CChessStats

Zielony Mat Grupa C

Open SwissStandard

21 players participated in this 7-round tournament, held from 05 Jul 2025 to 12 Jul 2025 in Zielona Gora, Poland. 2 federations represented. Top 10 Elo average was 1530, and top seed was Jakub Stys (🇵🇱 POL, 1642).

Piotr Feszyk (🇵🇱 POL, 0) won with 6.5/7, ahead of Cezary Pilarski (5.0) and Marcin Zapotoczny (5.0). Feszyk won solo starting round 3.

The biggest upset came in round 5: Lukasz Siera (1470) beat Jakub Stys (1642), a +172-point gap.

Location
🇵🇱Zielona Gora, Poland
Dates
05 Jul 2025 → 12 Jul 2025
Time control
Standard: 30 minutes for game with 30 seconds increment from move 1
System
Swiss · 7 rounds
Top seed
🇵🇱Jakub Stys1642
Avg top 10
1,530
Participants
21
Federations · 2 represented
🇵🇱Poland×20
🇺🇦Ukraine×1
Top 3

How it unfolded

Top 6 · 7 rounds

Piotr Feszyk led from R3; +1.5-point edge over the runner-up.

Co-leaders
10
4
1
1
1
1
1
23.55.57R1R2R3R4R5R6R7
Feszyk6.5Zapotoczny5Pilarski5Chumak4.5Pawelczyk4Siera4
R3–R7 · LEAD HELD

Piotr Feszyk never relinquished the lead after R3; final gap +1.5 over the runner-up.

R3 · HEAD-TO-HEAD · WINNER VS 2ND

Piotr Feszyk beat Marcin Zapotoczny (White).

WIN STREAKS · 2 top finishers

Piotr Feszyk 5 wins (R1–R5)Marcin Zapotoczny 4 wins (R4–R7)

Key matchups · top 4

Head-to-head between the four finishers
Player1234
1Piotr Feszyk*
1
½
1
2Marcin Zapotoczny
0
*—
1
3Cezary Pilarski
½
—*
0
4Oleksii Chumak
0
0
1
*

Grille américaine

#PlayerEloFedR1R2R3R4R5R6R7PtsBu C1BuSBPerfΔ
1Feszyk, Piotr0POL+19B+9N+3B+10N+4B=2N+5B6.525.526.023.5016150.0
2Pilarski, Cezary0POL+17B+19N=5B−4N+10B=1B+8N5.025.025.515.7515890.0
3Zapotoczny, Marcin0POLF+18B−1N+5N+9B+4N+6B5.024.024.017.5015950.0
4Chumak, Oleksii0UKR+12N+13B=7N+2B−1N−3B+10B4.527.530.517.0016170.0
5Pawelczyk, Krzysztof1618POL+21N+6B=2N−3B=11N+9B−1N4.027.527.511.751734+14.8
6Siera, Lukasz1470POL+15B−5N−9B+20N+7N+11B−3N4.022.523.010.501543+15.6
7Stys, Jakub1642POL+11B=10N=4B−9N−6B+14N+15B4.022.024.513.001379-56.8
8Jeniec, Andrzej0POL−9B=17N+14B=11N+13N+16B−2B4.020.523.011.5014750.0
9Karczewski, Lukasz1500POL+8N−1B+6N+7B−3N−5N=11B3.527.531.013.751632+28.4
10Dudzinski, Gracjan1459POL+16N=7B+13N−1B−2N+12B−4N3.526.529.011.001854+55.6
11Szymonowicz, Lena1419POL−7N+15B+18N=8B=5B−6N=9N3.522.023.59.751469+12.8
12Strochalska, Antonina1598POL−4B−14N+20B=15N+18B−10N+19B3.515.516.03.751624+5.6
13Szymanski-Uniejewski, Tytus1517POL+20B−4N−10B+14N−8B−15N+18B3.019.019.55.001479-3.6
14Michalak, Dawid0POL−18N+12B−8N−13B+19N−7B+16N3.018.519.06.5014800.0
15Radczyc, Dominik0POL−6N−11N+19B=12B−16N+13B−7N2.520.521.05.2514710.0
16Urbanczyk, Dawid0POL−10B=20N−17B+19N+15B−8N−14B2.516.016.53.2513740.0
17Mironik, Pawel1474POL−2N=8B+16N+18B———2.511.513.06.002275+10.0
18Dzielakowski, Szymon1477POL+14B−3N−11B−17N−12N=19B−13N1.520.521.03.251140-71.6
19Januzik, Hubert1540POL−1N−2B−15N−16B−14B=18N−12N0.523.024.50.751339-20.8
20Ford, Maximilian0POL−13N=16B−12N−6B———0.510.513.01.257240.0
21Bartusch, Michal0POL−5B——————0.00.04.00.008190.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
Biggest upsets