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 e4 0
4 Kc6 0
5 Kd6 0
6 Ke7 0
7 Kd8 0
8 Ke8 0
9 Bb7 0
10 a5 0
11 Ke6 0
12 Na6 0
13 Nc6 0
14 c5 0
15 Ba6 0