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

Book: ∞ / 0

# move proof disproof
1 Bd7 0
2 a6 0
3 Bb7 0
4 Nc6 0
5 Nd7 0
6 Na6 0
7 Kf5 0
8 Ke5 0
9 Kd5 0
10 f5 0
11 Kd6 0
12 Kf7 0
13 Ba6 0
14 g6 0
15 g5 0
16 Kd7 0
17 a5 0
18 Nh6 0