its time for the codes
to unlock the mystery
of the mixed-up knight

e4 e5/Nf3 Nc6/Bb5 Be7 /Nc3 Nf6/O-O d6
d4 Bd7/Bxc6 Bxc6/Qe2 exd4/Nxd4 O-O
Nxc6 bxc6/Rd1