On what turned out to be a mixed day for the Indian boys, Gujrathi was at his technical best to squeeze out a victory with black pieces.
The middle game arising out of a Taimanov Sicilian was about equal and Gujrathi reached a queen and minor piece endgame where he began perfect deployment of forces to win a pawn.
Kanarek went looking for counterplay but ended up losing his queen in a tactical melee. Grover fell short of time when he needed it the most in another Sicilian Taimanov of the day.
The result was a draw after Grover suffered some material deficit.
S P Sethuraman could not match the guile of defending champion Alexander Ipatov of Turkey and lost from a position of strength.
It was a promising middle game for the Indian out of a Queen's gambit declined but Ipatov stayed focused to pose problems for white. As it happened, Sethuraman missed the thread of the position and lost a piece and it was soon all over.
Yu Yangyi of China shares the lead with Ipatov on seven points and these two are now a point clear of nearest rivals, Grover, Gujrathi, Idani, Kovalev and Jorge Cori of Peru who drew with Yangyi in the eighth round.
In the girls' championship being held simultaneously, Padmini Rout showcased her attacking skills to outwit erstwhile leader Aulia Warda Media of Indonesia. It was a French Winawer by Padmini as white that led to complexities favouring her.
