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

Book: ∞ / 0

# move proof disproof
1 d5 0
2 f5 0
3 Bg7 0
4 Na6 0
5 Nc6 0
6 e5 0
7 a6 0
8 b6 0
9 Kd8 0
10 e6 0
11 g5 0
12 d6 0
13 Nf6 0
14 f6 0
15 Nh6 0
16 a5 0
17 Bh6 0