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

Book: ∞ / 0

# move proof disproof
1 Kd6 0
2 c6 0
3 a5 0
4 c5 0
5 Kc6 0
6 a6 0
7 Bb7 0
8 Kd8 0
9 Nc6 0
10 Na6 0
11 Ke6 0
12 Ba6 0
13 Ke8 0
14 Ke7 0