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

Book: ∞ / 0

# move proof disproof
1 g5 0
2 f5 0
3 h5 0
4 e5 0
5 e6 0
6 Na6 0
7 Nc6 0
8 Ba6 0
9 Bg7 0
10 d5 0
11 Nh6 0
12 Bh6 0
13 d6 0
14 a6 0
15 a5 0
16 Bb7 0
17 Nf6 0
18 h6 0
19 Kd8 0
20 f6 0