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

Book: ∞ / 0

# move proof disproof
1 c6 0
2 h4 0
3 e4 0
4 a6 0
5 Ke7 0
6 Ke8 0
7 Nc6 0
8 c5 0
9 Kd8 0
10 Na6 0
11 Kd6 0
12 Kc6 0
13 a5 0
14 Ba6 0
15 Bb7 0
16 Ke6 0