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

Book: ∞ / 0

# move proof disproof
1 Kh7 0
2 Kf7 0
3 Kf6 0
4 a5 0
5 Rh7 0
6 e5 0
7 a6 0
8 Bb7 0
9 Kh5 0
10 Bd7 0
11 Ba6 0
12 h5 0
13 Kg5 0
14 Kf5 0
15 Nf6 0
16 Rb8 0