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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Ra7 0
3 Kf8 0
4 c5 0
5 Bb7 0
6 e5 0
7 c6 0
8 Nc5 0
9 Nb6 0
10 a5 0
11 g4 0
12 Ne5 0
13 Nf8 0
14 f6 0
15 e6 0
16 Nf6 0
17 Nb8 0
18 Rb8 0