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 Kc7 0
6 Ke8 0
7 f6 0
8 b5 0
9 b6 0
10 g6 0
11 g5 0
12 a5 0
13 a6 0
14 Na6 0
15 Nc6 0
16 Nh6 0
17 e5 0
18 e6 0