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

Book: ∞ / 0

# move proof disproof
1 Nf6 0
2 a5 0
3 Ba6 0
4 Na6 0
5 Kd8 0
6 f6 0
7 a6 0
8 e5 0
9 d6 0
10 d5 0
11 h5 0
12 Nc6 0
13 Bb7 0
14 Rh7 0
15 e6 0
16 f5 0
17 b5 0
18 Bg7 0