The Chess World Cup 2021 was a 206-player single-elimination chess tournament that took place in Sochi, Russia, beginning 12 July and ending 6 August 2021. It was the 9th edition of the Chess World Cup. The winner of this tournament was the Polish grandmaster Jan-Krzysztof Duda, who won without losing any games either in classical chess or in the rapid tiebreakers.
The two finalists (Duda and Sergey Karjakin) qualified for the Candidates Tournament 2022. The rest of the final eight, except Magnus Carlsen, qualified for the FIDE Grand Prix 2022.
In parallel with this open tournament, an inaugural women-only version was held.
The tournament was an 8-round knockout event, with the top 50 seeds given a bye directly into the second round. The losers of the two semi-finals played a match for third place.
The two finalists, Jan-Krzysztof Duda and Sergey Karjakin qualified for the Candidates Tournament 2022, which is a tournament to decide the next challenger for the World Championship. Moreover, all quarter-finalists, except for World Champion Magnus Carlsen, qualified for the FIDE Grand Prix 2022, giving them another chance to qualify for the Candidates.
Each round consisted of classical time limit games on the first two days, plus tie-breaks on the third day if required. The time limits were as follows:
Each round lasted three days: two for classical time limit games and a third, if necessary, for tie-breaks. Rounds 1 to 3 ran from 12 to 20 July; 21 July was a rest day; Rounds 4 to 6 ran from 22 to 30 July; 31 July was a rest day; and the last two rounds ran from 1 to 6 August.
Play began at 3:00pm local time (12:00 UTC) on all days.
The total prize fund was US$1,892,500, with the first prize of US$110,000.
IM Eric Rosen was one of the official photographers for the event.
The following is the list of participants. Players were seeded by their FIDE rating of June 2021, and all players were grandmasters unless indicated otherwise.
, 2847 (World Champion) , 2820 (R) , 2781 (R) , 2780 (R) , 2776 (R) , 2770 (R) , 2760 (WC) , 2759 (R) , 2758 (R) , 2757 (R) , 2730 (R) , 2729 (ER) , 2726 (R) , 2724 (ER) , 2724 (ER) , 2716 (E) , 2714 (ER) , 2714 (ER) , 2710 (ER) , 2709 (Z2.1) , 2706 (E) , 2705 (WC) , 2704 (E) , 2703 (AF) , 2701 (R) , 2699 (ER) , 2699 (ER) , 2698 (AS) , 2697 (ER) , 2696 (E) , 2691 (Z2.1) , 2688 (E) , 2687 (ER) , 2687 (R) , 2684 (R) , 2683 (E) , 2683 (R) , 2682 (R) , 2682 (FN) , 2680 (FN) , 2678 (FN) , 2675 (R) , 2673 (FN) , 2673 (E) , 2670 (FN) , 2669 (FN) , 2667 (E) , 2666 (R) , 2665 (PN) , 2662 (FN) , 2661 (E) , 2660 (FN) , 2660 (Z2.1) , 2656 (E) , 2654 (E) , 2653 (FN) , 2652 (Z2.4) , 2649 (Z2.1) , 2648 (E) , 2645 (FN) , 2641 (Z3.7) , 2640 (PN) , 2639 (E) , 2639 (FN) , 2638 (Z2.2) , 2637 (FN) , 2637 (PN) , 2634 (Z3.4) , 2630 (FN) , 2630 (E) , 2629 (PN) , 2629 (AM) , 2627 (E) , 2627 (E) , 2625 (AF) , 2624 (FN) , 2622 (Z2.5) , 2620 (PN) , 2620 (FN) , 2618 (E) , 2617 (FN) , 2615 (E) , 2614 (E) , 2614 (PN) , 2614 (FN) , 2613 (AS) , 2609 (E) , 2608 (E) , 2608 (FN) , 2608 (PN) , 2607 (E) , 2606 (AM) , 2606 (FN) , 2606 (Z2.1) , 2606 (E) , 2605 (E) , 2603 (FN) , 2603 (E) , 2599 (AM) , 2598 (Z3.4) , 2594 (FN) , 2592 (E) , 2591 (E) , 2591 (FN) , 2590 (E) , 2589 (FN) , 2586 (PN) , 2581 (FN) , 2581 (FN) , 2581 (FN) , 2579 (FN) , 2578 (PN) , 2577 (E) , 2573 (Z2.3) , 2569 (E) , 2569 (FN) , 2568 (FN) , 2565 (FN) , 2564 (E) , 2564 (FN) , 2558 (AS) , 2555 (AM) , 2554 (AM) , 2554 (Z2.5) , 2553 (E) , 2552 (FN) , 2550 (FN) , 2548 (E) , 2548 (FN) , 2547 (Z3.1) , 2546 (FN) , 2542 (E) , 2542 (FN) , 2540 (FN) , 2539 (Z1.10) , 2538 (AM) , 2534 (FN) , 2530 (AS) , 2527 (AM) , 2527 (FN) , 2523 (PN) , 2522 (Z2.4) , 2521 (FN) , 2518 (E) , 2514 (E) , 2514 (FN) , 2514 (AM) , 2508 (FN) , 2506 (IAS) , 2504 (FN) , 2502 (FN) , 2499 (FN) , 2493 (FN) , 2492 (FN) , 2490 (Z2.3) , 2488 (FN) , 2487 (FN) , 2486 (ON) , 2485 (PN) , 2485 (FN) , 2485 (AF) , 2484 (FN) , 2482 (AS) , 2480 (FN) , 2478 (FN) , 2469 (FN) , 2462 (FN) , 2460 (ON) , 2440 (FN) , 2438 (FN) , 2435 (FN) , 2434 (Z3.2) , 2430 (FN) , 2425 (FN) , 2420 (FN) , 2419 (AS) , 2417 (FN) , 2411 (FN) , 2409 (FN) , 2404 (FN) , 2403 (FN) , 2397 (AF) , 2396 (FN) , 2390 (FN) , 2382 (FN) , 2379 (FN) , 2367 (FN) , 2365 (FN) , 2356 (AS) , 2352 (FN) , 2340 (FN) , 2319 (Z3.3) , 2313 (FN) , 2307 (FN) , 2302 (FN) , 2297 (Z3.3) , 2286 (FN) , 2281 (FN) , 2274 (FN) , 2244 (FN) , 2205 (FN) , 2203 (FN) , 2193 (FN) , 2155 (FN) , 2103 (PN) , 1998 (Z3.6)
Players qualifying for the event included:
The participants were seeded by their FIDE rating of June 2021. For the first time, a hybrid format of online chess under arbiter supervision was allowed to be a part of the qualification process, due to the difficulties caused by the COVID-19 pandemic in organizing over the board competition.
The following are the players from the list of qualifiers who declined to play, and their replacements:
In addition, six federations (Bosnia and Herzegovina, China, Japan, South Korea, Peru, Vietnam) did not nominate a player. Because of this and the two Zone 3.5 withdrawals, the number of presidential nominees (PN) increased from four to twelve, with the eight extra being: