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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 Nf6 0
3 Kd5 0
4 Na6 0
5 Nd7 0
6 f5 0
7 Bb7 0
8 Rg8 0
9 g4 0
10 Kf5 0
11 Ba6 0
12 a6 0
13 c5 0
14 Ke5 0
15 Kf6 0
16 Kd6 0
17 Bg7 0
18 a5 0
19 Bh6 0
20 Kd7 0
21 Bd7 0