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

Book: ∞ / 0

# move proof disproof
1 b3 0
2 f5 0
3 g4 0
4 Kd6 0
5 Bb7 0
6 Bh6 0
7 Ke6 0
8 Nc6 0
9 f6 0
10 Kc6 0
11 Kc7 0
12 Kd8 0
13 Ke8 0
14 Ra7 0
15 Ra6 0
16 Ba6 0
17 Na6 0
18 e6 0
19 Rg8 0
20 e5 0
21 Bg7 0
22 Nf6 0