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 Nd7 0
4 e5 0
5 e6 0
6 Bg7 0
7 f5 0
8 d5 0
9 h5 0
10 Nc6 0
11 Nf6 0
12 Na6 0