300th YMCA Spring 2025-A Round 7-11
Round-RobinStandard
11 players participated in this 11-round tournament, held from 02 Jun 2025 to 27 Jun 2025 in Warszawa, Poland. Top 10 Elo average was 1986, and top seed was Bartlomiej Rozycki (🇵🇱 POL, 2113).
Michal Polak (🇵🇱 POL, 2031) won with 3.0/11, ahead of Cezary Borowy (2.5) and Piotr Flis (2.5). Polak shared the lead from round 10 and broke clear in the final round.
The biggest upset came in round 7: Jerzy Mazurek (1895) beat Bartlomiej Rozycki (2113), a +218-point gap.
Location
🇵🇱Warszawa, Poland
Dates
02 Jun 2025 → 27 Jun 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 11 rounds
Federations · 1 represented
🇵🇱Poland×11
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 11 · 11 roundsMichal Polak led from R11 onwards, the runner-up race stayed tight. Title race converged from 11 co-leaders at R4 to 1 by R11.
Co-leaders
11
11
11
11
11
11
4
1
1
3
1
Polak#1Borowy#2Flis#3Mazurek#4Moskwinski#5Choroszej#6Rozycki#7Lewandrowski#8Pajak#9Sternik#10Korsun#11
R11 · LEADER CHANGE27 Jun
Michal Polak takes the sole lead (3.0/11).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇵🇱Polak, Michal | 2031 | * | — | ½ | ½ | 1 | — | — | 1 | — | — | — | 3.0 | 5.25 | 7.5 | +17.8 | 2190 |
| 2 | 🇵🇱Borowy, Cezary | 2027 | — | * | — | ½ | — | 1 | 0 | 1 | — | — | — | 2.5 | 4.00 | 7.0 | +1.4 | 2067 |
| 3 | 🇵🇱Flis, Piotr | 2072 | ½ | — | * | 1 | — | — | — | 1 | — | — | — | 2.5 | 4.50 | 6.0 | +11.4 | 2237 |
| 5 | 🇵🇱Moskwinski, Marek | 1890 | ½ | ½ | 0 | * | 0 | — | — | — | 1 | — | — | 2.0 | 3.25 | 10.5 | +6.8 | 1953 |
| 6 | 🇵🇱Choroszej, Aleksander | 2033 | 0 | — | — | 1 | * | 1 | — | 0 | — | — | — | 2.0 | 4.00 | 8.0 | -10.8 | 1947 |
| 4 | 🇵🇱Mazurek, Jerzy | 1895 | — | 0 | — | — | 0 | * | 1 | — | — | — | 1 | 2.0 | 2.00 | 6.5 | +14.8 | 2037 |
| 7 | 🇵🇱Rozycki, Bartlomiej | 2113 | — | 1 | — | — | — | 0 | * | — | — | — | 1 | 2.0 | 2.50 | 4.5 | -2.2 | 2085 |
| 8 | 🇵🇱Lewandrowski, Tomasz | 1992 | 0 | 0 | 0 | — | 1 | — | — | * | — | — | — | 1.0 | 2.00 | 10.0 | -12.0 | 1854 |
| 9 | 🇵🇱Pajak, Jakub | 1909 | — | — | — | 0 | — | — | — | — | * | ½ | — | 0.5 | 0.25 | 2.5 | -12.8 | 1695 |
| 10 | 🇵🇱Sternik, Piotr | 1901 | — | — | — | — | — | — | — | — | ½ | * | — | 0.5 | 0.25 | 0.5 | +1.8 | 1938 |
| 11 | 🇵🇱Korsun, Wadym | 1867 | — | — | — | — | — | 0 | 0 | — | — | — | * | 0.0 | 0.00 | 4.0 | -32.4 | 1206 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Polak, MichalPOL+17.83.0 pts · #1
- 2Mazurek, JerzyPOL+14.82.0 pts · #4
- 3Flis, PiotrPOL+11.42.5 pts · #3
Top rating losers
- 1Korsun, WadymPOL-32.40.0 pts · #11
- 2Pajak, JakubPOL-12.80.5 pts · #9
- 3Lewandrowski, TomaszPOL-12.01.0 pts · #8
Biggest upsets
- R7+218 Elo gap