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

Book: ∞ / 0

# move proof disproof
1 Bb7 0
2 Kc6 0
3 g5 0
4 Kc7 0
5 Kd6 0
6 Ke6 0
7 Na6 0
8 a6 0
9 Nc6 0
10 Ke8 0
11 Kd8 0
12 Ke7 0
13 a5 0
14 Ba6 0