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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Kd8 0
3 a6 0
4 g4 0
5 Bg7 0
6 Nf6 0
7 d6 0
8 b6 0
9 Rh7 0
10 f6 0
11 e6 0
12 h5 0
13 e5 0
14 d5 0
15 f5 0