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 f6 0
4 Bb7 0
5 c5 0
6 Ke6 0
7 e6 0
8 Na6 0
9 Ba6 0
10 Kd6 0
11 Kc7 0
12 Kd8 0
13 Ke8 0