Chess South Africa Ratings Database

PLAYER PAGE

Personal

Du Preez-Gratz, C (Claire)

Chess SA id

207072977

FIDE id

Date of birth

2007-07-30 (U20)

Gender

Female

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-05-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1173.5	1159.8	661.6	586.9
Raw rating	1173.5	1159.8	661.6	586.9
Weighted rating	1173.5	1159.8	661.6	586.6
Weighted performance	231.4	228.7	0	0
Floor	673.5	659.8	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	172.2	175.6	357.1	397.2
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-03-01	1200 2018-02-01
Highest raw rating	1173.5 2024-03-01	1159.8 2024-03-01	661.6 2024-03-01	661.6 2018-02-01
Highest weighted rating	1173.5 2024-11-01	1159.8 2024-11-01	661.6 2024-11-01	661.6 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-03-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1173.5	1159.8	661.6	586.9
Analysis
Rating	1173.5	1159.8	661.6	586.9
Raw rating	1173.5	1159.8	661.6	586.9
Weighted rating	1173.5	1159.8	661.6
Weighted performance	231.4	228.7	0
K-factor	40	40	40	40
Floor	673.5	659.8	500	500
Max/Min rating change allowed	172.2	175.6	357.1	397.2
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	1173.5	1159.8	661.6	586.9
New weighted rating	1173.5	1159.8	661.6	586.8
New weighted performance	230.2	227.5	0	0
Temp new rating	1173.5	1159.8	661.6	586.9
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1173.5	1159.8	661.6	586.9
New K-factor	40	40	40	40
New floor	673.5	659.8	500	500

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	170	147	15	8

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U20
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	88	44.5	50.57	4.8	997.8	1002.6
Standard	80	43.5	54.37	37.2	992.2	1029.4
Rapid	0	0	0	0	0	0
Blitz	8	1	12.5	-318.8	1053.5	734.8

Date	Main	Standard	Rapid	Blitz
2025-09-30	1173.5	1159.8	661.6	586.9
2025-09-01	1173.5	1159.8	661.6	586.9
2025-08-01	1173.5	1159.8	661.6	586.9
2025-07-01	1173.5	1159.8	661.6	586.9
2025-06-01	1173.5	1159.8	661.6	586.9
2025-05-01	1173.5	1159.8	661.6	586.9
2025-04-01	1173.5	1159.8	661.6	586.9
2025-03-01	1173.5	1159.8	661.6	586.9
2025-02-01	1173.5	1159.8	661.6	586.9
2025-01-01	1173.5	1159.8	661.6	586.9
2024-12-01	1173.5	1159.8	661.6	586.9
2024-11-01	1173.5	1159.8	661.6	586.9
2024-10-01	1173.5	1159.8	661.6	586.9
2024-09-01	1173.5	1159.8	661.6	586.9
2024-08-01	1173.5	1159.8	661.6	586.9
2024-07-01	1173.5	1159.8	661.6	586.9
2024-06-01	1173.5	1159.8	661.6	586.9
2024-08-01	1173.5	1159.8	661.6	586.9
2024-04-01	1173.5	1159.8	661.6	586.9
2024-03-01	1173.5	1159.8	661.6	586.9
2024-02-01	1173.5	1159.8	661.6	586.9
2024-01-01	1173.5	1159.8	661.6	586.9
2023-12-01	1173.5	1159.8	661.6	554
2023-11-01	1173.5	1159.8	661.6	554

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Eden Trials 3 2019 (U14 Open)	2019-05-11	2019-05-11	Standard	Eden (WEG)	5	4	2	Yes	Analysis
2	Western Cape Schools Individuals 2019 (U13 Girls)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	3.5	Yes	Analysis
3	Eden Trials 2 2019 (U14 Open)	2019-04-13	2019-04-13	Standard	Eden (WEG)	5	5	3	Yes	Analysis
4	Eden Trials 1 2019 (U14 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	5	3	Yes	Analysis
5	Triangular 1 GEO-MOSS-PAC 2019	2019-02-20	2019-02-20	Blitz	Eden (WEG)	8	8	1	Yes	Analysis
6	George Trials 3 2019 (U14)	2019-02-23	2019-02-23	Standard	Eden (WEG)	5	5	3	Yes	Analysis
7	George Trials 2 2019 (U14)	2019-02-09	2019-02-09	Standard	Eden (WEG)	5	5	3	Yes	Analysis
8	George Trials 1 2019 (U14)	2019-01-26	2019-01-26	Standard	Eden (WEG)	5	5	3	Yes	Analysis
9	South African Junior Team Championships 2018 (U12A Girls)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	0	Yes	Analysis
10	EDENSC Closed 3 2018 (U12 Open)	2018-05-12	2018-05-12	Standard	Eden (WEG)	5	5	3	Yes	Analysis
11	Western Cape Schools Individuals 2018 (U11 Girls)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	4	Yes	Analysis
12	EDENSC Closed 2 2018 (U12 Open)	2018-04-14	2018-04-14	Standard	Eden (WEG)	5	5	3	Yes	Analysis
13	EDENSC Closed 1 2018 (U12 Boys)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	3	Yes	Analysis
14	George Trails 3 2018 (U12)	2018-02-24	2018-02-24	Standard	Eden (WEG)	5	5	3	Yes	Analysis
15	George Trails 1 2018 (U12)	2018-01-27	2018-01-27	Standard	Eden (WEG)	5	5	4	Yes	Analysis
16	South African Junior Team Championships 2017 (U12 Girls)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	3	Yes	Analysis

#	Games	Start				End
1	5	Tournament George Trails 1 2018				Tournament George Trails 3 2018
		date 2018-01-27	rnd 2	type Standard	result 1	date 2018-02-24	rnd 1	type Standard	result 1
		Opponent Brits, B (Brandon)				Opponent Van Der Berg, R (Renier)
2	4	Tournament Eden Trials 3 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-05-18	rnd 3	type Standard	result 0.5
		Opponent Le Roux, J (Jonicquin)				Opponent De Vries, L (Logan)
3	3	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 4	type Standard	result 1	date 2018-05-20	rnd 6	type Standard	result 1
		Opponent Olkers, K (Kirsty)				Opponent Padayachy, S (Shreya)

#	Games	Start				End
1	5	Tournament George Trails 1 2018				Tournament George Trails 3 2018
		date 2018-01-27	rnd 2	type Standard	result 1	date 2018-02-24	rnd 1	type Standard	result 1
		Opponent Brits, B (Brandon)				Opponent Van Der Berg, R (Renier)
2	4	Tournament Eden Trials 3 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-05-18	rnd 3	type Standard	result 0.5
		Opponent Le Roux, J (Jonicquin)				Opponent De Vries, L (Logan)
3	3	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 4	type Standard	result 1	date 2018-05-20	rnd 6	type Standard	result 1
		Opponent Olkers, K (Kirsty)				Opponent Padayachy, S (Shreya)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Triangular 1 GEO-MOSS-PAC 2019				Tournament Triangular 1 GEO-MOSS-PAC 2019
		date 2019-02-20	rnd 6	type Blitz	result 1	date 2019-02-20	rnd 6	type Blitz	result 1
		Opponent Kruger, S (Sachin)				Opponent Kruger, S (Sachin)

#	Games	Start				End
1	5	Tournament George Trails 1 2018				Tournament George Trails 3 2018
		date 2018-01-27	rnd 2	type Standard	result 1	date 2018-02-24	rnd 1	type Standard	result 1
		Opponent Brits, B (Brandon)				Opponent Van Der Berg, R (Renier)
2	3	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 4	type Standard	result 1	date 2018-05-20	rnd 6	type Standard	result 1
		Opponent Olkers, K (Kirsty)				Opponent Padayachy, S (Shreya)
3	3	Tournament EDENSC Closed 2 2018				Tournament EDENSC Closed 3 2018
		date 2018-04-14	rnd 5	type Standard	result 1	date 2018-05-12	rnd 2	type Standard	result 1
		Opponent Prins, G (Gior-Danny)				Opponent Du Plessis, A (Arno)

#	Games	Start				End
1	5	Tournament George Trails 1 2018				Tournament George Trails 3 2018
		date 2018-01-27	rnd 2	type Standard	result 1	date 2018-02-24	rnd 1	type Standard	result 1
		Opponent Brits, B (Brandon)				Opponent Van Der Berg, R (Renier)
2	3	Tournament Western Cape Schools Individuals 2018				Tournament Western Cape Schools Individuals 2018
		date 2018-05-19	rnd 4	type Standard	result 1	date 2018-05-20	rnd 6	type Standard	result 1
		Opponent Olkers, K (Kirsty)				Opponent Padayachy, S (Shreya)
3	3	Tournament EDENSC Closed 2 2018				Tournament EDENSC Closed 3 2018
		date 2018-04-14	rnd 5	type Standard	result 1	date 2018-05-12	rnd 2	type Standard	result 1
		Opponent Prins, G (Gior-Danny)				Opponent Du Plessis, A (Arno)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Triangular 1 GEO-MOSS-PAC 2019				Tournament Triangular 1 GEO-MOSS-PAC 2019
		date 2019-02-20	rnd 6	type Blitz	result 1	date 2019-02-20	rnd 6	type Blitz	result 1
		Opponent Kruger, S (Sachin)				Opponent Kruger, S (Sachin)

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	Botha ,D (Daniel)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
1	Botha ,D (Daniel)	4	556.2	768.8	4	567.8	768.8	0	0	0	0	0	0
2	Jordaan ,T (Thor)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Jordaan ,T (Thor)	3	1267	842	3	1270.2	842	0	0	0	0	0	0
3	Kruger ,S (Sachin)	3	1	-141.7	1	0	-425	0	0	0	2	1	0
3	Kruger ,S (Sachin)	3	1274.2	1132.5	1	1234.6	849.2	0	0	0	2	500	1274.2
4	Michaels ,E (Enrico)	2	1	0	2	1	0	0	0	0	0	0	0
4	Michaels ,E (Enrico)	2	820	820	2	821.3	820	0	0	0	0	0	0
5	Goosen ,M (Mignon)	2	1	0	2	1	0	0	0	0	0	0	0
5	Goosen ,M (Mignon)	2	1045.7	1045.7	2	1046.9	1045.7	0	0	0	0	0	0
6	Geduld ,L (Lucian)	2	1	0	2	1	0	0	0	0	0	0	0
6	Geduld ,L (Lucian)	2	725.8	725.8	2	755.7	725.8	0	0	0	0	0	0
7	Sambo ,J (Jendrio)	2	2	425	2	2	425	0	0	0	0	0	0
7	Sambo ,J (Jendrio)	2	1123.7	1548.7	2	1111.6	1548.7	0	0	0	0	0	0
8	Baadjies ,B (Bradley)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Baadjies ,B (Bradley)	2	1138.6	713.6	2	1073.3	713.6	0	0	0	0	0	0
9	Kuyler ,L (Luzandri)	2	1	0	2	1	0	0	0	0	0	0	0
9	Kuyler ,L (Luzandri)	2	1022	1022	2	1022.8	1022	0	0	0	0	0	0
10	Gelderbloem ,C (Craigan)	2	0	-425	0	0	0	0	0	0	2	0	-425
10	Gelderbloem ,C (Craigan)	2	663.6	238.6	0	0	0	0	0	0	2	555.2	238.6

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Du Preez-Gratz, C (Claire)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms