309th YMCA Autumn 2025-D Round 11-13
Round-RobinStandard
12 players participated in this 13-round tournament, held from 02 Dec 2025 to 16 Dec 2025 in Warszawa, Poland. Top 10 Elo average was 1532, and top seed was Marcin Dzierzko (🇵🇱 POL, 1703).
Rafal Moszczynski-Petkowski (🇵🇱 POL, 1436) won with 2.0/13, ahead of Wojciech Sloniewski (2.0) and Radoslaw Matyszkiewicz (2.0). Moszczynski-Petkowski won on tie-break after catching the field in the final round.
The biggest upset came in round 11: Wojciech Sloniewski (1436) beat Aisha Martin (1645), a +209-point gap.
Location
🇵🇱Warszawa, Poland
Dates
02 Dec 2025 → 16 Dec 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 13 rounds
Federations · 1 represented
🇵🇱Poland×12
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 12 · 13 roundsTitle race narrowed from 12 co-leaders at R4 to 3 at the finish.
Co-leaders
12
12
12
12
12
12
12
12
12
12
4
1
3
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2 | 🇵🇱Moszczynski-Petkowski, Rafal | 1436 | * | — | — | — | ½ | ½ | — | 1 | — | — | — | — | 2.0 | 1.75 | 3.0 | +24.8 | 1579 |
| 3 | 🇵🇱Sloniewski, Wojciech | 1436 | — | * | — | 0 | — | — | 1 | — | — | — | 1 | — | 2.0 | 0.50 | 2.0 | +35.2 | 1641 |
| 1 | 🇵🇱Matyszkiewicz, Radoslaw | 1558 | — | — | * | — | — | — | ½ | ½ | — | — | — | 1 | 2.0 | 0.50 | 1.0 | +8.2 | 1646 |
| 5 | 🇵🇱Przybylik, Mariusz | 1496 | — | 1 | — | * | — | — | — | — | ½ | — | — | — | 1.5 | 2.25 | 2.5 | +13.6 | 1753 |
| 4 | 🇵🇱Chojnacki, Grzegorz | 1478 | ½ | — | — | — | * | — | — | — | — | — | 1 | — | 1.5 | 1.00 | 2.0 | +13.2 | 1622 |
| 9 | 🇵🇱Mackiewicz, Anna | 1618 | ½ | — | — | — | — | * | — | — | — | ½ | — | — | 1.0 | 1.25 | 2.5 | +0.2 | 1423 |
| 6 | 🇵🇱Martin, Aisha | 1645 | — | 0 | ½ | — | — | — | * | — | — | — | — | — | 0.5 | 1.00 | 4.0 | -35.6 | 1291 |
| 10 | 🇵🇱Florczak, Witold | 1464 | 0 | — | ½ | — | — | — | — | * | — | — | — | — | 0.5 | 1.00 | 4.0 | -8.4 | 1291 |
| 8 | 🇵🇱Dzierzko, Marcin | 1703 | — | — | — | ½ | — | — | — | — | * | — | — | — | 0.5 | 0.75 | 1.5 | -10.8 | 1484 |
| 7 | 🇵🇱Golebiowski, Sebastian | 0 | — | — | — | — | — | ½ | — | — | — | * | — | — | 0.5 | 0.50 | 1.0 | 0.0 | 1418 |
| 12 | 🇵🇱Grad, Krzysztof | 1435 | — | 0 | — | — | 0 | — | — | — | — | — | * | — | 0.0 | 0.00 | 3.5 | -37.6 | 656 |
| 11 | 🇵🇱Dabrowski, Leszek | 1489 | — | — | 0 | — | — | — | — | — | — | — | — | * | 0.0 | 0.00 | 2.0 | -8.2 | 745 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Sloniewski, WojciechPOL+35.22.0 pts · #3
- 2Moszczynski-Petkowski, RafalPOL+24.82.0 pts · #2
- 3Przybylik, MariuszPOL+13.61.5 pts · #5
Top rating losers
- 1Grad, KrzysztofPOL-37.60.0 pts · #12
- 2Martin, AishaPOL-35.60.5 pts · #6
- 3Dzierzko, MarcinPOL-10.80.5 pts · #8
Biggest upsets
- R11+209 Elo gap