And already Black was on the verge of winning.

The most energetic way, although the preparatory 29.b3 was also good.

29…b3 30.axb3 Rb7 was a better attempt to instigate some counterplay, though after 31.Qd1 Rxb3 32.Rc7 White is clearly better.

Suddenly White has launched an attack on the black king. Soon he will obtain access via the light squares.

And Black resigned.

Targeting the c-pawn twice. The side with the queen has the usual problems defending loose pawns.

28.Nd2 Rg4 29.g3 Bg5.

Even for a rapid game, this is an extremely careless move; 30.Ke1.

celebrate the birthday of Tigran Petrosian, the 9th World Champion, who was born on this day 94 years ago.
He won the World Champion title from Mikhail Botvinnik in 1963 and successfully defended it against Boris Spassky in 1966.
Known as 'Iron Tigran' for his resilient defensive style, Petrosian remains an inspiration to chess players worldwide.