[Event "match-tournament"] [Site "Ch World , Hague/Moscow (Neth"] [Round "0"] [White "Botvinnik"] [Black "Keres"] [Result "1-0"] [FEN "rq4k1/pp1nrppp/4bn2/6R1/3QP3/P4PN1/4B1PP/2B2RK1 w - - 0 21"] {A slightly more complicated Rook sacrifice at g7} 21. Rxg7+ Kxg7 22. Nh5+ Kg6 (22... Kg8 23. Nxf6+ Nxf6 24. Qxf6 -- 25. Bh6) 23. Qe3 { The devastating final point Weak dark square tactic} 1-0