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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 h5 0
3 Kc6 0
4 Na6 0
5 Nc6 0
6 Bf6 0
7 Kd6 0
8 Nh6 0
9 Ba6 0
10 Kd8 0
11 h6 0
12 Bh6 0
13 c5 0
14 Bb7 0
15 Ne7 0
16 e4 0
17 Nf6 0
18 Ke6 0
19 Ke7 0
20 c6 0
21 a6 0
22 Bf8 0
23 Ke8 0