P. Harikrishna and B. Adhiban won nerve-wracking tie-breakers, to join Viswanathan Anand, Vidit Gujrathi and S.P. Sethuraman in the second round of chess World Cup here on Tuesday.
However, Karthikeyan Murali, who was also tied 1-1 after his games in classical time control, lost in the tie-breaker.
The day also saw reigning champion Sergey Karjakin of Russia winning his tie-breaker against 16-year-old Anton Smirnov of Australia, the youngest participant in the tournament.
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Most of the other strong contenders, including top seed and World champion Magnus Carlsen of Norway, had entered the second round on Monday.
Important results (Indians unless specified): First round: Sergey Karjakin (Rus) bt Anton Smirnov (Aus) 3-1; P. Harikrishna bt Yuri Gonzalez Vidal (Cub) 3.5-2.5; Francisco Vallejo Pons (Spa) bt Karthikeyan Murali; 2.5-1.5; B. Adhiban bt Nguyen Ngoc Truong Son (Vie) 3.5-2.5 .