Master Class Band 13 - Tigran Petrosian SN_required true Variations covered include the popular

Variations covered include the popular King's Indian Attack

and the record only ended when Lasker had to acknowledge the superiority of Jose Raul Capablanca in 1921

Two preset options for Armageddon matches

\r\nFigurine Notation

As an answer to 1

Master Class Band 13 - Tigran Petrosian SN_required true Variations covered include the popularTigran Petrosian became the 9th world chess champion in history after defeating defending champion Mikhail Botvinnik in a match in 1963. In 1969, he lost the title to Boris Spassky. But even after losing the world championship title, Petrosian remained one of the best players in the world for a long time and took part in the fight for the world championship several times.