78 Otwarte Mistrzostwa Wojewodztwa Kujawsko-Pomorskiego w Szachach Klasycznych.

Open SwissStandard

36 players participated in this 9-round tournament, held from 09 Jul 2025 to 13 Jul 2025 in Inowroclaw, Poland. 1 titled players from 3 federations. Top 10 Elo average was 1951, and top seed was Oskar Anton Hackner (🇵🇱 POL, 2144).

Damian Markowski (🇵🇱 POL, FM, 2054) won with 6.5/9, ahead of Szymon Zajac (6.5) and Mikolaj Wloch (6.5). Markowski shared the lead from round 8, winning on tie-break.

The biggest upset came in round 8: Jacek Mietkiewicz (1831) beat Oskar Anton Hackner (2144), a +313-point gap.

Location

🇵🇱Inowroclaw, Poland

Dates

09 Jul 2025 → 13 Jul 2025

Time control

Standard: 60 minutes with 30 seconds increment from move 1

System

Swiss · 9 rounds

Top seed

🇵🇱Oskar Anton Hackner2144

Avg top 10

1,951

Participants

Titled players · 1

FM×1

Federations · 3 represented

🇵🇱Poland×33

🇱🇺Luxembourg×2

🇬🇧England×1

Top 3

🥇
FMDamian Markowski
🇵🇱POL·2054
6.5pts·2051perf+4.0
🥈
Szymon Zajac
🇵🇱POL·2060
6.5pts·2023perf-2.5
🥉
Mikolaj Wloch
🇵🇱POL·1941
6.5pts·2002perf+17.6

How it unfolded

Top 6 · 9 rounds

Tight race until R9; 3 players tied at 6.5/9, decided on Buchholz.

Co-leaders

Markowski6.5Zajac6.5Wloch6.5Mietkiewicz6Cichocki6Grochowalski6— ex-leaders:Hacknerled R4–R6, #7

R7 · LEADER CHANGE12 Jul

Szymon Zajac takes the sole lead (5.5/7).

R9 · TIEBREAK CLUSTER

3 players finish on 6.5/9. Markowski takes the title on Buchholz Cut1 (45.5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

FM Damian Markowski drew with Szymon Zajac (White).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1FMDamian Markowski	*	½	½	½
2Szymon Zajac	½	*	—	½
3Mikolaj Wloch	½	—	*	½
4Jacek Mietkiewicz	½	½	½	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Markowski, DamianFM	2054	POL	+10N	+17B	=4N	=2B	+8N	=9B	=12N	+13B	=3N	6.5	45.5	50.0	35.25	2051	+4.0
2	Zajac, Szymon	2060	POL	+19B	=22N	+11B	=1N	=12B	+5N	+8N	=9B	=4B	6.5	44.5	48.5	35.00	2023	-2.5
3	Wloch, Mikolaj	1941	POL	+28N	+7B	−8N	+18B	=4N	+13B	=9N	+12B	=1B	6.5	44.0	47.5	33.00	2002	+17.6
4	Mietkiewicz, Jacek	1831	POL	+30B	+14N	=1B	=6N	=3B	−12N	+11B	+8B	=2N	6.0	46.5	50.0	32.25	2017	+43.2
5	Cichocki, Konrad	1815	POL	+21N	−8B	+15N	+7B	−9N	−2B	+19N	+22B	+12N	6.0	42.5	46.5	29.00	1927	+26.4
6	Grochowalski, Pawel	2069	POL	=18N	+35B	=13N	=4B	+19N	−8B	=17N	+15B	+9N	6.0	40.5	42.5	27.00	1907	-26.0
7	Weber, Wiktor	1692	POL	+20B	−3N	+25B	−5N	=18B	+23N	+24B	=10N	+14B	6.0	40.0	43.5	26.00	1768	+23.7
8	Hackner, Oskar Anton	2144	POL	+15B	+5N	+3B	+12N	−1B	+6N	−2B	−4N	=10B	5.5	48.0	53.0	31.25	1978	-31.0
9	Hilarecki, Grzegorz	1949	POL	+24B	+26N	−12B	+17N	+5B	=1N	=3B	=2N	−6B	5.5	45.0	48.5	27.75	1952	+3.4
10	Pender, Mikolaj	1613	POL	−1B	=34N	+27B	+20N	−17B	+18N	+14B	=7B	=8N	5.5	40.0	42.5	24.50	1796	+49.6
11	Stanczewski, Maciej	1664	POL	+33N	=13B	−2N	=16B	+28N	=17B	−4N	+20B	+22N	5.5	39.0	41.5	21.75	1781	+39.6
12	Polak, Aleksander	1826	POL	+23N	+16B	+9N	−8B	=2N	+4B	=1B	−3N	−5B	5.0	47.5	51.5	27.00	1933	+46.7
13	Kwiatkowski, Jacek	1822	POL	+25B	=11N	=6B	+14N	=22B	−3N	+21B	−1N	=17N	5.0	42.5	46.0	23.00	1819	0.0
14	Szumiec, Jan	1695	POL	+36N	−4B	+30N	−13B	+15N	+22B	−10N	+17B	−7N	5.0	39.5	41.0	18.50	1711	+6.4
15	Czajka, Iwo	1654	POL	−8N	+21B	−5B	+25N	−14B	+33N	+18B	−6N	+23B	5.0	39.0	41.5	19.00	1733	+11.4
16	Kosecki, Oskar	1663	POL	+27B	−12N	=20B	=11N	−23B	=25N	+29B	=21N	+26B	5.0	34.0	37.5	19.50	1643	-6.8
17	Karpinski, Andrzej	1742	POL	+34B	−1N	+24B	−9B	+10N	=11N	=6B	−14N	=13B	4.5	43.0	45.5	20.25	1765	+1.4
18	Bialkowski, Jan	1636	POL	=6B	+29N	=22B	−3N	=7N	−10B	−15N	+35B	+31N	4.5	40.0	42.0	17.00	1690	+13.7
19	Wisniewski, Tomasz	1621	POL	−2N	+31B	+26B	=22N	−6B	=29N	−5B	+27N	=21B	4.5	37.5	41.0	16.50	1714	+29.2
20	Dyniak, Bartlomiej	0	POL	−7N	+28B	=16N	−10B	−27N	+34B	+26B	−11N	+25N	4.5	36.0	38.5	15.50	1640	0.0
21	Oczachowski, Jan	1517	POL	−5B	−15N	+36B	+29N	=26B	+27N	−13N	=16B	=19N	4.5	36.0	37.5	15.00	1610	+29.2
22	Sobich, Stanislaw	1768	POL	+31B	=2B	=18N	=19B	=13N	−14N	+23B	−5N	−11B	4.0	41.0	44.5	17.75	1665	-24.8
23	Terekhov, Bohdan	1558	POL	−12B	=27N	=29B	+24N	+16N	−7B	−22N	+28B	−15N	4.0	36.0	39.5	16.00	1636	+30.8
24	Krawczyk, Wojciech	1594	POL	−9N	+32B	−17N	−23B	+34N	+30B	−7N	−31B	+35N	4.0	32.5	34.5	11.00	1396	-53.3
25	Szczepaniak, Tomasz	1532	POL	−13N	+33B	−7N	−15B	+35N	=16B	−28N	+32N	−20B	3.5	34.5	36.5	10.00	1315	-42.4
26	Guzdziol, Grzegorz	1747	LUX	+32N	−9B	−19N	=30B	=21N	=28B	−20N	+33B	−16N	3.5	34.0	36.5	11.25	1459	-90.0
27	Nikolaienko, Illia	0	POL	−16N	=23B	−10N	+36N	+20B	−21B	=33N	−19B	=30N	3.5	34.0	35.5	11.00	1318	0.0
28	Mrozowicz, Wojciech	1586	POL	−3B	−20N	+32B	+34N	−11B	=26N	+25B	−23N	F	3.5	33.0	33.0	10.75	1539	-16.0
29	Pycka, Zbigniew	1659	POL	=35N	−18B	=23N	−21B	+31N	=19B	−16N	=30B	=34N	3.5	32.0	34.0	11.75	1480	-35.0
30	Tobola, Tadeusz	1578	POL	−4N	+36B	−14B	=26N	=33B	−24N	=31B	=29N	=27B	3.5	31.5	33.0	9.75	1480	-31.2
31	Guzdziol, Olaf	1509	LUX	−22N	−19N	=33B	=32N	−29B	+36B	=30N	+24N	−18B	3.5	29.5	31.0	10.00	1450	-17.6
32	Canibol, Jakub	0	POL	−26B	−24N	−28N	=31B	=36N	=35B	=34N	−25B	+33N	3.0	25.0	26.5	7.25	1228	0.0
33	Hackner, Claes M	0	ENG	−11B	−25N	=31N	+35B	=30N	−15B	=27B	−26N	−32B	2.5	31.0	33.0	7.25	1342	0.0
34	Weber, Kornelia	0	POL	−17N	=10B	=35N	−28B	−24B	−20N	=32B	=36N	=29B	2.5	30.5	32.0	7.75	1399	0.0
35	Pindel, Kacper	0	POL	=29B	−6N	=34B	−33N	−25B	=32N	=36B	−18N	−24B	2.0	29.5	31.0	5.25	1332	0.0
36	Weber, Marcelina	0	POL	−14B	−30N	−21N	−27B	=32B	−31N	=35N	=34B	F	1.5	27.5	27.5	3.75	775	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Pender, MikolajPOL
+49.6
5.5 pts · #22
2Polak, AleksanderPOL
+46.7
5.0 pts · #10
3Mietkiewicz, JacekPOL
+43.2
6.0 pts · #4

Top rating losers

1Guzdziol, GrzegorzLUX
-90.0
3.5 pts · #28
2Krawczyk, WojciechPOL
-53.3
4.0 pts · #32
3Szczepaniak, TomaszPOL
-42.4
3.5 pts · #34

Biggest upsets

R8+313 Elo gap
Mietkiewicz, Jacek1831 beat Hackner, Oskar Anton2144
R4+142 Elo gap
Oczachowski, Jan1517 beat Pycka, Zbigniew1659
R3+126 Elo gap
Wisniewski, Tomasz1621 beat Guzdziol, Grzegorz1747