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

Book: ∞ / 0

# move proof disproof
1 Nb8 0
2 a6 0
3 Bb7 0
4 Ne5 0
5 Nb6 0
6 Ba6 0
7 Nf8 0
8 c5 0
9 a5 0
10 Rb8 0
11 e5 0
12 Nf6 0
13 Nc5 0