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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 c6 0
3 e6 0
4 e5 0
5 Bb7 0
6 Kc6 0
7 Ke6 0
8 Nh6 0
9 g6 0
10 Na6 0
11 g5 0
12 Ba6 0
13 Ke8 0
14 Kd8 0
15 Kd6 0
16 Nc6 0