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

Book: ∞ / 0

# move proof disproof
1 Rb8 0
2 Nh6 0
3 Nb6 0
4 f5 0
5 Bg7 0
6 a5 0
7 Bb7 0
8 e5 0
9 e6 0
10 Ne5 0
11 h6 0
12 Ba6 0
13 a6 0
14 Ngf6 0
15 h5 0
16 Bh6 0
17 Nb8 0
18 f6 0
19 g5 0
20 Ndf6 0