CChessStats

Otwarte Mistrzostwa Gminy Czarna Bialostocka w Szachach, Grupa A o mala norme na I i kandydata

Open SwissStandard

15 players participated in this 5-round tournament, held from 22 Nov 2025 to 23 Nov 2025 in Czarna Bialostocka, Poland. Top 10 Elo average was 1727, and top seed was Hubert Backiel (🇵🇱 POL, 2259).

Bartosz Kotarski (🇵🇱 POL, 2012) won with 4.5/5, ahead of Hubert Backiel (4.5) and Kamil Jasiulewicz (3.0). Kotarski shared the lead from round 1, winning on tie-break.

The biggest upset came in round 2: Ignacy Choinski (1458) beat Jan Kozlowski (1562), a +104-point gap.

Location
🇵🇱Czarna Bialostocka, Poland
Dates
22 Nov 2025 → 23 Nov 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇵🇱Hubert Backiel2259
Avg top 10
1,727
Participants
15
Federations · 1 represented
🇵🇱Poland×15
Top 3

How it unfolded

Top 6 · 5 rounds

Tight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 2 at the finish.

Co-leaders
6
2
3
2
2
1.52.545R1R2R3R4R5
Kotarski4.5Backiel4.5Jasiulewicz3Akacin3Wasilewicz3Roszkowski3
R5 · TIEBREAK CLUSTER

2 players finish on 4.5/5. Kotarski takes the title on Buchholz Cut1 (13.0).

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Bartosz Kotarski drew with Hubert Backiel (White).

R1–R5 · UNBEATEN

Bartosz Kotarski went unbeaten across 5 games (R1–R5).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Bartosz Kotarski*
½
—
1
2Hubert Backiel
½
*——
3Kamil Jasiulewicz——*
½
4Jakub Akacin
0
—
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Kotarski, Bartosz2012POL+4B+8N=2B+6N+7B4.513.015.513.252141+14.6
2Backiel, Hubert2259POL+11N+13B=1N+7B+8N4.511.512.510.252234-1.4
3Jasiulewicz, Kamil1855POL=6N=14B+5B=8N=4B3.011.512.07.501651-45.2
4Akacin, Jakub1480POL−1N+15B+13N=5B=3N3.011.511.54.001659+20.4
5Wasilewicz, Wawrzyniec1606POL+12N=7B−3N=4N+10B3.010.511.55.751557-10.0
6Roszkowski, Filip1476POL=3B=10N+12B−1B+13N3.010.511.54.501677+13.2
7Pilka, Lukasz1709POL+9B=5N+10B−2N−1N2.514.516.56.001725-2.2
8Puszko, Szymon1682POL+15N−1B+9N=3B−2B2.514.514.54.001777+12.0
9Choinski, Ignacy1458POL−7N+11B−8B=10N+12N2.59.010.04.001508-0.4
10Gryszko, Hubert0POL+14N=6B−7N=9B−5N2.011.011.53.2515190.0
11Kozlowski, Jan1562POL−2B−9N+14N−12B+15B2.08.58.50.501561+4.0
12Nartowicz, Marian0POL−5BF−6N+11N−9B1.010.510.52.0013360.0
13Wawiernia, Emil0POLF−2N−4B+15N−6B1.010.510.50.009400.0
14Wnorowski, Lukasz1628POL−10B=3N−11BF—0.57.07.01.501491-16.0
15Pacewicz, Lech0POL−8B−4NF−13B−11N0.08.58.50.007560.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets