51e Open Kampioenschap van Utrecht - Groep B

Open SwissStandard

98 players participated in this 6-round tournament, held from 15 May 2026 to 17 May 2026 in Utrecht, Netherlands. 1 titled players from 7 federations. Top 10 Elo average was 1972, and top seed was Jan Maarten Van den Boogaart (🇳🇱 NED, 2016).

Thai Ngoc Tuong Minh (🇻🇳 VIE, WFM, 1932) won with 5.5/6, ahead of Saffran Mendelsohn (5.0) and Jimmy Geboers (5.0). Minh clinched sole first place in the final round.

The biggest upset came in round 4: Saffran Mendelsohn (1767) beat Jan Maarten Van den Boogaart (2016), a +249-point gap.

Location

🇳🇱Utrecht, Netherlands

Dates

15 May 2026 → 17 May 2026

Time control

Standard: All Moves in 110 Min. Incr. 10 Sec. / /

System

Swiss · 6 rounds

Top seed

🇳🇱Jan Maarten Van den Boogaart2016

Avg top 10

1,972

Participants

Titled players · 1

WFM×1

Federations · 7 represented

🇳🇱Netherlands×92

🇧🇪Belgium×1

🇮🇹Italy×1

🇵🇱Poland×1

🇻🇪Venezuela×1

🇻🇳Vietnam×1

🇹🇷Turkiye×1

Top 3

🥇
WFMThai Ngoc Tuong Minh
🇻🇳VIE·1932
5.5pts·2271perf+36.6
🥈
Saffran Mendelsohn
🇳🇱NED·1767
5.0pts·2200perf+129.6
🥉
Jimmy Geboers
🇧🇪BEL·1968
5.0pts·2175perf+29.0

How it unfolded

Top 6 · 6 rounds

WFM Thai Ngoc Tuong Minh led from R6; +0.5-point edge over the runner-up. Title race converged from 2 co-leaders at R4 to 1 by R6.

Co-leaders

Minh5.5Mendelsohn5Geboers5Roebers5Muskens5Wuijts4.5

R6 · LEADER CHANGE17 May

WFM Thai Ngoc Tuong Minh takes the sole lead (5.5/6).

WIN STREAKS · 2 top finishers

WFM Thai Ngoc Tuong Minh 3 wins (R4–R6)Jimmy Geboers 5 wins (R1–R5)

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1WFMThai Ngoc Tuong Minh	*	—	1	—
2Saffran Mendelsohn	—	*	—	½
3Jimmy Geboers	0	—	*	—
4Bregje Roebers	—	½	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	Pts	Bu C1	Bu	SB	Perf	Δ
1	Thai Ngoc Tuong MinhWFM	1932	VIE	+50N	+18B	=9N	+24B	+10N	+3B	5.5	20.0	22.5	20.50	2271	+36.6
2	Mendelsohn, Saffran	1767	NED	+97B	=22N	+28B	+33N	=5B	+11N	5.0	19.0	19.0	14.75	2200	+129.6
3	Geboers, Jimmy	1968	BEL	+52B	+55N	+46B	+19N	+12B	−1N	5.0	18.0	20.5	15.00	2175	+29.0
4	Muskens, Mink	1870	NED	+36N	=49B	=17N	+16B	+15N	+98B	5.0	17.5	17.5	14.25	2284	+46.8
5	Roebers, Bregje	1953	NED	+93N	=81B	+76B	+20N	=2N	+13B	5.0	15.5	16.0	12.75	2134	+50.0
6	Wuijts, Johan	1990	NED	=80B	+35N	=13B	+49N	=22B	+37N	4.5	16.0	17.5	13.00	2104	+17.2
7	Harmsen, Melvin	0	NED	=47N	+65B	−32N	+63B	+18N	+26B	4.5	14.5	16.5	12.25	1931	0.0
8	Wijgers, Ben	1947	NED	F	+64B	+81N	=32B	+44N	+12N	4.5	13.5	13.5	12.00	2269	+33.8
9	Saricicek, Ahmet Furkan	1915	TUR	+60B	+56N	=1B	−10B	+58N	=14N	4.0	18.5	21.0	12.25	2030	+36.4
10	Zwamborn, Thom	1954	NED	+38B	=53N	+77B	+9N	−1B	=22N	4.0	18.5	20.0	11.50	2026	+11.2
11	Kaufmann, Thomas	1965	NED	=65N	=16B	+66N	+23B	+32N	−2B	4.0	17.5	19.5	11.50	1998	+5.2
12	Woldhuis, Marnik	1939	NED	+85B	+48N	+63B	+21N	−3N	−8B	4.0	17.5	18.5	9.00	2022	+26.4
13	Jara Segovia, Jesus Javier	1940	VEN	=86N	+96B	=6N	+41B	+21B	−5N	4.0	17.0	17.0	9.25	2037	+15.2
14	Kompaan, Rick	1930	NED	+57N	+51B	−19N	=18B	+47N	=9B	4.0	16.0	18.5	11.25	1987	+8.6
15	Gassner, Yuri	1962	NED	+68B	−46N	+61B	+53N	−4B	+20N	4.0	16.0	18.0	10.50	2001	+5.8
16	Dam, Karsten	1922	NED	=87B	=11N	+59B	−4N	+76N	+36B	4.0	16.0	17.0	9.50	2015	+29.6
17	Remmerts, John	0	NED	+79B	=76N	=4B	+48N	+19B	F	4.0	14.0	14.0	10.75	1900	0.0
18	De Vroome, Ernest	1841	NED	+25B	−1N	+55B	=14N	−7B	+73N	3.5	20.0	22.0	10.00	2066	+30.2
19	Van Dam, Nathan	1852	NED	+27B	+91N	+14B	−3B	−17N	=21N	3.5	20.0	21.0	10.25	2102	+34.0
20	Nguyen, Paul	1845	NED	=26N	+29B	+34N	−5B	+54N	−15B	3.5	19.0	21.5	10.75	2004	+53.6
21	Romkes, Gosse	1978	NED	+70N	+23B	+37N	−12B	−13N	=19B	3.5	18.0	20.0	10.25	1964	-1.6
22	Uitermark, Imre	1910	NED	+82N	=2B	F	+67B	=6N	=10B	3.5	17.0	17.0	10.25	2022	+30.0
23	Huizer, Olivier	1897	NED	+69B	−21N	+56B	−11N	+48B	=27N	3.5	16.0	18.0	8.75	1954	+9.8
24	Wijnand, Hans	0	NED	=35B	+80N	+75B	−1N	+25B	F	3.5	15.5	15.5	8.50	1957	0.0
25	Van de Poel, Jona	1922	NED	−18N	+50B	+57N	=51B	−24N	+47B	3.5	14.5	17.0	8.75	2000	+10.2
26	Zagema, Jan Sybren	1928	NED	=20B	=84N	+87B	=43N	+46B	−7N	3.5	14.5	15.5	7.25	2000	+9.4
27	Garau, Francesca	1937	ITA	−19N	−66B	+72N	+79B	+38N	=23B	3.5	14.0	15.5	8.25	1862	-10.6
28	Bollaart, Jeroen	1944	NED	=64N	+86B	−2N	−47B	+67N	+53B	3.5	14.0	15.0	6.50	1904	-5.8
29	Koole, David	1932	NED	=84B	−20N	=64B	+66N	+52B	=33N	3.5	13.0	14.0	7.50	1945	+5.6
30	Buzogany, Szabolcs	1876	NED	−34N	=89B	+42N	−58B	+88N	+54B	3.5	12.0	13.0	7.00	1976	+17.0
31	Boughdir, Ilias	1816	NED	−32N	−68N	=90B	+65B	+71N	+46B	3.5	11.5	12.5	7.00	1955	+46.8
32	Boere, Lars	1906	NED	+31B	=33N	+7B	=8N	−11B	F	3.0	19.5	19.5	11.75	1936	+6.8
33	Van den Boogaart, Jan Maarten	2016	NED	+73N	=32B	F	−2B	+35N	=29B	3.0	16.5	16.5	8.25	1950	-8.4
34	Veldhorst, Berend	1953	NED	+30B	=77N	−20B	+40N	−43B	=57N	3.0	15.5	17.0	8.50	1850	-17.2
35	Verhoeff, Timardi	1894	NED	=24N	−6B	=78N	+60N	−33B	+67B	3.0	15.5	17.0	7.00	1901	+1.0
36	Markus, John Raymond	1962	NED	−4B	+79N	−48B	+77N	+70B	−16N	3.0	15.0	16.5	5.00	1811	-21.0
37	Spannring, Peter	1923	NED	+78N	+67B	−21B	F	+51N	−6B	3.0	14.0	14.0	6.00	1965	+12.0
38	Lee, Jungbin	1879	NED	−10N	=72B	=89N	+71N	−27B	+63B	3.0	13.5	14.5	5.50	1870	-1.6
39	Veldhuizen, Dirk	1911	NED	+59B	−63N	−43B	+85N	−41B	+64N	3.0	12.5	13.5	5.50	1837	-12.4
40	Wagener, Florian	1831	NED	−49N	=70B	+65N	−34B	=68N	+88B	3.0	11.5	12.5	5.00	1906	+25.2
41	Uithof, Kasper	1856	NED	F	F	+71B	−13N	+39N	+58B	3.0	11.5	11.5	7.50	2134	+29.6
42	Van Ee, Winston	1937	NED	−48B	=85N	−30B	+89N	=64B	+66N	3.0	11.0	12.0	4.50	1848	-29.2
43	Luong, Thao	1822	NED	F	=88B	+39N	=26B	+34N	F	3.0	10.5	10.5	8.25	2122	+63.2
44	Kakrana, Reyansh	1933	NED	F	F	+84B	+69N	−8B	+45N	3.0	10.5	10.5	6.00	2079	+29.6
45	Van Dijk, Olger	1907	NED	−67N	=78B	+86N	=76B	+63N	−44B	3.0	10.0	11.0	4.50	1852	-8.8
46	Kok, Lennart	1895	NED	+94B	+15B	−3N	=54B	−26N	−31N	2.5	18.5	19.0	5.75	1844	-9.0
47	Van den Hof, Jesse	1881	NED	=7B	−54N	+94B	+28N	−14B	−25N	2.5	18.0	18.5	6.25	1834	-12.8
48	El Khaddari, Lina	1850	NED	+42N	−12B	+36N	−17B	−23N	=68B	2.5	17.5	19.5	7.00	1923	+10.0
49	Schuil, Jeroen	1908	NED	+40B	=4N	F	−6B	=50N	=59B	2.5	17.5	17.5	8.00	1875	-4.6
50	Rosegg, Jaron	1849	NED	−1B	−25N	+74B	+55N	=49B	F	2.5	16.0	16.0	5.75	1916	+9.2
51	Metz, Atze	1836	NED	+74B	−14N	+52B	=25N	−37B	−75N	2.5	15.0	17.0	6.25	1863	+4.0
52	Schroen, Ferry	1885	NED	−3N	+82B	−51N	+78B	−29N	=56B	2.5	15.0	16.5	4.25	1814	-24.8
53	Bettman, Jan	1885	NED	+89B	=10B	=54N	−15B	=92N	−28N	2.5	15.0	16.0	4.75	1833	-9.0
54	De Roos, Radboud	1955	NED	=61N	+47B	=53B	=46N	−20B	−30N	2.5	14.5	17.0	6.25	1820	-22.8
55	Schenkelaars, Robin	1906	NED	+72N	−3B	−18N	−50B	+85N	=76B	2.5	14.5	15.5	3.75	1809	-16.4
56	Van den Berg, Leon	1809	NED	+83N	−9B	−23N	+61B	F	=52N	2.5	14.0	14.0	5.25	1896	+23.6
57	Burer, Audry	1846	NED	−14B	+74N	−25B	F	+80N	=34B	2.5	14.0	14.0	5.00	1922	+10.6
58	Staal, Ryan	1965	NED	−77B	=87N	+93B	+30N	−9B	−41N	2.5	13.0	13.5	4.50	1818	-49.6
59	Van den Burg, Ralf	1834	NED	−39N	+73B	−16N	F	+77B	=49N	2.5	13.0	13.0	4.75	1903	+9.6
60	Klute, Leon	1837	NED	−9N	=62N	F	−35B	+90B	+70N	2.5	12.5	12.5	4.25	1895	+8.0
61	Veenendaal, Loek	1880	NED	=54B	F	−15N	−56N	+84B	+69N	2.5	12.0	12.0	4.25	1883	+0.4
62	Soeterbroek, Jaimy	1902	NED	−63N	=60B	F	+84N	+69B	F	2.5	7.5	7.5	4.25	1924	+2.0
63	Kurtoglu, Devrim	1787	NED	+62B	+39B	−12N	−7N	−45B	−38N	2.0	17.5	20.0	5.50	1836	+12.8
64	Wagenaar, Harm Theo	1867	NED	=28B	−8N	=29N	=88B	=42N	−39B	2.0	17.5	18.5	5.50	1808	-9.0
65	Regeling, Chris	1883	NED	=11B	−7N	−40B	−31N	=95B	+78B	2.0	16.5	17.0	3.75	1782	-14.0
66	Jong, Casijn	1865	NED	−75N	+27N	−11B	−29B	+72N	−42B	2.0	16.0	18.0	5.50	1797	-21.2
67	Kasomoulis, Nikos	1818	NED	+45B	−37N	+68B	−22N	−28B	−35N	2.0	16.0	18.0	5.00	1785	-5.0
68	Meeuwissen, Morris	1880	NED	−15N	+31B	−67N	F	=40B	=48N	2.0	15.0	15.0	6.25	1783	-13.6
69	Van de Pasch, Sil	1842	NED	−23N	+83B	+88N	−44B	−62N	−61B	2.0	13.0	14.0	2.50	1782	-19.2
70	Ismayilov, Uzeyir	1889	NED	−21B	=40N	=85B	+96N	−36N	−60B	2.0	13.0	13.0	2.00	1757	-21.2
71	Van Bavel, Ferdi	1949	NED	−81N	+90B	−41N	−38B	−31B	+84N	2.0	12.0	13.0	2.00	1733	-35.2
72	Mastop, Guido	1815	NED	−55B	=38N	−27B	=90N	−66B	+95N	2.0	12.0	12.5	2.50	1754	-9.4
73	Knol, Noah	1893	NED	−33B	−59N	+82B	F	+87N	−18B	2.0	11.5	11.5	2.50	1802	-25.2
74	Van Wijk, Peter	1913	NED	−51N	−57B	−50N	F	+86B	+77N	2.0	10.0	10.0	2.50	1783	-18.0
75	Mohamedjoesoef, Rafiek	1944	NED	+66B	F	−24N	F	F	+51B	2.0	8.0	8.0	4.50	2651	+14.8
76	Belien, Roan	1868	NED	F	=17B	−5N	=45N	−16B	=55N	1.5	18.5	18.5	4.75	1729	-14.0
77	De Bruijn, Olivier	1882	NED	+58N	=34B	−10N	−36B	−59N	−74B	1.5	15.0	17.0	4.00	1737	-44.4
78	Sybesma, Tjalling	1844	NED	−37B	=45N	=35B	−52N	=83B	−65N	1.5	13.5	15.0	3.75	1706	-41.6
79	Van der Sman, Stefan	0	NED	−17N	−36B	+83N	−27N	=82B	−80B	1.5	13.5	15.0	2.25	1757	0.0
80	Van de Griend, Johan	1893	NED	=6N	−24B	F	F	−57B	+79N	1.5	12.0	12.0	3.75	1725	-8.8
81	Baars, Tije	1869	NED	+71B	=5N	−8B	F	F	F	1.5	11.5	11.5	4.50	1950	+6.8
82	Van Garderen, Ton	1834	NED	−22B	−52N	−73N	+86B	=79N	F	1.5	10.5	10.5	1.75	1695	-14.2
83	Cubuk, Armin	1903	NED	−56B	−69N	−79B	F	=78N	+87B	1.5	8.5	8.5	1.75	1748	-34.8
84	Schenkel, Edward	1849	NED	=29N	=26B	−44N	−62B	−61N	−71B	1.0	15.0	17.0	3.50	1648	-56.4
85	Kostov, Stoyan	1853	NED	−12N	=42B	=70N	−39B	−55B	F	1.0	14.5	14.5	2.50	1676	-42.4
86	De Jong, Mika	1862	NED	=13B	−28N	−45B	−82N	−74N	=92B	1.0	14.0	15.0	2.50	1608	-74.0
87	De Heer, Henk	1843	NED	=16N	=58B	−26N	F	−73B	−83N	1.0	13.5	13.5	3.25	1682	-19.0
88	Burger, Rogier	1925	NED	F	=43N	−69B	=64N	−30B	−40N	1.0	13.5	13.5	2.50	1608	-81.2
89	Kroon, Timo	1776	NED	−53N	=30N	=38B	−42B	F	F	1.0	12.0	12.0	3.25	1701	-14.4
90	Capel, Bas	1876	NED	−91B	−71N	=31N	=72B	−60N	F	1.0	11.0	11.0	2.75	1634	-30.2
91	Blokland, Bent	1952	NED	+90N	−19B	F	F	F	F	1.0	4.5	4.5	1.00	1864	-4.8
92	Van Lingen, Henk	1747	NED	F	F	F	F	=53B	=86N	1.0	3.5	3.5	1.75	1874	+7.0
93	Lee, Jungmin	1878	NED	−5B	=94N	−58N	F	F	F	0.5	8.0	8.0	0.25	1626	-18.4
94	Verheesen, Rene	1778	NED	−46N	=93B	−47N	F	F	F	0.5	5.5	5.5	0.25	1612	-22.4
95	Kazmierczak, Tadeusz	1813	POL	F	F	F	F	=65N	−72B	0.5	4.0	4.0	1.00	1656	-16.0
96	Van Gelder, Jacques	1830	NED	F	−13N	F	−70B	F	F	0.0	6.0	6.0	0.00	1115	-15.4
97	Van der Pas, Paul	1773	NED	−2N	F	F	F	F	F	0.0	5.0	5.0	0.00	967	-10.2
98	Keijzer, Leo	1838	NED	F	F	F	F	F	−4N	0.0	5.0	5.0	0.00	1070	-9.2

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Mendelsohn, SaffranNED
+129.6
5.0 pts · #1
2Luong, ThaoNED
+63.2
3.0 pts · #32
3Nguyen, PaulNED
+53.6
3.5 pts · #22

Top rating losers

1Burger, RogierNED
-81.2
1.0 pts · #84
2De Jong, MikaNED
-74.0
1.0 pts · #86
3Schenkel, EdwardNED
-56.4
1.0 pts · #89

Biggest upsets

R4+249 Elo gap
Mendelsohn, Saffran1767 beat Van den Boogaart, Jan Maarten2016
R6+198 Elo gap
Mendelsohn, Saffran1767 beat Kaufmann, Thomas1965
R3+177 Elo gap
Mendelsohn, Saffran1767 beat Bollaart, Jeroen1944