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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 e4 0
3 c6 0
4 Ke6 0
5 f5 0
6 c5 0
7 a6 0
8 a5 0
9 Ba6 0
10 Na6 0
11 Nc6 0
12 Kc6 0
13 Kd6 0
14 Ke7 0
15 Kd8 0
16 Ke8 0
17 Bb7 0