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

Book: 72 / 125

# move proof disproof
1 e6 1 72
2 Ng4 36 73
3 Ke8 1 73
4 e5 1 73
5 Kd6 1 73
6 Kc6 1 73
7 Ba6 1 73
8 f5 2 74
9 Ke6 1 74
10 g5 22 76
11 Na6 1 77
12 Qe8 1 77
13 Rg8 1 77
14 g6 1 77
15 Nf7 2 79
16 a5 1 80
17 c5 1 80
18 Ng8 1 80
19 Nf5 2 83
20 Nc6 1 86
21 Bb7 1 90
22 c6 24 338
23 a6 21 413