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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Qg5 0
3 Qh4 0
4 f5 0
5 Qf6 0
6 g6 0
7 h5 0
8 Nc6 0
9 Qe7 0
10 c5 0
11 Nf6 0
12 Ne7 0
13 Ke7 0
14 Kf8 0
15 g5 0
16 d5 0
17 Bb7 0
18 Nh6 0
19 e4 0
20 c6 0
21 f6 0
22 h6 0
23 d6 0