307th YMCA Autumn 2025-B Round 11-13
Round-RobinStandard
11 players participated in this 13-round tournament, held from 04 Dec 2025 to 18 Dec 2025 in Warszawa, Poland. 2 federations represented. Top 10 Elo average was 1856, and top seed was Wieslaw Kadzinski (🇵🇱 POL, 1902).
Michal Markiewicz (🇵🇱 POL, 1884) won with 3.5/13, ahead of Sebastian Basiaga (2.5) and Wieslaw Kadzinski (2.5). Markiewicz shared the lead from round 11 and won solo starting round 12.
Location
🇵🇱Warszawa, Poland
Dates
04 Dec 2025 → 18 Dec 2025
Time control
Standard: 90 minutes with 30 second increment from move 1
System
Round-robin · 13 rounds
Federations · 2 represented
🇵🇱Poland×10
🇸🇪Sweden×1
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 11 · 13 roundsMichal Markiewicz led from R12 onwards, the runner-up race stayed tight. Title race converged from 11 co-leaders at R4 to 1 by R12.
Co-leaders
12
11
11
11
11
11
11
11
2
1
2
1
1
Markiewicz#1Basiaga#2Kadzinski#3Sucharski#4Bobinski#5Mazurek#6Jaroszuk#7Moskwinski#8Bartczak#9Pettersson#10Pietrzak#11
R12 · LEADER CHANGE11 Dec
Michal Markiewicz takes the sole lead (3.0/12).
R10–R12 · WIN STREAK
Michal Markiewicz won 3 in a row (R10–R12).
Cross-table
| # | Player | Elo | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | Pts | SB | Bh | Δ Elo | Perf |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 🇵🇱Markiewicz, Michal | 1884 | * | — | — | 1 | — | — | — | 1 | — | — | 1 | 3.5 | 2.75 | 3.5 | +24.0 | 2167 |
| 2 | 🇵🇱Basiaga, Sebastian | 1875 | — | * | — | ½ | 0 | — | — | 1 | 1 | — | — | 2.5 | 1.75 | 4.0 | +6.0 | 1932 |
| 3 | 🇵🇱Kadzinski, Wieslaw | 1902 | — | — | * | ½ | — | — | — | 1 | — | — | 1 | 2.5 | 1.25 | 2.0 | +13.0 | 2090 |
| 4 | 🇵🇱Sucharski, Jakub | 1871 | 0 | ½ | ½ | * | — | — | — | — | — | — | — | 1.5 | 4.25 | 12.0 | -16.8 | 1800 |
| 5 | 🇵🇱Bobinski, Lukasz | 1874 | — | 1 | — | — | * | — | — | — | ½ | — | — | 1.5 | 2.75 | 3.0 | +20.0 | 2067 |
| 7 | 🇵🇱Jaroszuk, Marcin | 1703 | — | — | — | — | — | * | — | ½ | — | ½ | — | 1.0 | 0.50 | 1.0 | +3.4 | 1770 |
| 6 | 🇵🇱Mazurek, Jerzy | 1898 | — | — | — | — | — | — | * | — | — | 1 | — | 1.0 | 0.50 | 0.5 | +7.6 | 2610 |
| 9 | 🇵🇱Bartczak, Hanna | 1729 | 0 | 0 | 0 | — | — | ½ | — | * | — | — | — | 0.5 | 0.50 | 9.5 | -17.8 | 1520 |
| 8 | 🇵🇱Moskwinski, Marek | 1873 | — | 0 | — | — | ½ | — | — | — | * | — | — | 0.5 | 0.75 | 4.0 | -10.0 | 1682 |
| 10 | 🇸🇪Pettersson, Alexander | 1810 | — | — | — | — | — | ½ | 0 | — | — | * | — | 0.5 | 0.50 | 2.0 | -10.4 | 1608 |
| 11 | 🇵🇱Pietrzak, Wojciech | 1848 | 0 | — | 0 | — | — | — | — | — | — | — | * | 0.0 | 0.00 | 6.0 | -17.4 | 1094 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Markiewicz, MichalPOL+24.03.5 pts · #1
- 2Bobinski, LukaszPOL+20.01.5 pts · #5
- 3Kadzinski, WieslawPOL+13.02.5 pts · #3
Top rating losers
- 1Bartczak, HannaPOL-17.80.5 pts · #9
- 2Pietrzak, WojciechPOL-17.40.0 pts · #11
- 3Sucharski, JakubPOL-16.81.5 pts · #4