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

Book: ∞ / 0

# move proof disproof
1 Ke7 0
2 f6 0
3 Ra7 0
4 c5 0
5 Nd7 0
6 Bb7 0
7 a5 0
8 f5 0
9 Kd6 0
10 Kd7 0
11 Bd7 0
12 Kf6 0
13 Ke5 0
14 Kf5 0
15 Kd5 0