnik-Shirov, 3.g3 Bxc3 4.bxc31.c4 e5 2.Nc3 Bb4 3.g3 Bxc3 4.bxc3
A21 English: Kramnik-Shirov, 3.Nd51.c4 e5 2.Nc3 Bb4 3.Nd5
A21 English: Kramnik-Shirov, 3.Nd5 a51.c4 e5 2.Nc3 Bb4 3.Nd5 a5
A21 English: Kramnik-Shirov, 3.Nd5 Ba51.c4 e5 2.Nc3 Bb4 3.Nd5 Ba5
A21 English: Kramnik-Shirov, 3.Nd5 Bc51.c4 e5 2.Nc3 Bb4 3.Nd5 Bc5
A21 English: Kramnik-Shirov, 3.Nd5 Be71.c4 e5 2.Nc3 Bb4 3.Nd5 Be7
A21 English: Kramnik-Shirov, 3.Nd5 Be7 4.d41.c4 e5 2.Nc3 Bb4 3.Nd5 Be7 4.d4
A22 English: King's, 2.Nc3 Nf61.c4 e5 2.Nc3 Nf6
A22 English: Anglo-Indian, 2.Nc3 c6 3.e4 e51.c4 Nf6 2.Nc3 c6 3.e4 e5
A22 English: King's, 2.Nc3 Nf6 3.e41.c4 e5 2.Nc3 Nf6 3.e4
A22 English: King's, 2.Nc3 Nf6 3.e31.c4 e5 2.Nc3 Nf6 3.e3
A22 English: King's, 2.Nc3 Nf6 3.e3 Bb41.c4 e5 2.Nc3 Nf6 3.e3 Bb4
A22 English: King's, 2.Nc3 Nf6 3.Nf31.c4 e5 2.Nc3 Nf6 3.Nf3
A22 English: King's, 2.Nc3 Nf6 3.Nf3 d61.c4 e5 2.Nc3 Nf6 3.Nf3 d6
A22 English: King's, 2.Nc3 Nf6 3.Nf3 e41.c4 e5 2.Nc3 Nf6 3.Nf3 e4
A22 English: Bellon Gambit1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 b5
A22 English: Bremen System1.c4 e5 2.Nc3 Nf6 3.g3
A22 English: Bremen, 3...Bc51.c4 e5 2.Nc3 Nf6 3.g3 Bc5
A22 English: Bremen, Reverse Dragon1.c4 e5 2.Nc3 Nf6 3.g3 d5
A22 English: Bremen, Reverse Dragon, 4.cxd51.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5
A22 English: Bremen, Reverse Dragon, 4.cxd5 Nxd51.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5
A22 English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 5.Bg21.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2
A22 English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 5.Bg2 Nb61.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nb6
A22 English: Bremen, Smyslov System1.c4 e5 2.Nc3 Nf6 3.g3 Bb4
A22 English: Bremen, Smyslov, 4.Bg21.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2
A22 English: Bremen, Smyslov, 4.Bg2 Bxc31.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 Bxc3
A22 English: Bremen, Smyslov, 4.Bg2 O-O1.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 O-O
A22 English: Bremen, Smyslov, 4.Bg2 O-O 5.e41.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 O-O 5.e4
A23 English: Bremen, Keres System1.c4 e5 2.Nc3 Nf6 3.g3 c6
A23 English: Bremen, Keres, 4.Nf31.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3
A23 English: Bremen, Keres, 4.Nf3 d61.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3 d6
A23 English: Bremen, Keres, 4.Nf3 d61.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3 d6 5.Bg2
A23 English: Bremen, Keres, 4.Nf3 e41.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3 e4
A23 English: Bremen, Keres, 4.Bg21.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2
A23 English: Bremen, Keres, 4.Bg2 d51.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5
A23 English: Bremen, Keres, 4.Bg2 d5 5.cxd51.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5 5.cxd5
A23 English: Bremen, Keres, 4.Bg2 d5 5.cxd5 cxd51.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5
A24 English: Bremen, 3...g61.c4 e5 2.Nc3 Nf6 3.g3 g6
A24 English: Bremen, 3...g6 4.Bg21.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2
A24 English: Bremen, 3...g6 4.Bg2 Bg71.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.d31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.d3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e41.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d61.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d6 6.Nf31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nf3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O 7.d31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O 7.d3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O c61.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O c6
A25 English: Closed1.c4 e5 2.Nc3 Nc6
A25 English: Closed, 3.e31.c4 e5 2.Nc3 Nc6 3.e3
A25 English: Closed, 3.e3 Nf61.c4 e5 2.Nc3 Nc6 3.e3 Nf6
A25 English: Closed, 3.g31.c4 e5 2.Nc3 Nc6 3.g3
A25 English: Closed, 3.g3 f51.c4 e5 2.Nc3 Nc6 3.g3 f5
A25 English: Closed, 3.g3 f5 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2
A25 English: Closed, 3.g3 f5 4.Bg2 Nf61.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6
A25 English: Closed, 3.g3 f5 4.Bg2 Nf6 5.e3 g61.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 5.e3 g6
A25 English: Closed, 3.g3 f5 4.Bg2 Nf6 5.d31.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 5.d3
A25 English: Closed, 3.g3 Nf61.c4 e5 2.Nc3 Nc6 3.g3 Nf6
A25 English: Closed, 3.g3 Nf6 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bc51.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bc5
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bc5 5.e31.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bc5 5.e3
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bb41.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bb4
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bb4 5.Nd51.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bb4 5.Nd5
A25 English: Closed, 3.g3 d6 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2
A25 English: Closed, Trצger Defence1.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2 Be6
A25 English: Closed, Trצger Defence, 5.d31.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2 Be6 5.d3
A25 English: Closed, 3.g3 g61.c4 e5 2.Nc3 Nc6 3.g3 g6
A25 English: Closed, 3.g3 g6 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2
A25 English: Closed, 3.g3 g6 4.Bg2 Bg71.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7
A25 English: Closed, 3.g6 g6 4.Bg2 Bg7 5.e31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3
A25 English: Closed, Taimanov Variation1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Nh6
A25 English: Closed, Hort Variation1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6
A25 English: Closed, Hort Variation, 7.d31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6 7.d3
A25 English: Closed, 5.Rb11.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1
A25 English: Closed, 5.Rb1, Taimanov Variation1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 Nh6
A25 English: Closed, 5.Rb1 a51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 a5
A25 English: Closed, 5.e41.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4
A25 English: Closed, 5.d31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3
A25 English: Closed, 5.d3 Nge71.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 Nge7
A26 English: Closed, 5.d3 d61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6
A26 English: Closed, 5.d3 d6 6.e31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e3
A26 English: Closed, 5.d3 d6 6.Rb11.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1
A26 English: Closed, 5.d3 d6 6.Rb1 f51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 f5
A26 English: Closed, 5.d3 d6 6.Rb1 a51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 a5
A26 English: Closed, 5.d3 d6 6.Nf31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3
A26 English: Closed, 5.d3 d6 6.Nf3 Nf61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb11.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3 h61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3 h6
A26 English: Botvinnik System1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4
A26 English: Botvinnik System, 6...Nf61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6
A26 English: Botvinnik System, 6...Nf6 7.Nf31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nf3
A26 English: Botvinnik System, 6...Nf6 7.Nf3 O-O 8.O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nf3 O-O 8.O-O
A26 English: Botvinnik System, 6...Nf6 7.Nge21.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nge2
A26 English: Botvinnik System, 6...Nf6 7.Nge2 O-O 8.O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nge2 O-O 8.O-O
A26 English: Botvinnik System, 6...Nge71.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nge7
A26 English: Botvinnik System, 6...Nge7 7.Nge21.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nge7 7.Nge2
A27 English: Three Knights1.c4 e5 2.Nc3 Nc6 3.Nf3
A27 English: Three Knights, 3...Bb41.c4 e5 2.Nc3 Nc6 3.Nf3 Bb4
A27 English: Three Knights, 3...d61.c4 e5 2.Nc3 Nc6 3.Nf3 d6
A27 English: Three Knights, 3...f51.c4 e5 2.Nc3 Nc6 3.Nf3 f5
A27 English: Three Knights, 3...f5 4.d41.c4 e5 2.Nc3 Nc6 3.Nf3 f5 4.d4
A27 English: Three Knights, 3...f5 4.d4 e41.c4 e5 2.Nc3 Nc6 3.Nf3 f5 4.d4 e4
A27 English: Three Knights, 3...g61.c4 e5 2.Nc3 Nc6 3.Nf3 g6
A27 English: Three Knights, 3...g6 4.d41.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4
A27 English: Three Knights, 3...g6 4.d4 exd41.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4 exd4
A27 English: Three Knights, 3...g6 4.d4 exd4 5.Nxd41.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4 exd4 5.Nxd4
A28 English: Four Knights1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6
A28 English: Four Knights, Nimzowitsch Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e4
A28 English: Four Knights, Marini Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.a3
A28 English: Four Knights, Capablanca Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d3
A28 English: Four Knights, 4.d41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4
A28 English: Four Knights, Nenarokov Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5
A28 English: Four Knights, Bradley Beach Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 e4
A28 English: Four Knights, 4.e31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3
A28 English: Four Knights, 4.e3 Bb41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4
A28 English: Four Knights, 4.e3 Bb4 5.Qc21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2
A28 English: Four Knights, Stean Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 O-O 6.Nd5 Re8 7.Qf5
A28 English: Four Knights, Romanishin Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 Bxc3
A29 English: Four Knights, 4.g31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3
A29 English: Four Knights, 4.g3 g61.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 g6
A29 English: Four Knights, 4.g3 g6 5.d41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 g6 5.d4
A29 English: Four Knights, 4.g3 d51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5
A29 English: Four Knights, 4.g3 d5 5.cxd51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be61.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be6
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb61.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be71.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.Rb11.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.Rb1
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a3
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d3
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d3 O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d3 O-O
A29 English: Four Knights, 4.g3 Bc51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5
A29 English: Four Knights, 4.g3 Bc5 5.Bg21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2
A29 English: Four Knights, 4.g3 Bc5 5.Bg2 d6 6.O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 d6 6.O-O
A29 English: Four Knights, 4.g3 Bc5 5.Bg2 d6 6.O-O O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 d6 6.O-O O-O
A29 English: Four Knights, 4.g3 Bc5 5.Bg2 d6 6.O-O O-O 7.d31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 d6 6.O-O O-O 7.d3
A29 English: Four Knights, 4.g3 Bb41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4
A29 English: Four Knights, 4.g3 Bb4 5.Nd51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Nd5
A29 English: Four Knights, 4.g3 Bb4 5.Bg21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2
A29 English: Four Knights, Main Line 6.O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O
A29 English: Four Knights, Main Line 6.O-O e41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4
A30 English: Symmetrical1.c4 c5
A30 English: Symmetrical, 2.b31.c4 c5 2.b3
A30 English: Symmetrical, 2.g31.c4 c5 2.g3
A30 English: Symmetrical, 2.g3 g61.c4 c5 2.g3 g6
A30 English: Symmetrical, 2.Nf31.c4 c5 2.Nf3
A30 English: Symmetrical, 2.Nf3 b61.c4 c5 2.Nf3 b6
A30 English: Symmetrical, 2.Nf3 b6 3.g31.c4 c5 2.Nf3 b6 3.g3
A30 English: Symmetrical, 2.Nf3 b6 3.g3 Bb7 4.Bg21.c4 c5 2.Nf3 b6 3.g3 Bb7 4.Bg2
A30 English: Symmetrical, 2.Nf3 g61.c4 c5 2.Nf3 g6
A30 English: Symmetrical, 2.Nf3 Nc61.c4 c5 2.Nf3 Nc6
A30 English: Symmetrical, 2.Nf3 Nf61.c4 c5 2.Nf3 Nf6
A30 English: Symmetrical, 2.Nf3 Nf6 3.g31.c4 c5 2.Nf3 Nf6 3.g3
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.Nc3
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O
A30 English: Symmetrical, Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6
A30 English: Symmetrical, Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.Nc3 Bg7
A30 English: Symmetrical, Mutual Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3
A30 English: Symmetrical, Mutual Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O
A30 English: Symmetrical, Mutual Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.Nc3
A30 English: Symmetrical, Mutual Double Fianchetto with ...d51.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.Nc3 d5
A30 English: Symmetrical, Hedgehog System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6
A30 English: Symmetrical, Hedgehog System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3
A30 English: Symmetrical, Hedgehog System, 6...a61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 a6
A30 English: Symmetrical, Hedgehog System, 6...d61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 d6
A30 English: Symmetrical, Hedgehog System, 6...d6 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 d6 7.b3
A30 English: Symmetrical, Hedgehog System, 6...d6 7.d41.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 d6 7.d4
A30 English: Symmetrical, Hedgehog System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7
A30 English: Symmetrical, Hedgehog System, 7.Re11.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.Re1
A30 English: Symmetrical, Hedgehog System, 7.Re1 d51.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.Re1 d5
A30 English: Symmetrical, Hedgehog System, 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3
A30 English: Symmetrical, Hedgehog System, 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3 O-O
A30 English: Symmetrical, Hedgehog System, 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3 O-O 8.Bb2 d6
A30 English: Symmetrical, Hedgehog System, 7.d41.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4
A30 English: Symmetrical, Hedgehog System, 8.Qxd41.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 O-O1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 O-O
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 O-O1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 O-O 9.Rd1 Nc6
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 Nc61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 Nc6
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 d61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6
A30 English: Symmetrical, Hedgehog System, 9.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.b3
A30 English: Symmetrical, Hedgehog System, 9.b3 Nbd71.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.b3 Nbd7
A30 English: Symmetrical, Hedgehog System, 9.b3 Nbd7 10.Nb51.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.b3 Nbd7 10.Nb5
A30 English: Symmetrical, Hedgehog System, 9.Rd11.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1
A30 English: Symmetrical, Hedgehog System, Flexible Formation1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7
A30 English: Symmetrical, Hedgehog System, Flexible Formation1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4
A30 English: Symmetrical, Hedgehog System, Flexible Formation, 11.e4 Qc71.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4 Qc7
A30 English: Symmetrical, Hedgehog System, Flexible Formation, 11.e4 O-O1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4 O-O
A31 English: Symmetrical, Two Knights, 1.c4 c5 2.Nf3 Nf6 3.d41.c4 c5 2.Nf3 Nf6 3.d4
A31 English: Symmetrical, Two Knights, 3...a61.c4 c5 2.Nf3 Nf6 3.d4 a6
A31 English: Symmetrical, Two Knights, 3...g61.c4 c5 2.Nf3 Nf6 3.d4 g6
A31 English: Symmetrical, Two Knights, 3...g6 4.d51.c4 c5 2.Nf3 Nf6 3.d4 g6 4.d5
A31 English: Symmetrical, Two Knights, 3...g6 4.Nc31.c4 c5 2.Nf3 Nf6 3.d4 g6 4.Nc3
A31 English: Symmetrical, Two Knights, 3..cxd41.c4 c5 2.Nf3 Nf6 3.d4 cxd4
A31 English: Symmetrical, Two Knights, 3..cxd4 4.Nxd41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4
A31 English: Symmetrical, Two Knights, 4...b61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 b6
A31 English: Symmetrical, Two Knights, 4...b6 5.Nc3 Bb71.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 b6 5.Nc3 Bb7
A31 English: Symmetrical, Two Knights, 4...g61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6
A31 English: Symmetrical, Two Knights, 4...g6 5.Nc31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6 5.Nc3
A31 English: Symmetrical, Two Knights, 4...g6 5.Nc3 Bg71.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7
A31 English: Symmetrical, Two Knights, 4...g61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.e4
A31 English: Symmetrical, Two Knights, 4...Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 Nc6
A31 English: Symmetrical, Two Knights, 4...Nc6 5.Nc31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3
A31 English: Symmetrical, Two Knights, 4...Nc6 5.Nc3 g61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 g6
A31 English: Symmetrical, Two Knights, 4...e51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e5
A31 English: Symmetrical, Two Knights, 4...e5 5.Nb51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e5 5.Nb5
A32 English: Symmetrical, Two Knights, 4...e61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6
A32 English: Symmetrical, Two Knights, 5.e31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.e3
A32 English: Symmetrical, Two Knights, 5.g31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3
A32 English: Symmetrical, Two Knights, 5.g3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 a6
A32 English: Symmetrical, Two Knights, 5.g3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 a6 6.Bg2
A32 English: Symmetrical, Two Knights, 5.g3 Qb61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Qb6
A32 English: Symmetrical, Two Knights, 5.g3 Qb6 6.Bg21.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Qb6 6.Bg2
A32 English: Symmetrical, Two Knights, 5.g3 Qc71.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Qc7
A32 English: Symmetrical, Two Knights, 5.g3 Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Nc6
A32 English: Symmetrical, Two Knights, 5.g3 Nc6 6.Bg21.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Nc6 6.Bg2
A32 English: Symmetrical, Two Knights, 5.g3 Bb4+1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Bb4+
A32 English: Symmetrical, Two Knights, 5.g3 d51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 d5
A32 English: Symmetrical, Two Knights, 5.Nc31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3
A32 English: Symmetrical, Two Knights, 5.Nc3 d51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 d5
A32 English: Symmetrical, Two Knights, 5.Nc3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 a6
A32 English: Symmetrical, Two Knights, 5.Nc3 a6 6.g31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 a6 6.g3
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Qb31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Qb3
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Nb51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Nb5
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Bd21.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Bd2
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Bd2 Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Bd2 Nc6
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Bf41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Bf4
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Bg51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Bg5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.e31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.e3
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.a3
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a3 Bc51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.a3 Bc5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 Bb41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5 Bb4
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 d51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5 d5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 d5 Queenswap1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5 d5 7.Bf4 e5 8.cxd5 exf4 9.dxc6 bxc6 10.Qxd8+ Kxd8
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 a6
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 Bb41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Bb4
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 Bc51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Bc5
A33 English: Symmetrical, Geller Variation1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6
A33 English: Symmetrical, Geller, 7.Nb31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6 7.Nb3
A33 English: Symmetrical, Geller, 7.Nb3 Ne51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6 7.Nb3 Ne5
A34 English: Symmetrical1.c4 c5 2.Nc3
A34 English: Symmetrical, 2...b61.c4 c5 2.Nc3 b6
A34 English: Symmetrical, 2...b6 3.Nf31.c4 c5 2.Nc3 b6 3.Nf3
A34 English: Symmetrical, 2...b6 3.Nf3 Bb71.c4 c5 2.Nc3 b6 3.Nf3 Bb7
A34 English: Symmetrical, 2...g61.c4 c5 2.Nc3 g6
A34 English: Symmetrical, 2...g6 3.Nf31.c4 c5 2.Nc3 g6 3.Nf3
A34 English: Symmetrical, 2...g6 3.g31.c4 c5 2.Nc3 g6 3.g3
A34 English: Symmetrical, 2...g6 3.g3 Bg7 4.Bg21.c4 c5 2.Nc3 g6 3.g3 Bg7 4.Bg2
A34 English: Symmetrical, 2...Nf61.c4 c5 2.Nc3 Nf6
A34 English: Symmetrical, 2...Nf6 3.g31.c4 c5 2.Nc3 Nf6 3.g3
A34 English: Symmetrical, 2...Nf6 3.g3 d51.c4 c5 2.Nc3 Nf6 3.g3 d5
A34 English: Symmetrical, 2...Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg21.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2
A34 English: Symmetrical, Rubinstein System1.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7
A34 English: Symmetrical, 3 Knight's1.c4 c5 2.Nc3 Nf6 3.Nf3
A34 English: Symmetrical, 3 Knight's, 3...b61.c4 c5 2.Nc3 Nf6 3.Nf3 b6
A34 English: Symmetrical, 3 Knight's, 3...e61.c4 c5 2.Nc3 Nf6 3.Nf3 e6
A34 English: Symmetrical, 3 Knight's, 3...e6 4.g31.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.g3
A34 English: Symmetrical, 3 Knight's, 3...g61.c4 c5 2.Nc3 Nf6 3.Nf3 g6
A34 English: Symmetrical, 3 Knight's1.c4 c5 2.Nc3 Nf6 3.Nf3 d5
A34 English: Symmetrical, 3 Knight's, Exchange1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5
A34 English: Symmetrical, 3 Knight's, 5.g31.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.g3
A34 English: Symmetrical, 3 Knight's, 5.e41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4
A34 English: Symmetrical, 3 Knight's, 5.e4 Nxc31.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nxc3
A34 English: Symmetrical, 3 Knight's, Queen Swap1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.dxc3 Qxd1+ 7.Kxd1
A34 English: Symmetrical, 3 Knight's, 5.e4 Nb41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4
A34 English: Symmetrical, 3 Knight's, 5.e4 Nb4 6.Bb5+1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4 6.Bb5+
A34 English: Symmetrical, 3 Knight's, 5.e4 Nb4 6.Bc41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4 6.Bc4
A34 English: Symmetrical, 3 Knight's, 5.d41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.d4
A34 English: Symmetrical, 3 Knight's, 5.d4 cxd41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.d4 cxd4
A34 English: Symmetrical, 3 Knight's, 5.d4 Nxc31.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.d4 Nxc3
A35 English: Symmetrical1.c4 c5 2.Nc3 Nc6
A35 English: Symmetrical, 2.Nc3 Nc6 3.e31.c4 c5 2.Nc3 Nc6 3.e3
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf31.c4 c5 2.Nc3 Nc6 3.Nf3
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf3 g61.c4 c5 2.Nc3 Nc6 3.Nf3 g6
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf3 g6 4.e31.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf3 g6 4.e3 Bg71.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3 Bg7
A35 English: Symmetrical, Four Knights1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6
A35 English: Symmetrical, Four Knights, 4.d41.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4
A35 English: Symmetrical, Four Knights, 4.e31.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3
A35 English: Symmetrical, Four Knights, 4.e3 e51.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 e5
A35 English: Symmetrical, Four Knights, 4.g31.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3
A35 English: Symmetrical, Four Knights, 4.g3 d51.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5
A35 English: Symmetrical, Four Knights, 4.g3 d5 5.cxd51.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5
A36 English: Symmetrical, 3.g31.c4 c5 2.Nc3 Nc6 3.g3
A36 English: Symmetrical, 3.g3 Nf61.c4 c5 2.Nc3 Nc6 3.g3 Nf6
A36 English: Symmetrical, 3.g3 e61.c4 c5 2.Nc3 Nc6 3.g3 e6
A36 English: Symmetrical, 3.g3 e6 4.Nf31.c4 c5 2.Nc3 Nc6 3.g3 e6 4.Nf3
A36 English: Symmetrical, Keres-Parma System1.c4 c5 2.Nc3 Nc6 3.g3 e6 4.Nf3 Nf6
A36 English: Symmetrical, Keres-Parma, Main Line Exchange1.c4 c5 2.Nc3 Nc6 3.g3 e6 4.Nf3 Nf6 5.Bg2 Be7 6.O-O d5 7.cxd5 Nxd5
A36 English: Symmetrical, 3.g3 g61.c4 c5 2.Nc3 Nc6 3.g3 g6
A36 English: Symmetrical, 3.g3 g6 4.Bg21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2
A36 English: Symmetrical, 3.g3 g6 4.Bg2 Bg71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7
A36 English: Symmetrical, 5.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3
A36 English: Symmetrical, 5.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3
A36 English: Symmetrical, 5.a3 e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3 e6
A36 English: Symmetrical, 5.a3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3 d6
A36 English: Symmetrical, 5.b31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.b3
A36 English: Symmetrical, 5.e31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3
A36 English: Symmetrical, 5.e3 e5 (Botvinnik Reversed)1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e5
A36 English: Symmetrical, 5.e3 e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e6
A36 English: Symmetrical, 5.e3 e6 6.Nge21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e6 6.Nge2
A36 English: Symmetrical, 5.e3 e6 6.Nge2 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e6 6.Nge2 Nge7
A36 English: Symmetrical, Botvinnik System1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4
A36 English: Symmetrical, Botvinnik System, 5...Nf61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 Nf6
A36 English: Symmetrical, Botvinnik System, 5...Nf6 6.Nge21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 Nf6 6.Nge2
A36 English: Symmetrical, Botvinnik System, 5...e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6
A36 English: Symmetrical, Botvinnik System, 5...e6 6.Nge2 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7
A36 English: Symmetrical, Botvinnik System, 5...e6, 8.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7 7.O-O O-O 8.d3
A36 English: Symmetrical, Botvinnik System, 5...e6, 8.d3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7 7.O-O O-O 8.d3 d6
A36 English: Symmetrical, Botvinnik System, 5...d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6
A36 English: Symmetrical, Botvinnik System, 5...d6 6.Nge21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2
A36 English: Symmetrical, Botvinnik System, 5...d6 6.Nge2 Nf61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6
A36 English: Symmetrical, Botvinnik System, 5...d6, 7.O-O O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d3 Rb81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 Rb8
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d3 Ne81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 Ne8
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 a6
A37 English: Symmetrical, 5.Nf31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3
A37 English: Symmetrical, 5.Nf3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 a6
A37 English: Symmetrical, 5.Nf3 Nh61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nh6
A37 English: Symmetrical, 5.Nf3 Nh6 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nh6 6.O-O
A37 English: Symmetrical, 5.Nf3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6
A37 English: Symmetrical, 5.Nf3 d6 6.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3
A37 English: Symmetrical, 5.Nf3 d6 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O
A37 English: Symmetrical, 5.Nf3 d6 6.O-O Nh61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O Nh6
A37 English: Symmetrical, 5.Nf3 e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6
A37 English: Symmetrical, 5.Nf3 e6 6.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.d3
A37 English: Symmetrical, 5.Nf3 e6 6.e31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.e3
A37 English: Symmetrical, 5.Nf3 e6 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.e31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.e3
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d3 O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3 O-O
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd2
A37 English: Symmetrical, 5.Nf3 e51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5
A37 English: Symmetrical, 5.Nf3 e5 6.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.a3
A37 English: Symmetrical, 5.Nf3 e5 6.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.d3
A37 English: Symmetrical, 5.Nf3 e5 6.d3 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.d3 Nge7
A37 English: Symmetrical, 5.Nf3 e5 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d6 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6 7.d3
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d6 7.d3 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6 7.d3 Nge7
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d6 7.d3 Nge7 8.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6 7.d3 Nge7 8.a3
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d3 O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3 O-O
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d3 O-O 8.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3 O-O 8.a3
A38 English: Symmetrical, Main Line1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6
A38 English: Symmetrical, Main Line, 6.d41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.d4
A38 English: Symmetrical, Main Line, 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O
A38 English: Symmetrical, Main Line, 6.O-O d51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O d5
A38 English: Symmetrical, Main Line, 6.O-O d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O d6
A38 English: Symmetrical, Main Line, 6.O-O O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O
A38 English: Symmetrical, Main Line, 7.Rb11.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.Rb1
A38 English: Symmetrical, Main Line, 7.b31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.b3
A38 English: Symmetrical, Main Line, 7.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.a3
A38 English: Symmetrical, Main Line, 7.a3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.a3 d6
A38 English: Symmetrical, Main Line, 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3
A38 English: Symmetrical, Main Line, 7.d3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 a6
A38 English: Symmetrical, Main Line, 7.d3 d51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d5
A38 English: Symmetrical, Main Line, 7.d3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6
A38 English: Symmetrical, Main Line, 7.d3 d6 8.Rb11.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Rb1
A38 English: Symmetrical, Main Line, 7.d3 d6 8.Bd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Bd2
A38 English: Symmetrical, Main Line, 7.d3 d6 8.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.a3
A38 English: Symmetrical, Main Line, 7.d3 d6 8.a3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.a3 a6
A39 English: Symmetrical, Main Line 7.d41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4
A39 English: Symmetrical, Main Line 7.d4 cxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4
A39 English: Symmetrical, Main Line 7.d4 cxd4 8.Nxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4
A39 English: Symmetrical, Main Line 7.d4, 8...Qa51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qa5
A39 English: Symmetrical, Main Line 7.d4, 8...Qb61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qb6
A39 English: Symmetrical, Main Line 7.d4, 8...Qb61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qb6 9.Nc2
A39 English: Symmetrical, Main Line 7.d4, 8...a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 a6
A39 English: Symmetrical, Main Line 7.d4, 8...d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 d6
A39 English: Symmetrical, Main Line 7.d4, 8...Ng41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Ng4
A39 English: Symmetrical, Main Line 7.d4, 8...Ng4 9.e3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Ng4 9.e3 d6
A39 English: Symmetrical, Main Line 7.d4, 8...Nxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4
A39 English: Symmetrical, Main Line 7.d4, 9.Qxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4
A39 English: Symmetrical, Main Line 7.d4, 9...d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6
A39 English: Symmetrical, Main Line 7.d4, 10.Qd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd2
A39 English: Symmetrical, Main Line 7.d4, 10.Qd31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 Bf51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 Bf5
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 Rb81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 Rb8
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a6 11.Bd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a6 11.Bd2 Rb81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2 Rb8
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a6 11.Bd2 Rb8 12.Rac11.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2 Rb8 12.Rac1

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[1] ‏

A10 English1.c4
A10 English: 1...g51.c4 g5
A10 English: 1...g5 2.d41.c4 g5 2.d4
A10 English: Myers Gambit1.c4 g5 2.d4 Bg7
A10 English: 1...Nc61.c4 Nc6
A10 English: 1...Nc6 2.Nc31.c4 Nc6 2.Nc3
A10 English: Jהnisch Gambit1.c4 b5
A10 English: Vector1.c4 d5
A10 English: 1...b61.c4 b6
A10 English: 1...b6 2.Nf31.c4 b6 2.Nf3
A10 English: 1...b6 2.Nf3 Bb71.c4 b6 2.Nf3 Bb7
A10 English: 1...b6 2.Nc31.c4 b6 2.Nc3
A10 English: 1...b6 2.Nc3 e61.c4 b6 2.Nc3 e6
A10 English: 1...b6 2.Nc3 e6 3.e41.c4 b6 2.Nc3 e6 3.e4
A10 English: 1...b6 2.Nc3 Bb71.c4 b6 2.Nc3 Bb7
A10 English: 1...b6 2.Nc3 Bb7 3.e41.c4 b6 2.Nc3 Bb7 3.e4
A10 English: 1...b6 2.Nc3 Bb7 3.e4 e61.c4 b6 2.Nc3 Bb7 3.e4 e6
A10 English: 1...d61.c4 d6
A10 English: 1...d6 2.Nc31.c4 d6 2.Nc3
A10 English: 1...d6 2.Nf31.c4 d6 2.Nf3
A10 English: 1...g61.c4 g6
A10 English: 1...g6 2.g31.c4 g6 2.g3
A10 English: 1...g6 2.Nc31.c4 g6 2.Nc3
A10 English: 1...g6 2.Nc3 Bg71.c4 g6 2.Nc3 Bg7
A10 English: 1...g6 2.Nc3 Bg7 3.g31.c4 g6 2.Nc3 Bg7 3.g3
A10 English: 1...g6 2.Nf31.c4 g6 2.Nf3
A10 English: 1...g6 2.Nf3 Bg71.c4 g6 2.Nf3 Bg7
A10 English: 1...g6 2.e41.c4 g6 2.e4
A10 English: Adorjan Defence1.c4 g6 2.e4 e5
A10 English: Anglo-Dutch1.c4 f5
A10 English: Wade Gambit1.c4 f5 2.g4
A10 English: Anglo-Dutch, 2.g31.c4 f5 2.g3
A10 English: Anglo-Dutch, 2.g3 Nf61.c4 f5 2.g3 Nf6
A10 English: Anglo-Dutch, 2.g3 Nf6 3.Bg21.c4 f5 2.g3 Nf6 3.Bg2
A10 English: Anglo-Dutch, 2.Nc31.c4 f5 2.Nc3
A10 English: Anglo-Dutch, 2.Nc3 Nf61.c4 f5 2.Nc3 Nf6
A10 English: Anglo-Dutch, 2.Nc3 Nf6 3.g31.c4 f5 2.Nc3 Nf6 3.g3
A10 English: Anglo-Dutch, 2.Nc3 Nf6 3.g3 g61.c4 f5 2.Nc3 Nf6 3.g3 g6
A10 English: Anglo-Dutch, 2.Nf31.c4 f5 2.Nf3
A10 English: Anglo-Dutch, 2.Nf3 e61.c4 f5 2.Nf3 e6
A10 English: Anglo-Dutch, 2.Nf3 Nf61.c4 f5 2.Nf3 Nf6
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.Nc31.c4 f5 2.Nf3 Nf6 3.Nc3
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g31.c4 f5 2.Nf3 Nf6 3.g3
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e61.c4 f5 2.Nf3 Nf6 3.g3 e6
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg21.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 c6 5.O-O d51.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 c6 5.O-O d5
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be71.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O1.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O1.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O
A10 English: Anglo-Dutch, 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.Nc31.c4 f5 2.Nf3 Nf6 3.g3 e6 4.Bg2 Be7 5.O-O O-O 6.Nc3
A11 English: Caro-Kann Defence1.c4 c6
A11 English: Caro-Kann Defence, 2.g31.c4 c6 2.g3
A11 English: Caro-Kann Defence, 2.g3 Nf61.c4 c6 2.g3 Nf6
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d51.c4 c6 2.g3 Nf6 3.Bg2 d5
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf31.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf51.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O1.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O e6 6.d31.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bf5 5.O-O e6 6.d3
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg41.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg4
A11 English: Caro-Kann Defence, 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg4 5.O-O1.c4 c6 2.g3 Nf6 3.Bg2 d5 4.Nf3 Bg4 5.O-O
A11 English: Caro-Kann Defence, 2.Nc31.c4 c6 2.Nc3
A11 English: Caro-Kann Defence, 2.Nc3 d51.c4 c6 2.Nc3 d5
A11 English: Caro-Kann Defence, 2.Nf31.c4 c6 2.Nf3
A11 English: Caro-Kann Defence, 2.Nf3 Nf61.c4 c6 2.Nf3 Nf6
A11 English: Caro-Kann Defence, 2.Nf3 d51.c4 c6 2.Nf3 d5
A11 English: Caro-Kann Defence, 3.g31.c4 c6 2.Nf3 d5 3.g3
A11 English: Caro-Kann Defence, 3.g3 Bg41.c4 c6 2.Nf3 d5 3.g3 Bg4
A11 English: Caro-Kann Defence, 3.g3 Bg4 4.Bg21.c4 c6 2.Nf3 d5 3.g3 Bg4 4.Bg2
A11 English: Caro-Kann Defence, 3.e31.c4 c6 2.Nf3 d5 3.e3
A11 English: Caro-Kann Defence, 3.e3 Nf61.c4 c6 2.Nf3 d5 3.e3 Nf6
A11 English: Caro-Kann Defence, 3.e3 Nf6 4.Nc31.c4 c6 2.Nf3 d5 3.e3 Nf6 4.Nc3
A12 English: Caro-Kann Defence, 3.b31.c4 c6 2.Nf3 d5 3.b3
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg41.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg4 5.Bg21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg4 5.Bg2 e61.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6
A12 English: Torre Defence, 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6 6.Bb21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bg4 5.Bg2 e6 6.Bb2
A12 English: London Defence, 4...Bf51.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5
A12 English: London Defence, 4...Bf5 5.Bg21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 5.Bg2
A12 English: London Defence, 4...Bf5 5.Bg2 e61.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 5.Bg2 e6
A12 English: London Defence, 4...Bf5 5.Bg2 e6 6.Bb21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.g3 Bf5 5.Bg2 e6 6.Bb2
A12 English: Caro-Kann Defence, 3.b3 Nf6 4.Bb21.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2
A12 English: Bled Variation, 4...g61.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 g6
A12 English: Bled Variation, 4...g6 5.e3 Bg71.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 g6 5.e3 Bg7
A12 English: New York-London Defence1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 Bf5
A12 English: Capablanca Variation1.c4 c6 2.Nf3 d5 3.b3 Nf6 4.Bb2 Bg4
A12 English: Bogoljubow Variation1.c4 c6 2.Nf3 d5 3.b3 Bg4
A13 English: 1...e61.c4 e6
A13 English: 1...e6 2.g31.c4 e6 2.g3
A13 English: 1...e6 2.g3 d51.c4 e6 2.g3 d5
A13 English: 1...e6 2.g3 d51.c4 e6 2.g3 d5 3.Bg2
A13 English: 1...e6 2.Nc31.c4 e6 2.Nc3
A13 English: 1...e6 2.Nc3 Bb41.c4 e6 2.Nc3 Bb4
A13 English: 1...e6 2.Nc3 d51.c4 e6 2.Nc3 d5
A13 English: 1...e6 2.Nf31.c4 e6 2.Nf3
A13 English: 1...e6 2.Nf3 Nf61.c4 e6 2.Nf3 Nf6
A13 English: 1...e6 2.Nf3 Nf6 3.g31.c4 e6 2.Nf3 Nf6 3.g3
A13 English: Romanishin Gambit1.c4 e6 2.Nf3 Nf6 3.g3 a6 4.Bg2 b5
A13 English: 1...e6 2.Nf3 d51.c4 e6 2.Nf3 d5
A13 English: Agincourt Variation, 3.b31.c4 e6 2.Nf3 d5 3.b3
A13 English: Wimpey System, 3.b3 Nf6 4.Bb2 c5 5.e31.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3
A13 English: Wimpey System, 3.b3 Nf6 4.Bb2 c5 5.e3 Nc61.c4 e6 2.Nf3 d5 3.b3 Nf6 4.Bb2 c5 5.e3 Nc6
A13 English: Agincourt Variation, 3.g31.c4 e6 2.Nf3 d5 3.g3
A13 English: Kurajica Defence1.c4 e6 2.Nf3 d5 3.g3 c6
A13 English: Kurajica Defence, 4.Qc21.c4 e6 2.Nf3 d5 3.g3 c6 4.Qc2
A13 English: Neo-Catalan1.c4 e6 2.Nf3 d5 3.g3 Nf6
A13 English: Neo-Catalan, 4.Bg21.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2
A13 English: Neo-Catalan, 4...c61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c6
A13 English: Neo-Catalan, 4...c6 5.b31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c6 5.b3
A13 English: Neo-Catalan, 4...c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c5
A13 English: Neo-Catalan, 4...c5 5.O-O1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 c5 5.O-O
A13 English: Neo-Catalan Accepted1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4
A13 English: Neo-Catalan Accepted, 5.Qa4+1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd71.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.O-O1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.O-O
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc41.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc4 a61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 a6
A13 English: Neo-Catalan Accepted, 5.Qa4+ Nbd7 6.Qxc4 c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 dxc4 5.Qa4+ Nbd7 6.Qxc4 c5
A14 English: Neo-Catalan Declined1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7
A14 English: Neo-Catalan Declined1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O
A14 English: Neo-Catalan Declined, 5...c61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c6
A14 English: Neo-Catalan Declined, 5...c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O c5
A14 English: Neo-Catalan Declined, 5...O-O1.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O
A14 English: Neo-Catalan Declined, 5...O-O 6.b31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 b61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 b6
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 b6 7.Bb2 Bb71.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 b6 7.Bb2 Bb7 8.e31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 b6 7.Bb2 Bb7 8.e3
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c51.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c5 7.Bb21.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c5 7.Bb2 Nc61.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6
A14 English: Neo-Catalan Declined, 5...O-O 6.b3 c5 7.Bb2 Nc6 8.e31.c4 e6 2.Nf3 d5 3.g3 Nf6 4.Bg2 Be7 5.O-O O-O 6.b3 c5 7.Bb2 Nc6 8.e3
A15 English: Anglo-Indian1.c4 Nf6
A15 English: Anglo-Indian, Polish1.c4 Nf6 2.b4
A15 English: Anglo-Indian, 2.g31.c4 Nf6 2.g3
A15 English: Anglo-Indian, 2.g3 e61.c4 Nf6 2.g3 e6
A15 English: Anglo-Indian, 2.g3 e6 3.Bg21.c4 Nf6 2.g3 e6 3.Bg2
A15 English: Anglo-Indian, 2.g3 g61.c4 Nf6 2.g3 g6
A15 English: Anglo-Indian, 2.g3 g6 3.Bg2 Bg71.c4 Nf6 2.g3 g6 3.Bg2 Bg7
A15 English: Anglo-Indian, 2.Nf31.c4 Nf6 2.Nf3
A15 English: Anglo-Indian, 2.Nf3 g61.c4 Nf6 2.Nf3 g6
A15 English: Anglo-Indian, 2.Nf3 g6 3.g3 Bg7 4.Bg21.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2
A15 English: Anglo-Indian, 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O1.c4 Nf6 2.Nf3 g6 3.g3 Bg7 4.Bg2 O-O
A16 English: Anglo-Indian, 2.Nc31.c4 Nf6 2.Nc3
A16 English: Anglo-Indian, 2.Nc3 Nc61.c4 Nf6 2.Nc3 Nc6
A16 English: Anglo-Indian, 2.Nc3 c61.c4 Nf6 2.Nc3 c6
A16 English: Anglo-Indian, 2.Nc3 c6 3.e41.c4 Nf6 2.Nc3 c6 3.e4
A16 English: Anglo-Indian, 2.Nc3 c6 3.e4 d51.c4 Nf6 2.Nc3 c6 3.e4 d5
A16 English: Anglo-Indian, 2.Nc3 d61.c4 Nf6 2.Nc3 d6
A16 English: Anglo-Indian, 2.Nc3 g61.c4 Nf6 2.Nc3 g6
A16 English: Anglo-Indian, 2.Nc3 g6 3.e41.c4 Nf6 2.Nc3 g6 3.e4
A16 English: Anglo-Indian, 2.Nc3 g6 3.g31.c4 Nf6 2.Nc3 g6 3.g3
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg71.c4 Nf6 2.Nc3 g6 3.g3 Bg7
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg21.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.e41.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.e4
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf31.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3
A16 English: Anglo-Indian, 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O1.c4 Nf6 2.Nc3 g6 3.g3 Bg7 4.Bg2 O-O 5.Nf3 d6 6.O-O
A16 English: Anglo-Grnfeld1.c4 Nf6 2.Nc3 d5
A16 English: Anglo-Grnfeld, 3.Nf31.c4 Nf6 2.Nc3 d5 3.Nf3
A16 English: Anglo-Grnfeld, 3.Nf3 g61.c4 Nf6 2.Nc3 d5 3.Nf3 g6
A16 English: Anglo-Grnfeld, 3.Nf3 g6 4.Qa4+1.c4 Nf6 2.Nc3 d5 3.Nf3 g6 4.Qa4+
A16 English: Anglo-Grnfeld, 3.Nf3 g6 4.g31.c4 Nf6 2.Nc3 d5 3.Nf3 g6 4.g3
A16 English: Anglo-Grnfeld, 3.cxd51.c4 Nf6 2.Nc3 d5 3.cxd5
A16 English: Anglo-Grnfeld, Smyslov Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3
A16 English: Anglo-Grnfeld, Smyslov Variation, 6.bxc31.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3
A16 English: Anglo-Grnfeld, Smyslov Variation, 6.bxc3 Bg71.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3 Bg7
A16 English: Anglo-Grnfeld, Smyslov, 7.Rb11.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nxc3 6.bxc3 Bg7 7.Rb1
A16 English: Anglo-Grnfeld, Czech Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.g3 g6 5.Bg2 Nb6
A16 English: Anglo-Grnfeld, 4.Nf31.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3
A16 English: Anglo-Grnfeld, 4.Nf3 g61.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6
A16 English: Anglo-Grnfeld, 4.Nf3 g6 5.g31.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3
A16 English: Anglo-Grnfeld, 4.Nf3 g6 5.g3 Bg71.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7
A16 English: Anglo-Grnfeld, Korchnoi Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.g3 Bg7 6.Bg2 e5
A16 English: Anglo-Grnfeld, Andersson-Bצצk Variation1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.e4
A16 English: Anglo-Grnfeld, Andersson-Bצצk, Queenswap1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.e4 Nxc3 6.dxc3 Qxd1+ 7.Kxd1
A16 English: Anglo-Grnfeld, 4.Nf3 g6 5.Qa4+1.c4 Nf6 2.Nc3 d5 3.cxd5 Nxd5 4.Nf3 g6 5.Qa4+
A17 English: Anglo-Indian, 2.Nc3 e61.c4 Nf6 2.Nc3 e6
A17 English: Anglo-Indian, 2.Nc3 e6 3.g31.c4 Nf6 2.Nc3 e6 3.g3
A17 English: Anglo-Indian, 2.Nc3 e6 3.Nf31.c4 Nf6 2.Nc3 e6 3.Nf3
A17 English: Anglo-Indian, 2.Nc3 e6 3.Nf3 d51.c4 Nf6 2.Nc3 e6 3.Nf3 d5
A17 English: Anglo-Queen's Indian1.c4 Nf6 2.Nc3 e6 3.Nf3 b6
A17 English: Anglo-Queen's Indian, 4.e41.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4
A17 English: Anglo-Queen's Indian, Romanishin1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.e4 Bb7 5.Bd3
A17 English: Anglo-Queen's Indian, 4.g31.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3
A17 English: Anglo-Queen's Indian, 4.g3 Bb7 5.Bg21.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2
A17 English: Anglo-Queen's Indian, 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O1.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O
A17 English: Anglo-Queen's Indian, 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re11.c4 Nf6 2.Nc3 e6 3.Nf3 b6 4.g3 Bb7 5.Bg2 Be7 6.O-O O-O 7.Re1
A17 English: Nimzo-English1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4
A17 English: Nimzo-English, 4.g31.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.g3
A17 English: Nimzo-English, 4.Qc21.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.Qc2
A17 English: Nimzo-English, 4.Qc2 O-O1.c4 Nf6 2.Nc3 e6 3.Nf3 Bb4 4.Qc2 O-O
A18 English: Mikenas1.c4 Nf6 2.Nc3 e6 3.e4
A18 English: Mikenas, Kevitz Defence1.c4 Nf6 2.Nc3 e6 3.e4 Nc6
A18 English: Mikenas, 3...d61.c4 Nf6 2.Nc3 e6 3.e4 d6
A18 English: Mikenas, 3...d6 4.d4 Be71.c4 Nf6 2.Nc3 e6 3.e4 d6 4.d4 Be7
A18 English: Mikenas, French Variation1.c4 Nf6 2.Nc3 e6 3.e4 d5
A18 English: Mikenas, French, 4.cxd51.c4 Nf6 2.Nc3 e6 3.e4 d5 4.cxd5
A18 English: Mikenas, Flohr Variation1.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5
A18 English: Mikenas, Flohr, 4...Ne41.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 Ne4
A18 English: Mikenas, Flohr, 4...d41.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4
A18 English: Mikenas, Flohr, 7.Nf31.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.Nf3
A18 English: Mikenas, Flohr, 7.d41.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4
A18 English: Mikenas, Flohr, 7.d4 c51.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 c5
A18 English: Mikenas, Flohr, 7.d4 e51.c4 Nf6 2.Nc3 e6 3.e4 d5 4.e5 d4 5.exf6 dxc3 6.bxc3 Qxf6 7.d4 e5
A19 English: Mikenas, Sicilian Variation1.c4 Nf6 2.Nc3 e6 3.e4 c5
A19 English: Mikenas, Sicilian, 4.e51.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5
A19 English: Mikenas, Sicilian, 4.e5 Ng81.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8
A19 English: Mikenas, Nei Gambit1.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.d4
A19 English: Mikenas, 5.Nf31.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3
A19 English: Mikenas, 5.Nf3 Nc61.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6
A19 English: Mikenas, 5.Nf3 Nc6 6.d41.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6 6.d4
A19 English: Mikenas, 6.d4 cxd4 7.Nxd4 Nxe51.c4 Nf6 2.Nc3 e6 3.e4 c5 4.e5 Ng8 5.Nf3 Nc6 6.d4 cxd4 7.Nxd4 Nxe5
A20 English: KID, 1...e51.c4 e5
A20 English: KID, 2.d31.c4 e5 2.d3
A20 English: KID, 2.e31.c4 e5 2.e3
A20 English: KID, 2.g31.c4 e5 2.g3
A20 English: KID, 2.g3 f51.c4 e5 2.g3 f5
A20 English: KID, 2.g3 g61.c4 e5 2.g3 g6
A20 English: KID, 2.g3 g6 3.Bg21.c4 e5 2.g3 g6 3.Bg2
A20 English: KID, 2.g3 g6 3.Bg2 Bg71.c4 e5 2.g3 g6 3.Bg2 Bg7
A20 English: KID, 2.g3 c61.c4 e5 2.g3 c6
A20 English: KID, 2.g3 c6 3.d41.c4 e5 2.g3 c6 3.d4
A20 English: KID, 2.g3 d61.c4 e5 2.g3 d6
A20 English: KID, 2.g3 d6 3.Bg21.c4 e5 2.g3 d6 3.Bg2
A20 English: KID, 2.g3 Nc61.c4 e5 2.g3 Nc6
A20 English: KID, 2.g3 Nc6 3.Bg21.c4 e5 2.g3 Nc6 3.Bg2
A20 English: KID, 2.g3 Nf61.c4 e5 2.g3 Nf6
A20 English: KID, 2.g3 Nf6 3.Bg21.c4 e5 2.g3 Nf6 3.Bg2
A20 English: KID, 2.g3 Nf6 3.Bg2 Bc51.c4 e5 2.g3 Nf6 3.Bg2 Bc5
A20 English: KID, 2.g3 Nf6 3.Bg2 Nc61.c4 e5 2.g3 Nf6 3.Bg2 Nc6
A20 English: KID, 2.g3 Nf6 3.Bg2 c61.c4 e5 2.g3 Nf6 3.Bg2 c6
A20 English: KID, 2.g3 Nf6 3.Bg2 d51.c4 e5 2.g3 Nf6 3.Bg2 d5
A20 English: KID, Nimzowitsch1.c4 e5 2.Nf3
A20 English: KID, Nimzowitsch, 2...Nc61.c4 e5 2.Nf3 Nc6
A20 English: KID, Nimzowitsch, Flohr Variation1.c4 e5 2.Nf3 e4
A21 English: KID, 2.Nc31.c4 e5 2.Nc3
A21 English: KID, 2.Nc3 f51.c4 e5 2.Nc3 f5
A21 English: KID, 2.Nc3 f5 3.g3 Nf61.c4 e5 2.Nc3 f5 3.g3 Nf6
A21 English: KID, 2.Nc3 f5 3.g3 Nf6 4.Bg21.c4 e5 2.Nc3 f5 3.g3 Nf6 4.Bg2
A21 English: KID, 2.Nc3 g61.c4 e5 2.Nc3 g6
A21 English: KID, 2.Nc3 g6 3.g3 Bg7 4.Bg21.c4 e5 2.Nc3 g6 3.g3 Bg7 4.Bg2
A21 English: KID, 2.Nc3 d61.c4 e5 2.Nc3 d6
A21 English: KID, Keres Variation1.c4 e5 2.Nc3 d6 3.g3 c6
A21 English: KID, Keres Variation, 4.Bg21.c4 e5 2.Nc3 d6 3.g3 c6 4.Bg2
A21 English: KID, 2.Nc3 d6 3.d41.c4 e5 2.Nc3 d6 3.d4
A21 English: KID, 2.Nc3 d6 3.g31.c4 e5 2.Nc3 d6 3.g3
A21 English: KID, 2.Nc3 d6 3.Nf31.c4 e5 2.Nc3 d6 3.Nf3
A21 English: KID, 2.Nc3 d6 3.Nf3 g61.c4 e5 2.Nc3 d6 3.Nf3 g6
A21 English: Lukin Variation1.c4 e5 2.Nc3 d6 3.Nf3 f5
A21 English: Lukin, 4.d4 e41.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4
A21 English: Lukin, 5.Nd21.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Nd2
A21 English: Lukin, 5.Nd2 Nf6 6.e31.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Nd2 Nf6 6.e3
A21 English: Lukin, 5.Ng51.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5
A21 English: Lukin, 5.Ng5 Nf61.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5 Nf6
A21 English: Lukin, 5.Ng5 Be71.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5 Be7
A21 English: Lukin, 5.Ng5 c61.c4 e5 2.Nc3 d6 3.Nf3 f5 4.d4 e4 5.Ng5 c6
A21 English: Smyslov Defence1.c4 e5 2.Nc3 d6 3.Nf3 Bg4
A21 English: Kramnik-Shirov Counterattack1.c4 e5 2.Nc3 Bb4
A21 English: Kramnik-Shirov, 3.g31.c4 e5 2.Nc3 Bb4 3.g3
A21 English: Kramnik-Shirov, 3.g3 Bxc31.c4 e5 2.Nc3 Bb4 3.g3 Bxc3
A21 English: Kramnik-Shirov, 3.g3 Bxc3 4.bxc31.c4 e5 2.Nc3 Bb4 3.g3 Bxc3 4.bxc3
A21 English: Kramnik-Shirov, 3.Nd51.c4 e5 2.Nc3 Bb4 3.Nd5
A21 English: Kramnik-Shirov, 3.Nd5 a51.c4 e5 2.Nc3 Bb4 3.Nd5 a5
A21 English: Kramnik-Shirov, 3.Nd5 Ba51.c4 e5 2.Nc3 Bb4 3.Nd5 Ba5
A21 English: Kramnik-Shirov, 3.Nd5 Bc51.c4 e5 2.Nc3 Bb4 3.Nd5 Bc5
A21 English: Kramnik-Shirov, 3.Nd5 Be71.c4 e5 2.Nc3 Bb4 3.Nd5 Be7
A21 English: Kramnik-Shirov, 3.Nd5 Be7 4.d41.c4 e5 2.Nc3 Bb4 3.Nd5 Be7 4.d4
A22 English: King's, 2.Nc3 Nf61.c4 e5 2.Nc3 Nf6
A22 English: Anglo-Indian, 2.Nc3 c6 3.e4 e51.c4 Nf6 2.Nc3 c6 3.e4 e5
A22 English: King's, 2.Nc3 Nf6 3.e41.c4 e5 2.Nc3 Nf6 3.e4
A22 English: King's, 2.Nc3 Nf6 3.e31.c4 e5 2.Nc3 Nf6 3.e3
A22 English: King's, 2.Nc3 Nf6 3.e3 Bb41.c4 e5 2.Nc3 Nf6 3.e3 Bb4
A22 English: King's, 2.Nc3 Nf6 3.Nf31.c4 e5 2.Nc3 Nf6 3.Nf3
A22 English: King's, 2.Nc3 Nf6 3.Nf3 d61.c4 e5 2.Nc3 Nf6 3.Nf3 d6
A22 English: King's, 2.Nc3 Nf6 3.Nf3 e41.c4 e5 2.Nc3 Nf6 3.Nf3 e4
A22 English: Bellon Gambit1.c4 e5 2.Nc3 Nf6 3.Nf3 e4 4.Ng5 b5
A22 English: Bremen System1.c4 e5 2.Nc3 Nf6 3.g3
A22 English: Bremen, 3...Bc51.c4 e5 2.Nc3 Nf6 3.g3 Bc5
A22 English: Bremen, Reverse Dragon1.c4 e5 2.Nc3 Nf6 3.g3 d5
A22 English: Bremen, Reverse Dragon, 4.cxd51.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5
A22 English: Bremen, Reverse Dragon, 4.cxd5 Nxd51.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5
A22 English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 5.Bg21.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2
A22 English: Bremen, Reverse Dragon, 4.cxd5 Nxd5 5.Bg2 Nb61.c4 e5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nb6
A22 English: Bremen, Smyslov System1.c4 e5 2.Nc3 Nf6 3.g3 Bb4
A22 English: Bremen, Smyslov, 4.Bg21.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2
A22 English: Bremen, Smyslov, 4.Bg2 Bxc31.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 Bxc3
A22 English: Bremen, Smyslov, 4.Bg2 O-O1.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 O-O
A22 English: Bremen, Smyslov, 4.Bg2 O-O 5.e41.c4 e5 2.Nc3 Nf6 3.g3 Bb4 4.Bg2 O-O 5.e4
A23 English: Bremen, Keres System1.c4 e5 2.Nc3 Nf6 3.g3 c6
A23 English: Bremen, Keres, 4.Nf31.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3
A23 English: Bremen, Keres, 4.Nf3 d61.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3 d6
A23 English: Bremen, Keres, 4.Nf3 d61.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3 d6 5.Bg2
A23 English: Bremen, Keres, 4.Nf3 e41.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Nf3 e4
A23 English: Bremen, Keres, 4.Bg21.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2
A23 English: Bremen, Keres, 4.Bg2 d51.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5
A23 English: Bremen, Keres, 4.Bg2 d5 5.cxd51.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5 5.cxd5
A23 English: Bremen, Keres, 4.Bg2 d5 5.cxd5 cxd51.c4 e5 2.Nc3 Nf6 3.g3 c6 4.Bg2 d5 5.cxd5 cxd5
A24 English: Bremen, 3...g61.c4 e5 2.Nc3 Nf6 3.g3 g6
A24 English: Bremen, 3...g6 4.Bg21.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2
A24 English: Bremen, 3...g6 4.Bg2 Bg71.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.d31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.d3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e41.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d61.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d6 6.Nf31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nf3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O 7.d31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 O-O 7.d3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf31.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O1.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O
A24 English: Bremen, 3...g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O c61.c4 e5 2.Nc3 Nf6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3 O-O 7.O-O c6
A25 English: Closed1.c4 e5 2.Nc3 Nc6
A25 English: Closed, 3.e31.c4 e5 2.Nc3 Nc6 3.e3
A25 English: Closed, 3.e3 Nf61.c4 e5 2.Nc3 Nc6 3.e3 Nf6
A25 English: Closed, 3.g31.c4 e5 2.Nc3 Nc6 3.g3
A25 English: Closed, 3.g3 f51.c4 e5 2.Nc3 Nc6 3.g3 f5
A25 English: Closed, 3.g3 f5 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2
A25 English: Closed, 3.g3 f5 4.Bg2 Nf61.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6
A25 English: Closed, 3.g3 f5 4.Bg2 Nf6 5.e3 g61.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 5.e3 g6
A25 English: Closed, 3.g3 f5 4.Bg2 Nf6 5.d31.c4 e5 2.Nc3 Nc6 3.g3 f5 4.Bg2 Nf6 5.d3
A25 English: Closed, 3.g3 Nf61.c4 e5 2.Nc3 Nc6 3.g3 Nf6
A25 English: Closed, 3.g3 Nf6 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bc51.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bc5
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bc5 5.e31.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bc5 5.e3
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bb41.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bb4
A25 English: Closed, 3.g3 Nf6 4.Bg2 Bb4 5.Nd51.c4 e5 2.Nc3 Nc6 3.g3 Nf6 4.Bg2 Bb4 5.Nd5
A25 English: Closed, 3.g3 d6 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2
A25 English: Closed, Trצger Defence1.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2 Be6
A25 English: Closed, Trצger Defence, 5.d31.c4 e5 2.Nc3 Nc6 3.g3 d6 4.Bg2 Be6 5.d3
A25 English: Closed, 3.g3 g61.c4 e5 2.Nc3 Nc6 3.g3 g6
A25 English: Closed, 3.g3 g6 4.Bg21.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2
A25 English: Closed, 3.g3 g6 4.Bg2 Bg71.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7
A25 English: Closed, 3.g6 g6 4.Bg2 Bg7 5.e31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3
A25 English: Closed, Taimanov Variation1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Nh6
A25 English: Closed, Hort Variation1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6
A25 English: Closed, Hort Variation, 7.d31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 d6 6.Nge2 Be6 7.d3
A25 English: Closed, 5.Rb11.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1
A25 English: Closed, 5.Rb1, Taimanov Variation1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 Nh6
A25 English: Closed, 5.Rb1 a51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Rb1 a5
A25 English: Closed, 5.e41.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4
A25 English: Closed, 5.d31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3
A25 English: Closed, 5.d3 Nge71.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 Nge7
A26 English: Closed, 5.d3 d61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6
A26 English: Closed, 5.d3 d6 6.e31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e3
A26 English: Closed, 5.d3 d6 6.Rb11.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1
A26 English: Closed, 5.d3 d6 6.Rb1 f51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 f5
A26 English: Closed, 5.d3 d6 6.Rb1 a51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Rb1 a5
A26 English: Closed, 5.d3 d6 6.Nf31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3
A26 English: Closed, 5.d3 d6 6.Nf3 Nf61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb11.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a51.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3
A26 English: Closed, 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3 h61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.Nf3 Nf6 7.O-O O-O 8.Rb1 a5 9.a3 h6
A26 English: Botvinnik System1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4
A26 English: Botvinnik System, 6...Nf61.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6
A26 English: Botvinnik System, 6...Nf6 7.Nf31.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nf3
A26 English: Botvinnik System, 6...Nf6 7.Nf3 O-O 8.O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nf3 O-O 8.O-O
A26 English: Botvinnik System, 6...Nf6 7.Nge21.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nge2
A26 English: Botvinnik System, 6...Nf6 7.Nge2 O-O 8.O-O1.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nf6 7.Nge2 O-O 8.O-O
A26 English: Botvinnik System, 6...Nge71.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nge7
A26 English: Botvinnik System, 6...Nge7 7.Nge21.c4 e5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3 d6 6.e4 Nge7 7.Nge2
A27 English: Three Knights1.c4 e5 2.Nc3 Nc6 3.Nf3
A27 English: Three Knights, 3...Bb41.c4 e5 2.Nc3 Nc6 3.Nf3 Bb4
A27 English: Three Knights, 3...d61.c4 e5 2.Nc3 Nc6 3.Nf3 d6
A27 English: Three Knights, 3...f51.c4 e5 2.Nc3 Nc6 3.Nf3 f5
A27 English: Three Knights, 3...f5 4.d41.c4 e5 2.Nc3 Nc6 3.Nf3 f5 4.d4
A27 English: Three Knights, 3...f5 4.d4 e41.c4 e5 2.Nc3 Nc6 3.Nf3 f5 4.d4 e4
A27 English: Three Knights, 3...g61.c4 e5 2.Nc3 Nc6 3.Nf3 g6
A27 English: Three Knights, 3...g6 4.d41.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4
A27 English: Three Knights, 3...g6 4.d4 exd41.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4 exd4
A27 English: Three Knights, 3...g6 4.d4 exd4 5.Nxd41.c4 e5 2.Nc3 Nc6 3.Nf3 g6 4.d4 exd4 5.Nxd4
A28 English: Four Knights1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6
A28 English: Four Knights, Nimzowitsch Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e4
A28 English: Four Knights, Marini Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.a3
A28 English: Four Knights, Capablanca Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d3
A28 English: Four Knights, 4.d41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4
A28 English: Four Knights, Nenarokov Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 exd4 5.Nxd4 Bb4 6.Bg5 h6 7.Bh4 Bxc3+ 8.bxc3 Ne5
A28 English: Four Knights, Bradley Beach Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4 e4
A28 English: Four Knights, 4.e31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3
A28 English: Four Knights, 4.e3 Bb41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4
A28 English: Four Knights, 4.e3 Bb4 5.Qc21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2
A28 English: Four Knights, Stean Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 O-O 6.Nd5 Re8 7.Qf5
A28 English: Four Knights, Romanishin Variation1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 Bb4 5.Qc2 Bxc3
A29 English: Four Knights, 4.g31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3
A29 English: Four Knights, 4.g3 g61.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 g6
A29 English: Four Knights, 4.g3 g6 5.d41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 g6 5.d4
A29 English: Four Knights, 4.g3 d51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5
A29 English: Four Knights, 4.g3 d5 5.cxd51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be61.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Be6
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb61.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be71.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.Rb11.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.Rb1
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.a3
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d3
A29 English: Four Knights, 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d3 O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5 Nxd5 6.Bg2 Nb6 7.O-O Be7 8.d3 O-O
A29 English: Four Knights, 4.g3 Bc51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5
A29 English: Four Knights, 4.g3 Bc5 5.Bg21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2
A29 English: Four Knights, 4.g3 Bc5 5.Bg2 d6 6.O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 d6 6.O-O
A29 English: Four Knights, 4.g3 Bc5 5.Bg2 d6 6.O-O O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 d6 6.O-O O-O
A29 English: Four Knights, 4.g3 Bc5 5.Bg2 d6 6.O-O O-O 7.d31.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bc5 5.Bg2 d6 6.O-O O-O 7.d3
A29 English: Four Knights, 4.g3 Bb41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4
A29 English: Four Knights, 4.g3 Bb4 5.Nd51.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Nd5
A29 English: Four Knights, 4.g3 Bb4 5.Bg21.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2
A29 English: Four Knights, Main Line 6.O-O1.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O
A29 English: Four Knights, Main Line 6.O-O e41.c4 e5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 Bb4 5.Bg2 O-O 6.O-O e4
A30 English: Symmetrical1.c4 c5
A30 English: Symmetrical, 2.b31.c4 c5 2.b3
A30 English: Symmetrical, 2.g31.c4 c5 2.g3
A30 English: Symmetrical, 2.g3 g61.c4 c5 2.g3 g6
A30 English: Symmetrical, 2.Nf31.c4 c5 2.Nf3
A30 English: Symmetrical, 2.Nf3 b61.c4 c5 2.Nf3 b6
A30 English: Symmetrical, 2.Nf3 b6 3.g31.c4 c5 2.Nf3 b6 3.g3
A30 English: Symmetrical, 2.Nf3 b6 3.g3 Bb7 4.Bg21.c4 c5 2.Nf3 b6 3.g3 Bb7 4.Bg2
A30 English: Symmetrical, 2.Nf3 g61.c4 c5 2.Nf3 g6
A30 English: Symmetrical, 2.Nf3 Nc61.c4 c5 2.Nf3 Nc6
A30 English: Symmetrical, 2.Nf3 Nf61.c4 c5 2.Nf3 Nf6
A30 English: Symmetrical, 2.Nf3 Nf6 3.g31.c4 c5 2.Nf3 Nf6 3.g3
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.Nc3
A30 English: Symmetrical, b6 System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O
A30 English: Symmetrical, Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6
A30 English: Symmetrical, Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.Nc3 Bg7
A30 English: Symmetrical, Mutual Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3
A30 English: Symmetrical, Mutual Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O
A30 English: Symmetrical, Mutual Double Fianchetto1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.Nc3
A30 English: Symmetrical, Mutual Double Fianchetto with ...d51.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O g6 6.b3 Bg7 7.Bb2 O-O 8.Nc3 d5
A30 English: Symmetrical, Hedgehog System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6
A30 English: Symmetrical, Hedgehog System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3
A30 English: Symmetrical, Hedgehog System, 6...a61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 a6
A30 English: Symmetrical, Hedgehog System, 6...d61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 d6
A30 English: Symmetrical, Hedgehog System, 6...d6 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 d6 7.b3
A30 English: Symmetrical, Hedgehog System, 6...d6 7.d41.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 d6 7.d4
A30 English: Symmetrical, Hedgehog System1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7
A30 English: Symmetrical, Hedgehog System, 7.Re11.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.Re1
A30 English: Symmetrical, Hedgehog System, 7.Re1 d51.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.Re1 d5
A30 English: Symmetrical, Hedgehog System, 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3
A30 English: Symmetrical, Hedgehog System, 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3 O-O
A30 English: Symmetrical, Hedgehog System, 7.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.b3 O-O 8.Bb2 d6
A30 English: Symmetrical, Hedgehog System, 7.d41.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4
A30 English: Symmetrical, Hedgehog System, 8.Qxd41.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 O-O1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 O-O
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 O-O1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 O-O 9.Rd1 Nc6
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 Nc61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 Nc6
A30 English: Symmetrical, Hedgehog System, 8.Qxd4 d61.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6
A30 English: Symmetrical, Hedgehog System, 9.b31.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.b3
A30 English: Symmetrical, Hedgehog System, 9.b3 Nbd71.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.b3 Nbd7
A30 English: Symmetrical, Hedgehog System, 9.b3 Nbd7 10.Nb51.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.b3 Nbd7 10.Nb5
A30 English: Symmetrical, Hedgehog System, 9.Rd11.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1
A30 English: Symmetrical, Hedgehog System, Flexible Formation1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7
A30 English: Symmetrical, Hedgehog System, Flexible Formation1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4
A30 English: Symmetrical, Hedgehog System, Flexible Formation, 11.e4 Qc71.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4 Qc7
A30 English: Symmetrical, Hedgehog System, Flexible Formation, 11.e4 O-O1.c4 c5 2.Nf3 Nf6 3.g3 b6 4.Bg2 Bb7 5.O-O e6 6.Nc3 Be7 7.d4 cxd4 8.Qxd4 d6 9.Rd1 a6 10.b3 Nbd7 11.e4 O-O
A31 English: Symmetrical, Two Knights, 1.c4 c5 2.Nf3 Nf6 3.d41.c4 c5 2.Nf3 Nf6 3.d4
A31 English: Symmetrical, Two Knights, 3...a61.c4 c5 2.Nf3 Nf6 3.d4 a6
A31 English: Symmetrical, Two Knights, 3...g61.c4 c5 2.Nf3 Nf6 3.d4 g6
A31 English: Symmetrical, Two Knights, 3...g6 4.d51.c4 c5 2.Nf3 Nf6 3.d4 g6 4.d5
A31 English: Symmetrical, Two Knights, 3...g6 4.Nc31.c4 c5 2.Nf3 Nf6 3.d4 g6 4.Nc3
A31 English: Symmetrical, Two Knights, 3..cxd41.c4 c5 2.Nf3 Nf6 3.d4 cxd4
A31 English: Symmetrical, Two Knights, 3..cxd4 4.Nxd41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4
A31 English: Symmetrical, Two Knights, 4...b61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 b6
A31 English: Symmetrical, Two Knights, 4...b6 5.Nc3 Bb71.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 b6 5.Nc3 Bb7
A31 English: Symmetrical, Two Knights, 4...g61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6
A31 English: Symmetrical, Two Knights, 4...g6 5.Nc31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6 5.Nc3
A31 English: Symmetrical, Two Knights, 4...g6 5.Nc3 Bg71.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7
A31 English: Symmetrical, Two Knights, 4...g61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 g6 5.Nc3 Bg7 6.e4
A31 English: Symmetrical, Two Knights, 4...Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 Nc6
A31 English: Symmetrical, Two Knights, 4...Nc6 5.Nc31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3
A31 English: Symmetrical, Two Knights, 4...Nc6 5.Nc3 g61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 Nc6 5.Nc3 g6
A31 English: Symmetrical, Two Knights, 4...e51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e5
A31 English: Symmetrical, Two Knights, 4...e5 5.Nb51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e5 5.Nb5
A32 English: Symmetrical, Two Knights, 4...e61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6
A32 English: Symmetrical, Two Knights, 5.e31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.e3
A32 English: Symmetrical, Two Knights, 5.g31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3
A32 English: Symmetrical, Two Knights, 5.g3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 a6
A32 English: Symmetrical, Two Knights, 5.g3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 a6 6.Bg2
A32 English: Symmetrical, Two Knights, 5.g3 Qb61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Qb6
A32 English: Symmetrical, Two Knights, 5.g3 Qb6 6.Bg21.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Qb6 6.Bg2
A32 English: Symmetrical, Two Knights, 5.g3 Qc71.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Qc7
A32 English: Symmetrical, Two Knights, 5.g3 Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Nc6
A32 English: Symmetrical, Two Knights, 5.g3 Nc6 6.Bg21.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Nc6 6.Bg2
A32 English: Symmetrical, Two Knights, 5.g3 Bb4+1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 Bb4+
A32 English: Symmetrical, Two Knights, 5.g3 d51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.g3 d5
A32 English: Symmetrical, Two Knights, 5.Nc31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3
A32 English: Symmetrical, Two Knights, 5.Nc3 d51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 d5
A32 English: Symmetrical, Two Knights, 5.Nc3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 a6
A32 English: Symmetrical, Two Knights, 5.Nc3 a6 6.g31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 a6 6.g3
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Qb31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Qb3
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Nb51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Nb5
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Bd21.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Bd2
A32 English: Symmetrical, Two Knights, 5.Nc3 Bb4 6.Bd2 Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Bb4 6.Bd2 Nc6
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Bf41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Bf4
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Bg51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Bg5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.e31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.e3
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.a3
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.a3 Bc51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.a3 Bc5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 Bb41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5 Bb4
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 d51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5 d5
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.Ndb5 d5 Queenswap1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.Ndb5 d5 7.Bf4 e5 8.cxd5 exf4 9.dxc6 bxc6 10.Qxd8+ Kxd8
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 a61.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 a6
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 Bb41.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Bb4
A33 English: Symmetrical, Two Knights, 5.Nc3 Nc6 6.g3 Bc51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Bc5
A33 English: Symmetrical, Geller Variation1.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6
A33 English: Symmetrical, Geller, 7.Nb31.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6 7.Nb3
A33 English: Symmetrical, Geller, 7.Nb3 Ne51.c4 c5 2.Nf3 Nf6 3.d4 cxd4 4.Nxd4 e6 5.Nc3 Nc6 6.g3 Qb6 7.Nb3 Ne5
A34 English: Symmetrical1.c4 c5 2.Nc3
A34 English: Symmetrical, 2...b61.c4 c5 2.Nc3 b6
A34 English: Symmetrical, 2...b6 3.Nf31.c4 c5 2.Nc3 b6 3.Nf3
A34 English: Symmetrical, 2...b6 3.Nf3 Bb71.c4 c5 2.Nc3 b6 3.Nf3 Bb7
A34 English: Symmetrical, 2...g61.c4 c5 2.Nc3 g6
A34 English: Symmetrical, 2...g6 3.Nf31.c4 c5 2.Nc3 g6 3.Nf3
A34 English: Symmetrical, 2...g6 3.g31.c4 c5 2.Nc3 g6 3.g3
A34 English: Symmetrical, 2...g6 3.g3 Bg7 4.Bg21.c4 c5 2.Nc3 g6 3.g3 Bg7 4.Bg2
A34 English: Symmetrical, 2...Nf61.c4 c5 2.Nc3 Nf6
A34 English: Symmetrical, 2...Nf6 3.g31.c4 c5 2.Nc3 Nf6 3.g3
A34 English: Symmetrical, 2...Nf6 3.g3 d51.c4 c5 2.Nc3 Nf6 3.g3 d5
A34 English: Symmetrical, 2...Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg21.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2
A34 English: Symmetrical, Rubinstein System1.c4 c5 2.Nc3 Nf6 3.g3 d5 4.cxd5 Nxd5 5.Bg2 Nc7
A34 English: Symmetrical, 3 Knight's1.c4 c5 2.Nc3 Nf6 3.Nf3
A34 English: Symmetrical, 3 Knight's, 3...b61.c4 c5 2.Nc3 Nf6 3.Nf3 b6
A34 English: Symmetrical, 3 Knight's, 3...e61.c4 c5 2.Nc3 Nf6 3.Nf3 e6
A34 English: Symmetrical, 3 Knight's, 3...e6 4.g31.c4 c5 2.Nc3 Nf6 3.Nf3 e6 4.g3
A34 English: Symmetrical, 3 Knight's, 3...g61.c4 c5 2.Nc3 Nf6 3.Nf3 g6
A34 English: Symmetrical, 3 Knight's1.c4 c5 2.Nc3 Nf6 3.Nf3 d5
A34 English: Symmetrical, 3 Knight's, Exchange1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5
A34 English: Symmetrical, 3 Knight's, 5.g31.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.g3
A34 English: Symmetrical, 3 Knight's, 5.e41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4
A34 English: Symmetrical, 3 Knight's, 5.e4 Nxc31.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nxc3
A34 English: Symmetrical, 3 Knight's, Queen Swap1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nxc3 6.dxc3 Qxd1+ 7.Kxd1
A34 English: Symmetrical, 3 Knight's, 5.e4 Nb41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4
A34 English: Symmetrical, 3 Knight's, 5.e4 Nb4 6.Bb5+1.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4 6.Bb5+
A34 English: Symmetrical, 3 Knight's, 5.e4 Nb4 6.Bc41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.e4 Nb4 6.Bc4
A34 English: Symmetrical, 3 Knight's, 5.d41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.d4
A34 English: Symmetrical, 3 Knight's, 5.d4 cxd41.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.d4 cxd4
A34 English: Symmetrical, 3 Knight's, 5.d4 Nxc31.c4 c5 2.Nc3 Nf6 3.Nf3 d5 4.cxd5 Nxd5 5.d4 Nxc3
A35 English: Symmetrical1.c4 c5 2.Nc3 Nc6
A35 English: Symmetrical, 2.Nc3 Nc6 3.e31.c4 c5 2.Nc3 Nc6 3.e3
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf31.c4 c5 2.Nc3 Nc6 3.Nf3
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf3 g61.c4 c5 2.Nc3 Nc6 3.Nf3 g6
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf3 g6 4.e31.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3
A35 English: Symmetrical, 2.Nc3 Nc6 3.Nf3 g6 4.e3 Bg71.c4 c5 2.Nc3 Nc6 3.Nf3 g6 4.e3 Bg7
A35 English: Symmetrical, Four Knights1.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6
A35 English: Symmetrical, Four Knights, 4.d41.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.d4
A35 English: Symmetrical, Four Knights, 4.e31.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3
A35 English: Symmetrical, Four Knights, 4.e3 e51.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.e3 e5
A35 English: Symmetrical, Four Knights, 4.g31.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3
A35 English: Symmetrical, Four Knights, 4.g3 d51.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5
A35 English: Symmetrical, Four Knights, 4.g3 d5 5.cxd51.c4 c5 2.Nc3 Nc6 3.Nf3 Nf6 4.g3 d5 5.cxd5
A36 English: Symmetrical, 3.g31.c4 c5 2.Nc3 Nc6 3.g3
A36 English: Symmetrical, 3.g3 Nf61.c4 c5 2.Nc3 Nc6 3.g3 Nf6
A36 English: Symmetrical, 3.g3 e61.c4 c5 2.Nc3 Nc6 3.g3 e6
A36 English: Symmetrical, 3.g3 e6 4.Nf31.c4 c5 2.Nc3 Nc6 3.g3 e6 4.Nf3
A36 English: Symmetrical, Keres-Parma System1.c4 c5 2.Nc3 Nc6 3.g3 e6 4.Nf3 Nf6
A36 English: Symmetrical, Keres-Parma, Main Line Exchange1.c4 c5 2.Nc3 Nc6 3.g3 e6 4.Nf3 Nf6 5.Bg2 Be7 6.O-O d5 7.cxd5 Nxd5
A36 English: Symmetrical, 3.g3 g61.c4 c5 2.Nc3 Nc6 3.g3 g6
A36 English: Symmetrical, 3.g3 g6 4.Bg21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2
A36 English: Symmetrical, 3.g3 g6 4.Bg2 Bg71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7
A36 English: Symmetrical, 5.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.d3
A36 English: Symmetrical, 5.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3
A36 English: Symmetrical, 5.a3 e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3 e6
A36 English: Symmetrical, 5.a3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.a3 d6
A36 English: Symmetrical, 5.b31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.b3
A36 English: Symmetrical, 5.e31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3
A36 English: Symmetrical, 5.e3 e5 (Botvinnik Reversed)1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e5
A36 English: Symmetrical, 5.e3 e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e6
A36 English: Symmetrical, 5.e3 e6 6.Nge21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e6 6.Nge2
A36 English: Symmetrical, 5.e3 e6 6.Nge2 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e3 e6 6.Nge2 Nge7
A36 English: Symmetrical, Botvinnik System1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4
A36 English: Symmetrical, Botvinnik System, 5...Nf61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 Nf6
A36 English: Symmetrical, Botvinnik System, 5...Nf6 6.Nge21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 Nf6 6.Nge2
A36 English: Symmetrical, Botvinnik System, 5...e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6
A36 English: Symmetrical, Botvinnik System, 5...e6 6.Nge2 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7
A36 English: Symmetrical, Botvinnik System, 5...e6, 8.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7 7.O-O O-O 8.d3
A36 English: Symmetrical, Botvinnik System, 5...e6, 8.d3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 e6 6.Nge2 Nge7 7.O-O O-O 8.d3 d6
A36 English: Symmetrical, Botvinnik System, 5...d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6
A36 English: Symmetrical, Botvinnik System, 5...d6 6.Nge21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2
A36 English: Symmetrical, Botvinnik System, 5...d6 6.Nge2 Nf61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6
A36 English: Symmetrical, Botvinnik System, 5...d6, 7.O-O O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d3 Rb81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 Rb8
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d3 Ne81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 Ne8
A36 English: Symmetrical, Botvinnik System, 5...d6, 8.d3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.e4 d6 6.Nge2 Nf6 7.O-O O-O 8.d3 a6
A37 English: Symmetrical, 5.Nf31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3
A37 English: Symmetrical, 5.Nf3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 a6
A37 English: Symmetrical, 5.Nf3 Nh61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nh6
A37 English: Symmetrical, 5.Nf3 Nh6 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nh6 6.O-O
A37 English: Symmetrical, 5.Nf3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6
A37 English: Symmetrical, 5.Nf3 d6 6.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.d3
A37 English: Symmetrical, 5.Nf3 d6 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O
A37 English: Symmetrical, 5.Nf3 d6 6.O-O Nh61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 d6 6.O-O Nh6
A37 English: Symmetrical, 5.Nf3 e61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6
A37 English: Symmetrical, 5.Nf3 e6 6.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.d3
A37 English: Symmetrical, 5.Nf3 e6 6.e31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.e3
A37 English: Symmetrical, 5.Nf3 e6 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.e31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.e3
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d3 O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3 O-O
A37 English: Symmetrical, 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e6 6.O-O Nge7 7.d3 O-O 8.Bd2
A37 English: Symmetrical, 5.Nf3 e51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5
A37 English: Symmetrical, 5.Nf3 e5 6.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.a3
A37 English: Symmetrical, 5.Nf3 e5 6.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.d3
A37 English: Symmetrical, 5.Nf3 e5 6.d3 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.d3 Nge7
A37 English: Symmetrical, 5.Nf3 e5 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d6 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6 7.d3
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d6 7.d3 Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6 7.d3 Nge7
A37 English: Symmetrical, 5.Nf3 e5 6.O-O d6 7.d3 Nge7 8.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O d6 7.d3 Nge7 8.a3
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge71.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d3 O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3 O-O
A37 English: Symmetrical, 5.Nf3 e5 6.O-O Nge7 7.d3 O-O 8.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 e5 6.O-O Nge7 7.d3 O-O 8.a3
A38 English: Symmetrical, Main Line1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6
A38 English: Symmetrical, Main Line, 6.d41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.d4
A38 English: Symmetrical, Main Line, 6.O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O
A38 English: Symmetrical, Main Line, 6.O-O d51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O d5
A38 English: Symmetrical, Main Line, 6.O-O d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O d6
A38 English: Symmetrical, Main Line, 6.O-O O-O1.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O
A38 English: Symmetrical, Main Line, 7.Rb11.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.Rb1
A38 English: Symmetrical, Main Line, 7.b31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.b3
A38 English: Symmetrical, Main Line, 7.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.a3
A38 English: Symmetrical, Main Line, 7.a3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.a3 d6
A38 English: Symmetrical, Main Line, 7.d31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3
A38 English: Symmetrical, Main Line, 7.d3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 a6
A38 English: Symmetrical, Main Line, 7.d3 d51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d5
A38 English: Symmetrical, Main Line, 7.d3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6
A38 English: Symmetrical, Main Line, 7.d3 d6 8.Rb11.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Rb1
A38 English: Symmetrical, Main Line, 7.d3 d6 8.Bd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.Bd2
A38 English: Symmetrical, Main Line, 7.d3 d6 8.a31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.a3
A38 English: Symmetrical, Main Line, 7.d3 d6 8.a3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d3 d6 8.a3 a6
A39 English: Symmetrical, Main Line 7.d41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4
A39 English: Symmetrical, Main Line 7.d4 cxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4
A39 English: Symmetrical, Main Line 7.d4 cxd4 8.Nxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4
A39 English: Symmetrical, Main Line 7.d4, 8...Qa51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qa5
A39 English: Symmetrical, Main Line 7.d4, 8...Qb61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qb6
A39 English: Symmetrical, Main Line 7.d4, 8...Qb61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Qb6 9.Nc2
A39 English: Symmetrical, Main Line 7.d4, 8...a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 a6
A39 English: Symmetrical, Main Line 7.d4, 8...d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 d6
A39 English: Symmetrical, Main Line 7.d4, 8...Ng41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Ng4
A39 English: Symmetrical, Main Line 7.d4, 8...Ng4 9.e3 d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Ng4 9.e3 d6
A39 English: Symmetrical, Main Line 7.d4, 8...Nxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4
A39 English: Symmetrical, Main Line 7.d4, 9.Qxd41.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4
A39 English: Symmetrical, Main Line 7.d4, 9...d61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6
A39 English: Symmetrical, Main Line 7.d4, 10.Qd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd2
A39 English: Symmetrical, Main Line 7.d4, 10.Qd31.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 Bf51.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 Bf5
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 Rb81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 Rb8
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a61.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a6 11.Bd21.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a6 11.Bd2 Rb81.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2 Rb8
A39 English: Symmetrical, Main Line 7.d4, 10.Qd3 a6 11.Bd2 Rb8 12.Rac11.c4 c5 2.Nc3 Nc6 3.g3 g6 4.Bg2 Bg7 5.Nf3 Nf6 6.O-O O-O 7.d4 cxd4 8.Nxd4 Nxd4 9.Qxd4 d6 10.Qd3 a6 11.Bd2 Rb8 12.Rac1

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[1]

@@ שורה 1: / שורה 1: @@
+{{פירוש נוסף|נוכחי=פתיחה במשחק שחמט|אחר=מהלך בבורסה|ראו=[[פתיחה אנגלית (בורסה)]]}}
 '''פתיחה אנגלית''' היא פתיחה ב[[שחמט]]. בפתיחה זו הלבן נמנע מלכבוש את המרכז (למשל על ידי 1. ד2-ד4)
 והוא מבכר לנהל מאבק עקיף על השליטה בו על ידי הפתיחה האגפית:  1. ג4 ..., ובד בבד גם מנסה למנוע את כיבושו על ידי השחור.