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

Book: 52 / 238

# move proof disproof
1 g4 157 52
2 h5 2 52
3 Nh6 1 52
4 Nf6 1 53
5 d6 1 54
6 Bb7 1 54
7 f5 1 55
8 f6 16 56
9 d5 1 56
10 c6 19 57
11 h6 16 57
12 a5 1 57
13 Nc6 1 58
14 c5 1 58
15 Bg7 1 58
16 Bh6 16 59
17 e6 1 59
18 e5 1 60