CChessStats

Mistrzostwa Kielc w szachach klasycznych na rok 2026 - grupa B

Open SwissStandard

24 players participated in this 7-round tournament, held from 07 Feb 2026 to 08 Feb 2026 in Kielce, Poland. Top 10 Elo average was 1648, and top seed was Nataniel Dorowski (🇵🇱 POL, 1779).

Piotr Kowalczyk (🇵🇱 POL, 1733) won with 6.0/7, ahead of Nataniel Dorowski (5.5) and Mateusz Mucha (5.0). Kowalczyk shared the lead from round 6 and broke clear in the final round.

The biggest upset came in round 1: Aleksandra Czekaj (1460) beat Gustaw Szczukiewicz (1680), a +220-point gap.

Location
🇵🇱Kielce, Poland
Dates
07 Feb 2026 → 08 Feb 2026
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇵🇱Nataniel Dorowski1779
Avg top 10
1,648
Participants
24
Federations · 1 represented
🇵🇱Poland×20
Top 3

How it unfolded

Top 6 · 7 rounds

Piotr Kowalczyk led from R4; +0.5-point edge over the runner-up.

Co-leaders
12
5
2
1
1
2
1
23.55.57R1R2R3R4R5R6R7Dorowski takes leadKowalczyk takes lead
Kowalczyk6Dorowski5.5Mucha5Sokol5Karys4.5Mieszczankowski4.5
R5 · LEADER CHANGE08 Feb

Nataniel Dorowski takes the sole lead (4.5/5).

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Piotr Kowalczyk lost to Nataniel Dorowski (Black).

R1–R4 · WIN STREAK

Piotr Kowalczyk won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Piotr Kowalczyk*
0
——
2Nataniel Dorowski
1
*
½
—
3Mateusz Mucha—
½
*
1
4Adrian Sokol——
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Kowalczyk, Piotr1733POL+9N+14B+5N+11B−2N+7B+6N6.026.029.023.501901+49.6
2Dorowski, Nataniel1779POL+15B+8N=7B+5N+1B=6N=3B5.528.031.024.251842+19.6
3Mucha, Mateusz1622POL+17B−11N+4B=7N+19B+8N=2N5.025.027.519.251656+9.2
4Sokol, Adrian1501POL+24N−5B−3N+23B+12N+19B+7N5.020.520.511.001609+24.0
5Karys, Jakub1663POL+18B+4N−1B−2B+15N+11N=8B4.527.030.016.501664+4.0
6Mieszczankowski, Adam1589POL+21N=13B=16N+12B+14N=2B−1B4.524.526.514.501677+29.2
7Kaniszewski, Olaf1632POL+20N+12B=2N=3B+11N−1N−4B4.028.531.014.751602-9.6
8Szczukiewicz, Wojciech1549POL+23N−2B+20N=14B+9N−3B=5N4.024.525.511.251546-2.8
9Wolczynski, Antoni1465POL−1B=19N+17B+13N−8B+16N=10N4.023.526.012.751616+38.8
10Szczukiewicz, Gustaw1680POL−11B=17N−19B+18N+13B+14N=9B4.020.022.513.001620-10.4
11Czekaj, Aleksandra1460POL+10N+3B+13N−1N−7B−5B=12N3.527.030.514.251613+55.6
12Walas, Leon1518POL+22B−7N+18B−6N−4B+21N=11B3.522.024.08.751370-39.6
13Stelmach, Tomasz1458POL+16B=6N−11B−9B−10N+20B+19N3.521.524.010.251422-10.8
14Karys, Malgorzata1558POL+19B−1N+15B=8N−6B−10B=18N3.024.527.09.001450-34.8
15Kasinski, Jan1493POL−2N+23B−14N+20B−5B=18N=16B3.021.522.56.501378-29.2
16Jamrozek, Jan1673POL−13N+21B=6B−19N+22N−9B=15N3.019.521.57.751309-75.2
17Szczukiewicz, Alicja0POL−3N=10B−9N=21B=20N=22B+24N3.019.519.55.2513120.0
18Ksel, Patryk1417POL−5N+24B−12N−10B+23N=15B=14B3.019.019.04.001340-17.6
19Klimek-Szumielewicz, Oskar0POL−14N=9B+10N+16B−3N−4N−13B2.524.527.59.0014620.0
20Sokol, Zofia0POL−7B+22N−8B−15N=17B−13N+21B2.519.521.55.507340.0
21FIDE 911694370—−6B−16N=22B=17N+24B−12B−20N2.018.518.52.507940.0
22FIDE 5450216000—−12N−20B=21N+24N−16B=17NF2.014.014.02.507960.0
23FIDE 5450674060—−8B−15N+24B−4N−18B——1.015.015.00.006900.0
24FIDE 5450258780—−4B−18N−23N−22B−21NF−17B0.016.016.00.006590.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets