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 Kg6 0
4 g6 0
5 Ba6 0
6 Rb8 0
7 Kg5 0
8 Kh5 0
9 g5 0
10 Nf6 0
11 e5 0
12 Bd7 0
13 Bb7 0