gambito de rey Efimov vs Bronstein, 1941  (C34) King's Gambit Accepted, 12 moves, 0-1 peón a dama N Krogius vs Jansa, 1965  (E60) King's Indian Defense, 36 moves, 1-0 35. juegan negras R Bertholee vs J Polgar, 1990  (A35) English, Symmetrical, 43 moves, 0-1 28 black Geller vs P Ostojic, 1969  (B36) Sicilian, Accelerated Fianchetto, 28 moves, 0-1 35 black to play E Piankov vs Psakhis, 1977  (A64) Benoni, Fianchetto, 11...Re8, 35 moves, 0-1 29. black to play E Schallopp vs Blackburne, 1886  (C29) Vienna Gambit, 29 moves, 0-1 6 games