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

Book: ∞ / 0

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