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

Book: ∞ / 0

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