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 g5 0
4 Bb7 0
5 Ke7 0
6 Kf7 0
7 Kg7 0
8 Ba6 0
9 Rb8 0
10 Ke8 0
11 Kg8 0
12 d5 0
13 d6 0