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

Book: ∞ / 0

# move proof disproof
1 c5 0
2 Kf5 0
3 Nc6 0
4 Na6 0
5 c6 0
6 a5 0
7 Kd5 0
8 Ba4 0
9 f5 0
10 f6 0
11 Ke7 0
12 Kf6 0
13 Kd6 0
14 Bc8 0
15 a6 0
16 e4 0
17 Be8 0
18 Bb5 0
19 Bc6 0