Playing black, Ponomariov beat Loek Van Wely, while, with white, Grischuk got the better of American Gata Kamsky at the World Chess Cup.
The Indian GM is now only 0.5 points behind the combined leader Alexander Morozevich at Amber chess
The Indian ace settled for a quick draw with Grandmaster Gabrielo Sargissian in the ninth and final round of the Reykjavik International chess tournament.
GM Tania Sachdev emerged amongst 10-leaders with a finely crafted victory over Atousa Pourkashiyan of Iran
Surya Shekhar Ganguly failed to finish among the prizes by a whisker, going down to Vladimir Akopian in the final round of Gibtele.com Masters chess tournament.
World junior champion Kiril Georgiev of Bulgaria beat second seed Vladimir Akopian of Armenia to remain in the Gibtele.com Masters chess tournament.
P Harikrishna drew with GM Shakhriyar Mamedyarov of Azerbaijan in the first game for the third place match
A summary of sports events and sports persons, who made news on Wednesday.
Parimarjan Negi was beaten by second seed Valerij Neverov of Ukraine in the sixth round of the Masters section of Hastings International Chess Congress.
The 12-year-old Indian ace held Grandmaster Milos Pavlovic of Serbia to a draw in the fifth round of the Hastings International Chess Congress.
Israeli Grandmaster Boris Gelfand beat Russian Grandmaster Alexander Grischuk in the first game of the quarter-finals in the World Chess Cup.
The Indian ace gained 11 points to breach the landmark but missed the top rank by just one point.
The only Indian remaining in the World Cup Chess was beaten in the Round 3 tie-break.
The Indian GM marched his way in to the second round of the World Chess Cup with a sweeping 2-0 win over Yu Shaoteng of China
IM Elisabeth Paehtz of Germany and GM Shakhriyar Mamedyarov of Azerbaijan won the girls' and boys' title respectively at the World Junior Chess.
D Harika drew with Gu Xiaobing of China in the 11th round of the World Junior Chess Championship
The Indian Woman Grandmaster is joint-fifth after the seventh round in the World Junior girls' chess championship.
Hungarian Zoltan Almasi won the Marx Gyrogy memorial tournament, while Viktor Korchnoi finished second.
The Indian GM could only salvage a draw with Jonny Hector of in the sixth round of the Sigeman & Co. chess tournament
The Indian Grandmaster was beaten by World champion Ruslan Ponomariov at the Biel chess festival.
The 15-year old made sure of his third and final International Master norm after a quick draw with compatriot and Grandmaster Abhijit Kunte in the eighth and penultimate round of the Dubai Open.
The World Junior Champion retained his half point lead over Alexander Motylev in the 10th round of the Grandmasters chess tournament.
With his seventh win in nine games, Harikrishna retained his slender half a point lead over Alexander Motylev of Russia
After six rounds, the Woman Grandmaster has four points from six games and looks good for a medal at the World Junior Chess championships.
After drawing with Wang Yue of China, India's world junior champ beat Tigran Petrosian of Armenia to keep the lead in the Sanjin Hotel Cup Grandmasters tournament.
GM Smirnov Pavel tallied 7.5 points out of a possible 9, the same as Short, but won the overall title on better progressive scores.
The World junior champion beat GM Wang Hao to stretch his lead by 1.5 points at the end of the 5th round in the Sanjin Hotel Cup Grandmasters tournament.
A summary of sports events and persons who made news on Thursday
P Harikrishna started off with a facile victory over Grandmaster Zhang Pengxiang of China in the first round
The Indian GM salvaged a disappointing campaign with a victory in the last round, while Israel's Emil Sutovsky was crowned the winner.
GM Krishnan Sasikiran scored a much-awaited victory against GM Tomasz Markowski of Poland in the fourth round.
Grandmaster Krishnan Sasikiran was held to a draw by Zoltan Almasi of Hungary in the third round.
He drew his 14th round game against Peter Svidler of Russia.
The Indian Grandmaster beat veteran GM Pia Cramling of Sweden in the seventh round of the master's section of Gibtele.com chess festival in Gibraltar.
The International Master drew with Grandmaster Hua Ni of China to take his tally to 3.5 points in the fifth Asian Chess championship.
The Indian scored a sensational victory over Grandmaster Zurab Sturua of Georgia in the fifth round of the Dubai International Chess Championship.
Liviu-Dieter Nisipeanu of Romania and World champion Rustam Kasimdzhanov of Uzbekistan lead the field in the category-16 Super Grandmasters Pune chess festival.
"I practice chess based on what I think is a priority, and what I feel like doing. I also read some chess books -- 'Saying No to Chess Principles' by Evgeny Bareev and 'Life and Games of Mikhail Tal"
The 18-year-old Indian drew with top seeded Grandmaster Ferenc Berkes of Hungary in the final round to emerge champion.
GM Abhijit Kunte suffered a defeat at the hands of Zhang Zhong at Dubai International Chess championship.