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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 e6 0
3 Bh6 0
4 Ke6 0
5 Bb7 0
6 Bg7 0
7 a5 0
8 Na6 0
9 Ba6 0
10 Ke8 0
11 Kd8 0
12 Kc7 0
13 Kd6 0
14 a6 0
15 c5 0
16 e5 0
17 Nh6 0