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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Nh6 0
3 a5 0
4 h4 0
5 Bd7 0
6 Nf6 0
7 Rh6 0
8 Rh7 0
9 Rb8 0
10 e5 0
11 Ba6 0
12 Bb7 0