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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 Na6 0
3 c4 0
4 e6 0
5 e5 0
6 Nc6 0
7 Bb7 0
8 Kc6 0
9 Kd6 0
10 Kc7 0
11 Kd8 0
12 Ke8 0
13 a5 0
14 Ba6 0
15 Ke6 0