Portisch L vs Benko Gambit Biel 1976
GM Master Class
Portisch,L used a quick double fianchetto with Nh3-f4 against Geller’s Benko gambit in the Biel 1976 Interzonal and won a tough game.
Portisch,Lajos (2625) – Geller,Efim P (2620)
Benko g3 Fast b3[A58]
Biel Interzonal Biel (3), 13.07.1976
Black had earlier sacrificed the exchange for counterplay and now white is playing to convert the material advantage. What do you suggest for white?
White to Play