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

Book: 49 / 181

# move proof disproof
1 d5 2 49
2 Nb8 38 50
3 f5 31 50
4 Nc5 26 50
5 Nb4 19 50
6 c6 3 50
7 c5 4 51
8 b5 3 51
9 b6 3 51
10 Nh6 3 51
11 Rb8 3 51
12 Nf6 5 52
13 Bg7 27 60
14 e5 3 64
15 d6 2 64
16 e6 2 64
17 f6 1 64
18 h6 2 67
19 Bh6 2 67
20 h5 2 68