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

Book: ∞ / 0

# move proof disproof
1 b6 0
2 Bh6 0
3 Nh6 0
4 Nf6 0
5 d5 0
6 a6 0
7 Na6 0
8 b4 0
9 e6 0
10 g4 0
11 Bg7 0
12 e5 0
13 h6 0
14 Nc6 0
15 Kd8 0
16 d6 0
17 Kf7 0