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

Book: ∞ / 0

# move proof disproof
1 Kc7 0
2 a6 0
3 e6 0
4 Na6 0
5 Nc6 0
6 Kc6 0
7 Bb7 0
8 e5 0
9 Ba6 0
10 Kd6 0
11 g6 0
12 f6 0
13 Nh6 0
14 Ke6 0
15 Kd8 0
16 Ke8 0
17 g5 0
18 a5 0
19 Nf6 0
20 f5 0