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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 h5 0
3 g6 0
4 h6 0
5 f6 0
6 Nh6 0
7 Ke7 0
8 Ne7 0
9 Kd8 0
10 Kf8 0
11 g5 0
12 d6 0
13 c5 0
14 e4 0
15 a5 0
16 Nf6 0
17 Bb7 0
18 d5 0