Ruy López Opening: Morphy Defense, Keres, Flohr-Zaitsev System

1.e4 e5 2.Nf3 Nc6 3.Bb5 a6 4.Ba4 Nf6 5.O-O Be7 6.Re1 b5 7.Bb3 O-O 8.c3 d6 9.h3 Bb7 10.d4 Re8 11.Nbd2 Bf8 12.d5 Nb8