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

Book: 73 / 190

# move proof disproof
1 c6 24 73
2 Nb8 21 73
3 g4 3 73
4 Nh6 2 73
5 h5 1 73
6 d6 1 73
7 Nb4 26 74
8 d5 1 74
9 b5 1 74
10 Bh6 1 75
11 e6 1 75
12 Bg7 1 75
13 e5 1 77
14 f5 1 78
15 Nf6 1 78
16 h6 19 79
17 f6 19 80
18 c5 23 81
19 Nc5 2 88
20 b6 21 93
21 Rb8 20 93