15. Nordhaeuser Schachopen Meisterturnier

SwissStandard

106 players participated in this 7-round tournament, held from 31 Jul 2025 to 03 Aug 2025 in Nordhausen, Germany. 21 titled players from 8 federations. Top 10 Elo average was 2371, and top seed was Li Min Peng (🇨🇭 SUI, GM, 2509).

Li Min Peng (🇨🇭 SUI, GM, 2509) won with 6.0/7, ahead of Vadym Petrovskiy (6.0) and Bert Sieber (6.0). Peng shared the lead from round 1, winning on tie-break.

The biggest upset came in round 3: Diana Feshchenko (1782) beat Robin Jacobi (2243), a +461-point gap.

Location

🇩🇪Nordhausen, Germany

Dates

31 Jul 2025 → 03 Aug 2025

Time control

Standard: 90min/40moves+30min/end+30sec increment per move starting from move 1

System

Swiss · 7 rounds

Top seed

🇨🇭GMLi Min Peng2509

Avg top 10

2,371

Participants

106

Titled players · 21

GM×3

IM×2

FM×10

CM×4

WIM×1

WFM×1

Federations · 8 represented

🇩🇪Germany×88

🇵🇱Poland×3

🇹🇷Turkiye×2

🇳🇱Netherlands×2

🇺🇦Ukraine×2

🇨🇭Switzerland×2

🇨🇺Cuba×1

🇲🇽Mexico×1

Top 3

🥇
GMLi Min Peng
🇨🇭SUI·2509
6.0pts·2564perf+4.6
🥈
IMVadym Petrovskiy
🇩🇪GER·2443
6.0pts·2462perf+2.8
🥉
Bert Sieber
🇩🇪GER·2001
6.0pts·2299perf+96.0

How it unfolded

Top 6 · 7 rounds

Tight race until R5; 3 players tied at 6.0/7, decided on Buchholz. Title race narrowed from 2 co-leaders at R4 to 3 at the finish.

Co-leaders

Peng6Petrovskiy6Sieber6Schulze5.5Langheinrich5.5Mester5.5

R5–R7 · LEAD HELD

GM Li Min Peng held the sole lead from R5 through R7 without losing it.

R7 · TIEBREAK CLUSTER

3 players finish on 6.0/7. Peng takes the title on Buchholz Cut1 (29.0).

R6 · HEAD-TO-HEAD · WINNER VS 2ND

GM Li Min Peng drew with IM Vadym Petrovskiy (White).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1GMLi Min Peng	*	½	—	½
2IMVadym Petrovskiy	½	*	—	—
3Bert Sieber	—	—	*	—
4FMLara Schulze	½	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Peng, Li MinGM	2509	SUI	+85N	+24B	+14N	+21B	+10N	=2B	=4N	6.0	29.0	31.5	25.75	2564	+4.6
2	Petrovskiy, VadymIM	2443	GER	+39N	+22B	=11N	+15B	+20N	=1N	+7B	6.0	28.5	32.5	27.00	2462	+2.8
3	Sieber, Bert	2001	GER	−64B	+94N	+53B	+44N	+26B	+21N	+8B	6.0	23.0	25.0	22.00	2299	+96.0
4	Schulze, LaraFM	2317	GER	=42N	=63B	+48N	+16B	+11N	+12B	=1B	5.5	27.5	30.5	24.25	2334	+7.0
5	Mester, PhilippFM	2218	GER	+81N	+28B	=16N	−9B	+43N	+24B	+15B	5.5	25.5	28.0	20.75	2301	+28.4
6	Langheinrich, FerencIM	2348	GER	+54B	+46N	=7B	−20N	+47B	+35N	+14B	5.5	24.5	28.0	21.50	2274	-4.3
7	Udelnov, Valentin	2141	GER	+88N	+45B	=6N	=12B	+33N	+9B	−2N	5.0	29.0	31.0	19.75	2341	+76.0
8	Reichmann, FelixCM	2191	GER	+72N	+30B	+27N	=17B	=9N	+10B	−3N	5.0	28.5	31.5	20.75	2338	+55.2
9	Bagrationi, AlexanderGM	2415	ISR	+44B	=20N	+36B	+5N	=8B	−7N	+25B	5.0	27.5	31.0	21.50	2268	-9.2
10	Bethke, RichardFM	2388	GER	+58N	+43B	+13N	+25B	−1B	−8N	+22B	5.0	27.5	31.0	20.00	2309	-8.0
11	Stotyn, FabianCM	2161	GER	+75B	+47N	=2B	=23N	−4B	+42N	+26B	5.0	26.5	29.5	19.00	2269	+22.4
12	Machado La Rosa, Adrian	2220	CUB	=65B	+89N	+86B	=7N	+22B	−4N	+31B	5.0	23.5	25.5	16.00	2179	-2.6
13	Schulz, KarstenFM	2120	GER	+87N	+61B	−10B	+51N	−21N	+63B	+34N	5.0	23.0	25.0	16.00	2244	+24.0
14	Philipp, MathiasCM	2147	GER	+29N	+38B	−1B	+56N	=17N	+30B	−6N	4.5	28.0	31.5	17.75	2259	+19.6
15	Aepfler, ChristianFM	2116	GER	+94B	+64N	=23B	−2N	+40B	+17B	−5N	4.5	27.0	29.0	15.50	2229	+21.6
16	Grossmann, Piet	2080	GER	+32B	+67N	=5B	−4N	=42B	=29N	+45B	4.5	26.0	29.0	17.00	2049	-2.8
17	Poetsch, HagenGM	2479	GER	+77B	=49N	+52B	=8N	=14B	−15N	+27B	4.5	25.0	28.0	17.00	2215	-17.9
18	Koerner, Jonas	1833	GER	−22B	+39B	+59N	=28B	−27N	+56N	+46B	4.5	23.0	26.5	16.50	2108	+102.8
19	Marynychenko, YehorCM	2183	UKR	+53B	−50N	−42B	+86N	=44B	+65N	+47B	4.5	20.5	22.5	13.75	1995	-54.8
20	Kruimer, Matthias	2008	NED	+93N	=9B	+34N	+6B	−2B	=25N	F	4.0	28.5	30.5	16.00	2365	+50.4
21	Huber, BenediktFM	2269	GER	+48N	+59B	+37N	−1N	+13B	−3B	F	4.0	28.0	28.0	16.00	2231	-3.6
22	Vranckx, Oscar	2057	GER	+18N	−2N	+72B	+80B	−12N	+66B	−10N	4.0	26.5	29.0	13.00	2106	+10.0
23	Haussernot, CecileWIM	2170	FRA	+68N	+31B	=15N	=11B	=37N	=27B	F	4.0	25.5	28.5	15.75	2188	+3.4
24	Haubold, Christian	1976	GER	+101B	−1N	+81B	=40N	+45B	−5N	=29B	4.0	25.5	26.5	11.00	2044	+21.2
25	Haubold, SebastianFM	2172	GER	+95B	+51N	+50B	−10N	=31B	=20B	−9N	4.0	25.0	27.0	13.00	2142	-8.4
26	Plueg, AndreasFM	2175	GER	=63N	=42B	+61N	+73B	−3N	+57B	−11N	4.0	24.5	27.5	13.25	2023	-25.2
27	Meuer, David	2101	GER	+91N	+96B	−8B	=47N	+18B	=23N	−17N	4.0	23.5	25.5	12.25	2074	-5.2
28	Hempel, Lorenz	1987	GER	+78B	−5N	+90B	=18N	−35B	+81N	=33N	4.0	23.5	25.5	11.75	2020	+13.2
29	Sniegowski, Richard	1878	GER	−14B	+104N	+46B	=49N	=52B	=16B	=24N	4.0	23.5	24.5	12.25	2062	+68.0
30	Langer, Paul Georg	1981	GER	+106B	−8N	+67B	=45N	+49B	−14N	=35B	4.0	23.5	23.5	10.25	2018	+6.0
31	Herka, Jakub	1992	POL	+103B	−23N	+64B	+71N	=25N	=37B	−12N	4.0	23.0	24.0	11.00	2065	+28.0
32	Kaiser, Markus	0	GER	−16N	+60B	−43N	+83B	=56B	+50N	=41B	4.0	22.5	25.0	13.25	2044	0.0
33	Heimrath, ReinerFM	2159	GER	−71B	+87N	+54B	+50N	−7B	=46N	=28B	4.0	22.5	24.5	12.75	1999	-25.6
34	Hahn, MarkusFM	2298	GER	=89B	+99N	−20B	=36N	+38B	+62N	−13B	4.0	22.5	24.0	12.00	2041	-39.0
35	Bethke, Robert	2097	GER	=80N	=82B	=68N	+70B	+28N	−6B	=30N	4.0	22.0	24.5	13.00	1996	-15.8
36	Teucher, Saskia	1992	GER	=55N	+69B	−9N	=34B	−63N	+87B	+68N	4.0	21.5	23.5	11.75	2038	+12.4
37	Steger, Lukas Daniel	2105	GER	+98B	+71N	−21B	+38N	=23B	=31N	F	4.0	21.0	21.0	13.00	2147	+14.1
38	Shevchenko, Igor	1935	GER	+70N	−14N	+100B	−37B	−34N	+88B	+63N	4.0	20.5	22.0	9.50	2017	+28.0
39	Hoke, Adrian	1928	GER	−2B	−18N	−66B	+102B	+101N	+98N	+69B	4.0	19.5	20.5	7.00	2019	+12.2
40	Duzy, Stefan	1957	GER	−99B	+91N	+105B	=24B	−15N	=49N	+66B	4.0	18.5	19.5	9.75	1895	-8.4
41	Bock, Marlon	2034	GER	=82N	−80B	=101N	+87B	=73N	+53B	=32N	4.0	17.5	18.5	10.75	1923	-32.4
42	Wilhelm, Serge	1924	SUI	=4B	=26N	+19N	=43B	=16N	−11B	=57N	3.5	27.0	30.5	15.00	2129	+35.0
43	Koenigsmann, Marcus	2021	GER	+90B	−10N	+32B	=42N	−5B	=44N	=48B	3.5	25.0	27.0	11.25	1948	-14.2
44	Feshchenko, Diana	1782	UKR	−9N	+93B	+97N	−3B	=19N	=43B	=60N	3.5	24.5	26.5	9.75	2055	+43.2
45	Bodling, Florian	1828	GER	+83N	−7N	+74B	=30B	−24N	+73B	−16N	3.5	23.5	26.0	10.50	2028	+35.2
46	Mehner, Lorenz	2011	GER	+84N	−6B	−29N	+88B	+68N	=33B	−18N	3.5	23.5	25.5	9.50	1970	-17.6
47	Klein, Timon	1958	GER	+105N	−11B	+96N	=27B	−6N	+82B	−19N	3.5	23.5	24.5	7.50	1998	+12.0
48	Carton, Patrick	1910	IRL	−21B	+66N	−4B	=76N	+55B	=52N	=43N	3.5	23.0	26.0	11.50	1962	+4.2
49	Schmidt, Ulrich	2056	GER	+92N	=17B	=80N	=29B	−30N	=40B	=58N	3.5	22.5	24.5	11.25	1981	-16.0
50	Blaschke, Henri Johannes	1978	GER	+102N	+19B	−25N	−33B	=80N	−32B	+78N	3.5	22.0	23.0	9.75	2042	+11.0
51	Zawisza, Alan	1976	POL	+79N	−25B	+55N	−13B	−66N	=69B	+82N	3.5	21.5	24.0	10.50	1960	-2.8
52	Kuntze, Andreas	2056	GER	=86B	+65N	−17N	=68B	=29N	=48B	=61N	3.5	21.5	23.5	11.00	1969	-18.4
53	Oleszczuk, Artur	1889	POL	−19N	+102B	−3N	+105B	=59B	−41N	+83B	3.5	21.5	22.5	6.25	1962	+25.2
54	Adiguzel, Eray	1740	TUR	−6N	+84B	−33N	+90B	F	+67N	=62B	3.5	20.5	22.5	9.25	2013	+39.0
55	Dittmann, Benno	1784	GER	=36B	=74N	−51B	=65N	−48N	+101B	+85N	3.5	19.5	20.5	8.50	1931	+54.0
56	Behr, Gregor	1978	GER	+104B	F	+82N	−14B	=32N	−18B	+80N	3.5	19.0	19.0	8.00	1954	-1.4
57	Huhs, Sven	1964	GER	=100B	−86N	=76B	+64N	+67B	−26N	=42B	3.5	18.5	20.0	10.00	1839	-22.0
58	Voigt, AnastasiaWFM	1898	GER	−10B	−90N	+103B	−67N	+64B	+86N	=49B	3.5	18.5	19.5	7.75	1901	-4.0
59	Hoeller, Armin	1991	GER	+66N	−21N	−18B	+101B	=53N	+80B	F	3.5	18.5	18.5	8.25	1930	-8.8
60	Koksch, Robert	2011	GER	−67B	−32N	=91B	+100N	=86B	+72N	=44B	3.5	17.5	19.0	8.25	1866	-21.0
61	Mock, Markus, Prof.	1910	GER	+97N	−13N	−26B	F	+106B	+79N	=52B	3.5	17.5	17.5	6.75	2070	+19.2
62	Hagemeister, Philipp	2064	GER	F	+88B	+63N	F	+71B	−34B	=54N	3.5	15.5	15.5	9.75	2086	+4.4
63	Woellenstein, Sebastian	1889	GER	=26B	=4N	−62B	+99N	+36B	−13N	−38B	3.0	26.0	27.5	10.25	1988	+14.8
64	Li, Joshua	1759	GER	+3N	−15B	−31N	−57B	−58N	+104B	+89B	3.0	23.5	24.5	9.00	1900	+45.6
65	Hoekstra, Max	1901	NED	=12N	−52B	=69N	=55B	+70N	−19B	=73N	3.0	22.5	25.5	10.25	1909	-2.4
66	Haj-Ahmad, Housam	0	GER	−59B	−48B	+39N	+89N	+51B	−22N	−40N	3.0	22.5	24.5	9.50	1912	0.0
67	Loos, Tilda	1785	GER	+60N	−16B	−30N	+58B	−57N	−54B	+87N	3.0	22.5	24.5	9.00	1885	+33.2
68	Rueggeberg, Jan	1904	GER	−23B	+103N	=35B	=52N	−46B	+76N	−36B	3.0	22.0	23.0	7.75	1919	+1.8
69	Alkin, Mert	1776	GER	=74B	−36N	=65B	=81N	+75B	=51N	−39N	3.0	20.5	23.0	9.00	1874	+17.2
70	Bemmann, Carlo	1730	GER	−38B	+75N	=77B	−35N	−65B	=74N	+95B	3.0	20.0	22.0	8.00	1884	+50.8
71	Ritter, Uwe	1895	GER	+33N	−37B	+83N	−31B	−62N	+92B	F	3.0	20.0	20.0	8.50	2038	+22.2
72	Gok, Altay Erdem	1892	TUR	−8B	+106N	−22N	−79B	+84N	−60B	+93N	3.0	20.0	20.0	4.50	1813	-27.6
73	Wabersich, Titus	1961	GER	=76B	=100N	+99B	−26N	=41B	−45N	=65B	3.0	19.0	20.5	7.25	1813	-54.0
74	Diedrichs, Ralf Christian	1981	GER	=69N	=55B	−45N	=92B	−82N	=70B	+81N	3.0	18.0	20.0	8.25	1759	-82.0
75	Donath, Simon	1787	GER	−11N	−70B	+84N	=96B	−69N	=91B	+105N	3.0	17.5	18.5	5.50	1762	-7.4
76	Uhlig, Silas	1675	GER	=73N	−97B	=57N	=48B	=92N	−68B	+88N	3.0	17.0	19.0	8.00	1881	+65.6
77	Thieme-Garmann, Alexander	1950	GER	−17N	=92B	=70N	=82B	=93N	−78B	+86N	3.0	17.0	19.0	6.75	1826	-26.0
78	Gundermann, Mika Oleg	1778	GER	−28N	−81B	−87B	+103N	+95B	+77N	−50B	3.0	17.0	18.0	6.00	1858	+28.4
79	Ferrer Ortega, Jesus Guillermo	1755	MEX	−51B	+95N	F	+72N	F	−61B	+92N	3.0	14.0	14.0	7.00	1971	+29.0
80	Varun Raj Kaipalath	1858	IND	=35B	+41N	=49B	−22N	=50B	−59N	−56B	2.5	22.5	26.0	9.50	1924	+10.8
81	Hertel, Holger	1900	GER	−5B	+78N	−24N	=69B	+96N	−28B	−74B	2.5	22.5	24.5	6.50	1813	-18.2
82	Friedhoff, Kai	1813	GER	=41B	=35N	−56B	=77N	+74B	−47N	−51B	2.5	21.5	24.5	8.50	1893	+12.8
83	Kachel, Alfred	2074	GER	−45B	+98N	−71B	−32N	=91N	+93B	−53N	2.5	18.0	20.0	5.00	1797	-43.4
84	Strohner, Maximilian	1803	GER	−46B	−54N	−75B	+104N	−72B	=100N	+99B	2.5	16.0	17.0	3.25	1700	-40.8
85	May, Alexander	1952	GER	−1B	=101N	F	F	+94B	+90N	−55B	2.5	14.5	14.5	4.50	1922	-12.8
86	Meitzner, Jonathan Franz	1820	GER	=52N	+57B	−12N	−19B	=60N	−58B	−77B	2.0	23.5	26.5	7.00	1882	+14.0
87	Fromm, Nick	1871	GER	−13B	−33B	+78N	−41N	+100B	−36N	−67B	2.0	23.0	24.5	4.50	1785	-18.0
88	Siebert, Marco Leander	1868	GER	−7B	−62N	+104B	−46N	+99B	−38N	−76B	2.0	20.5	21.5	2.50	1739	-25.2
89	Wahlicht, Mike	1918	GER	=34N	−12B	=92N	−66B	=90N	=96B	−64N	2.0	19.0	21.0	5.00	1810	-20.0
90	Fiedler, Ralf	1805	GER	−43N	+58B	−28N	−54N	=89B	−85B	=103N	2.0	19.0	20.0	5.00	1742	-24.8
91	Loeffelholz, Christian	1837	GER	−27B	−40B	=60N	=95N	=83B	=75N	F	2.0	19.0	19.0	5.50	1844	+0.2
92	Stolz, Markus	1834	GER	−49B	=77N	=89B	=74N	=76B	−71N	−79B	2.0	18.5	20.5	5.50	1732	-19.8
93	Brueckner, Julian	1807	GER	−20B	−44N	=95B	+94N	=77B	−83N	−72B	2.0	18.0	20.0	4.50	1764	-18.0
94	Halas, Neele Zoe	1864	GER	−15N	−3B	=102N	−93B	−85N	=99N	+106B	2.0	17.5	17.5	1.25	1614	-74.0
95	Harounian, Daniel	1884	GER	−25N	−79B	=93N	=91B	−78N	+102B	−70N	2.0	17.0	18.0	3.00	1676	-40.6
96	Naumann, Martin	1689	GER	F	−27N	−47B	=75N	−81B	=89N	+98B	2.0	17.0	17.0	4.50	1795	+27.2
97	Jacobi, Robin	2243	GER	−61B	+76N	−44B	+98N	F	F	F	2.0	15.5	15.5	5.00	1866	-32.4
98	Powalla, Christian	1869	GER	−37N	−83B	+106N	−97B	+105N	−39B	−96N	2.0	15.5	15.5	1.00	1682	-28.6
99	Mehner, Clara	1692	GER	+40N	−34B	−73N	−63B	−88N	=94B	−84N	1.5	18.5	20.5	5.00	1689	-2.8
100	Henzelmann, Matthias	1737	GER	=57N	=73B	−38N	−60B	−87N	=84B	F	1.5	18.5	19.5	4.50	1731	-2.4
101	Schnuecker, Marcel	1803	GER	−24N	=85B	=41B	−59N	−39B	−55N	−104N	1.0	21.5	22.5	3.25	1609	-29.2
102	Fritzsche, David	1756	GER	−50B	−53N	=94B	−39N	=103B	−95N	F	1.0	16.5	17.5	1.50	1615	-38.0
103	Lorch, Alexander	1785	GER	−31N	−68B	−58N	−78B	=102N	F	=90B	1.0	16.5	16.5	1.50	1583	-28.8
104	Ismail, Nauras	1759	GER	−56N	−29B	−88N	−84B	F	−64N	+101B	1.0	16.0	16.0	1.00	1574	-52.0
105	Endter, Marcel	1691	GER	−47B	F	−40N	−53N	−98B	+106N	−75B	1.0	16.0	16.0	0.00	1092	-49.6
106	FIDE 533052468	0	—	−30N	−72B	−98B	F	−61N	−105B	−94N	0.0	15.5	15.5	0.00	1068	0.0

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Koerner, JonasGER
+102.8
4.5 pts · #15
2Sieber, BertGER
+96.0
6.0 pts · #3
3Udelnov, ValentinGER
+76.0
5.0 pts · #13

Top rating losers

1Diedrichs, Ralf ChristianGER
-82.0
3.0 pts · #56
2Halas, Neele ZoeGER
-74.0
2.0 pts · #102
3Marynychenko, YehorCMUKR
-54.8
4.5 pts · #18

Biggest upsets

R3+461 Elo gap
Feshchenko, Diana1782 beat Jacobi, Robin2243
R6+363 Elo gap
FMAepfler, Christian2116 beat GMPoetsch, Hagen2479
R4+340 Elo gap
Kruimer, Matthias2008 beat IMLangheinrich, Ferenc2348