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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 d6 0
3 f6 0
4 Kd8 0
5 b5 0
6 b6 0
7 h5 0
8 Na6 0
9 Nc6 0
10 Bg7 0
11 e6 0
12 e5 0
13 d5 0
14 a6 0