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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Bh6 0
3 a5 0
4 Bd7 0
5 Ba6 0
6 Nf6 0
7 Bb7 0
8 Rb8 0
9 h5 0
10 Nh6 0
11 Bg7 0
12 e5 0
13 h6 0