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

Book: ∞ / 0

# move proof disproof
1 Kf6 0
2 Kd6 0
3 Bg7 0
4 f5 0
5 Na6 0
6 a6 0
7 Bh6 0
8 g4 0
9 Bb7 0
10 Bd7 0
11 Ba6 0
12 Ke5 0
13 Kd5 0
14 Rg8 0
15 Nc6 0
16 Nf6 0
17 Kf5 0
18 Nd7 0
19 f6 0
20 Kd7 0