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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Nf6 0
3 a5 0
4 f6 0
5 Ke6 0
6 Ke8 0
7 Kd8 0
8 Ke7 0
9 Kd6 0
10 Kc6 0
11 Bf6 0
12 Bh8 0
13 Ne7 0
14 c6 0
15 a6 0
16 c5 0
17 Ba6 0
18 Bb7 0
19 Bf8 0
20 Na6 0
21 Nc6 0
22 Bh6 0
23 Nh6 0