302nd YMCA Spring 2025-C Round 7-11
11 players participated in this 11-round tournament, held from 04 Jun 2025 to 25 Jun 2025 in Warszawa, Poland. Top 10 Elo average was 1657, and top seed was Antoni Szukalski (🇵🇱 POL, 1703).
Marcin Jaroszuk (🇵🇱 POL, 1693) won with 4.0/11, ahead of Lukasz Ossolinski (3.0) and Antoni Szukalski (2.5). Jaroszuk shared the lead from round 9 and broke clear in the final round.
The biggest upset came in round 10: Janusz Wiktorowski (1570) beat Krzysztof Sypula (1683), a +113-point gap.
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How it unfolded
Top 11 · 11 roundsMarcin Jaroszuk led from R11 onwards, the runner-up race stayed tight. Title race converged from 11 co-leaders at R4 to 1 by R11.
Marcin Jaroszuk takes the sole lead (4.0/11).
Marcin Jaroszuk opens a +1.5-point gap over the chasing pack (closest: Antoni Szukalski); the title is out of reach before R11.
Marcin Jaroszuk drew with Lukasz Ossolinski (Black).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇵🇱Jaroszuk, Marcin | 1693 | * | ½ | 1 | 1 | — | — | 1 | — | — | ½ | — | 4.0 | 9.25 | 11.5 | +28.2 | 1904 |
| 2 | 🇵🇱Ossolinski, Lukasz | 1567 | ½ | * | — | — | 1 | ½ | — | — | — | — | 1 | 3.0 | 5.00 | 8.0 | +29.0 | 1821 |
| 4 | 🇵🇱Szukalski, Antoni | 1703 | 0 | — | * | — | 1 | 0 | — | — | ½ | — | 1 | 2.5 | 2.75 | 9.5 | -13.0 | 1629 |
| 3 | 🇵🇱Glowacki, Mateusz | 1697 | 0 | — | — | * | 1 | — | — | ½ | — | — | 1 | 2.5 | 3.00 | 8.0 | +2.6 | 1719 |
| 5 | 🇵🇱Wiktorowski, Janusz | 1570 | — | 0 | 0 | 0 | * | 1 | 1 | — | — | — | — | 2.0 | 4.00 | 12.0 | +4.8 | 1598 |
| 8 | 🇵🇱Sypula, Krzysztof | 1683 | — | ½ | 1 | — | 0 | * | — | — | ½ | — | — | 2.0 | 4.75 | 9.0 | -8.4 | 1615 |
| 6 | 🇵🇱Marczukiewicz, Slawomir | 1669 | 0 | — | — | — | 0 | — | * | 1 | — | — | 1 | 2.0 | 2.00 | 8.0 | -7.8 | 1624 |
| 7 | 🇵🇱Chudyk, Mateusz | 1680 | — | — | — | ½ | — | — | 0 | * | 1 | ½ | — | 2.0 | 3.50 | 7.5 | -0.6 | 1670 |
| 9 | 🇵🇱Mueck, Piotr | 1606 | — | — | ½ | — | — | ½ | — | 0 | * | ½ | — | 1.5 | 3.00 | 8.0 | -3.8 | 1602 |
| 10 | 🇵🇱Milczak, Piotr | 1671 | ½ | — | — | — | — | — | — | ½ | ½ | * | — | 1.5 | 3.75 | 7.5 | 0.0 | 1662 |
| 11 | 🇵🇱Matyszkiewicz, Radoslaw | 1596 | — | 0 | 0 | 0 | — | — | 0 | — | — | — | * | 0.0 | 0.00 | 10.0 | -31.0 | 864 |
Key insights
Biggest movers and upsets — the story behind the numbers.
- 1Ossolinski, LukaszPOL+29.03.0 pts · #2
- 2Jaroszuk, MarcinPOL+28.24.0 pts · #1
- 3Wiktorowski, JanuszPOL+4.82.0 pts · #5
- 1Matyszkiewicz, RadoslawPOL-31.00.0 pts · #11
- 2Szukalski, AntoniPOL-13.02.5 pts · #4
- 3Sypula, KrzysztofPOL-8.42.0 pts · #8
- R10+113 Elo gap