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

Book: ∞ / 0

# move proof disproof
1 f5 0
2 Rb8 0
3 e5 0
4 Bb7 0
5 Ne5 0
6 Nb6 0
7 a5 0
8 a6 0
9 Ndf6 0
10 Ngf6 0
11 Bh6 0
12 Nb8 0
13 Ba6 0
14 Bg7 0
15 h6 0
16 Nh6 0
17 Kd8 0
18 h5 0
19 f6 0
20 e6 0