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

Book: ∞ / 0

# move proof disproof
1 Ke7 0
2 h5 0
3 h6 0
4 Ke6 0
5 c4 0
6 Nb8 0
7 Ke8 0
8 Kd8 0
9 Kc7 0
10 Kc6 0
11 Kd6 0
12 Bh6 0
13 Bd6 0
14 Bg7 0
15 Rg8 0
16 Bb7 0
17 Nb4 0
18 Be7 0
19 Rb8 0
20 Nc7 0
21 d4 0