Weekendtoernooi Groninger Combinatie 2025

SwissStandard

79 players participated in this 7-round tournament, held from 29 May 2025 to 01 Jun 2025 in Groningen, Netherlands. 7 titled players from 5 federations. Top 10 Elo average was 2208, and top seed was Nick Maatman (🇳🇱 NED, IM, 2405).

Nick Maatman (🇳🇱 NED, IM, 2405) won with 5.5/7, ahead of Vadim Cernov (5.5) and Yong Hoon De Rover (5.0). Maatman took the lead from round 6, winning on tie-break.

The biggest upset came in round 2: Annelies Van den Heuvel (1716) beat Bram Baarspul (2018), a +302-point gap.

Location

🇳🇱Groningen, Netherlands

Dates

29 May 2025 → 01 Jun 2025

Time control

Standard: 90 minutes with 30 second increment from move 1

System

Swiss · 7 rounds

Top seed

🇳🇱IMNick Maatman2405

Avg top 10

2,208

Participants

Titled players · 7

IM×3

FM×3

CM×1

Federations · 5 represented

🇳🇱Netherlands×66

🇩🇪Germany×9

🇪🇸Spain×1

🇸🇪Sweden×1

🇷🇴Romania×1

Top 3

🥇
IMNick Maatman
🇳🇱NED·2405
5.5pts·2392perf+0.6
🥈
IMVadim Cernov
🇷🇴ROU·2296
5.5pts·2302perf+2.1
🥉
IMYong Hoon De Rover
🇳🇱NED·2318
5.0pts·2268perf-1.5

How it unfolded

Top 6 · 7 rounds

Tight race until R6; 2 players tied at 5.5/7, decided on Buchholz. Title race narrowed from 3 co-leaders at R4 to 2 at the finish.

Co-leaders

Maatman5.5Cernov5.5Groenewoud5Ten Dam5De Rover5Jellema5— ex-leaders:Cernovled R5, #8

R6 · LEADER CHANGE01 Jun

IM Nick Maatman takes the sole lead (5.0/6).

R7 · TIEBREAK CLUSTER

2 players finish on 5.5/7. Maatman takes the title on Buchholz Cut1 (28.0).

R3 · HEAD-TO-HEAD · WINNER VS 2ND

IM Nick Maatman drew with IM Vadim Cernov (Black).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1IMNick Maatman	*	½	—	—
2IMVadim Cernov	½	*	½	—
3Joel Groenewoud	—	½	*	—
4FMBram Ten Dam	—	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	R6	R7	Pts	Bu C1	Bu	SB	Perf	Δ
1	Maatman, NickIM	2405	NED	+29N	+31B	=2N	=3B	+30N	+5B	=6N	5.5	28.0	31.5	23.75	2392	+0.6
2	Cernov, VadimIM	2296	ROU	+47B	+33N	=1B	=9N	+11B	=4N	+13B	5.5	27.5	30.5	23.00	2302	+2.1
3	De Rover, Yong HoonIM	2318	NED	+36N	+17B	+10B	=1N	−5N	=9B	+14N	5.0	28.5	32.0	22.00	2268	-1.5
4	Groenewoud, Joel	2168	NED	−10N	+75B	+22N	+21B	+6N	=2B	=5N	5.0	28.0	29.0	19.25	2234	+24.5
5	Cernov, HenrikFM	2325	GER	=11B	+20N	+44B	+34N	+3B	−1N	=4B	5.0	27.5	30.5	20.25	2261	-4.0
6	Jellema, Pieter	2133	NED	+77B	=9N	+26B	+16N	−4B	+18N	=1B	5.0	27.5	28.5	18.50	2233	+38.0
7	Ten Dam, BramFM	2113	NED	+23B	−10N	+47B	+30B	=9N	=12B	+20N	5.0	25.0	28.0	19.00	2084	-6.5
8	Jakovlev, Saveliy	2020	NED	=12N	=22B	+35N	=10B	=44N	+42B	+23N	5.0	24.0	27.0	19.00	2046	+10.8
9	Van 't Hof, EricCM	2066	NED	+24N	=6B	+56N	=2B	=7B	=3N	=15B	4.5	29.0	31.5	19.00	2119	+13.6
10	Schrader, Jeroen	1936	NED	+4B	+7B	−3N	=8N	+34B	−13B	+37N	4.5	28.0	31.5	19.50	2164	+83.2
11	Wierenga, Jael	1916	NED	=5N	=18B	+32N	+31B	−2N	+30B	=12N	4.5	26.0	29.5	17.25	2131	+30.8
12	Visser, Berend	1838	NED	=8B	−16N	+57B	+46N	+25B	=7N	=11B	4.5	26.0	28.5	16.75	2043	+75.6
13	Knol, Geon	2063	NED	=19N	+35B	−30N	+65B	+45B	+10N	−2N	4.5	24.0	26.0	15.00	2034	-3.0
14	Aden, Tammo	2086	GER	−35N	+27B	=19N	+39B	+36B	+32N	−3B	4.5	23.5	27.0	16.50	2008	-10.0
15	Van Foreest, Pieter	1799	NED	+68N	−21B	+49N	=24B	=31N	+19B	=9N	4.5	23.0	25.0	15.00	1953	+28.6
16	Pellikaan, Govert	0	NED	=42N	+12B	+48N	−6B	−32N	+65B	+40B	4.5	23.0	25.0	14.75	2097	+17.6
17	Valiente, Paulo	2027	NED	+41B	−3N	+70B	=45N	=56B	=28N	+44B	4.5	21.0	22.5	12.75	1961	-9.2
18	Kools, Thomas	2061	NED	=20B	=11N	+55B	=36N	+26B	−6B	=28N	4.0	25.0	28.0	15.00	1964	-16.0
19	Aden, Meino	1942	GER	=13B	=25N	=14B	=26N	+46B	−15N	+48B	4.0	24.5	27.5	14.50	1971	+6.0
20	Van Foreest, Nanne	1926	NED	=18N	−5B	=37N	+58B	+52N	+33B	−7B	4.0	24.0	26.5	12.75	2002	+26.0
21	Boersma, David	1920	SWE	−44B	+15N	+63B	−4N	=40N	+43B	=27B	4.0	23.5	25.5	13.75	1910	-1.0
22	Hendriks, Peter	1963	NED	=78B	=8N	−4B	+27N	+39B	−44N	+46N	4.0	23.5	24.0	13.25	1979	+3.6
23	Kolijn, David	1923	NED	−7N	−46B	+54N	+43B	+61N	+45B	−8B	4.0	22.5	25.0	12.00	1889	-10.4
24	Jovanovic, Luka L	1744	NED	−9B	+57N	=25B	=15N	−33N	+59B	+45N	4.0	22.0	24.5	12.25	1894	+21.2
25	Ambrona Navarro, Himar	2083	ESP	=75N	=19B	=24N	+48B	−12N	=35B	+61N	4.0	21.5	22.5	11.75	1910	-56.4
26	Aden, Keno	1863	GER	+58N	+73B	−6N	=19B	−18N	=34B	+56N	4.0	21.5	22.5	9.75	1947	+15.8
27	Van den Bos, Frans Pieter	1823	NED	+49N	−14N	=71B	−22B	+66N	+31B	=21N	4.0	21.0	22.5	11.25	1934	+14.0
28	Almefalani, Abdulhay	1772	NED	−34N	−48B	+67N	+37B	+70N	=17B	=18B	4.0	20.5	22.0	11.25	1908	+39.2
29	Zuiderweg, Edwin	1945	NED	−1B	=70N	+52B	F	=65N	+38N	+32B	4.0	19.0	19.0	11.75	1993	+4.6
30	De Boer, Robert	1883	NED	+71B	+50N	+13B	−7N	−1B	−11N	=34N	3.5	26.0	27.5	10.75	1937	+4.6
31	Blok, Xaveer	2050	NED	+55B	−1N	+38B	−11N	=15B	−27N	+57B	3.5	25.0	27.5	11.25	1908	-51.6
32	Haschke, Simon	0	GER	+52B	=38N	−11B	+41N	+16B	−14B	−29N	3.5	24.5	27.5	12.75	1917	0.0
33	Jelic, Bruno	1976	NED	+40B	−2B	−45N	+38N	+24B	−20N	=39B	3.5	24.0	27.0	12.75	1902	-13.8
34	Clemens, AdrianFM	2054	NED	+28B	=44N	+46B	−5B	−10N	=26N	=30B	3.5	24.0	27.0	12.25	1907	-26.0
35	Huiskes, Mathijs	1924	NED	+14B	−13N	−8B	+50N	+48B	=25N	F	3.5	24.0	24.0	12.50	2011	+11.4
36	Faber, Ab	1925	NED	−3B	+53N	+64B	=18B	−14N	+57N	F	3.5	21.0	21.0	9.50	1961	+3.8
37	Hoogeboom, Boudewijn	1700	NED	+69B	−55N	=20B	−28N	+64B	+47N	−10B	3.5	20.5	22.5	9.00	1781	+11.4
38	Van der Meer, Henk	1832	NED	+60N	=32B	−31N	−33B	+54N	−29B	+59N	3.5	20.0	22.5	9.75	1787	-6.6
39	Van Happen, Niels	1773	NED	+67B	−47N	+51B	−14N	−22N	+71B	=33N	3.5	20.0	21.5	8.25	1747	-4.6
40	Baarspul, Bram	2018	NED	−33N	−56B	+62N	+78N	=21B	+50B	−16N	3.5	20.0	20.5	8.00	1800	-56.4
41	Huizinga, Egbert	1856	NED	−17N	=45B	=58N	−32B	=63B	+73N	+60N	3.5	18.0	19.0	7.25	1790	-9.0
42	Aden, Dagmar	1809	GER	=16B	F	F	+63N	+49B	−8N	+53B	3.5	17.5	17.5	10.25	1919	+11.4
43	Bosveld, Mattias	1747	NED	=64B	−63N	+68B	−23N	+72B	−21N	+67B	3.5	16.0	17.5	6.50	1590	-21.2
44	Elsinga, Brian	1820	NED	+21N	=34B	−5N	F	=8B	+22B	−17N	3.0	26.0	27.0	12.25	2034	+31.4
45	Qatina, Waheeb	1722	NED	+79B	=41N	+33B	=17B	−13N	−23N	−24B	3.0	24.0	24.0	7.50	1811	+13.6
46	Luong, Thao	1750	NED	+51B	+23N	−34N	−12B	−19N	+49N	−22B	3.0	23.0	26.0	10.00	1796	+13.2
47	Van Dam, Nathan	1907	NED	−2N	+39B	−7N	=61B	+60N	−37B	=50N	3.0	23.0	25.5	8.75	1830	-29.6
48	Schuttevaer, Tim	1801	NED	+72B	+28N	−16B	−25N	−35N	+51B	−19N	3.0	23.0	24.5	8.50	1751	-16.4
49	Ma, Ying Hao	1649	NED	−27B	+79N	−15B	+53N	−42N	−46B	+71N	3.0	19.5	19.5	4.50	1484	-39.6
50	De Leur, Wouter	0	NED	+66N	−30B	=75N	−35B	+74B	−40N	=47B	3.0	16.5	17.5	5.00	1735	0.0
51	Duindam, Hedde	1550	NED	−46N	+66B	−39N	−54B	+69N	−48N	+73B	3.0	16.5	17.5	5.00	1502	-10.8
52	Prijs, Xander	1800	NED	−32N	+74B	−29N	+64N	−20B	F	+63B	3.0	16.5	16.5	5.00	1794	+1.0
53	Van Dijk, Youp	0	NED	+74N	−36B	−77N	−49B	+62N	+68B	−42N	3.0	15.5	16.5	5.50	1612	0.0
54	Weerts, Rene	1701	NED	F	−64N	−23B	+51N	−38B	+74N	+70B	3.0	15.0	15.0	5.50	1701	0.0
55	De Vries, Arjan	1864	NED	−31N	+37B	−18N	+73B	+71N	F	F	3.0	13.5	13.5	6.00	1875	+0.8
56	Van den Heuvel, Annelies	1716	NED	+59B	+40N	−9B	F	=17N	F	−26B	2.5	19.0	19.0	8.25	1907	+16.0
57	Hardeman, Imara	1719	NED	+76N	−24B	−12N	=66B	+73N	−36B	−31N	2.5	18.5	19.5	3.00	1609	-28.4
58	Hoecker, Horst	1689	GER	−26B	+72N	=41B	−20N	−59B	=64N	=68N	2.5	18.0	19.5	5.25	1622	-9.6
59	Haschke, Oliver	0	GER	−56N	+62B	−61N	=60B	+58N	−24N	−38B	2.5	17.5	20.0	6.25	1544	0.0
60	Van t Riet, Flip	1625	NED	−38B	+69N	−65B	=59N	−47B	+72N	−41B	2.5	16.5	18.0	4.75	1055	-33.6
61	Karsdorp, Nico	1817	NED	−73N	F	+59B	=47N	−23B	+63N	−25B	2.5	16.5	16.5	6.00	1700	-16.6
62	Sarathbabu, Mrityunjay	0	NED	−70B	−59N	−40B	+76N	−53B	=69N	+74B	2.5	13.5	14.5	3.00	1641	0.0
63	Haase, Jelle	1645	GER	=65N	+43B	−21N	−42B	=41N	−61B	−52N	2.0	20.0	22.0	6.25	1667	+5.2
64	Hoogerwaard, Samantha	1619	NED	=43N	+54B	−36N	−52B	−37N	=58B	F	2.0	19.0	19.0	6.00	1635	+2.8
65	Pouw, Marcel	1824	NED	=63B	F	+60N	−13N	=29B	−16N	F	2.0	17.5	17.5	5.50	1780	-6.4
66	Sarathbabu, Sekar	0	NED	−50B	−51N	+79B	=57N	−27B	−67N	=72B	2.0	16.0	16.0	2.00	1546	0.0
67	Dimitrovski, Dimitar	0	NED	−39N	F	−28B	−72N	+76B	+66B	−43N	2.0	15.5	15.5	3.00	964	0.0
68	Kempenaar, Jane	1587	NED	−15B	F	−43N	=69B	+79N	−53N	=58B	2.0	15.5	15.5	2.25	1582	-1.6
69	De Vries, Christiaan	0	NED	−37N	−60B	F	=68N	−51B	=62B	+76N	2.0	14.5	14.5	3.25	1294	0.0
70	Mostertman, Johan	1806	NED	+62N	=29B	−17N	F	−28B	F	−54N	1.5	18.0	18.0	4.50	1539	-24.4
71	Bakker, Hannah	0	NED	−30N	+76B	=27N	F	−55B	−39N	−49B	1.5	18.0	18.0	3.00	1432	0.0
72	FIDE 40121771	0	—	−48N	−58B	F	+67B	−43N	−60B	=66N	1.5	15.5	15.5	3.00	916	0.0
73	De Kleine, Rick	1687	NED	+61B	−26N	F	−55N	−57B	−41B	−51N	1.0	18.5	18.5	2.50	1505	-51.2
74	Luijmes, Henk	1474	NED	−53B	−52N	+76B	F	−50N	−54B	−62N	1.0	15.5	15.5	1.00	951	-6.8
75	Hoogeveen, Rienk	1956	NED	=25B	−4N	=50B	F	F	F	F	1.0	12.0	12.0	3.50	1933	-1.2
76	Van Mulken, Onno	0	NED	−57B	−71N	−74N	−62B	−67N	+79B	−69B	1.0	11.5	11.5	0.00	1419	0.0
77	Kanters, Cor	1977	NED	−6N	F	+53B	F	F	F	F	1.0	11.0	11.0	3.00	1333	-5.8
78	Balje, Jan	2149	NED	=22N	F	F	−40B	F	F	F	0.5	7.5	7.5	2.00	1798	-18.4
79	Ten Dam, Thijs	1439	NED	−45N	−49B	−66N	F	−68B	−76N	F	0.0	11.0	11.0	0.00	853	-27.6

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Schrader, JeroenNED
+83.2
4.5 pts · #12
2Visser, BerendNED
+75.6
4.5 pts · #11
3Almefalani, AbdulhayNED
+39.2
4.0 pts · #33

Top rating losers

1Baarspul, BramNED
-56.4
3.5 pts · #62
2Ambrona Navarro, HimarESP
-56.4
4.0 pts · #17
3Blok, XaveerNED
-51.6
3.5 pts · #29

Biggest upsets

R2+302 Elo gap
Van den Heuvel, Annelies1716 beat Baarspul, Bram2018
R3+254 Elo gap
Qatina, Waheeb1722 beat Jelic, Bruno1976
R5+245 Elo gap
Visser, Berend1838 beat Ambrona Navarro, Himar2083