Grandmaster Arjun Erigaisi of Telangana won the 58th edition of Senior National Chess Championship here on Thursday, edging out fellow GMs of Tamil Nadu D Gukesh and P Iniyan in a tie-breaker after the trio finished on 8.5 points each. Gukesh had to settle for a draw against Aryan Chopra while Iniyan moved up to 8.5 points with a fine win over fellow GM Mitrabha Guha of West Bengal.
