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

Book: ∞ / 0

# move proof disproof
1 g5 0
2 a5 0
3 Ke8 0
4 Nf6 0
5 f5 0
6 Kc6 0
7 Ke6 0
8 Nh6 0
9 c6 0
10 Bb7 0
11 c5 0
12 h6 0
13 Qf8 0
14 Nc6 0
15 e6 0
16 f6 0
17 h5 0
18 Ra7 0
19 Qe8 0
20 e5 0
21 Kd6 0