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

Book: 51 / 217

# move proof disproof
1 Nf7 25 51
2 Rg8 21 51
3 g5 3 51
4 Nc6 1 51
5 c5 1 51
6 a5 1 51
7 Ke6 1 51
8 a6 1 51
9 c6 1 51
10 Ng4 128 52
11 f5 1 52
12 Kc6 1 52
13 Ke8 1 52
14 e5 1 53
15 e6 1 53
16 Nf5 1 53
17 Ba6 1 54
18 Kd6 2 69
19 Qe8 1 69
20 g6 1 69
21 Ng8 21 71
22 Na6 1 71
23 Bb7 1 76