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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 e5 0
3 Bd7 0
4 h5 0
5 Bb7 0
6 Rg8 0
7 h6 0
8 Ra7 0
9 g5 0
10 g6 0
11 Rb8 0