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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 Na6 0
3 Nd7 0
4 Nc6 0
5 a5 0
6 Bg7 0
7 h5 0
8 c5 0
9 f5 0
10 a6 0
11 c6 0
12 Be7 0
13 d5 0