CChessStats

II Otwarty Ogolnopolski Turniej Szachowy OPEN COPPER - Grupa A

Open SwissStandard

16 players participated in this 5-round tournament, held from 13 Jun 2026 to 14 Jun 2026 in Legnica, Poland. 1 titled players. Top 10 Elo average was 1879, and top seed was Piotr Sabuk (🇵🇱 POL, IM, 2324).

Piotr Sabuk (🇵🇱 POL, IM, 2324) won with 5.0/5, ahead of Mateusz Derejczyk (4.0) and Wojciech Nagly (3.5). Sabuk won solo starting round 4.

The biggest upset came in round 2: Miroslaw Kopinski (1637) beat Marek Lasok (2024), a +387-point gap.

Location
🇵🇱Legnica, Poland
Dates
13 Jun 2026 → 14 Jun 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇵🇱IMPiotr Sabuk2324
Avg top 10
1,879
Participants
16
Titled players · 1
IM×1
Federations · 1 represented
🇵🇱Poland×16
Top 3

How it unfolded

Top 6 · 5 rounds

IM Piotr Sabuk led from R4; +1.0-point edge over the runner-up.

Co-leaders
8
4
2
1
1
1.52.545R1R2R3R4R5
Sabuk5Derejczyk4Nagly3.5Kowalczyk3Kata3Gabas3
R4–R5 · LEAD HELD

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

R3 · HEAD-TO-HEAD · WINNER VS 2ND

IM Piotr Sabuk beat Mateusz Derejczyk (White).

WIN STREAKS · 2 top finishers

IM Piotr Sabuk 5 wins (R1–R5)Wojciech Nagly 3 wins (R1–R3)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1IMPiotr Sabuk*
1
1
—
2Mateusz Derejczyk
0
*—
1
3Wojciech Nagly
0
—*
1
4Cyprian Kowalczyk—
0
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Sabuk, PiotrIM2324POL+12B+8N+2B+3N+5B5.013.014.514.502800+7.2
2Derejczyk, Mateusz1940POL+16N+6B−1N+9B+4N4.013.013.08.002065+32.0
3Nagly, Wojciech2189POL+13N+4B+9N−1B=8N3.512.514.07.752088-14.4
4Kowalczyk, Cyprian1907POL+10B−3N+11B+7N−2B3.012.514.57.001802-14.8
5Lasok, Marek2024POL+15B−9N+6B+8N−1N3.012.514.07.001910-10.6
6Kata, Slawomir1718POL+11B−2N−5N+13B+14N3.010.512.05.001754+10.4
7Gabas, Karol1472POL−8B+12N+10B−4B+9N3.09.511.05.501771+71.6
8Owad, Jakub1885POL+7N−1B+14N−5B=3B2.514.516.06.251894+5.2
9Kopinski, Miroslaw1637POL+14N+5B−3B−2N−7B2.013.515.04.501713+4.6
10Szymonowicz, Lena1487POL−4N=13B−7N=15N+16B2.09.09.01.501510+0.8
11Marek, Dawid1457POL−6N+16B−4N=14B=12B2.09.09.01.501558+20.4
12Czuba, Tadeusz1628POL−1N−7BF+16B=11N1.511.511.51.001526-28.0
13Galuszka, Michal1538POL−3B=10NF−6N+15B1.510.011.52.501578+2.4
14Sabuk, Jan1452POL−9B+15N−8B=11N−6B1.59.511.02.501487+1.6
15Lisak, Jerzy1518POL−5N−14B+16N=10B−13N1.58.08.01.001429-14.2
16Krasicki, Boguslaw1493POL−2B−11N−15B−12N−10N0.09.511.00.00797-38.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets