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

Book: ∞ / 0

# move proof disproof
1 a6 0
2 f6 0
3 f5 0
4 c5 0
5 Kd7 0
6 Kd8 0
7 e5 0
8 Bg7 0
9 h5 0
10 Nd7 0
11 Na6 0
12 e6 0