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

Book: 24 / 281

# move proof disproof
1 f5 1 24
2 Rg8 135 29
3 Nf5 37 29
4 Ke8 2 29
5 Ke6 2 29
6 Kc6 2 29
7 Ba6 4 30
8 Ng4 24 39
9 Bb7 2 40
10 c6 1 41
11 g6 1 41
12 g5 1 41
13 Qe8 1 41
14 Nf7 23 42
15 Na6 1 42
16 c5 1 42
17 a5 1 43
18 Nc6 1 43
19 Ng8 19 44
20 Kd6 1 44
21 e5 1 44
22 e6 1 44
23 a6 19 59