CChessStats

Chess Butterfly - Turniej o Puchar Dyrektora Butterfly School - Grupa A

Open SwissStandard

18 players participated in this 5-round tournament, held from 11 Apr 2026 to 12 Apr 2026 in Torun, Poland. Top 10 Elo average was 1745, and top seed was Norbert Kapela (🇵🇱 POL, 1898).

Wiktor Weber (🇵🇱 POL, 1879) won with 4.5/5, ahead of Tomasz Grochulski (3.5) and Krzysztof Grochulski (3.5). Weber won solo starting round 2.

The biggest upset came in round 5: Emil Bielicki (1493) beat Radoslaw Stanczak (1637), a +144-point gap.

Location
🇵🇱Torun, Poland
Dates
11 Apr 2026 → 12 Apr 2026
Time control
Standard: 60 minutes with 30 seconds increment from move 1
System
Swiss · 5 rounds
Top seed
🇵🇱Norbert Kapela1898
Avg top 10
1,745
Participants
18
Federations · 1 represented
🇵🇱Poland×18
Top 3

How it unfolded

Top 6 · 5 rounds

Wiktor Weber led from R2; +1.0-point edge over the runner-up.

Co-leaders
6
1
1
1
1
1.52.545R1R2R3R4R5
Weber4.5Grochulski3.5Grochulski3.5Banach3Kosicki3Muzal3
R2–R5 · LEAD HELD

Wiktor Weber never relinquished the lead after R2; final gap +1.0 over the runner-up.

R5 · HEAD-TO-HEAD · WINNER VS 2ND

Wiktor Weber drew with Krzysztof Grochulski (Black).

R1–R4 · WIN STREAK

Wiktor Weber won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Wiktor Weber*
½
1
—
2Krzysztof Grochulski
½
*——
3Tomasz Grochulski
0
—*—
4Bartosz Banach———*

Grille américaine

#PlayerEloFedR1R2R3R4R5PtsBu C1BuSBPerfΔ
1Weber, Wiktor1879POL+13N+9B+10N+2B=3N4.512.014.012.252104+45.2
2Grochulski, Tomasz1827POL+17B=4N+5B−1N+8B3.513.014.58.501841+6.0
3Grochulski, Krzysztof1729POL=5B+11N=8B+9N=1B3.512.515.010.001811+11.2
4Kosicki, Jakub1698POL+15N=2B−6N+13B=7N3.011.513.57.251710+4.0
5Bartczak, Lukasz1573POL=3N+14B−2N=10B+13N3.011.513.57.001790+27.4
6Muzal, Konrad1705POL=11B=12N+4B=8N=9B3.010.513.08.001725+3.4
7Banach, Bartosz1575POL−8B=16N+11B+14N=4B3.010.011.56.751690+31.6
8Joachimiak, Adam1728POL+7N=10B=3N=6B−2N2.513.015.57.501747+5.2
9Dybowski, Leon1637POL+18B−1N+15B−3B=6N2.513.013.03.501644+1.6
10Kapela, Norbert1898POL+16B=8N−1B=5N=12B2.512.514.05.501706-47.2
11Bielicki, Emil1493POL=6N−3B−7N+18B+16N2.511.011.03.001614+31.2
12Palacz, Franciszek1711POL=14N=6B−13N+17B=10N2.59.511.05.251664-12.8
13Stando, Antoni1601POL−1B+18N+12B−4N−5B2.013.013.02.501585-6.4
14Radkowski, Michal1533POL=12B−5N+16B−7B=17N2.010.011.53.501544+1.2
15Gryczewski, Tomasz1480POL−4B+17N−9N−16B+18N2.08.58.51.501524+5.2
16Stanczak, Radoslaw1637POL−10N=7B−14N+15N−11B1.510.012.03.501447-52.4
17Wardzala, Mateusz1583POL−2N−15B+18N−12N=14B1.510.010.01.001446-38.0
18Gesicki, Zbigniew1426POL−9N−13B−17B−11N−15B0.09.010.50.00759-64.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets