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

Book: 45 / 107

# move proof disproof
1 e4 1 45
2 Na3 1 45
3 h3 2 65
4 Ke2 25 87
5 Qb3 2 87
6 Ne2 26 88
7 Qa4 5 90
8 d4 1 90
9 b4 1 91
10 c5 1 93
11 Qc2 2 97
12 g4 1 97
13 f4 28 98
14 b3 1 103
15 g3 1 103
16 a4 1 103
17 Nc3 1 103
18 Nh3 1 103
19 Qe2 1 103
20 Kf1 1 103
21 Kf2 1 103
22 d3 1 104
23 a3 1 105
24 h4 1 105