Media Summary: GM Johan Hellsten presents a test to the U.S. Chess School of some Tigran Petrosian vs Boris Gulko. URS Championship Yerevan (Armenia) 1975.
Study 114 Tigran Gorgiev 1929 Solving Harder Studies - Detailed Analysis & Overview
GM Johan Hellsten presents a test to the U.S. Chess School of some Tigran Petrosian vs Boris Gulko. URS Championship Yerevan (Armenia) 1975.