Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grieb, N (Nathan)

Chess SA id

1160300091

FIDE id

Date of birth

2016-08-16 (U10)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1172.6

Item	Main	Standard	Rapid	Blitz
Rating	1308.7	1325.4	1224.9	1200
Raw rating	1308.7	1325.4	1224.9	1200
Weighted rating	1252.4	1256.1	1213.4	1200
Weighted performance	1307.6	1322.9	1153.3	0
Floor	812.4	825.4	724.9	700
K-factor	36	36	36	36
Min/Max rating change allowed	142	138.7	160	165.8
Highest rating	1334.4 2025-09-30	1338.1 2025-09-30	1271.4 2024-03-01	1200 2024-04-01
Highest raw rating	1312.4 2025-09-30	1325.4 2025-09-30	1224.9 2025-11-01	1200 2024-04-01
Highest weighted rating	1252.4 2025-11-01	1248.6 2025-09-30	1214.8 2024-10-01	1200 2024-04-01
Highest weighted performance	1334.4 2025-09-30	1338.1 2025-09-30	1271.4 2024-03-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1308.7	1325.4	1224.9	1200
Analysis
Rating	1308.7	1325.4	1224.9	1200
Raw rating	1308.7	1325.4	1224.9	1200
Weighted rating	1252.4	1256.1	1213.4
Weighted performance	1307.6	1322.9	1153.3
K-factor	36	36	36	36
Floor	812.4	825.4	724.9	700
Max/Min rating change allowed	142	138.7	160	165.8
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	1308.7	1325.4	1224.9	1200
New weighted rating	1258.2	1263.2	1214.4	1200
New weighted performance	1299.8	1314.8	1146	0
Temp new rating	1308.7	1325.4	1224.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1308.7	1325.4	1224.9	1200
New K-factor	36	36	36	36
New floor	812.4	825.4	724.9	700

Item	Main	Standard	Rapid
	0	0	0
	46	22	24
	21	16	5
	0	0	0
	0	0	0
	0	0	0
History	67	38	29

Games since
	Main 67	Standard 38		Rapid 29		Blitz 0
Gender	Male
Age group	U10
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3190		1044		81
Male	2496		774		54
U10	266		82		15
U10 Male	213		58		12
Standard
	RSA		Province		Region
Overall	2931		836		47
Male	2333		625		32
U10	242		63		7
U10 Male	197		47		6
Rapid
	RSA		Province		Region
Overall	1510		742		101
Male	1179		568		65
U10	147		77		21
U10 Male	111		59		17
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	46	25.5	55.43	46.2	1250.9	1297.1
Standard	22	13.5	61.36	96.6	1272.5	1369.1
Rapid	24	12	50	0	1231.2	1231.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	67	37	55.22	44.4	1243.1	1287.5
Standard	38	22	57.89	67.1	1256.4	1323.5
Rapid	29	15	51.72	14.7	1225.7	1240.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1308.7	1325.4	1224.9	1200
2025-09-30	1312.4	1325.4	1211.9	1200
2025-09-01	1301	1314.3	1211.9	1200
2025-08-01	1247.4	1249.5	1211.9	1200
2025-07-01	1247.4	1249.5	1211.7	1200
2025-06-01	1247.4	1249.5	1211.4	1200
2025-05-01	1243.6	1252.5	1211.2	1200
2025-04-01	1243.6	1252.5	1210.9	1200
2025-03-01	1225.6	1241.1	1210.6	1200
2025-02-01	1242.8	1241.1	1214.8	1200
2025-01-01	1242.8	1241.1	1214.8	1200
2024-12-01	1242.8	1241.1	1214.8	1200
2024-11-01	1242.8	1241.1	1214.8	1200
2024-10-01	1242.8	1241.1	1214.8	1200
2024-09-01	1242.8	1241.1	1214.8	1200
2024-08-01	1242.8	1241.1	1214.8	1200
2024-07-01	1182.1	1161.2	1214.8	1200
2024-09-01	1182.1	1161.2	1214.8	1200
2024-05-01	1219.4	1207.6	1214.8	1200
2024-04-01	1219.4	1207.6	1214.8	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200

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	Curro Hermanus Spring Open 2025 (U9)	2025-10-18	2025-10-18	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U9)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
3	Overberg Top Schools 2025 (U7+U9)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
5	Overberg Schools - PS Closed 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
6	Overberg Schools - PS Trials (Region 1) 2025 (U9 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis
7	Laerskool Welgemoed Rapid 2025 (U10)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
8	Curro Hermanus Summer Open 2025 (U9)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Curro Hermanus Spring Open 2025 (U9)	2025-10-18	2025-10-18	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U9)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
3	Overberg Top Schools 2025 (U7+U9)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
5	Overberg Schools - PS Closed 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
6	Overberg Schools - PS Trials (Region 1) 2025 (U9 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis
7	Laerskool Welgemoed Rapid 2025 (U10)	2025-02-15	2025-02-15	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis
8	Curro Hermanus Summer Open 2025 (U9)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
9	Overberg Schools - Top Schools 2024 (U7+U9 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
10	Western Cape PS Individuals Championship 2024 (U9 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	1.5	Yes	Analysis
11	Overberg Schools - PS Closed 2024 (U9 Boys)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	2.5	Yes	Analysis
12	Overberg Schools - PS Trials Region 3 2024 (U9 Boys)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	9	Tournament Western Cape PS Individuals Championship 2024				Tournament Curro Hermanus Summer Open 2025
		date 2024-05-05	rnd 5	type Standard	result 0.5	date 2025-02-08	rnd 2	type Rapid	result 1
		Opponent Marner, L (Loannes)				Opponent Van Rensburg, A (Aubrielle)
2	7	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-05-18	rnd 6	type Standard	result 0.5	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Edons, M (Mihandro)				Opponent Abrahams, A (Anchalee)
3	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 3	type Standard	result 1	date 2025-09-07	rnd 5	type Standard	result 0.5
		Opponent Overbosch, O (Oliver)				Opponent Lawa, V (Veretariki)

#	Games	Start				End
1	7	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-05-18	rnd 6	type Standard	result 0.5	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Edons, M (Mihandro)				Opponent Abrahams, A (Anchalee)
2	7	Tournament Western Cape PS Individuals Championship 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-05-05	rnd 5	type Standard	result 0.5	date 2024-07-27	rnd 5	type Standard	result 1
		Opponent Marner, L (Loannes)				Opponent Ellis, A (Alexander)
3	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 3	type Standard	result 1	date 2025-09-07	rnd 5	type Standard	result 0.5
		Opponent Overbosch, O (Oliver)				Opponent Lawa, V (Veretariki)

#	Games	Start				End
1	3	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 0.5
		Opponent Sander, M (Malakai)				Opponent Barnard, H (Hendrik)
2	3	Tournament Laerskool Welgemoed Rapid 2025				Tournament Laerskool Welgemoed Rapid 2025
		date 2025-02-15	rnd 3	type Rapid	result 1	date 2025-02-15	rnd 5	type Rapid	result 1
		Opponent Stone, T (Tylor)				Opponent Weyers, F (Friedrich)
3	3	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Curro Hermanus Summer Open 2025
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2025-02-08	rnd 2	type Rapid	result 1
		Opponent Otto, X (Xavier)				Opponent Van Rensburg, A (Aubrielle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Overberg Schools - Top Schools 2024				Tournament Curro Hermanus Summer Open 2025
		date 2024-07-27	rnd 2	type Standard	result 1	date 2025-02-08	rnd 2	type Rapid	result 1
		Opponent Solomons, G (Gia)				Opponent Van Rensburg, A (Aubrielle)
2	5	Tournament Overberg Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-02	rnd 2	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Avenant, J (Jone)				Opponent Abrahams, A (Anchalee)
3	3	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Nyikayaramba, D (Darrel)				Opponent Hayes, M (Micah)

#	Games	Start				End
1	5	Tournament Overberg Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-02	rnd 2	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Avenant, J (Jone)				Opponent Abrahams, A (Anchalee)
2	4	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-07-27	rnd 2	type Standard	result 1	date 2024-07-27	rnd 5	type Standard	result 1
		Opponent Solomons, G (Gia)				Opponent Ellis, A (Alexander)
3	3	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Nyikayaramba, D (Darrel)				Opponent Hayes, M (Micah)

#	Games	Start				End
1	3	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Curro Hermanus Summer Open 2025
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2025-02-08	rnd 2	type Rapid	result 1
		Opponent Otto, X (Xavier)				Opponent Van Rensburg, A (Aubrielle)
2	2	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Sander, M (Malakai)				Opponent Fourie, C (Cj)
3	2	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-03-02	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 2	type Rapid	result 1
		Opponent Grobbelaar, M (Marlo)				Opponent Krynauw, O (Odin)

No games found.

#	Games	Start				End

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	Grobbelaar ,M (Marlo)	4	1	-212.5	2	0	-425	2	1	0	0	0	0
1	Grobbelaar ,M (Marlo)	4	1208.7	996.2	2	1216	783.7	2	1204.1	1208.7	0	0	0
2	Avenant ,J (Jone)	2	2	425	2	2	425	0	0	0	0	0	0
2	Avenant ,J (Jone)	2	1212.9	1637.9	2	1230.1	1637.9	0	0	0	0	0	0
3	Fourie ,D (David)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	Fourie ,D (David)	2	1231.7	1019.2	2	1228.2	1019.2	0	0	0	0	0	0
4	Beyers ,T (Tatum)	2	2	425	2	2	425	0	0	0	0	0	0
4	Beyers ,T (Tatum)	2	1183.9	1608.9	2	1177.7	1608.9	0	0	0	0	0	0
5	Badenhorst ,R (Rouxan)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Badenhorst ,R (Rouxan)	2	1473.4	1048.4	2	1366.7	1048.4	0	0	0	0	0	0
6	Faasen ,C (Charles)	2	0.5	-212.5	1	0.5	0	1	0	-425	0	0	0
6	Faasen ,C (Charles)	2	1230	1017.5	1	1251.8	1230	1	1199.7	805	0	0	0
7	Otto ,X (Xavier)	2	2	425	1	1	425	1	1	425	0	0	0
7	Otto ,X (Xavier)	2	1179.8	1604.8	1	1158.1	1604.8	1	1209.2	1604.8	0	0	0
8	Ellis ,A (Alexander)	2	1	0	1	1	425	1	0	-425	0	0	0
8	Ellis ,A (Alexander)	2	1215.8	1215.8	1	1200	1640.8	1	1280.5	790.8	0	0	0
9	Coetzer ,R (Rossouw)	2	0	-425	0	0	0	2	0	-425	0	0	0
9	Coetzer ,R (Rossouw)	2	1377.1	952.1	0	0	0	2	1330	952.1	0	0	0
10	Fourie ,C (Cj)	2	2	425	0	0	0	2	2	425	0	0	0
10	Fourie ,C (Cj)	2	1187.8	1612.8	0	0	0	2	1217.8	1612.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Grieb, N (Nathan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms