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

Book: ∞ / 0

# move proof disproof
1 Bb7 0
2 Kd8 0
3 Kc7 0
4 Ke8 0
5 a5 0
6 Ba6 0
7 Kd6 0
8 Kc6 0
9 a6 0
10 Bh6 0
11 Na6 0
12 Nc6 0
13 Bg7 0
14 Nh6 0
15 Nf6 0
16 e5 0
17 Ke6 0
18 e6 0