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

Book: ∞ / 0

# move proof disproof
1 f6 0
2 f5 0
3 e6 0
4 a6 0
5 Rh7 0
6 a5 0
7 Ba6 0
8 Bb7 0
9 Nf6 0
10 h5 0
11 d5 0
12 d6 0
13 e5 0
14 Kc7 0
15 Ke8 0
16 Bg7 0
17 Nc6 0
18 Na6 0