1. Muenster Oster Open - B

Open SwissStandard

108 players participated in this 9-round tournament, held from 27 Mar 2026 to 31 Mar 2026 in Muenster, Germany. 8 federations represented. Top 10 Elo average was 1984, and top seed was Olaf Hollnack (🇩🇪 GER, 2067).

Boris Fistoul (🇩🇪 GER, 2022) won with 7.5/9, ahead of Filip Grozea (7.5) and Silas Cassel (7.0). Fistoul shared the lead from round 7, winning on tie-break.

The biggest upset came in round 3: Constantin Luccone (1583) beat Bennet Hirschmueller (1860), a +277-point gap.

Location

🇩🇪Muenster, Germany

Dates

27 Mar 2026 → 31 Mar 2026

Time control

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

System

Swiss · 9 rounds

Top seed

🇩🇪Olaf Hollnack2067

Avg top 10

1,984

Participants

108

Federations · 8 represented

🇩🇪Germany×98

🇳🇱Netherlands×3

🇬🇧England×2

🇧🇪Belgium×1

🇹🇷Turkiye×1

🇱🇻Latvia×1

🇰🇬Kyrgyzstan×1

🇮🇳India×1

Top 3

🥇
Boris Fistoul
🇩🇪GER·2022
7.5pts·2121perf+21.4
🥈
Filip Grozea
🇩🇪GER·1928
7.5pts·2076perf+31.8
🥉
Silas Cassel
🇩🇪GER·1885
7.0pts·2048perf+37.0

How it unfolded

Top 6 · 9 rounds

Tight race until R9; 2 players tied at 7.5/9, decided on Buchholz.

Co-leaders

Grozea7.5Fistoul7.5Wetterau7Cassel7Luccone6.5Nattermueller6.5

R9 · TIEBREAK CLUSTER

2 players finish on 7.5/9. Fistoul takes the title on Buchholz Cut1 (49.0).

R8 · HEAD-TO-HEAD · WINNER VS 2ND

Filip Grozea drew with Boris Fistoul (Black).

WIN STREAKS · 2 top finishers

Filip Grozea 4 wins (R3–R6)Georg Wetterau 3 wins (R5–R7)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Filip Grozea	*	½	—	—
2Boris Fistoul	½	*	—	1
3Georg Wetterau	—	—	*	—
4Silas Cassel	—	0	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	R8	R9	Pts	Bu C1	Bu	SB	Perf	Δ
1	Fistoul, Boris	2022	GER	+29B	+92N	=17B	+3N	=5N	+28B	+16N	=2B	+6B	7.5	49.0	51.0	41.25	2121	+21.4
2	Grozea, Filip	1928	GER	+61B	=18N	+47B	+24N	+40B	+5N	=6B	=1N	+11B	7.5	46.5	50.5	40.75	2076	+31.8
3	Cassel, Silas	1885	GER	=59N	+97B	+57N	−1B	+41N	+15B	=7N	+8B	+14N	7.0	43.5	45.0	32.25	2048	+37.0
4	Wetterau, Georg	1871	GER	=83N	+42B	=15N	=10B	+58N	+66B	+14B	=6N	+9B	7.0	41.5	44.5	34.00	1974	+23.4
5	Luccone, Constantin	1583	GER	+43B	+55N	+31B	+82N	=1B	−2B	=8N	=13N	+18B	6.5	46.5	49.5	32.25	2021	+195.2
6	Heermann, Kai	1890	GER	+95B	+67N	=19B	+30N	+14B	+53B	=2N	=4B	−1N	6.5	46.0	48.0	30.50	2025	+32.6
7	Nattermueller, Irina	2032	GER	−62B	=106N	+97B	+18N	+24B	+31N	=3B	=22N	+26B	6.5	39.5	40.0	29.50	1971	-10.2
8	Ilskens, Linus	1913	GER	+105B	+45N	=30B	−19N	+33B	+20N	=5B	−3N	+29B	6.0	44.0	44.5	26.25	1881	-13.6
9	Pallapies, Kilian	1890	GER	+65N	−19B	+62N	=41B	+57N	+21B	=12N	+16B	−4N	6.0	42.0	46.0	28.25	1932	+10.0
10	Unkel, Jari	1706	GER	+22N	−17B	+85B	=4N	−12N	=63B	+45N	+76B	+36N	6.0	41.0	44.0	27.00	1962	+122.4
11	Maes, Patrick	1936	BEL	+41N	−30B	−67B	+78N	+35N	+45B	+76N	+12B	−2N	6.0	39.5	43.0	27.00	1893	-9.0
12	Teschler, Ansgar	1869	GER	+106B	+108N	−40B	=15N	+10B	+19N	=9B	−11N	+30B	6.0	39.0	39.0	22.75	1899	+7.2
13	Syed, Tareq	1918	GER	F	+101B	+23N	−20B	=29N	+82N	+44B	=5B	+21N	6.0	37.0	37.0	25.75	1900	-1.2
14	Nattermueller, Matthias	1951	GER	+86N	+21B	=24N	+34B	−6N	+27B	−4N	+46B	−3B	5.5	46.5	49.5	26.25	1908	-9.2
15	Wilmes, Niklas	1710	GER	=50B	+26N	=4B	=12B	+34N	−3N	−31B	+54N	+43B	5.5	44.5	49.0	28.25	1953	+117.2
16	Hollnack, Olaf	2067	GER	+51B	=27N	+38B	=40N	+82B	+44N	−1B	−9N	=20B	5.5	43.0	46.0	24.75	1902	-65.6
17	Henzelmann, Matthias	1852	GER	+52B	+10N	=1N	−53B	−23N	+62B	+58N	=32B	=33N	5.5	42.0	46.0	27.25	1961	+47.6
18	Gerzen, Robin	1772	GER	+84N	=2B	−53N	−7B	+89N	+70B	+34N	+28B	−5N	5.5	42.0	44.5	23.25	1833	+22.0
19	Ufer, Max	1769	GER	+96B	+9N	=6N	+8B	−53N	−12B	−46N	+66B	+48N	5.5	41.5	43.5	25.25	1896	+55.6
20	Jaeger, Jeremy	1775	GER	+87N	=53B	+25B	+13N	−44N	−8B	+66N	=36B	=16N	5.5	40.5	43.5	25.50	1944	+72.4
21	Strumann, Kjartan Bjoern	1783	GER	+100B	−14N	+60B	+69N	+32B	−9N	=26B	+31N	−13B	5.5	40.5	42.0	21.75	1877	+17.6
22	Mazurtsova, Margarita	1889	GER	−10B	+52N	=29B	+47N	+30B	=40N	+43B	=7B	F	5.5	40.5	40.5	26.50	1918	+6.2
23	Krimphove, Martin	0	GER	+81B	+85N	−13B	=33N	+17B	−43N	=30B	+38N	=25B	5.5	40.0	43.0	24.75	1872	0.0
24	Queissert, Marten	1795	GER	+99B	+32N	=14B	−2B	−7N	+95N	=29B	=42N	+67B	5.5	39.5	41.0	19.50	1895	+42.8
25	Hans, Julian	1973	GER	=35N	+72B	−20N	−29B	+84N	=37B	+41N	+47B	=23N	5.5	38.5	41.5	23.25	1749	-34.2
26	Costello, Colin A	1909	ENG	=57N	−15B	=83N	+108B	+72N	+68B	=21N	+27B	−7N	5.5	37.0	37.0	18.75	1810	-19.2
27	Adiguzel, Eray	1799	TUR	+69B	=16B	=68N	=58B	+70N	−14N	+67B	−26N	+42B	5.5	35.5	39.0	21.50	1831	+7.0
28	Tesic, Luka	1855	GER	+58B	−82N	+108B	+95N	+71B	−1N	=32B	−18N	+63B	5.5	34.5	34.5	16.00	1843	-2.6
29	Stoehr, Franz-Michael	1748	GER	−1N	+99B	=22N	+25N	=13B	=36B	=24N	+44B	−8N	5.0	45.5	47.0	22.50	1909	+66.8
30	Metzner, Nikolaus	1775	GER	+73B	+11N	=8N	−6B	−22N	+72B	=23N	+59B	−12N	5.0	43.0	46.5	22.75	1809	+5.0
31	Hirschmueller, Bennet	1860	GER	+75N	+37B	−5N	+68B	=66N	−7B	+15N	−21B	=35N	5.0	41.0	44.5	21.75	1779	-37.2
32	Jonnek, Thomas	2024	GER	+56N	−24B	+51N	+70B	−21N	+39B	=28N	=17N	F	5.0	39.5	39.5	23.00	1850	-29.6
33	Roemer, Uri	1791	GER	F	+80B	=66N	=23B	−8N	=41B	+57N	+40N	=17B	5.0	37.0	37.0	21.50	1851	+24.4
34	Grassnickel, Lutz, Dr.	1853	GER	=42N	+83B	+59B	−14N	−15B	+60N	−18B	=61N	+79B	5.0	36.5	39.5	18.75	1733	-50.8
35	Nathe, Nico	1747	GER	=25B	−70N	+102B	=77N	−11B	+73N	+60B	=43N	=31B	5.0	35.5	36.5	17.75	1805	+9.6
36	Bahr, Maximilian	1884	GER	=68B	=93N	=61B	+103N	=45B	=29N	+40B	=20N	−10B	5.0	35.0	35.5	17.25	1774	-26.2
37	Kretschmer, Tom	1765	GER	+60B	−31N	−69B	=74N	+78B	=25N	=79B	+49N	=46N	5.0	34.0	37.5	20.50	1713	-9.4
38	Westermann, Walter	1782	GER	=94N	+89B	−16N	−57B	+93N	=83B	+68N	−23B	+84N	5.0	29.0	31.0	13.50	1800	+2.4
39	De Kleijn, Erwin	1797	NED	−40B	+98N	+93B	−66B	+59N	−32N	+82B	F	+58N	5.0	27.5	27.5	14.50	1817	+3.6
40	Oskamp, Jannik	1779	GER	+39N	+76B	+12N	=16B	−2N	=22B	−36N	−33B	=45B	4.5	44.0	47.5	22.25	1867	+41.2
41	Shynkar, Daria	1724	GER	−11B	+73N	+55B	=9N	−3B	=33N	−25B	=71N	+69B	4.5	41.0	44.5	18.75	1790	+21.6
42	Toktakunov, Arsen	1662	KGZ	=34B	−4N	+48N	=76B	+92N	=46B	=85N	=24B	−27N	4.5	38.5	40.5	17.25	1823	+77.2
43	Fleischmann, Theo	1798	GER	−5N	+94B	−58N	+90B	+61N	+23B	−22N	=35B	−15N	4.5	38.5	40.5	16.50	1605	-37.0
44	Huether, Jakob	1878	GER	+49B	+62N	−82B	+67N	+20B	−16B	−13N	−29N	=61B	4.5	38.0	41.0	19.50	1795	-40.4
45	Bertram, Steven	1766	GER	+71N	−8B	+84N	=72B	=36N	−11N	−10B	+75B	=40N	4.5	38.0	41.0	16.50	1691	-11.8
46	Becker, Daniel	1848	GER	=80N	F	−95B	+79N	+49B	=42N	+19B	−14N	=37B	4.5	34.0	34.0	20.00	1773	-29.2
47	Boeckmann, Leon Hannes	1732	GER	=107N	+74B	−2N	−22B	F	+84B	+83N	−25N	+64B	4.5	32.5	32.5	13.75	1830	+27.6
48	Waluga, Kilian	1837	GER	=66B	−68N	−42B	+102N	+65B	−67N	+71B	+74N	−19B	4.5	31.5	32.5	13.75	1570	-98.0
49	Keshet, Ron	1688	GER	−44N	−71B	+100N	+64B	−46N	+92B	=63N	−37B	+72N	4.5	31.0	32.5	13.00	1766	+23.2
50	Homburg, Frank	1905	NED	=15N	−57B	+75N	−71B	=103N	=61B	=89N	+68B	=51N	4.5	31.0	31.5	15.50	1749	-31.0
51	Koch, Burkhard	1765	GER	−16N	+104B	−32B	=94N	=73B	+69N	=74B	=79N	=50B	4.5	31.0	31.5	12.50	1808	+5.4
52	Kosfeld, Thorsten	1642	GER	−17N	−22B	+87N	−92B	−64N	+86B	=91N	+97B	+70N	4.5	29.0	30.5	12.25	1700	+9.0
53	Wolfer, Noah	1944	GER	+103B	=20N	+18B	+17N	+19B	−6N	F	F	F	4.5	29.0	29.0	19.75	1991	+13.6
54	Meyer, Ulrich	1908	GER	−82B	−58N	+80N	−83B	=90N	+88B	+97N	−15B	+60B	4.5	28.5	30.0	13.25	1628	-57.2
55	Henzelmann, Klaus	1816	GER	+88N	−5B	−41N	F	+99B	=57B	−59N	+93N	+89B	4.5	28.0	28.0	11.00	1663	-28.2
56	Poppenberg, Lars	1756	GER	−32B	−69N	+98B	+96N	−60B	−74N	+94B	=73N	+87B	4.5	26.5	28.0	10.25	1615	-23.6
57	Schwetz, Emil Oliver	1712	GER	=26B	+50N	−3B	+38N	−9B	=55N	−33B	−60N	+73B	4.0	41.5	45.0	18.00	1804	+32.4
58	Meis, Jonas	1667	GER	−28N	+54B	+43B	=27N	−4B	+64N	−17B	=85N	−39B	4.0	41.5	44.5	17.25	1797	+30.6
59	Yilmaz, Deniz	1700	GER	=3B	F	−34N	=63N	−39B	+81N	+55B	−30N	+85B	4.0	38.0	41.0	16.50	1814	+48.4
60	Kashevarov, Aleksandr	0	NED	−37N	+65B	−21N	+86B	+56N	−34B	−35N	+57B	−54N	4.0	37.5	40.5	15.50	1731	+2.8
61	Olbrich, Leonard	1720	GER	−2N	+87B	=36N	F	−43B	=50N	+78B	=34B	=44N	4.0	37.5	37.5	16.00	1749	+4.6
62	Hund, Reinhard	1762	GER	+7N	−44B	−9B	=73N	+94B	−17N	=93B	=69N	=74B	4.0	35.0	37.0	14.75	1691	-23.6
63	Philipp, Luis	1781	GER	=70B	−66N	+89N	=59B	F	=10N	=49B	+72B	−28N	4.0	33.0	33.0	15.00	1645	-45.6
64	Michalicek, Roland	1881	GER	=97N	F	=79B	−49N	+52B	−58B	+98N	+83B	−47N	4.0	29.5	31.0	11.50	1673	-42.6
65	Hladeniuk, Yelyzaveta	1706	GER	−9B	−60N	=99N	+80B	−48N	+102B	=75N	−84B	+83N	4.0	29.0	30.0	10.00	1758	+18.0
66	Dupuis, Daniel	1630	ENG	=48N	+63B	=33B	+39N	=31B	−4N	−20B	−19N	F	3.5	41.5	41.5	16.25	1767	+54.8
67	Hannemann, Manfred	1763	GER	F	−6B	+11N	−44B	=83N	+48B	−27N	+70B	−24N	3.5	39.0	39.0	15.50	1730	-7.2
68	Datta, Anupam	1698	GER	=36N	+48B	=27B	−31N	+77B	−26N	−38B	−50N	=93B	3.5	38.5	40.5	14.25	1744	+10.0
69	Foeing, Sebastian	1586	GER	−27N	+56B	+37N	−21B	−76N	−51B	+92N	=62B	−41N	3.5	37.0	39.0	13.50	1693	+44.5
70	Brandes, Ramin	0	GER	=63N	+35B	+77B	−32N	−27B	−18N	+81B	−67N	−52B	3.5	36.5	40.0	14.00	1710	0.0
71	Fuendling, Alexander	0	GER	−45B	+49N	+91B	+50N	−28N	−76B	−48N	=41B	−80N	3.5	35.0	37.5	13.75	1699	0.0
72	Drees, Patrick	0	GER	+91B	−25N	+92B	=45N	−26B	−30N	+77B	−63N	−49B	3.5	35.0	37.0	10.25	1725	0.0
73	Franzen, Niklas	0	GER	−30N	−41B	+88N	=62B	=51N	−35B	+101N	=56B	−57N	3.5	34.5	36.0	11.00	1652	0.0
74	Heller, Steven	0	GER	=77B	−47N	F	=37B	=91N	+56B	=51N	−48B	=62N	3.5	33.0	33.0	14.25	1730	0.0
75	Steinbring, Jean-Niklas	1679	GER	−31B	=81N	−50B	+105N	=85B	=77N	=65B	−45N	=78B	3.5	31.5	32.0	9.25	1706	+8.8
76	Schulte zu Sodingen, Matthias	1815	GER	+98B	−40N	F	=42N	+69B	+71N	−11B	−10N	F	3.5	29.5	29.5	10.75	1656	-52.0
77	Gehlen, Horst, Dr.	1786	GER	=74N	+90B	−70N	=35B	−68N	=75B	−72N	−80B	+98N	3.5	28.5	30.0	10.00	1668	-19.0
78	Foeing, Alexander	0	GER	−92N	=86B	+101N	−11B	−37N	+90B	−61N	=91B	=75N	3.5	28.5	30.0	8.50	1670	0.0
79	Satheesh, Dharshini	1663	GER	F	F	=64N	−46B	+86N	+91B	=37N	=51B	−34N	3.5	28.5	28.5	12.25	1804	+52.0
80	Subramanian Meyyappan	1637	IND	=46B	−33N	−54B	−65N	−100B	F	+102N	+77N	+71B	3.5	27.5	27.5	10.25	1696	+16.0
81	Korschunow, Dennis	1796	GER	−23N	=75B	=90N	−84B	+108N	−59B	−70N	=98B	+102B	3.5	24.5	24.5	4.75	1694	-14.6
82	Wesseler, Leo	1711	GER	+54N	+28B	+44N	−5B	−16N	−13B	−39N	F	F	3.0	40.0	40.0	14.50	1808	+30.8
83	Wirtjes, Edzard	1687	GER	=4B	−34N	=26B	+54N	=67B	=38N	−47B	−64N	−65B	3.0	39.5	43.0	15.00	1698	+2.0
84	Hetman, Bohdan	0	GER	−18B	+105N	−45B	+81N	−25B	−47N	F	+65N	−38B	3.0	33.0	33.5	8.00	1694	0.0
85	Wehling, Ulrich	1804	GER	+104N	−23B	−10N	=93B	=75N	F	=42B	=58B	−59N	3.0	30.0	30.5	7.50	1617	-35.4
86	Gehlen, Bernd	1732	GER	−14B	=78N	=94B	−60N	−79B	−52N	+104B	=96N	=90B	3.0	27.5	28.0	5.50	1549	-24.8
87	Blume, Jannik	0	GER	−20B	−61N	−52B	F	−88N	+104B	+90N	+92B	−56N	3.0	26.5	26.5	5.00	1606	0.0
88	Fisun, Ivan	1628	GER	−55B	−91N	−73B	=100N	+87B	−54N	=96B	−90N	+104N	3.0	24.0	24.5	5.25	1508	-30.4
89	Schmidt, Merle Laureen	1635	GER	F	−38N	−63B	+97N	−18B	+96N	=50B	F	−55N	2.5	30.0	30.0	5.75	1598	-10.8
90	Althoff, Jasper	1634	GER	F	−77N	=81B	−43N	=54B	−78N	−87B	+88B	=86N	2.5	28.5	28.5	8.50	1718	+23.6
91	Werner, Andreas, Dr.	1784	GER	−72N	+88B	−71N	F	=74B	−79N	=52B	=78N	F	2.5	25.0	25.0	8.75	1645	-22.0
92	Vestrick, Frank	1786	GER	+78B	−1B	−72N	+52N	−42B	−49N	−69B	−87N	F	2.0	34.5	34.5	8.00	1479	-39.0
93	Althoff, Hannes	1658	GER	F	=36B	−39N	=85N	−38B	F	=62N	−55B	=68N	2.0	31.5	31.5	7.75	1634	-9.6
94	Pauli, Dirk	0	GER	=38B	−43N	=86N	=51B	−62N	=101B	−56N	F	F	2.0	27.5	27.5	7.00	1601	0.0
95	Rack, Bruno	1708	GER	−6N	+96B	+46N	−28B	F	−24B	F	F	F	2.0	24.0	24.0	6.50	1654	-5.0
96	Maier, Markus	0	GER	−19N	−95N	F	−56B	F	−89B	=88N	=86B	+97N	2.0	22.0	22.0	4.50	1545	0.0
97	Karaschewski, Kevin	1691	GER	=64B	−3N	−7N	−89B	+104N	F	−54B	−52N	−96B	1.5	32.5	33.0	2.50	1568	-22.2
98	Kasperski, Achim	1610	GER	−76N	−39B	−56N	+104B	−101N	F	−64B	=81N	−77B	1.5	26.0	26.0	2.25	1518	-17.2
99	Gemen, Simon	0	GER	−24N	−29N	=65B	+101B	−55N	F	F	F	F	1.5	23.5	23.5	3.50	1608	0.0
100	Barhoum, Diana	0	GER	−21N	F	−49B	=88B	+80N	F	F	F	F	1.5	18.5	18.5	5.00	1598	0.0
101	Topal, Batuhan	1719	GER	F	−13N	−78B	−99N	+98B	=94N	−73B	F	F	1.5	18.0	18.0	2.50	1764	+2.2
102	Satheesh, Yazhini	1478	GER	F	F	−35N	−48B	+105B	−65N	−80B	F	−81N	1.0	22.5	22.5	0.50	1467	-4.0
103	Peters, Tobias	1732	GER	−53N	F	F	−36B	=50B	F	F	F	F	0.5	23.5	23.5	2.25	1638	-6.0
104	Sidorovs, Timurs	1599	LAT	−85B	−51N	=105B	−98N	−97B	−87N	−86N	F	−88B	0.5	20.0	20.0	0.25	1284	-80.4
105	Klug, Thomas Sebastian	1714	GER	−8N	−84B	=104N	−75B	−102N	F	F	F	F	0.5	14.0	14.0	0.25	1346	-70.0
106	Bajelani, Arad	1682	GER	−12N	=7B	F	F	F	F	F	F	F	0.5	12.5	12.5	3.25	1758	+5.2
107	Wigger, Niklas	1965	GER	=47B	F	F	F	F	F	F	F	F	0.5	4.5	4.5	2.25	1732	-11.6
108	Voelker, Andreas, Dr.	1718	GER	F	−12B	−28N	−26N	−81B	F	F	F	F	0.0	22.0	22.0	0.00	1058	-50.4

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Luccone, ConstantinGER
+195.2
6.5 pts · #5
2Unkel, JariGER
+122.4
6.0 pts · #11
3Wilmes, NiklasGER
+117.2
5.5 pts · #14

Top rating losers

1Waluga, KilianGER
-98.0
4.5 pts · #75
2Sidorovs, TimursLAT
-80.4
0.5 pts · #106
3Klug, Thomas SebastianGER
-70.0
0.5 pts · #107

Biggest upsets

R3+277 Elo gap
Luccone, Constantin1583 beat Hirschmueller, Bennet1860
R1+270 Elo gap
Hund, Reinhard1762 beat Nattermueller, Irina2032
R2+241 Elo gap
Meis, Jonas1667 beat Meyer, Ulrich1908