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

Book: ∞ / 0

# move proof disproof
1 b4 0
2 Nf6 0
3 f5 0
4 d5 0
5 g5 0
6 f6 0
7 Rh7 0
8 d6 0
9 Kd8 0
10 Bg7 0
11 e5 0
12 e6 0
13 h5 0