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

Book: 78 / 108

# move proof disproof
1 Ke8 3 78
2 c6 3 78
3 g5 3 78
4 g6 3 78
5 a5 2 78
6 Ke6 2 78
7 Bb7 2 78
8 Ba6 4 79
9 Rg8 3 79
10 Na6 1 79
11 Qe8 3 80
12 e5 3 80
13 c5 3 80
14 e6 1 80
15 Kd6 1 80
16 h5 3 81
17 f5 1 84
18 Nc6 2 88
19 Kc6 3 90
20 h6 33 484
21 a6 29 511