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

Book: 57 / 260

# move proof disproof
1 g4 105 57
2 Nc6 29 57
3 c5 20 57
4 h5 6 58
5 Bh6 2 58
6 e5 1 58
7 f5 1 58
8 d5 1 59
9 e6 1 59
10 d6 1 68
11 Bb7 1 68
12 Nh6 17 72
13 f6 17 73
14 Bg7 1 73
15 a5 21 75
16 c6 19 76
17 h6 16 76
18 Nf6 1 78