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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Bh6 0
3 f6 0
4 Kd8 0
5 Nh6 0
6 Nf6 0
7 a5 0
8 d6 0
9 a6 0
10 Ba6 0
11 Bb7 0
12 d5 0
13 e6 0
14 Nc6 0
15 Na6 0
16 e5 0
17 Bg7 0