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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 g5 0
3 Kg7 0
4 Kf7 0
5 Ke7 0
6 Bb7 0
7 Kg8 0
8 Ke8 0
9 d6 0
10 d5 0
11 Ba6 0
12 Rb8 0
13 a5 0