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

Book: ∞ / 0

# move proof disproof
1 Kc6 0
2 Kd6 0
3 Nh7 0
4 a5 0
5 Ke6 0
6 Ke7 0
7 Kc8 0
8 Kd8 0
9 Ke8 0
10 Kc7 0
11 a6 0
12 Ng6 0
13 Ne6 0
14 Na6 0
15 Nc6 0