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

Book: ∞ / 0

# move proof disproof
1 g4 0
2 Nc6 0
3 h4 0
4 a6 0
5 Kd8 0
6 Nh6 0
7 d5 0
8 Bg7 0
9 f6 0
10 f5 0
11 Rh7 0
12 Rh6 0
13 e5 0
14 Na6 0
15 a5 0
16 Nf6 0
17 e6 0
18 d6 0
19 Bh6 0