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

Book: ∞ / 0

# move proof disproof
1 Kd6 0
2 Ba6 0
3 a6 0
4 c5 0
5 Ke6 0
6 Ke8 0
7 Kd8 0
8 Ke7 0
9 Kc7 0
10 Na6 0
11 a5 0
12 Bb7 0