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Chess Opening Explorer
1. d4 d5   2. c4 e6   3. Nc3 Nf6   4. Nf3 c6   5. e3 Nbd7   6. Bd3 dxc4   7. Bxc4 b5   8. Bd3 a6   9. e4 
diagram
Black to move
1,836,711 games · 1475-2025
 move games white wins - draws - black wins %
9...e4  860,535

37.6%

32.5%

29.9%
9...d4  638,046

37.6%

35.4%

27.1%
9...Nf3  172,129

37.1%

37.9%

25.1%
9...c4  131,684

38%

36.1%

25.9%
9...g3  12,641

37.7%

35.4%

26.8%
9...f4  6,907

33.1%

24.8%

42.1%
9...b3  6,845

37.2%

29.6%

33.3%
9...Nc3  2,864

38.1%

25.2%

36.7%
9...b4  1,723

31.9%

22.8%

45.4%
9...e3  891

33.3%

20.7%

46%
9...d3  651

37.3%

24.3%

38.4%
9...a3  569

35.9%

21.6%

42.5%
9...g4  462

44.4%

13.4

42.2%
9...c3  348

39.1%

21.6%

39.4%
9...h3  128

46.9%

20.3%

32.8%
9...f3  47

40.4%


48.9%
9...Nh3  42

54.8%

16.7

28.6%
9...h4  39

46.2%

17.9

35.9%
9...Na3  37

64.9%


24.3%
9...a4  29

34.5%

31%

34.5%

9.c4 +0.18 (37 ply) STOCKFISH   EDIT NOTES

NOTABLE GAMES:
D Byrne vs Fischer, 1956
Kasparov vs Topalov, 1999
Anderssen vs Kieseritzky, 1851
Morphy vs Duke Karl / Count Isouard, 1858
Rotlewi vs Rubinstein, 1907

DEBUT: Castellvi vs Vinyoles, 1475
RECENT: K Shiven vs R Pruijssers, 2011

GAME COLLECTIONS:
DA Kid
Boris Spassky's 400 Selected Games
Queen's Indian Defense 2 pt. 1 (1-400)
Other games
Player of the day: notable game III

OPENING DESIGNATIONS:
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