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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Rh7 0
3 d6 0
4 d5 0
5 e5 0
6 a5 0
7 Bb7 0
8 Ba6 0
9 f5 0
10 h5 0
11 e6 0
12 Rb8 0
13 Bg7 0