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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 g4 0
3 b4 0
4 Bb7 0
5 Nh6 0
6 Ke6 0
7 Nc6 0
8 f6 0
9 Bg7 0
10 Ba6 0
11 Nf6 0
12 Na6 0
13 a6 0
14 a5 0
15 e6 0
16 Kd6 0
17 e5 0
18 Kc6 0
19 Kd8 0
20 Ke8 0
21 Kc7 0
22 Bh6 0