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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 Na6 0
3 Nc6 0
4 a5 0
5 Nf6 0
6 d5 0
7 h5 0
8 e5 0
9 e6 0
10 a6 0
11 f5 0
12 Bg7 0
13 b6 0
14 Rh7 0
15 Kd8 0
16 d6 0