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

Book: 49 / 179

# move proof disproof
1 a6 20 49
2 g5 3 49
3 Nf5 2 49
4 Ke8 1 49
5 Kc6 1 49
6 Ng4 47 51
7 Ng8 21 51
8 Ke6 1 51
9 Ba6 1 51
10 Nf7 25 52
11 f5 1 52
12 Na6 1 52
13 Bb7 1 52
14 c5 1 52
15 Kd6 1 53
16 a5 1 53
17 Nc6 1 53
18 e5 1 54
19 e6 1 54
20 Qe8 1 66
21 g6 1 66
22 Rg8 22 72
23 c6 24 186