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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 f6 0
3 Kd8 0
4 Kc8 0
5 Kb8 0
6 Bg7 0
7 a6 0
8 Kb6 0
9 c5 0
10 Kd7 0
11 Rb8 0
12 Ra8 0
13 Rc8 0
14 Kb7 0
15 Nh6 0
16 a5 0
17 e6 0
18 Rd8 0
19 Bh6 0
20 Kd6 0
21 Nf6 0