40 Nd7-b6 blocks Black b2-rook from protecting b8-promotion sq Karjakin vs Navara, 2009  (C10) French, 40 moves, 1-0 44 .. Na2-c1 blocks e1-rook from protecting b1-promotion square M Roiz vs Avrukh, 2008  (A04) Reti Opening, 43 moves, 0-1 32 Bg2-d5!,33Re1-e5! block line of life-giving force to d4-rook Anand vs Adams, 1994  (B04) Alekhine's Defense, Modern, 39 moves, 1-0 46 Bc3-b4!! forces .. c6-c5, blocking e3-bishop from b6-sq @ c5 Shirov vs A Volokitin, 2009  (C67) Ruy Lopez, 46 moves, 1-0 16 b5-b6! cuts off line from Black d8-queen to loose a5-knight Portisch vs Tal, 1967  (E62) King's Indian, Fianchetto, 24 moves, 1-0 18 ... Be2-d1! 0-1 shuts out d1-queen, forcing a back rank mate V Shvydenko vs Levertov, 1963  (C58) Two Knights, 18 moves, 0-1 29 Be6-d7! 1-0 shuts out Black d8-rook from protecting d-passer Carlsen vs Anand, 2013  (E46) Nimzo-Indian, 29 moves, 1-0 20 Rd1-d7!! blocks guard line from c8-queen defender to e6-rook A Stefanova vs N Khurtsidze, 2012  (A46) Queen's Pawn Game, 23 moves, 1-0 8 games