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305th YMCA Summer 2025-B Round 1-6

Double Round-RobinStandard

8 players participated in this 6-round tournament, held from 01 Jul 2025 to 29 Jul 2025 in Warszawa, Poland. Top 10 Elo average was 1400, and top seed was Marcin Jaroszuk (🇵🇱 POL, 1705).

Maciej Koniarski (🇵🇱 POL, 0) won with 6.0/6, ahead of Krzysztof Sypula (3.0) and Marcin Jaroszuk (3.0). Koniarski won solo starting round 3.

Location
🇵🇱Warszawa, Poland
Dates
01 Jul 2025 → 29 Jul 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Double RR · 6 rounds
Top seed
🇵🇱Marcin Jaroszuk1705
Avg top 10
1,400
Participants
8
Federations · 1 represented
🇵🇱Poland×8
Top 3

How it unfolded

Top 8 · 6 rounds

Maciej Koniarski led from R3 onwards, the title was decided early.

Co-leaders
4
2
1
1
1
1
#1#2#4#8R1R2R3R4R5R6
R3–R6 · LEAD HELD

Maciej Koniarski never relinquished the lead after R3; final gap +3.0 over the runner-up.

R5 · DECISIVE LEAD24 Jul

Maciej Koniarski opens a +2.0-point gap over the chasing pack (closest: Krzysztof Sypula); the title is out of reach before R6.

R1 · HEAD-TO-HEAD · WINNER VS 2ND

Maciej Koniarski beat Marcin Jaroszuk (White).

Cross-table

#PlayerElo12345678PtsSBBhΔ EloPerf
1🇵🇱Koniarski, Maciej0*1111—116.013.5013.50.01731
3🇵🇱Sypula, Krzysztof16850*½11½——3.07.7516.0+12.21806
2🇵🇱Jaroszuk, Marcin17050½*—½11—3.05.2514.0+9.01798
4🇵🇱Rybicki, Jan156700—*1—113.04.5013.5+22.61790
5🇵🇱Kumik, Michal160100½0*11—2.54.0017.50.01616
6🇵🇱Kozera, Konrad1556—½0—0*101.52.5010.5-11.81470
7🇵🇱Przybylik, Mariusz15560—0000*11.01.0017.0-24.81356
8🇵🇱Moszczynski-Petkowski, Rafal15280——0—10*1.01.5011.5-14.41438

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers
Top rating losers
305th YMCA Summer 2025-B Round 1-6 — Warszawa, Poland | Chess Tournament Results | ChessStats