41 QxNc4! Black c7-rook first defender of N, only defender of Q Ivanchuk vs Topalov, 2007  (B90) Sicilian, Najdorf, 41 moves, 1-0 22 Qf2xRf4 Nd4-e2+ White f2-queen only defender of e2-square J Thomason vs Fischer, 1955  (E90) King's Indian, 23 moves, 0-1 19 Qb7xNc6+! Black d7-bishop is first def of c6, only def of e6 Spielmann vs M Walter, 1928  (B10) Caro-Kann, 20 moves, 1-0 13 Nb3xNc5! Black e7-queen first defender of c5, only def of f7 Tal vs Vaganian, 1973  (C04) French, Tarrasch, Guimard Main line, 12 moves, 1-0 41 Ba4xNc6+! Black c8-queen is only defender of loose f8-rook Topalov vs S Zhigalko, 2008  (E15) Queen's Indian, 40 moves, 1-0 31 Rd7xf7! f8-rook first defender of f7, only defender of f7 Aronian vs Ivanchuk, 2008  (A04) Reti Opening, 33 moves, 1-0 37 Qg6-e8+!! Black d8-rook first defdr of e8, only defdr of d5 Fischer vs Benko, 1965  (C95) Ruy Lopez, Closed, Breyer, 37 moves, 1-0 37 Re4xd4! d6-queen first defender of d4, *only* defender of c7 Topalov vs Kamsky, 2009  (C07) French, Tarrasch, 55 moves, 1-0 19 ... h7-h6? Black f7-pawn now 1st defender of g6, 20 Qg5xg6+! O C Moen vs A Livner, 2008  (B48) Sicilian, Taimanov Variation, 24 moves, 1-0 31 .. Nd3xf2! f2-pawn has 3 defenders but first defender pinned Kramnik vs Gelfand, 2010  (E15) Queen's Indian, 34 moves, 0-1 10 games