Chess South Africa Ratings Database

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Personal

Grigor, R (Ruan)

Chess SA id

1080139768

FIDE id

Date of birth

2008-09-11 (U18)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1382.6

Item	Main	Standard	Rapid	Blitz
Rating	1455.6	1444.2	1172	1090.8
Raw rating	1454.8	1443.6	1172	1090.8
Weighted rating	1455.6	1444.2	1172	1090.8
Weighted performance	1360.7	1349.1	0	0
Floor	1007.9	1000	700	700
K-factor	32	32	36	36
Min/Max rating change allowed	115.3	117.2	172.6	193.7
Highest rating	1552.5 2024-02-01	1547 2024-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1507.9 2024-03-01	1500 2024-03-01	1200 2020-01-01	1200 2020-01-01
Highest weighted rating	1507.9 2025-04-01	1500 2025-04-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1552.5 2024-02-01	1547 2024-02-01	1200 2020-01-01	1200 2020-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.1	-0.1	0	0
New rating	1455.5	1444.1	1172	1090.8
Analysis
Rating	1455.6	1444.2	1172	1090.8
Raw rating	1454.8	1443.6	1172	1090.8
Weighted rating	1455.6	1444.2	1172
Weighted performance	1360.7	1349.1	0
K-factor	32	32	36	36
Floor	1007.9	1000	700	700
Max/Min rating change allowed	115.3	117.2	172.6	193.7
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1454.8	1443.6	1172	1090.8
New weighted rating	1455.5	1444.1	1172	1090.8
New weighted performance	1360.3	1348.6	0	0
Temp new rating	1455.5	1444.1	1172	1090.8
Temp new rating +/-	-0.1	-0.1	0	0
Final new rating +/-	-0.1	-0.1	0	0
New rating	1455.5	1444.1	1172	1090.8
New K-factor	32	32	36	36
New floor	1007.9	1000	700	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	41	41	0	0
	29	29	0	0
	45	45	0	0
	72	39	10	23
	0	0	0	0
History	187	154	10	23

Games since
	Main 83	Standard 83		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	1593		204		65
Male	1343		179		58
U18	256		31		8
U18 Male	224		30		8
Standard
	RSA		Province		Region
Overall	1625		215		73
Male	1357		184		63
U18	274		33		8
U18 Male	238		31		8
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	41	22	53.66	31.1	1392.8	1423.9
Standard	41	22	53.66	31.1	1392.8	1423.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	187	100	53.48	29.5	1307.8	1337.3
Standard	154	86	55.84	49.7	1316.1	1365.8
Rapid	10	4.5	45	-42.5	1258.8	1216.3
Blitz	23	9.5	41.3	-73.9	1273.2	1199.3

Date	Main	Standard	Rapid	Blitz
2025-09-30	1454.8	1443.6	1172	1090.8
2025-09-01	1454.8	1443.6	1172	1090.8
2025-08-01	1454.8	1443.6	1172	1090.8
2025-07-01	1454.1	1442.6	1172	1090.8
2025-06-01	1453.2	1442.5	1172	1090.8
2025-05-01	1450.3	1440.3	1172	1090.8
2025-04-01	1495.6	1495.3	1172	1090.8
2025-03-01	1443.3	1431.7	1172	1090.8
2025-02-01	1442.1	1431.3	1172	1090.8
2025-01-01	1424.7	1406.6	1172	1090.8
2024-12-01	1433.3	1417.5	1172	1090.8
2024-11-01	1433.3	1417.5	1172	1090.8
2024-10-01	1433.3	1417.5	1172	1090.8
2024-09-01	1454.5	1438.9	1172	1090.8
2024-08-01	1454.5	1438.9	1172	1090.8
2024-07-01	1497.5	1488.5	1172	1090.8
2024-06-01	1497.5	1488.5	1172	1090.8
2024-08-01	1497.5	1488.5	1172	1090.8
2024-04-01	1507.9	1500	1172	1090.8
2024-03-01	1507.9	1500	1172	1090.8
2024-02-01	1427	1417.7	1172	1090.8
2024-01-01	1427	1417.7	1172	1090.8
2023-12-01	1427	1417.7	1172	1090.8
2023-11-01	1427	1417.7	1172	1090.8

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U18 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	3	Yes	Analysis
2	NMBCU Closed 2025 (U18)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
3	NMBCU Trial 4 2025 (U18)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	Karen Ashworth 2025 (A)	2025-04-26	2025-04-26	Standard	Nelson Mandela Bay (ENM)	5	4	1	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U18 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	8	2	Yes	Analysis
6	NMB 2nd Trials 2025 (U18)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
7	NMBCH Trial 1 2025 (U18)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U18 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	3	Yes	Analysis
2	NMBCU Closed 2025 (U18)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
3	NMBCU Trial 4 2025 (U18)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	Karen Ashworth 2025 (A)	2025-04-26	2025-04-26	Standard	Nelson Mandela Bay (ENM)	5	4	1	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U18 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	8	2	Yes	Analysis
6	NMB 2nd Trials 2025 (U18)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
7	NMBCH Trial 1 2025 (U18)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	5	3	Yes	Analysis
8	Mzansi Interprovincial Youth Chess Championships 2024 (U18 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	6	3	Yes	Analysis
9	NMBCU Closed 2024 (U18)	2024-09-20	2024-09-21	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
10	NMBCU Trial 5 2024 (U18)	2024-08-16	2024-08-17	Standard	Nelson Mandela Bay (ENM)	6	0	0	No	Analysis
11	NMBCU Trials 4 2024 (U18)	2024-07-12	2024-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
12	NMBCU Trials 2 2024 (U18)	2024-04-12	2024-04-13	Standard	Nelson Mandela Bay (ENM)	6	5	2	Yes	Analysis
13	NMBCU Trials 1 2024 (U18)	2024-02-16	2024-02-16	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
14	PECC Club Championship 2023 (Senior)	2023-10-12	2023-11-23	Standard	Nelson Mandela Bay (ENM)	6	1	0	Yes	Analysis
15	Eastern Cape Provincial Individual Championship 2023 (U16 Boys)	2023-10-05	2023-10-06	Standard	Nelson Mandela Bay (ENM)	7	7	3.5	Yes	Analysis
16	Eastern Cape Chess Team Championship 2023 (U16)	2023-10-07	2023-10-08	Standard	Sarah Baartman (ESB)	5	5	5	Yes	Analysis
17	NMBCU Closed 2023 (U16)	2023-08-11	2023-08-12	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
18	NMBCU Trial 4 2023 (U16)	2023-07-28	2023-07-29	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
19	EP Trials 3 2023 (U16)	2023-05-05	2023-05-06	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
20	PECC Presidents Cup 2023	2023-02-02	2023-03-16	Standard	Nelson Mandela Bay (ENM)	7	3	1	Yes	Analysis
21	NMB 2nd Trials 2023 (U16)	2023-03-24	2023-03-25	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
22	NMB 1st Trials 2023 (U16)	2023-02-17	2023-02-18	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
23	PECC Closed 2022 (C)	2022-09-22	2022-10-27	Standard	Nelson Mandela Bay (ENM)	5	5	3.5	Yes	Analysis
24	Eatern Cape Provincial Chess Championship 2022 (U16 Boys)	2022-10-01	2022-10-01	Standard	Sarah Baartman (ESB)	7	6	3	Yes	Analysis
25	PECC Blitz Closed 2022	2022-08-11	2022-08-18	Blitz	Nelson Mandela Bay (ENM)	9	9	4.5	Yes	Analysis
26	2022 Westering Tournament (Rapid)	2022-08-27	2022-08-27	Rapid	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
27	2022 Westering Tournament (Blitz)	2022-08-27	2022-08-27	Blitz	Nelson Mandela Bay (ENM)	7	7	3	Yes	Analysis
28	2022 NMBCU Closed 2022 (U16)	2022-08-19	2022-08-20	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
29	2022 NMBCU Trial 4 (U16)	2022-08-12	2022-08-13	Standard	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis
30	NMBCU Trial 3 2022 (U16)	2022-07-22	2022-07-23	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
31	2022 NMB Rapid & Blitz Championships (Rapid)	2022-07-02	2022-07-02	Rapid	Nelson Mandela Bay (ENM)	5	5	1.5	Yes	Analysis
32	2022 NMB Rapid & Blitz Championships (Blitz)	2022-07-02	2022-07-02	Blitz	Nelson Mandela Bay (ENM)	7	7	2	Yes	Analysis
33	2022 NMB Junior Trials 2 (U14)	2022-05-13	2022-05-14	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
34	2022 NMB Junior Trials 1 (U14)	2022-04-22	2022-04-23	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis

#	Games	Start				End
1	9	Tournament NMBCH Trial 1 2025				Tournament NMB 2nd Trials 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 0.5
		Opponent Wilson, T (Tharell)				Opponent Jaffray, J (Joseph)
2	9	Tournament NMBCU Trials 1 2024				Tournament NMBCU Trials 2 2024
		date 2024-02-16	rnd 1	type Standard	result 1	date 2024-04-13	rnd 4	type Standard	result 0.5
		Opponent Khumalo, S (Sifiso)				Opponent Slabbert, D (Deon)
3	6	Tournament NMB 1st Trials 2023				Tournament NMB 2nd Trials 2023
		date 2023-02-18	rnd 3	type Standard	result 1	date 2023-03-25	rnd 2	type Standard	result 1
		Opponent Bailanis, E (Elijah)				Opponent Peter, N (Noah)

#	Games	Start				End
1	9	Tournament NMBCH Trial 1 2025				Tournament NMB 2nd Trials 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-08	rnd 6	type Standard	result 0.5
		Opponent Wilson, T (Tharell)				Opponent Jaffray, J (Joseph)
2	9	Tournament NMBCU Trials 1 2024				Tournament NMBCU Trials 2 2024
		date 2024-02-16	rnd 1	type Standard	result 1	date 2024-04-13	rnd 4	type Standard	result 0.5
		Opponent Khumalo, S (Sifiso)				Opponent Slabbert, D (Deon)
3	6	Tournament NMB 1st Trials 2023				Tournament NMB 2nd Trials 2023
		date 2023-02-18	rnd 3	type Standard	result 1	date 2023-03-25	rnd 2	type Standard	result 1
		Opponent Bailanis, E (Elijah)				Opponent Peter, N (Noah)

#	Games	Start				End
1	3	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 Westering Tournament
		date 2022-07-02	rnd 4	type Rapid	result 1	date 2022-08-27	rnd 1	type Rapid	result 1
		Opponent Jacobs, D (Dale)				Opponent Prince, J (Jermaine)
2	2	Tournament 2022 Westering Tournament				Tournament 2022 Westering Tournament
		date 2022-08-27	rnd 4	type Rapid	result 1	date 2022-08-27	rnd 5	type Rapid	result 1
		Opponent Nqebe, A (Asive)				Opponent Manton, C (Charlie)

#	Games	Start				End
1	3	Tournament PECC Blitz Closed 2022				Tournament PECC Blitz Closed 2022
		date 2022-08-11	rnd 3	type Blitz	result 1	date 2022-08-11	rnd 5	type Blitz	result 1
		Opponent Jacobs, J (Joel)				Opponent Louis, C (Caitlyn)
2	2	Tournament 2022 Westering Tournament				Tournament 2022 Westering Tournament
		date 2022-08-27	rnd 4	type Blitz	result 1	date 2022-08-27	rnd 5	type Blitz	result 1
		Opponent Bosch, Z (Zarynne)				Opponent Mvumbi, E (Elam)
3	2	Tournament PECC Blitz Closed 2022				Tournament 2022 Westering Tournament
		date 2022-08-18	rnd 9	type Blitz	result 1	date 2022-08-27	rnd 1	type Blitz	result 1
		Opponent Holroyd, K (Kea)				Opponent Williams, O (Owam)

#	Games	Start				End
1	8	Tournament NMBCH Trial 1 2025				Tournament NMB 2nd Trials 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Wilson, T (Tharell)				Opponent Slabbert, D (Deon)
2	6	Tournament NMB 1st Trials 2023				Tournament NMB 2nd Trials 2023
		date 2023-02-18	rnd 3	type Standard	result 1	date 2023-03-25	rnd 2	type Standard	result 1
		Opponent Bailanis, E (Elijah)				Opponent Peter, N (Noah)
3	5	Tournament Eastern Cape Chess Team Championship 2023				Tournament Eastern Cape Chess Team Championship 2023
		date 2023-10-07	rnd 1	type Standard	result 1	date 2023-10-08	rnd 5	type Standard	result 1
		Opponent Mqwebevu, E (Esona)				Opponent Mqweba, E (Elam)

#	Games	Start				End
1	8	Tournament NMBCH Trial 1 2025				Tournament NMB 2nd Trials 2025
		date 2025-02-15	rnd 4	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Wilson, T (Tharell)				Opponent Slabbert, D (Deon)
2	6	Tournament NMB 1st Trials 2023				Tournament NMB 2nd Trials 2023
		date 2023-02-18	rnd 3	type Standard	result 1	date 2023-03-25	rnd 2	type Standard	result 1
		Opponent Bailanis, E (Elijah)				Opponent Peter, N (Noah)
3	5	Tournament Eastern Cape Chess Team Championship 2023				Tournament Eastern Cape Chess Team Championship 2023
		date 2023-10-07	rnd 1	type Standard	result 1	date 2023-10-08	rnd 5	type Standard	result 1
		Opponent Mqwebevu, E (Esona)				Opponent Mqweba, E (Elam)

#	Games	Start				End
1	2	Tournament 2022 Westering Tournament				Tournament 2022 Westering Tournament
		date 2022-08-27	rnd 4	type Rapid	result 1	date 2022-08-27	rnd 5	type Rapid	result 1
		Opponent Nqebe, A (Asive)				Opponent Manton, C (Charlie)
2	1	Tournament 2022 Westering Tournament				Tournament 2022 Westering Tournament
		date 2022-08-27	rnd 1	type Rapid	result 1	date 2022-08-27	rnd 1	type Rapid	result 1
		Opponent Prince, J (Jermaine)				Opponent Prince, J (Jermaine)
3	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 4	type Rapid	result 1	date 2022-07-02	rnd 4	type Rapid	result 1
		Opponent Jacobs, D (Dale)				Opponent Jacobs, D (Dale)

#	Games	Start				End
1	2	Tournament 2022 Westering Tournament				Tournament 2022 Westering Tournament
		date 2022-08-27	rnd 4	type Blitz	result 1	date 2022-08-27	rnd 5	type Blitz	result 1
		Opponent Bosch, Z (Zarynne)				Opponent Mvumbi, E (Elam)
2	2	Tournament PECC Blitz Closed 2022				Tournament 2022 Westering Tournament
		date 2022-08-18	rnd 9	type Blitz	result 1	date 2022-08-27	rnd 1	type Blitz	result 1
		Opponent Holroyd, K (Kea)				Opponent Williams, O (Owam)
3	1	Tournament PECC Blitz Closed 2022				Tournament PECC Blitz Closed 2022
		date 2022-08-18	rnd 7	type Blitz	result 1	date 2022-08-18	rnd 7	type Blitz	result 1
		Opponent Driscoll, J (Jessica Darby)				Opponent Driscoll, J (Jessica Darby)

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Chipunza ,J (James)	8	0.5	-371.9	8	0.5	-371.9	0	0	0	0	0	0
1	Chipunza ,J (James)	8	1415.2	1043.3	8	1409.7	1043.3	0	0	0	0	0	0
2	Bouwer ,R (Ruben)	6	4	141.7	6	4	141.7	0	0	0	0	0	0
2	Bouwer ,R (Ruben)	6	1274.1	1415.7	6	1281	1415.7	0	0	0	0	0	0
3	Mtshekexe ,U (Usemhle)	5	4	255	5	4	255	0	0	0	0	0	0
3	Mtshekexe ,U (Usemhle)	5	1370.8	1625.8	5	1371.6	1625.8	0	0	0	0	0	0
4	Slabbert ,D (Deon)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
4	Slabbert ,D (Deon)	5	1429.1	1429.1	5	1422.3	1429.1	0	0	0	0	0	0
5	Jaffray ,J (Joseph)	5	1.5	-170	5	1.5	-170	0	0	0	0	0	0
5	Jaffray ,J (Joseph)	5	1403.7	1233.7	5	1405.3	1233.7	0	0	0	0	0	0
6	Lagardien ,I (Ismaeel)	5	0.5	-340	3	0.5	-283.3	1	0	-425	1	0	-425
6	Lagardien ,I (Ismaeel)	5	1685.1	1345.1	3	1733.8	1401.8	1	1382.5	1260.1	1	1240.7	1260.1
7	Cerfonteyn ,Z (Zeenat)	4	3.5	318.8	4	3.5	318.8	0	0	0	0	0	0
7	Cerfonteyn ,Z (Zeenat)	4	1176.9	1495.7	4	1181	1495.7	0	0	0	0	0	0
8	Ngamlana ,A (Awonke)	4	4	425	4	4	425	0	0	0	0	0	0
8	Ngamlana ,A (Awonke)	4	1121.2	1546.2	4	1108.3	1546.2	0	0	0	0	0	0
9	Peter ,N (Noah)	4	1.5	-106.2	4	1.5	-106.2	0	0	0	0	0	0
9	Peter ,N (Noah)	4	1622.2	1516	4	1638	1516	0	0	0	0	0	0
10	Brown ,R (Reagan)	4	4	425	4	4	425	0	0	0	0	0	0
10	Brown ,R (Reagan)	4	1146.5	1571.5	4	1141.2	1571.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Grigor, R (Ruan)

Ratings

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Last 24 raw ratings

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Top 10 opponents most often played

Norms