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

Book: ∞ / 0

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