Oranienburger Chess Open 2025 Gruppe B
Open SwissStandard
26 players participated in this 5-round tournament, held from 13 Sept 2025 to 14 Sept 2025 in Oranienburg, Germany. Top 10 Elo average was 1817, and top seed was Michael Tornow (🇩🇪 GER, 1941).
Finn Geppert (🇩🇪 GER, 1661) won with 4.5/5, ahead of Paul Briese (4.5) and Michael Tornow (3.5). Geppert shared the lead from round 4, winning on tie-break.
The biggest upset came in round 5: Finn Geppert (1661) beat Michael Ziems (1904), a +243-point gap.
Location
🇩🇪Oranienburg, Germany
Dates
13 Sept 2025 → 14 Sept 2025
Time control
Standard: 30 Moves in 60 Min. / / 30 Min.
System
Swiss · 5 rounds
Federations · 1 represented
🇩🇪Germany×26
Top 3
- 🥇
- 🥈
- 🥉
How it unfolded
Top 6 · 5 roundsTight race until R5; 2 players tied at 4.5/5, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.
Co-leaders
10
3
1
3
2
R5 · TIEBREAK CLUSTER
2 players finish on 4.5/5. Geppert takes the title on Buchholz Cut1 (12.5).
R2–R5 · WIN STREAK
Paul Briese won 4 in a row (R2–R5).
Key matchups · top 4
Head-to-head between the four finishers| Player | 1 | 2 | 3 | 4 |
|---|---|---|---|---|
| 1Paul Briese | * | — | — | 1 |
| 2Finn Geppert | — | * | ½ | — |
| 3Michael Tornow | — | ½ | * | — |
| 4Carsten Scheike | 0 | — | — | * |
Grille américaine
| # | Player | Elo | Fed | R1 | R2 | R3 | R4 | R5 | Pts | Bu C1 | Bu | SB | Perf | Δ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | Geppert, Finn | 1661 | GER | +12N | +5B | =3N | +9B | +6N | 4.5 | 12.5 | 15.0 | 13.25 | 2212 | +127.2 |
| 2 | Briese, Paul | 1724 | GER | =6B | +23N | +11B | +10N | +4B | 4.5 | 11.5 | 13.0 | 11.50 | 2137 | +92.8 |
| 3 | Tornow, Michael | 1941 | GER | +25B | =7N | =1B | =8N | +11B | 3.5 | 13.0 | 13.0 | 7.75 | 1874 | -7.2 |
| 4 | Scheike, Carsten | 1795 | GER | +19N | +15B | +10B | =6N | −2N | 3.5 | 12.5 | 14.5 | 8.50 | 1911 | +15.8 |
| 5 | Majewski, Nico | 1765 | GER | +24B | −1N | +18B | =13N | +9N | 3.5 | 11.5 | 13.0 | 7.25 | 1834 | +14.4 |
| 6 | Ziems, Michael | 1904 | GER | =2N | +20B | +17N | =4B | −1B | 3.0 | 15.0 | 17.0 | 8.50 | 1741 | -17.0 |
| 7 | Lehmann, Michael | 1759 | GER | +14N | =3B | −9N | +15B | =8N | 3.0 | 11.5 | 14.0 | 8.25 | 1808 | +5.2 |
| 8 | Fritzsche, David | 1718 | GER | −9N | +22B | +12N | =3B | =7B | 3.0 | 11.5 | 13.5 | 7.75 | 1830 | +23.6 |
| 9 | Schuster, Rebekka | 1824 | GER | +8B | =11N | +7B | −1N | −5B | 2.5 | 14.0 | 16.5 | 7.25 | 1731 | -12.6 |
| 10 | Wolff, Marie Antoinette | 1815 | GER | +18N | +16B | −4N | −2B | =14N | 2.5 | 13.0 | 15.0 | 5.75 | 1742 | -8.0 |
| 11 | Hall, Oliver | 1753 | GER | +22N | =9B | −2N | +20B | −3N | 2.5 | 12.5 | 14.5 | 5.25 | 1557 | -28.0 |
| 12 | Schulze, Robert | 1797 | GER | −1B | +24N | −8B | =21N | +18B | 2.5 | 11.5 | 13.0 | 4.50 | 1566 | -37.2 |
| 13 | El-Hitami, Hisham | 1779 | GER | =20N | −17B | +25N | =5B | =16N | 2.5 | 10.5 | 10.5 | 4.00 | 1761 | -4.0 |
| 14 | Dziamski, Daniel | 0 | GER | −7B | +25N | =15N | =16B | =10B | 2.5 | 10.5 | 10.5 | 3.75 | 1763 | 0.0 |
| 15 | Oortmann, Alexis Miles | 1749 | GER | +26B | −4N | =14B | −7N | +23B | 2.5 | 10.5 | 10.5 | 2.75 | 1641 | -10.4 |
| 16 | Le, Tung | 1757 | GER | +21B | −10N | =19B | =14N | =13B | 2.5 | 9.5 | 11.5 | 5.50 | 1612 | -23.2 |
| 17 | Stegmann, Jens | 1786 | GER | =23B | +13N | −6B | +19N | — | 2.5 | 7.5 | 9.0 | 5.25 | 1817 | +3.6 |
| 18 | Mlynarski, Milosz | 1692 | GER | −10B | +21N | −5N | +24B | −12N | 2.0 | 10.5 | 12.0 | 3.50 | 993 | -43.6 |
| 19 | Thirumal, Shravan | 1616 | GER | −4B | +26N | =16N | −17B | =20N | 2.0 | 10.5 | 10.5 | 2.25 | 1602 | -4.4 |
| 20 | Heidrich, Jonathan | 0 | GER | =13B | −6N | +23B | −11N | =19B | 2.0 | 10.0 | 11.5 | 3.75 | 1656 | 0.0 |
| 21 | Ivashchenko, Ihor | 0 | GER | −16N | −18B | +26N | =12B | =24N | 2.0 | 8.5 | 8.5 | 2.00 | 1580 | 0.0 |
| 22 | Rauhut, Kenny | 0 | GER | −11B | −8N | −24B | +25B | +26N | 2.0 | 7.0 | 7.0 | 0.00 | 1657 | 0.0 |
| 23 | Winkler, Frida | 1592 | GER | =17N | −2B | −20N | +26B | −15N | 1.5 | 11.5 | 11.5 | 1.25 | 1583 | -3.2 |
| 24 | Halle, Viktor | 0 | GER | −5N | −12B | +22N | −18N | =21B | 1.5 | 10.0 | 12.0 | 3.00 | 952 | 0.0 |
| 25 | Pawlowski, Lion | 1736 | GER | −3N | −14B | −13B | −22N | F | 0.0 | 10.5 | 10.5 | 0.00 | 1060 | -27.2 |
| 26 | Chupikov, Mark | 1420 | GER | −15N | −19B | −21B | −23N | −22B | 0.0 | 8.5 | 10.0 | 0.00 | 851 | -26.0 |
Key insights
Biggest movers and upsets — the story behind the numbers.
Top rating gainers
- 1Geppert, FinnGER+127.24.5 pts · #2
- 2Briese, PaulGER+92.84.5 pts · #1
- 3Fritzsche, DavidGER+23.63.0 pts · #9
Top rating losers
- 1Mlynarski, MiloszGER-43.62.0 pts · #26
- 2Schulze, RobertGER-37.22.5 pts · #20
- 3Hall, OliverGER-28.02.5 pts · #22
Biggest upsets
- R5+243 Elo gap
- R4+163 Elo gap
- R1+136 Elo gap