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 d6 0
4 Nf6 0
5 Kd8 0
6 f6 0
7 b5 0
8 b6 0
9 g6 0
10 g5 0
11 a5 0
12 a6 0
13 Na6 0
14 Nc6 0
15 Nh6 0
16 e5 0
17 e6 0