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

Book: ∞ / 0

# move proof disproof
1 a5 0
2 Kc6 0
3 Kd6 0
4 Kc7 0
5 Kd8 0
6 Ke8 0
7 g5 0
8 h6 0
9 Nh6 0
10 e6 0
11 Ke6 0
12 Ra7 0
13 e5 0
14 Bb7 0
15 Bg7 0
16 Bh6 0
17 Nc6 0
18 Nf6 0
19 h5 0