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

Book: 70 / 167

# move proof disproof
1 a6 17 70
2 Ke8 6 70
3 e5 1 70
4 e6 1 71
5 a5 1 71
6 Bb7 4 73
7 c5 2 73
8 Ng4 35 74
9 g5 22 76
10 Kd6 23 78
11 Kc6 11 79
12 Rg8 1 81
13 Ke6 5 82
14 Nf5 6 83
15 Ba6 1 84
16 Nc6 1 84
17 Na6 1 84
18 Ng8 2 85
19 Qe8 1 85
20 Nf7 4 87
21 f5 1 87
22 g6 1 88
23 c6 20 91