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

Book: ∞ / 0

# move proof disproof
1 Ke6 0
2 a6 0
3 Kg5 0
4 Kg6 0
5 c6 0
6 c5 0
7 Ke5 0
8 Kf5 0
9 Na6 0
10 Nd7 0
11 g5 0
12 a5 0
13 g6 0
14 e6 0
15 e5 0
16 Kf7 0
17 Nh6 0
18 Nc6 0