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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Ba6 0
3 Bb7 0
4 Kd6 0
5 Bg7 0
6 Bd7 0
7 a5 0
8 Nd7 0
9 Na6 0
10 Kf5 0
11 Ke5 0
12 Kd5 0
13 Nc6 0
14 Nf6 0
15 Kd7 0
16 f6 0
17 f5 0
18 g4 0
19 Kf6 0
20 Bh6 0
21 Nh6 0