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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 a6 0
3 Rh8 0
4 h6 0
5 h5 0
6 Bd7 0
7 Bb7 0
8 g5 0
9 e5 0
10 Ba6 0
11 g6 0
12 Rb8 0