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

Book: 48 / 209

# move proof disproof
1 Kc6 2 48
2 a6 1 48
3 Ke6 1 48
4 f5 1 50
5 h5 1 50
6 Rg8 32 51
7 a5 1 51
8 c5 1 51
9 Na6 1 51
10 Nc6 1 51
11 e5 1 52
12 e6 1 52
13 Kd6 1 59
14 g5 43 62
15 Ke8 2 63
16 Bb7 1 63
17 Ba6 1 64
18 c6 1 64
19 Qe8 24 69
20 g6 22 73
21 h6 70 167