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

Book: ∞ / 0

# move proof disproof
1 Kc6 0
2 Kc7 0
3 Kd8 0
4 Ke8 0
5 f5 0
6 e5 0
7 h5 0
8 e6 0
9 h6 0
10 Ke6 0
11 Na6 0
12 Nh6 0
13 Ba6 0
14 a6 0
15 Nc6 0
16 Kd6 0
17 a5 0
18 c4 0
19 Bb7 0