CChessStats

Dziesiate Urodziny Szachowej Dwojki - grupa B1

Open SwissStandard

27 players participated in this 7-round tournament, held from 11 Apr 2026 to 12 Apr 2026 in Grodzisk Mazowiecki, Poland. Top 10 Elo average was 1509, and top seed was Kacper Madej (🇵🇱 POL, 1600).

Szymon Andruszkiewicz (🇵🇱 POL, 1596) won with 5.5/7, ahead of Jakub Gnatowicz (5.5) and Bohdan Bernatowicz (5.0). Andruszkiewicz shared the lead from round 1, winning on tie-break.

The biggest upset came in round 1: Adam Malecki (1400) beat Kacper Madej (1600), a +200-point gap.

Location
🇵🇱Grodzisk Mazowiecki, Poland
Dates
11 Apr 2026 → 12 Apr 2026
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇵🇱Kacper Madej1600
Avg top 10
1,509
Participants
27
Federations · 1 represented
🇵🇱Poland×26
Top 3

How it unfolded

Top 6 · 7 rounds

Tight race until R7; 2 players tied at 5.5/7, decided on Buchholz.

Co-leaders
10
4
2
1
1
2
2
23.55.57R1R2R3R4R5R6R7
Gnatowicz5.5Andruszkiewicz5.5Bernatowicz5Kwasiborska5Banasiak4.5Dul4.5— ex-leaders:Andruszkiewiczled R4–R5, #11
R7 · TIEBREAK CLUSTER

2 players finish on 5.5/7. Andruszkiewicz takes the title on Buchholz Cut1 (27.0).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

Jakub Gnatowicz beat Szymon Andruszkiewicz (White).

WIN STREAKS · 2 top finishers

Jakub Gnatowicz 5 wins (R2–R6)Szymon Andruszkiewicz 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Jakub Gnatowicz*
1
½
—
2Szymon Andruszkiewicz
0
*
1
—
3Bohdan Bernatowicz
½
0
*
½
4Zofia Kwasiborska——
½
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Andruszkiewicz, Szymon1596POL+19B+18N+3B+5N+7B−2N=8B5.527.030.022.251623+4.0
2Gnatowicz, Jakub1539POL−6N+26B+15N+13B+9N+1B=3N5.525.526.519.502295+52.4
3Bernatowicz, Bohdan0POL+12N+17B−1N=4B+13N+5N=2B5.027.530.519.7515330.0
4Kwasiborska, Zofia1434POL=16B+8N=6B=3N+10N=12B+11B5.025.528.520.501633+20.8
5Banasiak, Adam0POL+21B+15N+10N−1B+12N−3B=7N4.525.528.515.7515400.0
6Owczarzak, Liliana0POL+2B=?N=4N−7B=20N+13B+12N4.525.025.016.5015110.0
7Rozanski, Ignacy1536POL=24B=9N+18B+6N−1N+16B=5B4.524.526.515.751481-8.4
8Dul, Leonard0POL=22N−4B+26N=17B+15N+9B=1N4.523.024.013.5014980.0
9Wilczynski, Nikodem1426POL=13N=7B+17N+25N−2B−8N+19B4.024.026.012.001628+43.6
10Malecki, Adam1400POL+14B+25N−5B+21N−4B−11N+16B4.023.025.011.501688+58.0
11Grochowina, Bartlomiej0POL−18N−12B+27N+22B+17N+10B−4N4.021.021.09.5014470.0
12Banasiuk, Mateusz1467POL−3B+11N+19B+16N−5B=4N−6B3.526.029.012.501434-2.0
13Banasiuk, Filip0POL=9B+24N+?B−2N−3B−6N+26N3.522.022.05.0014810.0
14Madej, Kacper1600POL−10N−20B−23N+27B+24N=15B+22N3.517.017.06.001433-26.4
15Kucharski, Wojciech1433POL+23N−5B−2B+19N−8B=14N=21B3.024.026.58.751392-11.6
16Starus, Dominik0POL=4N=22B+24N−12B+21B−7N−10N3.022.524.58.7513220.0
17Chrostowska, Zofia1512POL+26B−3N−9B=8N−11B+24B=20N3.022.523.56.75623-25.2
18Ladon, Jan1416POL+11B−1B−7N−20B+26N−22B+23N3.022.023.07.50719-44.4
19Gnatowicz, Szymon0POL−1N+23B−12N−15B+27N+20B−9N3.021.521.55.506890.0
20Kozlowska, Kamila0POL−25B+14N−21B+18N=6B−19N=17B3.020.022.010.2514970.0
21Rusek, Franciszek1442POL−5N+27B+20N−10B−16N=23B=15N3.020.020.05.751244-16.8
22Grzejszczak, Gabriela1426POL=8B=16N−25B−11N=23B+18N−14B2.520.522.58.001394-5.2
23Kubczak, Ignacy0POL−15B−19N+14B=24B=22N=21N−18B2.518.020.07.2513920.0
24Zbrzezna, Maja0POL=7N−13B−16B=23N−14B−17N+27B2.020.020.03.5012770.0
25Grzywacz, Stanislaw1532POL+20N−10B+22N−9B———2.011.013.55.501295-38.8
26FIDE 911641920—−17N−2N−8BF−18B+27N−13B1.019.519.50.006950.0
27Rozycki, Marceli0POL−?B−21N−11B−14N−19B−26B−24N0.016.516.50.006960.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets