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

Book: ∞ / 0

# move proof disproof
1 c6 0
2 Ba6 0
3 a6 0
4 c5 0
5 Kd8 0
6 Kd6 0
7 Nc6 0
8 Ke7 0
9 Na6 0
10 Ke6 0
11 g4 0
12 Bb7 0
13 Kc6 0
14 a5 0
15 Ke8 0