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

Book: ∞ / 0

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