Click on the third or sixth rank to set the en passant target square.

Book: 106 / 2504

# move proof disproof
1 b4 362 106
2 d4 21 106
3 Qg4 13 106
4 Qf3 6 106
5 Bc4 4 106
6 Bb5 3 106
7 e4 1 106
8 h4 1 106
9 h3 1 106
10 g4 1 106
11 Ba6 2056 107
12 Qe2 1 107
13 d3 1 110
14 Qh5 8 111
15 Ne2 6 112
16 Na3 1 115
17 Nh3 1 116
18 Bd3 3 118
19 c3 1 118
20 c4 1 120
21 a3 1 120
22 g3 1 122
23 f4 1 122
24 Nf3 1 122
25 Nc3 1 122
26 Ke2 2 123
27 b3 1 123
28 f3 1 123
29 Be2 1 123
30 a4 2 130