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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 c5 0
3 Nc6 0
4 Na6 0
5 a6 0
6 Kd5 0
7 Ba6 0
8 Ke7 0
9 Kd7 0
10 Kf6 0
11 Kd6 0
12 Kf5 0
13 Bd7 0
14 Bb7 0
15 Nd7 0
16 f5 0
17 f6 0
18 c6 0
19 e4 0