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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Qe7 0
3 Rb8 0
4 Ba6 0
5 Qc7 0
6 Nb6 0
7 Qb6 0
8 a6 0
9 Ke7 0
10 Kf8 0
11 a5 0
12 Nb8 0
13 Nf8 0
14 Bb7 0
15 Ne5 0
16 Qa5 0