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

Book: ∞ / 0

# move proof disproof
1 Kc7 0
2 Kc8 0
3 Kd8 0
4 Ke8 0
5 f5 0
6 f6 0
7 Re8 0
8 Rd8 0
9 c5 0
10 Kd6 0
11 Rc8 0
12 a6 0
13 Ke6 0
14 Rb8 0
15 e6 0
16 Nf6 0
17 a5 0
18 Nh6 0
19 Bg7 0
20 Bh6 0