Chessfestival Groningen 2025 Compact Senioren

Open SwissStandard

47 players participated in this 5-round tournament, held from 26 Dec 2025 to 30 Dec 2025 in Groningen, Netherlands. 1 titled players from 3 federations. Top 10 Elo average was 2065, and top seed was Paul Motwani (🇬🇧 SCO, GM, 2405).

Dolf Wissmann (🇳🇱 NED, 1973) won with 4.5/5, ahead of Rob Kamminga (4.0) and Paul Motwani (4.0). Wissmann won solo starting round 4.

The biggest upset came in round 3: Dolf Wissmann (1973) beat Paul Motwani (GM, 2405), a +432-point gap.

Location

🇳🇱Groningen, Netherlands

Dates

26 Dec 2025 → 30 Dec 2025

Time control

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

System

Swiss · 5 rounds

Top seed

🇬🇧GMPaul Motwani2405

Avg top 10

2,065

Participants

Titled players · 1

GM×1

Federations · 3 represented

🇳🇱Netherlands×44

🇩🇪Germany×2

🇬🇧Scotland×1

Top 3

🥇
Dolf Wissmann
🇳🇱NED·1973
4.5pts·2360perf+40.6
🥈
Rob Kamminga
🇳🇱NED·1901
4.0pts·2109perf+25.8
🥉
GMPaul Motwani
🇬🇧SCO·2405
4.0pts·2245perf-6.0

How it unfolded

Top 6 · 5 rounds

Dolf Wissmann led from R4; +0.5-point edge over the runner-up.

Co-leaders

Wissmann4.5Dijkhuizen4Motwani4Kamminga4Arndt3.5De Vries3.5

R4–R5 · LEAD HELD

Dolf Wissmann held the sole lead from R4 through R5 without losing it.

R1–R4 · WIN STREAK

Dolf Wissmann won 4 in a row (R1–R4).

Key matchups · top 4

Head-to-head between the four finishers

Player	1	2	3	4
1Dolf Wissmann	*	—	1	½
2Klaas Dijkhuizen	—	*	—	—
3GMPaul Motwani	0	—	*	—
4Rob Kamminga	½	—	—	*

Grille américaine

#	Player	Elo	Fed	R1	R2	R3	R4	R5	Pts	Bu C1	Bu	SB	Perf	Δ
1	Wissmann, Dolf	1973	NED	+34N	+9B	+3N	+7B	=2N	4.5	14.0	15.5	13.50	2360	+40.6
2	Kamminga, Rob	1901	NED	+28B	=13N	+18B	+11N	=1B	4.0	13.0	15.0	11.25	2109	+25.8
3	Motwani, PaulGM	2405	SCO	+32B	+19N	−1B	+9N	+12B	4.0	13.0	14.5	10.00	2245	-6.0
4	Dijkhuizen, Klaas	1911	NED	+20N	=18B	=24N	+23B	+7N	4.0	10.0	12.0	9.75	2048	+32.8
5	De Vries, Leon	2061	NED	=10B	+38N	+14B	−12N	+8B	3.5	12.0	13.5	9.00	2023	-3.4
6	Arndt, Olaf	1956	GER	+30B	−8N	+22B	=21N	+25B	3.5	9.5	11.5	7.25	2069	+15.2
7	Faber, Ab	1936	NED	+22B	+17N	+8B	−1N	−4B	3.0	14.5	16.5	8.00	1990	+7.6
8	Dijkstra, Matthijs	2041	NED	+33N	+6B	−7N	+10B	−5N	3.0	13.0	14.5	8.00	2002	-4.6
9	Hoogeveen, Rienk	1974	NED	+26N	−1N	+28B	−3B	+22N	3.0	12.5	14.5	6.00	1980	-1.2
10	Vermeulen, Frans	1836	NED	=5N	=15B	+19B	−8N	+36B	3.0	12.0	13.5	7.25	2035	+26.2
11	Faber, Hugo	1999	NED	+27N	=16B	+37N	−2B	=14N	3.0	12.0	13.5	6.50	1916	-10.2
12	Uittenbogaard, Hans	1827	NED	F	+36N	+13B	+5B	−3N	3.0	12.0	12.0	8.00	2149	+31.0
13	Karsdorp, Nico	1807	NED	+46N	=2B	−12N	=35B	+26N	3.0	10.5	10.5	4.75	1671	-6.8
14	Van de Griend, Johan	1856	NED	=41N	+44B	−5N	+27B	=11B	3.0	9.5	10.0	4.50	1932	+10.2
15	Leenes, Robert	2000	NED	F	=10N	+39B	=25N	+18B	3.0	9.0	9.0	6.50	2017	+1.6
16	Van den Berg, Jaap	1839	NED	+29B	=11N	F	=24B	+31N	3.0	9.0	9.0	6.50	1996	+15.8
17	Van den Bos, Frans Pieter	1818	NED	+43N	−7B	−40N	+41B	+23N	3.0	7.5	8.5	4.00	1898	+10.4
18	Spears, Russell	1843	NED	+42B	=4N	−2N	+37B	−15N	2.5	12.5	13.5	4.50	1857	+2.2
19	Lindeman, Johan	1982	NED	+23N	−3B	−10N	=20B	+33N	2.5	11.5	13.0	4.75	1902	-11.8
20	Eveleens, Ed	1727	NED	−4B	+42N	−25B	=19N	+32B	2.5	10.0	11.0	3.75	1836	+13.8
21	Van der Leest, Bert	2086	NED	+31B	F	+32N	=6B	F	2.5	9.0	9.0	5.25	2088	+1.2
22	Sikkes, Piet	1849	NED	−7N	+26B	−6N	+43B	−9B	2.0	11.5	12.5	3.00	1677	-17.2
23	Jonkheer, Marco	1706	NED	−19B	+33B	+34N	−4N	−17B	2.0	11.0	12.5	3.00	1799	+22.0
24	Bosveld, Henk	1826	NED	F	+35N	=4B	=16N	F	2.0	11.0	11.0	5.00	1875	+2.8
25	Rondhuis, Jaap	1864	NED	F	=40B	+20N	=15B	−6N	2.0	10.5	10.5	4.75	1952	+9.0
26	Van Haaster, Henk	0	NED	−9B	−22N	+42B	+38N	−13B	2.0	9.5	10.5	2.50	1741	0.0
27	De Ridder, Henk	1777	NED	−11B	=29N	+47B	−14N	=35N	2.0	9.5	9.5	1.75	1693	-9.8
28	De Jong, Ti	1725	NED	−2N	+46B	−9N	−33B	+44N	2.0	9.0	9.0	0.50	1669	-6.0
29	Braun, Eric	1692	NED	−16N	=27B	=33N	=32B	=37N	2.0	8.0	9.5	3.25	1752	+7.8
30	Visser, Jos	1758	NED	−6N	=34B	=38B	−39N	+42B	2.0	8.0	9.0	2.50	1714	-12.8
31	Ris, Gert-Jan	1693	NED	−21N	=43B	=44N	+46B	−16B	2.0	7.0	7.0	0.75	1620	-9.2
32	Van der Graaf, Jaap	1798	NED	−3N	+41B	−21B	=29N	−20N	1.5	11.0	12.0	2.00	1741	-11.0
33	Von Kreyfelt, Ernst	1859	NED	−8B	−23N	=29B	+28N	−19B	1.5	9.5	11.5	3.00	1680	-23.8
34	Hoekstra, Carl	1787	NED	−1B	=30N	−23B	F	+43N	1.5	9.5	9.5	2.00	1675	-12.8
35	Koster, Bert	0	NED	F	−24B	=41N	=13N	=27B	1.5	8.0	8.0	3.00	1703	0.0
36	De Jong, Lieuwe	1730	NED	F	−12B	=43N	+44B	−10N	1.5	7.5	7.5	1.00	1660	-16.0
37	De Boer, Albert	1848	NED	F	+47N	−11B	−18N	=29B	1.5	7.5	7.5	1.00	1690	-17.0
38	Wassenaar, Meine	1811	NED	F	−5B	=30N	−26B	+46N	1.5	7.5	7.5	1.00	1717	-10.4
39	Hofstee, Piet	1752	NED	F	=45B	−15N	+30B	F	1.5	5.5	5.5	2.25	1877	+9.6
40	Hulshof, Peter	2126	NED	F	=25N	+17B	F	F	1.5	5.0	5.0	4.00	2034	-3.6
41	Mostertman, Johan	1750	NED	=14B	−32N	=35B	−17N	F	1.0	9.0	9.0	2.25	1550	-14.0
42	Smit, Tom	1615	NED	−18N	−20B	−26N	+47B	−30N	1.0	9.0	9.0	0.00	1533	-9.4
43	Pos, Joshua	1611	GER	−17B	=31N	=36B	−22N	−34B	1.0	8.5	10.0	1.75	1535	-8.8
44	Schrijvers, Kees	1716	NED	F	−14N	=31B	−36N	−28B	0.5	8.5	8.5	1.00	1429	-26.0
45	Van den Berg, Cees	1872	NED	F	=39N	F	F	F	0.5	1.5	1.5	0.75	1752	-3.2
46	Versendaal, Jerome	0	NED	−13B	−28N	F	−31N	−38B	0.0	8.5	8.5	0.00	959	0.0
47	Kempenaar, Jane	1574	NED	F	−37B	−27N	−42N	F	0.0	4.5	4.5	0.00	951	-16.8

Key insights

Biggest movers and upsets — the story behind the numbers.

Top rating gainers

1Wissmann, DolfNED
+40.6
4.5 pts · #1
2Dijkhuizen, KlaasNED
+32.8
4.0 pts · #2
3Uittenbogaard, HansNED
+31.0
3.0 pts · #11

Top rating losers

1Schrijvers, KeesNED
-26.0
0.5 pts · #42
2Von Kreyfelt, ErnstNED
-23.8
1.5 pts · #33
3Sikkes, PietNED
-17.2
2.0 pts · #37

Biggest upsets

R3+432 Elo gap
Wissmann, Dolf1973 beat GMMotwani, Paul2405
R4+234 Elo gap
Uittenbogaard, Hans1827 beat De Vries, Leon2061
R2+153 Elo gap
Jonkheer, Marco1706 beat Von Kreyfelt, Ernst1859