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 Bb7 0
4 a6 0
5 Nc6 0
6 Na6 0
7 a5 0
8 f6 0
9 Nf6 0
10 Ke8 0
11 Kd8 0
12 Kc7 0
13 Kc6 0
14 Ba6 0
15 e6 0
16 c4 0
17 Kd6 0
18 Nh6 0
19 Bh6 0
20 Bg7 0
21 Ke6 0