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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Kc8 0
3 Ke8 0
4 Ke6 0
5 Rb8 0
6 Rd8 0
7 a5 0
8 Bg7 0
9 Nh6 0
10 Re8 0
11 Rc8 0
12 c5 0
13 e6 0
14 Kc7 0
15 Kd8 0
16 Nf6 0
17 f6 0
18 f5 0
19 Kd6 0
20 Bh6 0