Chennai Grandmasters Chess: Nihal Sarin Upsets Arjun Erigaisi, Undefeated Vincent Keymer Extends Lead On Day 4

India's Nihal Sarin notched up his first win at the Chennai Grandmasters chess tournament, stunning compatriot Arjun Erigaisi in Round 4 here on Sunday. Meanwhile, German GM Vincent Keymer continued his unbeaten run, holding Dutch star Anish Giri to a draw to stay a point clear at the top of the standings. Nihal's win over Arjun came after a tense, strategic battle that began with the Reti Opening, with the latter mirroring his compatriot's setup. With chess legend Vishwanathan Anand presiding in the commentary box, providing fans with a unique live experience, the game unfolded at a measured pace as Arjun claimed the first piece on move 15.

A tightly contested middlegame gradually opened up, allowing Nihal to press his advantage and convert on move 70 for his first victory of the 2025 edition.

Elsewhere, GM Murali Karthikeyan also impressed, defeating Jorden van Foreest to climb up the standings.

In other Masters results, GM Vidit Gujrathi and GM Pranav V split the points after a balanced encounter, while the all-American clash between GM Awonder Liang and GM Ray Robson also ended with half-a-point apiece.

Keymer's draw with Giri kept him in the sole lead, while Nihal's victory over Arjun injected fresh intrigue into the title race.

In the Challengers section, GM Abhimanyu Puranik emerged as the sole leader after defeating WGM Vaishali Rameshbabu with the white pieces, capitalising on hitherto joint leader M Pranesh's draw against GM Adhiban Baskaran.

GM Diptayan Ghosh scored a win by beating Harshavardhan GB, while GM Leon Luke Mendonca also stayed in contention with a victory over GM Harika Dronavalli -- both moving level with Pranesh on 3 points.

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