rook vs queen fortress Salov vs Korchnoi, 1997  (E10) Queen's Pawn Game, 81 moves, 1/2-1/2 A beautiful perpetual Portisch vs Kasparov, 1981  (A70) Benoni, Classical with 7.Nf3, 49 moves, 1/2-1/2 from improve book A Bannik vs A V Cherepkov, 1961  (B44) Sicilian, 39 moves, 0-1 improv maybe ct Bagirov vs Machulsky, 1975  (A57) Benko Gambit, 23 moves, 1-0 4 games