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

Book: 53 / 154

# move proof disproof
1 Ke8 1 53
2 Ba6 1 53
3 f5 1 53
4 Ng4 47 54
5 Nf7 26 54
6 Kc6 1 54
7 e5 1 54
8 c6 1 54
9 a5 1 54
10 Na6 1 54
11 Nc6 1 54
12 Rg8 1 54
13 Qe8 1 54
14 Nf5 20 55
15 Ke6 1 56
16 c5 1 56
17 Kd6 1 56
18 e6 1 56
19 g6 1 69
20 Ng8 21 70
21 Bb7 1 74
22 g5 22 75
23 a6 1 88