Ruy Lopez, Closed, Breyer Defense
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In chess, C94 is the ECO code for the Ruy Lopez, Closed, Breyer Defense chess opening. The game begins 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 Nb8. Boris Spassky popularized this opening with back-to-back wins over Mikhail Tal in Tbilisi, 1965 and has a career plus score with it. Black manages to control the center by redirecting pieces and freeing up the c-pawn. White has time to attack the kingside or even the queenside. The Breyer is examined in two ECO classifications. In C94, White aims for shoring up the center with 10.d3 and in C95, White plays a more open game with 10.d4.