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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 Bh6 0
3 e5 0
4 Rg8 0
5 a5 0
6 Bb7 0
7 Nf6 0
8 Ke6 0
9 a6 0
10 Bg7 0
11 g4 0
12 c5 0
13 e6 0
14 Na6 0
15 Kd6 0
16 Kc7 0
17 Kd8 0
18 Ke8 0
19 f5 0
20 Ba6 0