Miedzynarodowy Turniej Szachowy o korone Boleslawa Chrobrego - OPEN B.
Open SwissStandard
61 players participated in this 7-round tournament, held from 29 Nov 2025 to 30 Nov 2025 in Gniezno, Poland. Top 10 Elo average was 1663, and top seed was Michal Gorecki (🇵🇱 POL, 1879).
Jakub Strawa (🇵🇱 POL, 1743) won with 6.5/7, ahead of Jan Marcinkowski (6.0) and Witold Rusek (5.5). Strawa won solo starting round 5.
The biggest upset came in round 3: Witold Raburski (1465) beat Maciej Stanczewski (1696), a +231-point gap.
Location
🇵🇱Gniezno, Poland
Dates
29 Nov 2025 → 30 Nov 2025
Time control
Standard: 60 minutes for game
System
Swiss · 7 rounds
Avg top 10
1,663
Participants
61
Federations · 1 represented
🇵🇱Poland×49
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 7 roundsJakub Strawa led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.
Co-leaders
29
13
5
2
1
1
1
R5–R7 · LEAD HELD
Jakub Strawa held the sole lead from R5 through R7 without losing it.
R4 · HEAD-TO-HEAD · WINNER VS 2ND
Jakub Strawa beat Jan Marcinkowski (White).
WIN STREAKS · 3 top finishers
Jakub Strawa 6 wins (R1–R6)Jan Marcinkowski 3+3 wins (R1–R3, R5–R7)Witold Rusek 3 wins (R1–R3)
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Jakub Strawa | * | 1 | — | — |
| 2Jan Marcinkowski | 0 | * | — | — |
| 3Witold Rusek | — | — | * | ½ |
| 4Anna Oszutowska | — | — | ½ | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | R6 | R7 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Strawa, Jakub | 1743 | POL | +10N | +26B | +18N | +2B | +8N | +5B | =?N | 6.5 | 28.5 | 28.5 | 28.50 | 2386 | +29.6 |
| 2 | Marcinkowski, Jan | 1668 | POL | +32B | +17N | +?B | −1N | +15B | +?B | +9N | 6.0 | 22.0 | 22.0 | 15.50 | 1747 | +18.8 |
| 3 | Rusek, Witold | 1722 | POL | +36B | +19N | +13B | −8N | +20B | +6N | =4B | 5.5 | 28.0 | 31.0 | 23.25 | 1815 | +22.8 |
| 4 | Oszutowska, Anna | 1714 | POL | +35B | +49N | =9B | =5B | +23N | +11B | =3N | 5.5 | 26.5 | 29.0 | 21.50 | 1726 | +5.2 |
| 5 | Raburski, Witold | 1465 | POL | +56N | +6B | +16B | =4N | +9B | −1N | =7N | 5.0 | 30.5 | 31.5 | 19.75 | 1827 | +92.8 |
| 6 | Rothe, Oskar | 1647 | POL | +40B | −5N | +21B | +17N | +10B | −3B | +15N | 5.0 | 27.0 | 30.0 | 19.50 | 1522 | -25.2 |
| 7 | Pospieszny, Bartosz | 0 | POL | +?B | +27B | =12N | −9N | +28B | +16N | =5B | 5.0 | 25.0 | 25.0 | 15.75 | 1641 | 0.0 |
| 8 | Doberschutz, Wojciech | 1657 | POL | +34N | +24B | +?N | +3B | −1B | −?N | +17B | 5.0 | 23.0 | 23.0 | 16.50 | 1792 | +14.2 |
| 9 | Maciejewski, Iwo | 1577 | POL | +45N | +11B | =4N | +7B | −5N | +18B | −2B | 4.5 | 30.0 | 33.0 | 19.25 | 1524 | -15.2 |
| 10 | Lukowski, Arkadiusz | 0 | POL | −1B | +57N | +27N | +12B | −6N | =19B | +31N | 4.5 | 27.0 | 28.0 | 14.50 | 1616 | 0.0 |
| 11 | Drzewiecki, Wojciech | 0 | POL | +39B | −9N | +?B | +14N | +16B | −4N | =13B | 4.5 | 26.0 | 26.0 | 13.75 | 1701 | +82.8 |
| 12 | Van Ams, James | 1591 | POL | +47B | =15N | =7B | −10N | =29B | +41N | +21B | 4.5 | 24.0 | 26.5 | 15.75 | 1434 | -8.4 |
| 13 | Lieske, Milena | 1591 | POL | +53N | +43B | −3N | +22B | −?N | +51B | =11N | 4.5 | 21.0 | 21.0 | 13.25 | 1662 | +11.6 |
| 14 | Pawlak, Mateusz | 1565 | POL | +48N | −?B | +51N | −11B | =33N | +34B | +27N | 4.5 | 18.5 | 18.5 | 12.50 | 2373 | +20.8 |
| 15 | Trzcinski, Wojciech | 1435 | POL | +44N | =12B | +28N | =20B | −2N | +23B | −6B | 4.0 | 27.0 | 30.0 | 14.75 | 1578 | +44.8 |
| 16 | Stanczewski, Maciej | 1696 | POL | +51N | +31B | −5N | +24B | −11N | −7B | +43N | 4.0 | 25.0 | 27.0 | 12.50 | 1648 | -4.0 |
| 17 | Krawczyk, Lukasz | 1486 | POL | +60N | −2B | +53N | −6B | +38N | +33B | −8N | 4.0 | 24.0 | 24.0 | 8.00 | 854 | -28.0 |
| 18 | Wysokowicz, Szymon | 1603 | POL | +59N | +22B | −1B | +29N | −?B | −9N | +36B | 4.0 | 22.5 | 22.5 | 11.50 | 1471 | -21.2 |
| 19 | Makarewicz, Piotr | 1551 | POL | +38N | −3B | =34N | −33B | +48N | =10N | +40B | 4.0 | 22.0 | 24.5 | 12.25 | 939 | -10.4 |
| 20 | Kukla, Stanislaw | 1580 | POL | =55B | +42N | +25B | =15N | −3N | +22B | −?N | 4.0 | 22.0 | 22.0 | 13.75 | 1616 | +7.2 |
| 21 | Korzystka, Maksymilian | 0 | POL | −?B | +50N | −6N | +48B | +26N | +24B | −12N | 4.0 | 22.0 | 22.0 | 12.50 | 1560 | 0.0 |
| 22 | Blochowiak, Sebastian | 1455 | POL | +58B | −18N | +37B | −13N | +39B | −20N | +33B | 4.0 | 21.5 | 22.5 | 10.00 | 791 | -38.0 |
| 23 | Galus, Filip | 1562 | POL | +50B | −?N | +35B | +32N | −4B | −15N | +30N | 4.0 | 21.0 | 21.0 | 11.50 | 774 | -39.6 |
| 24 | Mikula, Mateusz | 1466 | POL | +61B | −8N | +47B | −16N | +50B | −21N | +37B | 4.0 | 20.5 | 20.5 | 7.50 | 877 | -18.4 |
| 25 | Blochowiak, Franciszek | 1472 | POL | =33N | +37B | −20N | =34B | =30N | =36B | +38N | 4.0 | 19.5 | 22.5 | 12.25 | 778 | -13.2 |
| 26 | Grycel, Hanna | 1540 | POL | +57B | −1N | −32B | +52N | −21B | +50N | +51N | 4.0 | 19.5 | 20.5 | 7.00 | 944 | -9.6 |
| 27 | Radwanski, Oliwier | 1572 | POL | +52B | −7N | −10B | =47N | +37B | +32N | −14B | 3.5 | 22.5 | 24.5 | 9.25 | 756 | -20.8 |
| 28 | Rusek, Franciszek | 1495 | POL | =42B | +55N | −15B | +39N | −7N | −30B | +35N | 3.5 | 21.5 | 23.0 | 9.00 | 634 | -19.6 |
| 29 | Piotrowska, Maria | 0 | POL | −37N | +52B | +38N | −18B | =12N | −31B | +48N | 3.5 | 20.5 | 22.5 | 9.75 | 1283 | 0.0 |
| 30 | Kruszka, Mateusz | 0 | POL | −49B | −35N | +58B | +40N | =25B | +28N | −23B | 3.5 | 20.0 | 21.0 | 9.50 | 1406 | 0.0 |
| 31 | Gubala, Mikolaj | 1472 | POL | +54B | −16N | +40B | −?N | =32B | +29N | −10B | 3.5 | 19.5 | 19.5 | 9.50 | 896 | -8.8 |
| 32 | Slawinski, Jan | 0 | POL | −2N | +60B | +26N | −23B | =31N | −27B | =42B | 3.0 | 24.0 | 24.0 | 7.25 | 1413 | 0.0 |
| 33 | Wisniewski, Adam | 0 | POL | =25B | −?N | +41B | +19N | =14B | −17N | −22N | 3.0 | 23.5 | 23.5 | 11.25 | 1405 | 0.0 |
| 34 | Spychala, Wiktor | 0 | POL | −8B | +61N | =19B | =25N | =49B | −14N | =41B | 3.0 | 23.0 | 23.0 | 6.75 | 1398 | 0.0 |
| 35 | Prus, Krzysztof | 0 | POL | −4N | +30B | −23N | −38B | +52B | +39N | −28B | 3.0 | 22.5 | 24.5 | 8.50 | 770 | 0.0 |
| 36 | Mortek, Fabian | 0 | POL | −3N | −38B | +42B | =54N | +47B | =25N | −18N | 3.0 | 22.0 | 23.5 | 8.25 | 1326 | 0.0 |
| 37 | Pasternak, Daniel | 0 | POL | +29B | −25N | −22N | +59B | −27N | +45B | −24N | 3.0 | 22.0 | 23.0 | 7.50 | 687 | 0.0 |
| 38 | Konwinski, Maksymilian | 0 | POL | −19B | +36N | −29B | +35N | −17B | +47N | −25B | 3.0 | 21.5 | 24.0 | 8.50 | 684 | 0.0 |
| 39 | Smigielski-Owczarzak, Antoni | 0 | POL | −11N | +45B | +43N | −28B | −22N | −35B | +60N | 3.0 | 21.0 | 21.0 | 6.00 | 1308 | 0.0 |
| 40 | Trojanowski, Artur | 0 | POL | −6N | +56B | −31N | −30B | +44N | +60B | −19N | 3.0 | 20.0 | 20.0 | 4.00 | 756 | 0.0 |
| 41 | Krawczyk, Tomasz | 0 | POL | −?N | =48B | −33N | +44B | +42N | −12B | =34N | 3.0 | 19.0 | 19.0 | 8.75 | 790 | -14.8 |
| 42 | Marmurowicz, Adrian | 0 | POL | =28N | −20B | −36N | +55N | −41B | +58B | =32N | 3.0 | 18.0 | 19.0 | 5.75 | 1311 | 0.0 |
| 43 | Korzystka, Ignacy | 1435 | POL | +46B | −13N | −39B | −50N | +54B | +56N | −16B | 3.0 | 18.0 | 19.0 | 5.50 | 843 | -17.2 |
| 44 | FIDE 91183340 | 0 | — | −15B | −47N | +57B | −41N | −40B | +52N | +50B | 3.0 | 16.5 | 17.5 | 5.00 | 634 | 0.0 |
| 45 | FIDE 91108950 | 0 | — | −9B | −39N | −54B | +61N | +46B | −37N | +56B | 3.0 | 16.0 | 16.0 | 4.00 | 790 | 0.0 |
| 46 | FIDE 545056889 | 0 | — | −43N | −53B | +60N | −51B | −45N | +57B | +54N | 3.0 | 12.5 | 12.5 | 2.50 | 616 | 0.0 |
| 47 | Fijalkowska, Maria | 0 | POL | −12N | +44B | −24N | =27B | −36N | −38B | +55N | 2.5 | 21.0 | 22.5 | 6.25 | 1270 | -19.6 |
| 48 | FIDE 545027269 | 0 | — | −14B | =41N | +55B | −21N | −19B | +54N | −29B | 2.5 | 20.5 | 22.0 | 4.50 | 754 | 0.0 |
| 49 | Chmielewski, Leon | 1522 | POL | +30N | −4B | +59N | −?B | =34N | — | — | 2.5 | 13.0 | 13.0 | 6.00 | 913 | -10.0 |
| 50 | Eggebrecht, Alexander | 0 | POL | −23N | −21B | +56N | +43B | −24N | −26B | −44N | 2.0 | 22.0 | 23.0 | 4.00 | 1304 | 0.0 |
| 51 | FIDE 545018421 | 0 | — | −16B | +54N | −14B | +46N | F | −13N | −26B | 2.0 | 21.5 | 21.5 | 4.50 | 795 | 0.0 |
| 52 | Andrzejewski, Witold | 0 | POL | −27N | −29N | +61B | −26B | −35N | −44B | +57N | 2.0 | 18.0 | 18.0 | 1.00 | 757 | 0.0 |
| 53 | Gumienna, Lana | 0 | POL | −13B | +46N | −17B | −?N | −56B | −55N | +61N | 2.0 | 14.0 | 14.0 | 3.00 | 785 | 0.0 |
| 54 | FIDE 545056927 | 0 | — | −31N | −51B | +45N | =36B | −43N | −48B | −46B | 1.5 | 18.0 | 20.0 | 4.50 | 644 | 0.0 |
| 55 | FIDE 91160405 | 0 | — | =20N | −28B | −48N | −42B | −57N | +53B | −47B | 1.5 | 17.5 | 18.5 | 4.00 | 1311 | 0.0 |
| 56 | FIDE 545056153 | 0 | — | −5B | −40N | −50B | F | +53N | −43B | −45N | 1.0 | 18.0 | 19.0 | 2.00 | 642 | 0.0 |
| 57 | FIDE 545056862 | 0 | — | −26N | −10B | −44N | F | +55B | −46N | −52B | 1.0 | 18.0 | 19.0 | 1.50 | 740 | 0.0 |
| 58 | FIDE 545056870 | 0 | — | −22N | −59B | −30N | F | +61B | −42N | F | 1.0 | 11.5 | 11.5 | 0.00 | 655 | 0.0 |
| 59 | Zimny, Wojciech | 0 | POL | −18B | +58N | −49B | −37N | F | — | — | 1.0 | 10.5 | 10.5 | 1.00 | 762 | 0.0 |
| 60 | FIDE 545056897 | 0 | — | −17B | −32N | −46B | F | F | −40N | −39B | 0.0 | 17.0 | 18.0 | 0.00 | 646 | 0.0 |
| 61 | FIDE 545018448 | 0 | — | −24N | −34B | −52N | −45B | −58N | F | −53B | 0.0 | 15.0 | 15.0 | 0.00 | 665 | 0.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Raburski, WitoldPOL+92.85.0 pts · #4
- 2Drzewiecki, WojciechPOL+82.84.5 pts · #6
- 3Trzcinski, WojciechPOL+44.84.0 pts · #10
Top rating losers
- 1Galus, FilipPOL-39.64.0 pts · #48
- 2Blochowiak, SebastianPOL-38.04.0 pts · #53
- 3Krawczyk, LukaszPOL-28.04.0 pts · #34
Biggest upsets
- R3+231 Elo gap
- R3+211 Elo gap
- R2+182 Elo gap