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

Federations · 1 represented

🇵🇱Poland×49

Top 3

🥇
Jakub Strawa
🇵🇱POL·1743
6.5pts·2386perf+29.6
🥈
Jan Marcinkowski
🇵🇱POL·1668
6.0pts·1747perf+18.8
🥉
Witold Rusek
🇵🇱POL·1722
5.5pts·1815perf+22.8

How it unfolded

Top 6 · 7 rounds

Jakub 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

Strawa6.5Marcinkowski6Rusek5.5Oszutowska5.5Pospieszny5Raburski5

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
+92.8
5.0 pts · #4
2Drzewiecki, WojciechPOL
+82.8
4.5 pts · #6
3Trzcinski, WojciechPOL
+44.8
4.0 pts · #10

Top rating losers

1Galus, FilipPOL
-39.6
4.0 pts · #48
2Blochowiak, SebastianPOL
-38.0
4.0 pts · #53
3Krawczyk, LukaszPOL
-28.0
4.0 pts · #34

Biggest upsets

R3+231 Elo gap
Raburski, Witold1465 beat Stanczewski, Maciej1696
R3+211 Elo gap
Marcinkowski, Jan1668 beat Gorecki, Michal1879
R2+182 Elo gap
Raburski, Witold1465 beat Rothe, Oskar1647