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

Book: ∞ / 0

# move proof disproof
1 g4 0
2 Ba6 0
3 Kh7 0
4 Kg6 0
5 Rb8 0
6 Nf6 0
7 Bb7 0
8 a6 0
9 Kf6 0
10 Rh7 0
11 Kf7 0
12 a5 0
13 h5 0
14 e5 0
15 Bd7 0