Polfinaly Mistrzostw Polski Juniorow 2025 C-17

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55 players participated in this 9-round tournament, held from 02 Nov 2025 to 09 Nov 2025 in Jastrzebia Gora, Poland. 1 titled players. Top 10 Elo average was 2088, and top seed was Kacper Klys (🇵🇱 POL, CM, 2140).

Jan Przybylski (🇵🇱 POL, 2123) won with 7.0/9, ahead of Aleksander Lonski (7.0) and Bruno Stachowiak (6.5). Przybylski took the lead from round 6, winning on tie-break.

The biggest upset came in round 2: Piotr Kuczynski (1647) beat Kacper Grech (2052), a +405-point gap.

Location

🇵🇱Jastrzebia Gora, Poland

Dates

02 Nov 2025 → 09 Nov 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 9 rounds

Top seed

🇵🇱CMKacper Klys2140

Avg top 10

2,088

Participants

Titled players · 1

CM×1

Federations · 1 represented

🇵🇱Poland×55

Top 3

🥇
Jan Przybylski
🇵🇱POL·2123
7.0pts·2174perf+28.8
🥈
Aleksander Lonski
🇵🇱POL·2053
7.0pts·2108perf+29.2
🥉
Bruno Stachowiak
🇵🇱POL·2062
6.5pts·2072perf+12.9

How it unfolded

Top 6 · 9 rounds

Tight race until R6; 2 players tied at 7.0/9, decided on Buchholz.

Co-leaders

Przybylski7Lonski7Stachowiak6.5Domanski6Gawlik6Kowalski6

R6 · LEADER CHANGE06 Nov

Jan Przybylski takes the sole lead (5.5/6).

R9 · TIEBREAK CLUSTER

2 players finish on 7.0/9. Przybylski takes the title on Buchholz Cut1 (44.0).

R9 · HEAD-TO-HEAD · WINNER VS 2ND

Jan Przybylski lost to Aleksander Lonski (Black).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Jan Przybylski	*	0	1	—
2Aleksander Lonski	1	*	—	1
3Bruno Stachowiak	0	—	*	1
4Wiktor Domanski	—	0	0	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Przybylski, Jan	2123	POL	+35B	=20N	+33B	+13N	+25B	+3B	=10N	+5B	−2N	7.0	44.0	48.0	35.75	2174	+28.8
2	Lonski, Aleksander	2053	POL	+28N	=14B	−25N	+33B	+17N	=19B	+4B	+16N	+1B	7.0	43.5	47.5	37.75	2108	+29.2
3	Stachowiak, Bruno	2062	POL	+46B	+26N	+43B	+4N	+11B	−1N	=7B	=19N	=9B	6.5	43.0	46.0	30.50	2072	+12.9
4	Domanski, Wiktor	1989	POL	+48N	+37B	+5N	−3B	=19N	+6B	−2N	+11N	=7B	6.0	46.0	49.0	30.00	2060	+40.8
5	Kowalski, Witold	2093	POL	+36B	+22N	−4B	+26N	+12B	=7N	+13B	−1N	=19B	6.0	44.5	48.5	30.00	2036	-20.0
6	Klys, KacperCM	2140	POL	+7B	+31N	=13B	=12N	=21B	−4N	=22B	+34B	+10N	6.0	43.0	47.0	30.50	2045	-34.4
7	Jozwiak, Oliwier	1803	POL	−6N	+48B	+37N	+52B	+9N	=5B	=3N	=10B	=4N	6.0	43.0	45.0	27.00	2084	+126.4
8	Gawlik, Olivier	1926	POL	=33B	+40N	=15B	+43N	=10B	=11N	=26B	=13N	+23B	6.0	39.5	42.5	27.25	2030	+52.8
9	Wilgosz, Szczepan	2040	POL	+34B	+42N	=11B	−25N	−7B	+27N	+41B	+26N	=3N	6.0	39.0	42.5	26.00	1955	-30.4
10	Rzap, Filip	2137	POL	+27N	=19B	=12N	+20B	=8N	+14B	=1B	=7N	−6B	5.5	46.0	50.5	29.75	2011	-50.4
11	Stepinski, Piotr	2048	POL	+44N	+17B	=9N	+14B	−3N	=8B	=12N	−4B	+21B	5.5	46.0	49.0	27.75	1999	-19.6
12	Bartnik, Michal	1908	POL	+29B	+16N	=10B	=6B	−5N	+20N	=11B	=15N	=13B	5.5	44.5	49.0	29.00	2097	+92.0
13	Wolak, Maciej	2037	POL	+45N	+30B	=6N	−1B	+28N	+25B	−5N	=8B	=12N	5.5	44.0	47.0	25.25	1979	-16.0
14	Korda, Filip	1857	POL	+50B	=2N	+16B	−11N	+35B	−10N	+30B	=23N	=15B	5.5	42.5	45.0	25.25	2020	+77.6
15	Przedlacki, Wiktor	2107	POL	=25N	+32B	=8N	=17B	=23N	=21N	+36B	=12B	=14N	5.5	41.5	45.5	27.00	1950	-64.8
16	Sniadecki, Oskar	2068	POL	+41N	−12B	−14N	+44B	+34N	=23B	+17N	−2B	+27N	5.5	40.5	43.5	23.00	1933	-53.6
17	Pyrek, Marcin	1819	POL	+54B	−11N	+51B	=15N	−2B	+33N	−16B	+30N	+25B	5.5	38.5	40.0	19.25	1892	+38.0
18	Gruca, Karol	1957	POL	−42B	−34N	+54B	=53N	+29B	=35N	=20B	+41N	+26B	5.5	30.5	32.0	19.25	1798	-62.4
19	Kryston, Aleksander	1930	POL	F	=10N	=20B	+22N	=4B	=2N	+21B	=3B	=5N	5.0	46.0	46.0	28.00	2093	+68.8
20	Druzd, Szymon	1889	POL	+53N	=1B	=19N	−10N	+43B	−12B	=18N	=28B	+34N	5.0	40.0	41.5	19.50	1908	+9.2
21	Stachniak, Stanislaw	1917	POL	−30N	+44B	+36N	+34B	=6N	=15B	−19N	+22B	−11N	5.0	39.5	42.5	21.75	1929	+5.7
22	Partyka, Wiktor	1844	POL	+38N	−5B	+45N	−19B	=24N	+28B	=6N	−21N	+37B	5.0	39.5	42.5	21.00	1901	+27.2
23	Urych, Krzysztof	1994	POL	+55B	−43N	=35B	+29N	=15B	=16N	+25N	=14B	−8N	5.0	38.5	40.0	20.75	1875	-47.2
24	Grech, Kacper	2052	POL	=40B	−33N	=50B	+45N	=22B	−26N	+42B	=36N	+35B	5.0	32.0	34.5	18.25	1781	-108.4
25	Zydok, Ignacy	1790	POL	=15B	+39N	+2B	+9B	−1N	−13N	−23B	+38B	−17N	4.5	45.5	49.5	23.75	1912	+52.4
26	Lachacz, Tymoteusz	1806	POL	+51N	−3B	+30N	−5B	+52N	+24B	=8N	−9B	−18N	4.5	41.5	43.5	16.50	1903	+44.8
27	Kempinski, Szymon	1797	POL	−10B	=29N	=39B	+42N	=31B	−9B	+45N	+33N	−16B	4.5	37.5	40.5	17.00	1813	+4.4
28	Panasiuk, Piotr	1753	POL	−2B	=54N	+46B	+50N	−13B	−22N	+29B	=20N	=31B	4.5	37.0	38.5	15.50	1801	+21.2
29	Owczarz, Michal	1638	POL	−12N	=27B	+32N	−23B	−18N	+44B	−28N	+53B	+42B	4.5	36.0	37.5	14.75	1808	+74.8
30	Dondalski, Aleksander	1645	POL	+21B	−13N	−26B	=47N	+46B	+43N	−14N	−17B	+41B	4.5	35.5	38.5	16.00	1826	+79.6
31	Szalanski, Wiktor	1899	POL	+49N	−6B	−34N	+37B	=27N	−36B	=38N	+43B	=28N	4.5	34.0	37.0	16.50	1730	-74.0
32	Witkiewicz, Mateusz	1850	POL	=39B	−15N	−29B	+40N	+53B	−41N	−33B	+47N	+36B	4.5	32.5	34.0	14.50	1739	-50.4
33	Kuczynski, Piotr	1647	POL	=8N	+24B	−1N	−2N	+51B	−17B	+32N	−27B	=38N	4.0	43.5	45.5	16.50	1791	+55.2
34	Andrzejewski, Jakub	1745	POL	−9N	+18B	+31B	−21N	−16B	+47N	+35B	−6N	−20B	4.0	41.5	44.5	17.00	1909	+70.8
35	Kolinski, Jakub	1796	POL	−1N	+49B	=23N	+38B	−14N	=18B	−34N	+39B	−24N	4.0	40.0	43.0	16.25	1778	-10.0
36	Szwed, Karol	1766	POL	−5N	+53B	−21B	=39N	+50B	+31N	−15N	=24B	−32N	4.0	37.0	38.5	13.00	1808	+14.8
37	Rauch, Dominik	1606	POL	+47B	−4N	−7B	−31N	+48N	−38B	+44N	+40B	−22N	4.0	35.5	38.5	13.00	1744	+59.6
38	Siewruk, Damian	1517	POL	−22B	=46N	+40B	−35N	=47B	+37N	=31B	−25N	=33B	4.0	33.0	36.0	15.25	1730	+88.8
39	Klimacki, Wiktor	1517	POL	=32N	−25B	=27N	=36B	−41N	+55B	=40B	−35N	+48B	4.0	32.0	33.5	13.00	1720	+87.2
40	Kowalski, Dawid	1749	POL	=24N	−8B	−38N	−32B	+54N	+53B	=39N	−37N	+43B	4.0	32.0	33.5	10.50	1645	-50.8
41	Krajdocha, Konrad	1760	POL	−16B	−50N	+55B	=51N	+39B	+32B	−9N	−18B	−30N	3.5	34.5	36.0	11.00	1678	-40.8
42	Wieteska, Stanislaw	1662	POL	+18N	−9B	−52N	−27B	=44N	+51B	−24N	+45B	−29N	3.5	33.5	35.5	12.00	1730	+21.6
43	Karys, Jakub	1622	POL	+52N	+23B	−3N	−8B	−20N	−30B	+46B	−31N	−40N	3.0	38.5	40.5	10.00	1739	+42.4
44	Stawecki, Bartlomiej	1748	POL	−11B	−21N	+49B	−16N	=42B	−29N	−37B	+54N	=47B	3.0	34.0	35.5	7.75	1643	-54.4
45	Awramiuk, Ignacy	1712	POL	−13B	+47N	−22B	−24B	=49N	+50N	−27B	−42N	=46B	3.0	32.5	35.0	8.50	1679	-20.4
46	Danowski, Krzysztof	1755	POL	−3N	=38B	−28N	+54B	−30N	=49B	−43N	=50B	=45N	3.0	31.0	32.5	7.75	1545	-102.4
47	Kozera, Patryk	1857	POL	−37N	−45B	+48N	=30B	=38N	−34B	=49N	−32B	=44N	3.0	30.0	33.0	10.25	1555	-140.4
48	Telesinski, Sebastian	1676	POL	−4B	−7N	−47B	+55N	−37B	=54N	+51N	=49B	−39N	3.0	29.5	31.0	5.75	1544	-65.6
49	Krasniewski, Grzegorz	1623	POL	−31B	−35N	−44N	F	=45B	=46N	=47B	=48N	+50N	3.0	26.0	26.0	8.50	1670	+14.8
50	Michalak, Leon	1609	POL	−14N	+41B	=24N	−28B	−36N	−45B	=53N	=46N	−49B	2.5	31.5	33.0	8.25	1594	-12.4
51	Siwek, Kornel	1461	POL	−26B	F	−17N	=41B	−33N	−42N	−48B	=55B	+54N	2.0	27.0	27.0	4.00	1498	+9.6
52	Blaszkiewicz, Jakub	1889	POL	−43B	+55N	+42B	−7N	−26B	—	—	—	—	2.0	17.0	18.5	5.00	1641	-64.8
53	Weber, Dorian	1611	POL	−20B	−36N	F	=18B	−32N	−40N	=50B	−29N	=55B	1.5	31.5	31.5	4.75	1516	-37.6
54	Gucwa, Wojciech	1487	POL	−17N	=28B	−18N	−46N	−40B	=48B	=55N	−44B	−51B	1.5	30.5	32.0	4.50	1452	-18.0
55	Boguszewski, Andrzej	1676	POL	−23N	−52B	−41N	−48B	F	−39N	=54B	=51N	=53N	1.5	22.5	22.5	2.50	1423	-103.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Jozwiak, OliwierPOL
+126.4
6.0 pts · #8
2Bartnik, MichalPOL
+92.0
5.5 pts · #16
3Siewruk, DamianPOL
+88.8
4.0 pts · #34

Top rating losers

1Kozera, PatrykPOL
-140.4
3.0 pts · #45
2Grech, KacperPOL
-108.4
5.0 pts · #21
3Boguszewski, AndrzejPOL
-103.2
1.5 pts · #54

Biggest upsets

R2+405 Elo gap
Kuczynski, Piotr1647 beat Grech, Kacper2052
R2+372 Elo gap
Karys, Jakub1622 beat Urych, Krzysztof1994
R1+295 Elo gap
Wieteska, Stanislaw1662 beat Gruca, Karol1957