This is Anand's sixth loss to American in Classical chess and the Indian ace will now have to do a lot of hard work to catch up in the last five rounds.
The defending champion triumphed on better progressive score.
India's Grandmaster Arjun Erigaisi edged out fellow teenager Christopher Yoo in the quarter-finals via tie-breaker to reach the last four round of the Julius Baer Generation Cup online rapid chess tournament on Friday.
Viswanathan Anand's hunt for an elusive win continued as he was held to yet another draw by Shakhriyar Mamedyarov of Azerbaijan in the sixth round of the Altibox Norway Chess tournament, Stavanger, Norway.
The eight-player all-play-all tournament is the American finale of Champions Chess Tour. There is US$7,500 at stake for each match won at the event.
The year 2023 will go down as extremely memorable for the Indian sports fraternity as players across various disciplines came together to script history at the Asian Games held in Hangzhou.
The Chess Players Association of India has alleged irregularities in the AICF's balance sheet.
P T Ummar Koya's said it was impractical to recognise the newly-formed Chess Players Association of India.
The FIDE title is subject to the fulfilment of an 2500 Elo rating.
Grandmaster Vidit Gujrathi won Tata Steel Chess Challengers 2018, at Wijk aan Zee, Netherlands, on Sunday. The victory ensured him qualification for the Tata Steel Masters 2019, where leading chess players from across the world, including World champion Magnus Carlsen, will take part.
On what turned out to be an easy day, Anand had to stretch himself only a little as Karjakin did not attempt any complicated warfare. The result was exchanging of pieces at regular intervals and the players signed peace in an opposite coloured Bishops endgame.
Grandmaster Parimarjan Negi of PSPB clinched the National title after settling for a quick draw against Grandmaster Tejas Bakre in the final round of the REC National Premier Chess Championship in New Delhi on Wednesday.
Viswanathan Anand played out a draw with in-form Ian Nepomniachtchi of Russia and remained in the joint third spot in the 10th edition of Tal memorial chess tournament in Moscow.
World champion Viswanathan Anand got tangled in a complicated position and was held to a draw by little-known Spaniard Francisco Vallejo Pons in the first round of the fifth Chess Masters final in Sao Paulo.
World champion Viswanathan Anand suffered a shocking defeat at the hands of young Fabiano Caruana of Italy in the fourth round of Zurich Chess Challenge in Zurich.
Grandmaster Koneru Humpy, the highest rated player in the fray, crashed out of the World Women's Chess Championship after failing to capitalize on her chances against Natalia Zhukova of Ukraine in the second game of the second round that concluded in Khanty Mansiysk, Russia, on Thursday.
Grandmaster and former Asian champion S P Sethuraman has knocked out former FIDE champion Ruslan Ponomariov of Ukraine in a big first round upset at the Chess World Cup in Tbilisi, Georgia.
Viswanathan Anand replaced Vladimir Kramnik of Russia as champion, when he won the World Chess Championship in Mexico City on Saturday night.
Five-time world champion Viswanathan Anand got off to a good start with an easy draw against World No.2 United States' Fabiano Caruana in the first round of the London Chess Classic, the final leg of the Grand Chess tour.
Liem Le scored an emphatic 2.5-0.5 win over the teenaged Indian GM, securing victories in games two and three after the opener ended in a draw.
Indian Grandmaster S P Sethuraman went down to higher ranked Shakhriayar Mamedyarov of Azerbaijan in the first game of the third round of World Cup of Chess now underway in Baku.
Curtains were drawn on the women challenge at the Chess World Cup with the defeat of Judit Polgar at the hands of top seeded Grandmaster Boris Gelfand of Israel.
India was held to a 3-3 draw by lower-ranked Mongolia in the sixth round as favourites China grabbed the top spot in Pool A in the FIDE Online Chess Olympiad on Saturday.
Having lost to Russian Sergey Karjakin in the previous round, Anand's chances to catch up with Carlsen at the top have now almost evaporated as the reigning world champion is now 1.5 points ahead of the Indian with just two rounds to go in the category-22 event.
Rameshbabu Praggnanandhaa is just 13 years old but the boy is already going places and this was his second win against a 2700 Grandmaster.
Young Indian Grandmaster Rameshbabu Praggnanandhaa went down fighting to World No. 2 Ding Liren in the tie-break of the Meltwater Champions Chess Tour Chessable Masters 2022 online tournament final on Friday.
Having done all the hard work with spectacular results, Indian players would look to hold their nerves in the final dash to finish at the podium in the World Women Chess Team Championships, in Mardin, Turkey.
Former World champion Viswanathan Anand scored a thumping victory over French Grandmaster Maxime Vachier-Lagrave to jump to joint-second after the end of the sixth round in the Norway Chess tournament, which is a part of the Grand Chess Tour.
Unheralded Vinod Bhagwat beat British Open champion Abhijit Kunte in the third round.
Having won two games in a row with white pieces earlier in the tournament, Carlsen could do little against Anand this time and the Norwegian was not quite happy with his play.
Armenian Levon Aronian has had mixed results with Anand but the Indian has troubled his opponent a great deal in the past few years.
World Champion Viswanthan Anand defeated Francisco Vallejo Pons of Spain in the 10th and final round to avoid a last-place finish at the fourth Final Masters chess tournament in Bilbao.
It was a huge drama on the opening day as World champion Magnus Carlsen of Norway lost on time from a winning position in the longest game of the day.
World champion Viswanathan Anand made a disappointing start as he suffered a shock defeat at the hands of Englishman Michael Adams in the first round of Alekhine Memorial Chess Tournament in Paris at the Louvre.
What he could not achieve during his chess playing days, legendary Garry Kasparov has done now by being included in 'Time 100' list of most influential people for the year 2007.
The fact that Tamil Nadu Chief Minister J Jayalalithaa approved an expenditure of Rs 29 crore for the World Chess Championship between Viswanathan Anand and Norway's Magnus Carlsen to be held here points to the significance the event has for the state government.
Anand has been trying to play very complicated positions and the sixth round was no different.
'There are lots of extremely gifted players. But the technical aspects need to be sorted out,' says Grandmaster Nigel Short.