The Grünfeld Defense: Gives white the center in the opening but black's play has a way of destabilizing white's center control, using ideas derived from hypermodern theory which consider a center made of pawns to be weak and aims to attack it with minor pieces from the sides. In today's instructional game black suffers from the departure of his fianchettoed bishop after accepting whites rook sacrifice. From Arizona to the World .... our free chess instructional and training videos are sure to elevate your game. Our free chess videos are an extension of the Metro Phoenix Chess Club in Phoenix, Arizona. Our coach and presenter today is D-MAN. Enjoy and happy chess playing everyone. Metro Phoenix Chess offers local and long distance chess lessons.