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

Book: ∞ / 0

# move proof disproof
1 b6 0
2 f5 0
3 a5 0
4 Nh6 0
5 Kd8 0
6 d5 0
7 d6 0
8 f6 0
9 e5 0
10 Nf6 0
11 a6 0
12 Nc6 0
13 Na6 0
14 Bh6 0
15 e6 0
16 Bg7 0