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

Book: ∞ / 0

# move proof disproof
1 b4 0
2 a5 0
3 a6 0
4 Rb8 0
5 b6 0
6 Kh7 0
7 Kg7 0
8 e6 0
9 Nf6 0
10 Bg7 0
11 Bh6 0
12 d6 0
13 d5 0
14 Nh6 0