CChessStats

Witaj Lato 2025 - Open

Open SwissStandard

20 players participated in this 5-round tournament, held from 21 Jun 2025 to 22 Jun 2025 in Zabrze, Poland. Top 10 Elo average was 1797, and top seed was Jakub Wieczorek (🇵🇱 POL, 1939).

Wojciech Rojek (🇵🇱 POL, 1783) won with 4.5/5, ahead of Marek Wojtowicz (4.0) and Piotr Spyra (3.5). Rojek shared the lead from round 4 and broke clear in the final round.

The biggest upset came in round 3: Dariusz Klopotowski (1610) beat Jaroslaw Pietrucha (1834), a +224-point gap.

Location
🇵🇱Zabrze, Poland
Dates
21 Jun 2025 → 22 Jun 2025
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇵🇱Jakub Wieczorek1939
Avg top 10
1,797
Participants
20
Federations · 1 represented
🇵🇱Poland×20
Top 3

How it unfolded

Top 6 · 5 rounds

Wojciech Rojek led from R5; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R5.

Co-leaders
9
3
1
2
1
1.52.545R1R2R3R4R5Rojek takes lead
Rojek4.5Wojtowicz4Spyra3.5Kisielinski3.5Zak3.5Wieczorek3
R5 · LEADER CHANGE22 Jun

Wojciech Rojek takes the sole lead (4.5/5).

R4 · HEAD-TO-HEAD · WINNER VS 2ND

Wojciech Rojek beat Marek Wojtowicz (Black).

R1–R3 · WIN STREAK

Marek Wojtowicz won 3 in a row (R1–R3).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Wojciech Rojek*
1
½
—
2Marek Wojtowicz
0
*
1
—
3Piotr Spyra
½
0
*
1
4Stanislaw Kisielinski——
0
*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Rojek, Wojciech1783POL+9B+7N=3B+2N+6B4.513.516.014.252129+74.8
2Wojtowicz, Marek1780POL+15N+8B+16N−1B+3B4.013.014.510.001971+24.4
3Spyra, Piotr1884POL+10N+5B=1N+8B−2N3.515.017.511.251925+6.0
4Zak, Rafal1790POL+12N=16B=6N=5B+10N3.511.513.09.001800+2.2
5Kisielinski, Stanislaw1728POL+19B−3N+17B=4N+9B3.511.011.05.751830+28.0
6Balon, Adam1778POL=17B+11N=4B+7N−1N3.013.515.08.001781+2.0
7Ciupek, Oskar1764POL+13N−1B+12N−6B+17N3.012.514.06.501735-6.0
8Wieczorek, Jakub1939POL+20B−2N+11B−3N+14B3.012.012.04.501799-16.0
9Klopotowski, Dariusz1610POL−1N=10B+18N+16B−5N2.512.012.53.251696+11.2
10Kotasinski, Szymon1647POL−3B=9N+20B+14N−4B2.511.511.53.251725+19.2
11Wisniowski, Marcel1621POL+18N−6B−8N+15B=13N2.510.511.03.751735+25.6
12Kruszynski, Lukasz1611POL−4B+19N−7B=17N+16B2.59.59.52.251632+2.6
13Cichocki, Jakub1561POL−7B+20N−14B+19N=11B2.57.57.51.251655+24.8
14Cichocki, Aleksander1689POL−16N+15B+13N−10B−8N2.010.011.54.501568-34.8
15Ziolkowski, Szymon1603POL−2B−14N+19B−11N+20N2.08.58.50.001587+5.2
16Piatek, Rafal1488POL+14B=4N−2B−9N−12N1.512.514.53.751548+6.4
17Pajer, Irena1580POL=6N=18B−5N=12B−7B1.512.012.53.001594+2.0
18Pietrucha, Jaroslaw1834POL−11B=17N−9B——0.55.06.50.751333-37.0
19Gola, Wojciech1543POL−5N−12B−15N−13BF0.010.510.50.00816-64.4
20Luczyna, Tadeusz1652POL−8N−13B−10NF−15B0.010.010.00.00879-76.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets