29 ... RxBd8 30 RxRd8 KxRd8 Black d8-king cannot stop promotion Anand vs Topalov, 2007  (B90) Sicilian, Najdorf, 29 moves, 1-0 46 RxBg4+! KxRg4 47 d6-d7 Black g4-king cannot defend d7-square Ivanchuk vs Grischuk, 2002  (D34) Queen's Gambit Declined, Tarrasch, 47 moves, 1-0 36 ... Qd4xBd1! rook cannot prevent mate on a4 like d1-bishop J Jackson vs D Okike, 2014  (B56) Sicilian, 37 moves, 0-1 13 - Bh5xf3+! 0-1 f3-bishop cannot interpose on f4 like f3-pawn Dorfman vs Romanishin, 1977  (B06) Robatsch, 13 moves, 0-1 8 Qd1xBd4! Nc6xQd4 d4-knight cannot protect f6 like d4-bishop Muller vs NN, 1928  (A27) English, Three Knights System, 10 moves, 1-0 17 Rf1xf7+! Rf8xRf8 f7-rook cannot protect e6-sq like f7-pawn Kmoch vs L Prins, 1940  (D97) Grunfeld, Russian, 17 moves, 1-0 6 games