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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Na6 0
3 Nc6 0
4 f6 0
5 b6 0
6 a5 0
7 a6 0
8 Kd8 0
9 e6 0
10 Bh6 0
11 e5 0
12 d5 0
13 d6 0
14 Bg7 0
15 Nh6 0
16 Nf6 0