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

Book: 57 / 213

# move proof disproof
1 g4 101 57
2 Nc6 2 57
3 a5 1 57
4 c5 1 57
5 f5 1 57
6 e6 1 58
7 e5 1 58
8 d5 1 58
9 h5 16 69
10 d6 1 69
11 f6 16 71
12 Bb7 1 71
13 c6 19 76
14 Nh6 17 76
15 h6 16 76
16 Nf6 1 77
17 Bh6 16 78
18 Bg7 1 78