Bengaluru, April 2 -- Four rounds into the Candidates, a 20-year-old has cruised into sole lead, a full point ahead of the rest of the field. A day after defeating R Praggnanandhaa with the Black pieces, Uzbekistan's Javokhir Sindarov crushed world No 3 Fabiano Caruana. He out-prepared and out-played Caruana, which isn't easy, and now has three wins from four rounds. While Praggnanandhaa may not have minded a quiet 37-move draw against Matthias Bluebaum after a bruising loss to Sindarov in Round 3, the tournament heads into its first rest day on Thursday. For Bluebaum, it's a fourth draw in as many rounds. Both he and Praggnanandhaa are now at two points. Sindarov has shown great tenacity, consistency and preparation and is easily the most impressive player of the tournament so far. He broke into a boyish grin when asked about his rampaging form. "I never imagined I'll go into the rest day with a plus three score. I played really well and my preparation was also fantastic, thanks to my team of seconds. Preparing against Fabi is a big problem because he knows all the lines and can play any move. So, to out-prepare him feels really, really good. Actually, ten minutes before the game I repeated this line and it ended up happening in the game," he told Chess.com. Playing White, Caruana chose the Queen's pawn opening and the Queen's Gambit Accepted set-up was soon on the board. Out-prepared by the youngster, Caruana began to fall dangerously behind on the clock, leaving him with only six minutes for 20 moves at one point. Caruana using up almost all his time early caused Sindarov to rethink his plans. "At some point today, I thought I'll play solid and not push too much," Sindarov said, "but when he began to think too much I thought 'OK I'll do something'. And it worked." For 33-year-old Caruana, now playing his sixth Candidates and almost synonymous with the event itself, this is a World Championship shot he cannot afford to squander. He won the Candidates eight years ago and went on to face Magnus Carlsen in the title match. He lost after a close, fierce battle which went into tiebreaks. The landscape of chess, however, is vastly different today. Carlsen has stepped away from the World Championship cycle, and a wave of young firebrand players has arrived, unleashing fearless, disruptive chess. One among those young, ambitious players is Sindarov. It's the thing Praggnanandhaa is chasing too. He still has some catching up to do on the standings first. On Wednesday, playing with White, Bluebaum opened with the Queen's pawn opening and the Indian responded by closing his eyes to meditate for a quick minute before picking the Semi-Slav. He attempted to stir things with a center break but couldn't drum up enough play to keep things interesting....