CChessStats

Otwarte Mistrzostwa Koszalina w szachach klasycznych 2026 - OPEN A

Open SwissStandard

30 players participated in this 7-round tournament, held from 03 Jan 2026 to 06 Jan 2026 in Koszalin, Poland. 5 titled players. Top 10 Elo average was 2123, and top seed was Mieszko Mis (🇵🇱 POL, IM, 2397).

Mieszko Mis (🇵🇱 POL, IM, 2397) won with 6.0/7, ahead of Filip Luczak (5.0) and Arkadiusz Piotrowski (5.0). Mis won solo starting round 4.

The biggest upset came in round 2: Arkadiusz Piotrowski (1946) beat Filip Luczak (FM, 2380), a +434-point gap.

Location
🇵🇱Koszalin, Poland
Dates
03 Jan 2026 → 06 Jan 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇵🇱IMMieszko Mis2397
Avg top 10
2,123
Participants
30
Titled players · 5
IM×1
FM×3
CM×1
Federations · 1 represented
🇵🇱Poland×30
Top 3

How it unfolded

Top 6 · 7 rounds

IM Mieszko Mis led from R4; +1.0-point edge over the runner-up.

Co-leaders
11
6
3
1
1
1
1
23.55.57R1R2R3R4R5R6R7
Mis6Zareba5Piotrowski5Luczak5Markowski5Makhynia5
R4–R7 · LEAD HELD

IM Mieszko Mis never relinquished the lead after R4; final gap +1.0 over the runner-up.

WIN STREAKS · 3 top finishers

IM Mieszko Mis 4 wins (R1–R4)CM Piotr Zareba 5 wins (R3–R7)Arkadiusz Piotrowski 3 wins (R1–R3)

R4 · LATE SURGE

CM Piotr Zareba was #11 at R4, climbed to #2 over the final stretch.

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1IMMieszko Mis*—
½
½
2CMPiotr Zareba—*
1
—
3Arkadiusz Piotrowski
½
0
*
1
4FMFilip Luczak
½
—
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Mis, MieszkoIM2397POL+15N+7B+4N+9B=3N+10B=2N6.027.530.525.502391+1.0
2Luczak, FilipFM2380POL+20B−3N+7B=4N+16N+9B=1B5.027.530.520.002216-18.4
3Piotrowski, Arkadiusz1946POL+27N+2B+12N=16B=1B+5N−6B5.027.529.019.502245+52.8
4Makhynia, Kostiantyn2005POL+30B+17N−1B=2B+24N=8N+10B5.025.025.014.252162+28.6
5Markowski, DamianFM2085POL−14N+27B+18N+19B+9N−3B+11N5.022.524.015.501983-11.2
6Zareba, PiotrCM2131POL−7N−18B+27N+21B+15N+12B+3N5.022.023.516.002028-19.5
7Gietka, Dariusz1788POL+6B−1N−2N+29B=12N+24B+13N4.525.525.512.752093+51.0
8Zapalski, Franciszek1652POL=21N=23B+15N+12B−10N=4B+17N4.521.524.515.002053+67.4
9Lonski, Aleksander2082POL+18N+14B+19N−1N−5B−2N+15B4.025.528.512.502033-10.8
10Swiderski, Radoslaw2117POL−17B+28N+20B+23N+8B−1N−4N4.024.525.511.501962-22.0
11Trybus, Dominika1874POL−19B=13N=28B+17N+14B+16N−5B4.021.022.011.751856-2.4
12Sokolowski, RyszardFM2082POL+13B+25N−3B−8N=7B−6N+24B3.525.027.510.751874-34.2
13Leszcz, Mateusz1764POL−12N=11B=22N=26N+21B+20N−7B3.521.023.010.501836+12.0
14Bialkowski, Jan1766POL+5B−9N+25B−24B−11N+28N=20B3.521.022.010.001899+45.2
15Soszka, Szymon1831POL−1B+30N−8B+28N−6B+18N−9N3.023.523.54.001837-3.0
16Darowicki, Mariusz1979POL=26N+22B+24N=3N−2B−11BF3.022.524.59.001917-10.0
17Mackiewicz, Lukasz1787POL+10N−4B−23N−11B+27B+26N−8B3.022.524.07.501796-0.4
18Hubner, Michal1740POL−9B+6N−5B+25N−23B−15B+29N3.022.522.57.501882+21.0
19Dybowski, Leon1614POL+11N+21B−9B−5N−20B+25NF3.022.024.59.501918+83.6
20Zarzecki, Dymitr Stanislaw1805POL−2N+29B−10N=22B+19N−13B=14N3.022.022.06.251768-10.4
21Dybowski, Rafal1973POL=8B−19N+26B−6N−13N=22B+28B3.021.022.06.751685-48.2
22Renczynski, Marcel1651POL=24B−16N=13B=20N−25B=21N+26B3.017.519.58.001808+50.0
23Panczyszyn, Szymon1956POL=28B=8N+17B−10B+18N——3.014.515.58.751861-10.2
24Jodlowski, Robert1970POL=22N+26B−16B+14N−4B−7N−12N2.522.524.57.001749-80.0
25Kiecana, Ignacy1832POL+29N−12B−14N−18B+22N−19B=27B2.517.517.53.751626-78.4
26Kupiak, Sylwester1684POL=16B−24N−21N=13B+29N−17B−22N2.018.018.03.251661-7.2
27Ziobrowska, Danuta1637POL−3B−5N−6BF−17N+29B=25N1.520.520.51.251682+2.2
28Gan, Jakub1647POL=23N−10B=11N−15BF−14B−21N1.020.520.53.501635-6.4
29Kozlowski, Dariusz1610POL−25B−20NF−7N−26B−27N−18B0.016.516.50.00947-77.2
30Przerwa, Waldemar1729POL−4N−15B—————0.05.08.00.001118-10.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets