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

Book: ∞ / 0

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