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

Book: ∞ / 0

# move proof disproof
1 b6 0
2 g5 0
3 f5 0
4 Kd8 0
5 Rg8 0
6 f6 0
7 g6 0
8 a6 0
9 Nf6 0
10 Nc6 0
11 Na6 0
12 e6 0
13 a5 0
14 e5 0
15 Ng5 0
16 d5 0
17 d6 0