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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 a5 0
3 Ba6 0
4 Ke6 0
5 h5 0
6 Bh6 0
7 Nh6 0
8 Bf8 0
9 h6 0
10 Bb7 0
11 Na6 0
12 Nc6 0
13 c5 0
14 Kd6 0
15 a6 0
16 c6 0
17 f6 0
18 Ne7 0
19 Bf6 0
20 Kc6 0
21 Ke7 0
22 Kd8 0
23 Ke8 0
24 Nf6 0