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
Federations · 1 represented
🇵🇱Poland×8
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 8 · 6 roundsMaciej Koniarski led from R3 onwards, the title was decided early.
Co-leaders
4
2
1
1
1
1
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
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇵🇱Koniarski, Maciej | 0 | * | 1 | 1 | 1 | 1 | — | 1 | 1 | 6.0 | 13.50 | 13.5 | 0.0 | 1731 |
| 3 | 🇵🇱Sypula, Krzysztof | 1685 | 0 | * | ½ | 1 | 1 | ½ | — | — | 3.0 | 7.75 | 16.0 | +12.2 | 1806 |
| 2 | 🇵🇱Jaroszuk, Marcin | 1705 | 0 | ½ | * | — | ½ | 1 | 1 | — | 3.0 | 5.25 | 14.0 | +9.0 | 1798 |
| 4 | 🇵🇱Rybicki, Jan | 1567 | 0 | 0 | — | * | 1 | — | 1 | 1 | 3.0 | 4.50 | 13.5 | +22.6 | 1790 |
| 5 | 🇵🇱Kumik, Michal | 1601 | 0 | 0 | ½ | 0 | * | 1 | 1 | — | 2.5 | 4.00 | 17.5 | 0.0 | 1616 |
| 6 | 🇵🇱Kozera, Konrad | 1556 | — | ½ | 0 | — | 0 | * | 1 | 0 | 1.5 | 2.50 | 10.5 | -11.8 | 1470 |
| 7 | 🇵🇱Przybylik, Mariusz | 1556 | 0 | — | 0 | 0 | 0 | 0 | * | 1 | 1.0 | 1.00 | 17.0 | -24.8 | 1356 |
| 8 | 🇵🇱Moszczynski-Petkowski, Rafal | 1528 | 0 | — | — | 0 | — | 1 | 0 | * | 1.0 | 1.50 | 11.5 | -14.4 | 1438 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Rybicki, JanPOL+22.63.0 pts · #4
- 2Sypula, KrzysztofPOL+12.23.0 pts · #3
- 3Jaroszuk, MarcinPOL+9.03.0 pts · #2
Top rating losers
- 1Przybylik, MariuszPOL-24.81.0 pts · #7
- 2Moszczynski-Petkowski, RafalPOL-14.41.0 pts · #8
- 3Kozera, KonradPOL-11.81.5 pts · #6