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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Kd6 0
3 Nc6 0
4 Ke6 0
5 a6 0
6 c6 0
7 Qe8 0
8 a5 0
9 Kc6 0
10 Ke8 0
11 Na6 0
12 e6 0
13 Ba6 0
14 Qf8 0
15 Nh6 0
16 e5 0
17 c5 0
18 Bb7 0