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

Book: 99 / 3449

# move proof disproof
1 b4 1932 99
2 Ba6 1384 99
3 Qh5 8 99
4 a3 7 99
5 Qg4 7 99
6 h4 2 99
7 Bb5 1 99
8 d4 1 99
9 f4 1 99
10 b3 1 99
11 c3 1 99
12 g3 1 99
13 h3 1 99
14 Be2 1 99
15 f3 1 99
16 Nf3 1 99
17 Na3 1 99
18 Qe2 2 100
19 Nh3 1 100
20 e4 1 101
21 g4 1 102
22 a4 3 103
23 Bd3 2 104
24 d3 29 108
25 Ne2 23 109
26 Ke2 23 109
27 Bc4 4 111
28 Qf3 6 117
29 Nc3 2 119
30 c4 1 125