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

Book: ∞ / 0

# move proof disproof
1 Ke6 0
2 b4 0
3 g4 0
4 Kg6 0
5 a6 0
6 b6 0
7 Rb8 0
8 Kf6 0
9 Ke8 0
10 a5 0
11 Kg7 0
12 Bh6 0
13 Rc8 0
14 e5 0
15 e6 0
16 Re8 0
17 Nh6 0
18 Bg7 0
19 Rd8 0
20 Nf6 0