| Round 4 on 2018/09/27 at 15:00 |
| Bo. | 27 | Vietnam | Rtg | - | 7 | France | Rtg | 1½:2½ | PGN |
| 1.1 | GM | | 2715 | - | GM | | 2780 | ½ - ½ | PGN |
| 1.2 | GM | | 2620 | - | GM | | 2678 | ½ - ½ | PGN |
| 1.3 | GM | | 2491 | - | GM | | 2646 | ½ - ½ | PGN |
| 1.4 | IM | | 2463 | - | GM | | 2629 | 0 - 1 | PGN |
| Bo. | 10 | Israel | Rtg | - | 32 | Sweden | Rtg | 3 : 1 | PGN |
| 2.1 | GM | | 2703 | - | GM | | 2655 | 0 - 1 | PGN |
| 2.2 | GM | | 2674 | - | GM | | 2544 | 1 - 0 | PGN |
| 2.3 | GM | | 2692 | - | GM | | 2520 | 1 - 0 | PGN |
| 2.4 | GM | | 2594 | - | GM | | 2499 | 1 - 0 | PGN |
| Bo. | 1 | United States of America | Rtg | - | 5 | India | Rtg | 2½:1½ | PGN |
| 3.1 | GM | | 2827 | - | GM | | 2771 | 1 - 0 | PGN |
| 3.2 | GM | | 2776 | - | GM | | 2743 | ½ - ½ | PGN |
| 3.3 | GM | | 2763 | - | GM | | 2711 | ½ - ½ | PGN |
| 3.4 | GM | | 2722 | - | GM | | 2672 | ½ - ½ | PGN |
| Bo. | 15 | Czech Republic | Rtg | - | 23 | Iran | Rtg | 2½:1½ | PGN |
| 4.1 | GM | | 2662 | - | GM | | 2649 | 1 - 0 | PGN |
| 4.2 | GM | | 2557 | - | GM | | 2589 | ½ - ½ | PGN |
| 4.3 | GM | | 2574 | - | GM | | 2576 | ½ - ½ | PGN |
| 4.4 | GM | | 2556 | - | GM | | 2582 | ½ - ½ | PGN |
| Bo. | 4 | Azerbaijan | Rtg | - | 9 | England | Rtg | 3½: ½ | PGN |
| 5.1 | GM | | 2820 | - | GM | | 2712 | 1 - 0 | PGN |
| 5.2 | GM | | 2751 | - | GM | | 2672 | 1 - 0 | PGN |
| 5.3 | GM | | 2721 | - | GM | | 2689 | ½ - ½ | PGN |
| 5.4 | GM | | 2699 | - | GM | | 2677 | 1 - 0 | PGN |
| Bo. | 3 | China | Rtg | - | 18 | Croatia | Rtg | 3½: ½ | PGN |
| 6.1 | GM | | 2804 | - | GM | | 2689 | 1 - 0 | PGN |
| 6.2 | GM | | 2765 | - | GM | | 2600 | 1 - 0 | PGN |
| 6.3 | GM | | 2742 | - | GM | | 2579 | ½ - ½ | PGN |
| 6.4 | GM | | 2712 | - | GM | | 2567 | 1 - 0 | PGN |
| Bo. | 25 | Greece | Rtg | - | 8 | Armenia | Rtg | 1 : 3 | PGN |
| 7.1 | GM | | 2601 | - | GM | | 2780 | 0 - 1 | PGN |
| 7.2 | GM | | 2594 | - | GM | | 2691 | ½ - ½ | PGN |
| 7.3 | GM | | 2544 | - | GM | | 2660 | ½ - ½ | PGN |
| 7.4 | GM | | 2552 | - | GM | | 2597 | 0 - 1 | PGN |
| Bo. | 20 | Argentina | Rtg | - | 6 | Ukraine | Rtg | 1½:2½ | PGN |
| 8.1 | GM | | 2649 | - | GM | | 2710 | 0 - 1 | PGN |
| 8.2 | GM | | 2621 | - | GM | | 2703 | 1 - 0 | PGN |
| 8.3 | GM | | 2562 | - | GM | | 2695 | ½ - ½ | PGN |
| 8.4 | GM | | 2548 | - | GM | | 2685 | 0 - 1 | PGN |
| Bo. | 11 | Poland | Rtg | - | 2 | Russia | Rtg | 2½:1½ | PGN |
| 9.1 | GM | | 2739 | - | GM | | 2760 | ½ - ½ | PGN |
| 9.2 | GM | | 2727 | - | GM | | 2768 | 0 - 1 | PGN |
| 9.3 | GM | | 2614 | - | GM | | 2779 | 1 - 0 | PGN |
| 9.4 | GM | | 2568 | - | GM | | 2747 | 1 - 0 | PGN |
| Bo. | 12 | Hungary | Rtg | - | 16 | Germany | Rtg | 1½:2½ | PGN |
| 10.1 | GM | | 2690 | - | GM | | 2661 | ½ - ½ | PGN |
| 10.2 | GM | | 2609 | - | GM | | 2639 | ½ - ½ | PGN |
| 10.3 | GM | | 2621 | - | GM | | 2618 | ½ - ½ | PGN |
| 10.4 | GM | | 2702 | - | GM | | 2591 | 0 - 1 | PGN |
| Bo. | 24 | Spain | Rtg | - | 45 | Serbia | Rtg | 3½: ½ | PGN |
| 11.1 | GM | | 2639 | - | GM | | 2517 | 1 - 0 | PGN |
| 11.2 | GM | | 2590 | - | GM | | 2527 | 1 - 0 | PGN |
| 11.3 | GM | | Lopez Martinez Josep Manuel |
| 2581 | - | GM | | 2497 | 1 - 0 | PGN |
| 11.4 | GM | | 2564 | - | IM | | 2495 | ½ - ½ | PGN |
| Bo. | 33 | Cuba | Rtg | - | 30 | Moldova | Rtg | 1½:2½ | PGN |
| 12.1 | GM | | 2588 | - | GM | | 2580 | ½ - ½ | PGN |
| 12.2 | GM | | 2566 | - | GM | | 2591 | 0 - 1 | PGN |
| 12.3 | GM | | Ortiz Suarez Isan Reynaldo |
| 2527 | - | GM | | 2505 | ½ - ½ | PGN |
| 12.4 | GM | | 2523 | - | GM | | 2580 | ½ - ½ | PGN |
| Bo. | 14 | Georgia 1 | Rtg | - | 50 | Lithuania | Rtg | 1 : 3 | PGN |
| 13.1 | GM | | 2634 | - | GM | | 2525 | 0 - 1 | PGN |
| 13.2 | GM | | 2607 | - | IM | | 2484 | ½ - ½ | PGN |
| 13.3 | GM | | 2715 | - | IM | | 2467 | ½ - ½ | PGN |
| 13.4 | GM | | 2590 | - | GM | | 2443 | 0 - 1 | PGN |
| Bo. | 61 | Venezuela | Rtg | - | 29 | Brazil | Rtg | 2 : 2 | PGN |
| 14.1 | GM | | Iturrizaga Bonelli Eduardo |
| 2636 | - | GM | | 2620 | ½ - ½ | PGN |
| 14.2 | IM | | Ynojosa Aponte Felix Jose |
| 2370 | - | GM | | 2558 | ½ - ½ | PGN |
| 14.3 | IM | | Zavarce Sayago Oscar Enrique |
| 2346 | - | GM | | 2543 | 1 - 0 | PGN |
| 14.4 | CM | | Vivas Zamora Fabian Ernesto |
| 2363 | - | GM | | 2542 | 0 - 1 | PGN |
| Bo. | 21 | Romania | Rtg | - | 74 | Jordan | Rtg | 4 : 0 | PGN |
| 15.1 | GM | | 2606 | - | FM | | 2232 | 1 - 0 | PGN |
| 15.2 | GM | | 2623 | - | IM | | 2355 | 1 - 0 | PGN |
| 15.3 | GM | | 2594 | - | FM | | 2388 | 1 - 0 | PGN |
| 15.4 | GM | | 2551 | - | IM | | 2405 | 1 - 0 | PGN |
| Bo. | 22 | Turkey | Rtg | - | 79 | Singapore | Rtg | 3½: ½ | PGN |
| 16.1 | GM | | 2633 | - | IM | | 2335 | 1 - 0 | PGN |
| 16.2 | GM | | 2609 | - | WGM | | 2321 | ½ - ½ | PGN |
| 16.3 | GM | | 2588 | - | FM | | 2297 | 1 - 0 | PGN |
| 16.4 | GM | | 2502 | - | CM | | 2134 | 1 - 0 | PGN |
| Bo. | 70 | Scotland | Rtg | - | 19 | Peru | Rtg | 0 : 4 | PGN |
| 17.1 | IM | | 2441 | - | GM | | 2609 | 0 - 1 | PGN |
| 17.2 | FM | | 2345 | - | IM | | 2494 | 0 - 1 | PGN |
| 17.3 | FM | | 2292 | - | GM | | Martinez Alcantara Jose Eduardo |
| 2565 | 0 - 1 | PGN |
| 17.4 | IM | | 2301 | - | GM | | 2571 | 0 - 1 | PGN |
| Bo. | 63 | Portugal | Rtg | - | 49 | Chile | Rtg | 1½:2½ | PGN |
| 18.1 | GM | | 2471 | - | GM | | Henriquez Villagra Cristobal |
| 2519 | 0 - 1 | PGN |
| 18.2 | IM | | 2440 | - | IM | | 2486 | 0 - 1 | PGN |
| 18.3 | IM | | Martins David Pires Tavares |
| 2402 | - | IM | | 2444 | 1 - 0 | PGN |
| 18.4 | IM | | 2365 | - | IM | | Valenzuela Fuentealba Luis |
| 2443 | ½ - ½ | PGN |
| Bo. | 38 | Norway | Rtg | - | 44 | Iceland | Rtg | 4 : 0 | PGN |
| 19.1 | GM | | 2618 | - | GM | | 2573 | 1 - 0 | PGN |
| 19.2 | GM | | 2535 | - | GM | | 2530 | 1 - 0 | PGN |
| 19.3 | IM | | Notkevich Benjamin Arvola |
| 2493 | - | GM | | 2502 | 1 - 0 | PGN |
| 19.4 | GM | | 2477 | - | IM | | 2428 | 1 - 0 | PGN |
| Bo. | 95 | Zambia | Rtg | - | 56 | Bosnia & Herzegovina | Rtg | 0 : 4 | PGN |
| 20.1 | IM | | 2393 | - | GM | | 2543 | 0 - 1 | PGN |
| 20.2 | FM | | 2273 | - | GM | | 2492 | 0 - 1 | PGN |
| 20.3 | | | 2160 | - | IM | | 2382 | 0 - 1 | PGN |
| 20.4 | | | 2237 | - | FM | | 2380 | 0 - 1 | PGN |
| Bo. | 26 | Slovenia | Rtg | - | 39 | Switzerland | Rtg | 2 : 2 | PGN |
| 21.1 | GM | | 2578 | - | GM | | 2619 | 0 - 1 | PGN |
| 21.2 | GM | | 2570 | - | GM | | 2544 | ½ - ½ | PGN |
| 21.3 | GM | | 2565 | - | GM | | 2522 | 1 - 0 | PGN |
| 21.4 | IM | | 2456 | - | GM | | 2484 | ½ - ½ | PGN |
| Bo. | 31 | Latvia | Rtg | - | 40 | Egypt | Rtg | 1½:2½ | PGN |
| 22.1 | GM | | 2646 | - | GM | | 2686 | 0 - 1 | PGN |
| 22.2 | GM | | 2566 | - | GM | | 2620 | 0 - 1 | PGN |
| 22.3 | GM | | 2535 | - | IM | | 2431 | ½ - ½ | PGN |
| 22.4 | GM | | 2509 | - | GM | | 2408 | 1 - 0 | PGN |
| Bo. | 42 | Georgia 2 | Rtg | - | 41 | Australia | Rtg | 2 : 2 | PGN |
| 23.1 | GM | | 2564 | - | GM | | 2549 | 1 - 0 | PGN |
| 23.2 | GM | | 2508 | - | GM | | 2523 | 0 - 1 | PGN |
| 23.3 | GM | | 2497 | - | GM | | 2512 | 1 - 0 | PGN |
| 23.4 | GM | | 2495 | - | IM | | 2507 | 0 - 1 | PGN |
| Bo. | 71 | Tajikistan | Rtg | - | 13 | Netherlands | Rtg | 0 : 4 | PGN |
| 24.1 | GM | | 2615 | - | GM | | 2780 | 0 - 1 | PGN |
| 24.2 | IM | | 2430 | - | GM | | 2639 | 0 - 1 | PGN |
| 24.3 | | | Khusenkhojaev Mustafokhuja |
| 2229 | - | GM | | 2624 | 0 - 1 | PGN |
| 24.4 | | | 2178 | - | GM | | 2604 | 0 - 1 | PGN |
| Bo. | 37 | Kazakhstan | Rtg | - | 17 | Belarus | Rtg | 1½:2½ | PGN |
| 25.1 | GM | | 2605 | - | GM | | 2664 | 0 - 1 | PGN |
| 25.2 | GM | | 2538 | - | GM | | 2610 | ½ - ½ | PGN |
| 25.3 | GM | | 2582 | - | GM | | 2583 | ½ - ½ | PGN |
| 25.4 | IM | | 2449 | - | GM | | 2568 | ½ - ½ | PGN |
| Bo. | 92 | Morocco | Rtg | - | 65 | Georgia 3 | Rtg | 1 : 3 | PGN |
| 26.1 | IM | | 2388 | - | IM | | 2471 | ½ - ½ | PGN |
| Bo. | 55 | Estonia | Rtg | - | 54 | Philippines | Rtg | 2½:1½ | PGN |
| 27.1 | GM | | 2542 | - | GM | | 2553 | ½ - ½ | PGN |
| 27.2 | GM | | 2500 | - | GM | | 2464 | ½ - ½ | PGN |
| 27.3 | GM | | 2457 | - | IM | | 2439 | 1 - 0 | PGN |
| Bo. | 67 | Uruguay | Rtg | - | 43 | FYR Macedonia | Rtg | ½ :3½ | PGN |
| 28.1 | GM | | 2477 | - | GM | | 2590 | ½ - ½ | PGN |
| 28.2 | IM | | 2439 | - | IM | | 2489 | 0 - 1 | PGN |
| 28.3 | IM | | 2308 | - | GM | | 2496 | 0 - 1 | PGN |
| Bo. | 62 | Turkmenistan | Rtg | - | 69 | Indonesia | Rtg | 1 : 3 | PGN |
| 29.1 | GM | | 2505 | - | FM | | 2498 | ½ - ½ | PGN |
| 29.2 | IM | | 2443 | - | IM | | 2441 | 0 - 1 | PGN |
| Bo. | 35 | Austria | Rtg | - | 97 | Japan | Rtg | 3½: ½ | PGN |
| 30.1 | GM | | 2686 | - | IM | | 2408 | 1 - 0 | PGN |
| 30.2 | GM | | 2508 | - | IM | | 2324 | ½ - ½ | PGN |
| 30.3 | GM | | 2501 | - | CM | | 2170 | 1 - 0 | PGN |
| 30.4 | GM | | 2512 | - | | | 2161 | 1 - 0 | PGN |
| Bo. | 57 | Algeria | Rtg | - | 64 | Bangladesh | Rtg | 2 : 2 | PGN |
| 31.1 | GM | | 2501 | - | GM | | 2472 | ½ - ½ | PGN |
| 31.2 | GM | | 2445 | - | GM | | 2477 | 0 - 1 | PGN |
| 31.3 | IM | | 2482 | - | FM | | 2263 | ½ - ½ | PGN |
| Bo. | 81 | Luxembourg | Rtg | - | 47 | Montenegro | Rtg | 1½:2½ | PGN |
| 32.1 | IM | | 2464 | - | GM | | 2567 | 1 - 0 | PGN |
| 32.2 | IM | | 2358 | - | GM | | 2476 | 0 - 1 | PGN |
| 32.3 | | | 2273 | - | GM | | 2465 | ½ - ½ | PGN |
| Bo. | 86 | Iraq | Rtg | - | 48 | Slovakia | Rtg | 1½:2½ | PGN |
| 33.1 | IM | | Al-Ali Hussein Ali Hussein |
| 2273 | - | GM | | 2523 | 1 - 0 | PGN |
| 33.3 | IM | | Al-Saffar Araz Basim Mohammed S |
| 2400 | - | GM | | 2481 | 0 - 1 | PGN |
| 33.4 | FM | | Abdulwahhab Ahmed Abdulsattar A |
| 2271 | - | IM | | 2466 | ½ - ½ | PGN |
| Bo. | 66 | Ireland | Rtg | - | 76 | Faroe Islands | Rtg | 2 : 2 | PGN |
| 36.1 | GM | | 2452 | - | GM | | 2550 | ½ - ½ | PGN |
| 36.2 | IM | | 2433 | - | FM | | 2248 | ½ - ½ | PGN |
| Bo. | 34 | Italy | Rtg | - | 88 | Tunisia | Rtg | 3½: ½ | PGN |
| 37.1 | GM | | 2615 | - | FM | | 2218 | 1 - 0 | PGN |
| 37.2 | GM | | 2547 | - | IM | | 2361 | ½ - ½ | PGN |
| 37.3 | GM | | 2552 | - | IM | | 2376 | 1 - 0 | PGN |
| 37.4 | IM | | 2500 | - | CM | | 2146 | 1 - 0 | PGN |
| Bo. | 51 | Paraguay | Rtg | - | 59 | Belgium | Rtg | 3 : 1 | PGN |
| 38.1 | GM | | 2619 | - | IM | | 2427 | 1 - 0 | PGN |
| 38.2 | IM | | 2468 | - | IM | | 2396 | 0 - 1 | PGN |
| 38.3 | GM | | 2486 | - | FM | | 2299 | 1 - 0 | PGN |
| 38.4 | FM | | 2358 | - | IM | | 2483 | 1 - 0 | PGN |
| Bo. | 52 | Denmark | Rtg | - | 72 | Myanmar | Rtg | 2 : 2 | PGN |
| 39.1 | GM | | 2514 | - | IM | | 2473 | 1 - 0 | PGN |
| 39.2 | IM | | 2462 | - | IM | | 2389 | ½ - ½ | PGN |
| 39.3 | IM | | 2467 | - | | | 2200 | ½ - ½ | PGN |
| 39.4 | IM | | 2423 | - | FM | | 2235 | 0 - 1 | PGN |
| Bo. | 58 | Colombia | Rtg | - | 28 | Canada | Rtg | ½ :3½ | PGN |
| 40.1 | IM | | Gallego Alcaraz Andres Felipe |
| 2511 | - | GM | | 2629 | ½ - ½ | PGN |
| 40.2 | IM | | 2465 | - | GM | | 2513 | 0 - 1 | PGN |
| 40.3 | IM | | 2424 | - | IM | | 2482 | 0 - 1 | PGN |
| 40.4 | IM | | 2438 | - | GM | | 2666 | 0 - 1 | PGN |
| Bo. | 68 | Costa Rica | Rtg | - | 77 | New Zealand | Rtg | 2 : 2 | PGN |
| 41.2 | GM | | 2452 | - | FM | | 2349 | ½ - ½ | PGN |
| Bo. | 80 | Kosovo | Rtg | - | 53 | Finland | Rtg | 2½:1½ | PGN |
| 43.1 | IM | | 2408 | - | GM | | 2579 | ½ - ½ | PGN |
| Bo. | 78 | Ecuador | Rtg | - | 82 | Dominican Republic | Rtg | 3 : 1 | PGN |
| 44.1 | GM | | Matamoros Franco Carlos S. |
| 2494 | - | IM | | Munoz Santana Jose Lisandro |
| 2434 | 1 - 0 | PGN |
| Bo. | 46 | Mongolia | Rtg | - | 119 | Malawi | Rtg | 4 : 0 | PGN |
| 45.1 | GM | | 2570 | - | FM | | 2091 | 1 - 0 | PGN |
| 45.4 | FM | | 2470 | - | CM | | 2231 | 1 - 0 | PGN |
| Bo. | 110 | Zimbabwe | Rtg | - | 60 | Albania | Rtg | 2 : 2 | PGN |
| 47.1 | IM | | 2338 | - | GM | | 2567 | 1 - 0 | PGN |
| Bo. | 96 | Yemen | Rtg | - | 73 | Monaco | Rtg | 3 : 1 | PGN |
| 48.1 | IM | | 2419 | - | GM | | 2421 | 1 - 0 | PGN |
| Bo. | 108 | United Arab Emirates | Rtg | - | 75 | Mexico | Rtg | 2 : 2 | PGN |
| 49.3 | IM | | 2112 | - | | | Tello Chavez Isaac Valent |
| 2319 | 1 - 0 | PGN |
| Bo. | 125 | Bahrain | Rtg | - | 36 | Uzbekistan | Rtg | 0 : 4 | PGN |
| 50.1 | FM | | 2243 | - | GM | | 2558 | 0 - 1 | PGN |
| 50.2 | CM | | 2096 | - | IM | | 2521 | 0 - 1 | PGN |