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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 g5 0
3 d5 0
4 g6 0
5 f5 0
6 Nf6 0
7 h4 0
8 Na6 0
9 Nc6 0
10 Nh6 0
11 a6 0
12 Rh7 0
13 Rh6 0
14 Kd8 0
15 d6 0
16 a5 0
17 e5 0
18 e6 0