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

Book: ∞ / 0

# move proof disproof
1 h4 0
2 Rh6 0
3 f5 0
4 d5 0
5 f6 0
6 e6 0
7 Nf6 0
8 Na6 0
9 Nc6 0
10 Bh6 0
11 e5 0
12 a6 0
13 Nh6 0
14 Kd8 0
15 Rh7 0
16 d6 0
17 a5 0
18 Bg7 0