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

Book: 40 / 226

# move proof disproof
1 f5 40 40
2 Kc6 2 40
3 Ke8 2 40
4 Ke6 1 40
5 Ng4 113 41
6 Nf5 28 41
7 Kd6 1 48
8 g5 1 48
9 Bb7 1 49
10 Nf7 2 50
11 a6 1 50
12 g6 1 50
13 a5 1 50
14 c5 1 50
15 Ng8 1 50
16 Na6 1 50
17 Rg8 1 50
18 Qe8 1 50
19 e5 1 51
20 Nc6 1 51
21 Ba6 1 52
22 e6 1 52
23 c6 23 424