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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 f6 0
3 Nh6 0
4 Ke6 0
5 Bg7 0
6 Bh6 0
7 Kd6 0
8 Kc7 0
9 Kd8 0
10 Ke8 0
11 Na6 0
12 a5 0
13 a6 0
14 Ba6 0
15 e5 0
16 Bb7 0
17 Nf6 0
18 c5 0
19 e6 0