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

Book: 50 / 156

# move proof disproof
1 a5 25 50
2 a6 25 50
3 c6 4 50
4 c5 4 50
5 Ke8 1 50
6 Ng4 51 51
7 Ba6 24 51
8 Kc6 2 51
9 Kd6 2 51
10 e6 1 51
11 Nf7 2 52
12 Ng8 2 52
13 Nf5 1 52
14 Ke6 1 52
15 Nc6 1 52
16 e5 1 52
17 f5 1 52
18 Na6 1 53
19 Qe8 1 72
20 Bb7 1 72
21 g6 1 72
22 Rg8 2 74
23 g5 2 74