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

Book: ∞ / 0

# move proof disproof
1 Ke8 0
2 Kc8 0
3 Rc8 0
4 c5 0
5 c6 0
6 f5 0
7 f6 0
8 Bg7 0
9 a5 0
10 Kd7 0
11 Bh6 0
12 Nf6 0
13 Rb8 0
14 a6 0
15 e6 0
16 Nh6 0