Korchnoi's unsupported 39 ... Rc4-c1!! forces h-pawn promotion Averbakh vs Korchnoi, 1965  (A49) King's Indian, Fianchetto without c4, 39 moves, 0-1 28 ... Bg7-d4+! White d2-rook defends d7-rook, e2-tactical base Mamedyarov vs Carlsen, 2007  (A57) Benko Gambit, 58 moves, 0-1 73 ... Rg5-g1! Adams sacs rook to block 8th rank and queen pawn M Ferguson vs Adams, 1997  (C53) Giuoco Piano, 92 moves, 0-1 V Jones vs R Eames, 2010  (B67) Sicilian, Richter-Rauzer Attack, 7...a6 Defense, 8...Bd7, 21 moves, 0-1 4 games