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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 e5 0
3 Rg8 0
4 Nf6 0
5 Kc7 0
6 Ba6 0
7 Bg7 0
8 Bb7 0
9 a6 0
10 a5 0
11 f6 0
12 Kd6 0
13 Nc6 0
14 Ke6 0
15 e6 0
16 Ke8 0
17 Kd8 0
18 Kc6 0
19 Na6 0
20 Bh6 0