Chess South Africa Ratings Database

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Personal

Pretorius, K (Klarissa)

Chess SA id

2070100307

FIDE id

14360047

Date of birth

2007-09-26 (U20)

Gender

Female

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1513.7	1513.6	1243.9	1200
Raw rating	1513.7	1513.6	1243.9	1200
Weighted rating	1426.3	1418.2	1240.8	1200
Weighted performance	1412.9	1404.2	0	0
Floor	1056.3	1049.6	743.9	700
K-factor	32	32	36	36
Min/Max rating change allowed	106.1	106.1	155.8	165.8
Highest rating	1556.3 2023-08-01	1566.2 2023-07-01	1289.2 2024-06-01	1200 2018-10-01
Highest raw rating	1556.3 2023-08-01	1549.6 2023-08-01	1243.9 2024-08-01	1200 2024-03-01
Highest weighted rating	1556.3 2024-10-01	1549.6 2024-10-01	1234.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1412.9 2026-01-01	1566.2 2023-07-01	1289.2 2024-06-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1513.7	1513.6	1243.9	1200
Analysis
Rating	1513.7	1513.6	1243.9	1200
Raw rating	1513.7	1513.6	1243.9	1200
Weighted rating	1426.3	1418.2	1240.8
Weighted performance	1412.9	1404.2	0
K-factor	32	32	36	36
Floor	1056.3	1049.6	743.9	700
Max/Min rating change allowed	106.1	106.1	155.8	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	1513.7	1513.6	1243.9	1200
New weighted rating	1434	1426.6	1241.7	1200
New weighted performance	1403.4	1394.8	0	0
Temp new rating	1513.7	1513.6	1243.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1513.7	1513.6	1243.9	1200
New K-factor	32	32	36	36
New floor	1056.3	1049.6	743.9	700

Item	Main	Standard	Rapid
	0	0	0
	23	23	0
	47	40	7
	51	45	6
	50	50	0
	11	11	0
History	221	208	13

Games since
	Main 70	Standard 63		Rapid 7		Blitz 0
Gender	Female
Age group	U20
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1727		591		201
Female	254		100		28
U20	145		47		5
U20 Female	26		12		3
Standard
	RSA		Province		Region
Overall	1658		613		196
Female	265		107		29
U20	145		50		5
U20 Female	30		13		3
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	23	12	52.17	18.5	1349.7	1368.2
Standard	23	12	52.17	18.5	1349.7	1368.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	221	111	50.23	1.9	1273.2	1275.1
Standard	208	104	50	0	1269.2	1269.2
Rapid	13	7	53.85	32.7	1336.8	1369.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1513.7	1513.6	1243.9	1200
2025-11-30	1446	1442.9	1243.9	1200
2025-11-01	1446	1442.9	1243.9	1200
2025-09-30	1446	1442.9	1243.9	1200
2025-09-01	1446	1442.9	1243.9	1200
2025-08-01	1446	1442.9	1243.9	1200
2025-07-01	1406.7	1394.4	1243.9	1200
2025-06-01	1403.3	1390.2	1243.9	1200
2025-05-01	1408.9	1397.5	1243.9	1200
2025-04-01	1436.9	1434.6	1243.9	1200
2025-03-01	1436.9	1434.6	1243.9	1200
2025-02-01	1401.5	1388.2	1243.9	1200
2025-01-01	1346.1	1332.7	1243.9	1200
2024-12-01	1384.8	1371.4	1243.9	1200
2024-11-01	1384.8	1371.4	1243.9	1200
2024-10-01	1384.8	1371.4	1243.9	1200
2024-09-01	1381.3	1358.6	1243.9	1200
2024-11-01	1404.2	1380	1243.9	1200
2024-07-01	1398.1	1380	1200	1200
2024-06-01	1398.1	1380	1200	1200
2024-05-01	1398.1	1380	1200	1200
2024-04-01	1398.1	1380	1200	1200
2024-03-01	1460.8	1458.1	1200	1200
2024-02-01	1460.8	1458.1	1200	1200

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	2025 African Youth Chess Championship	2025-12-07	2025-12-13	Standard	Zimbabwe (ZIM)	9	9	4.5	Yes	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U20 Girls)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
3	MCA Winter Chill Classic 2025 (Intermediate)	2025-07-19	2025-07-19	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
4	CPH May 2025 (B)	2025-05-03	2025-05-03	Standard	Johannesburg Metro (GJM)	5	4	0.5	Yes	Analysis
5	South African Junior Closed Chess Championships 2025 (U18 Girls)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	3.5	Yes	Analysis
6	JMC Kick Off 2025 (C)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
7	Mzansi Interprovincial Youth Chess Championships 2024 (U18 Girls Combined)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	3.5	Yes	Analysis
8	Knight Riders Spring Chess Tournament 2024 (A)	2024-09-28	2024-09-28	Standard	Johannesburg Metro (GJM)	5	5	0.5	Yes	Analysis
9	Gauteng Schools Individuals Finals 2024 (U18 Girls)	2024-08-17	2024-08-17	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
10	JMC Closed 2024 (C)	2024-08-09	2024-08-11	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
11	JMC NG Weltevreden Church 2024	2024-06-29	2024-06-29	Rapid	Johannesburg Metro (GJM)	7	7	4	Yes	Analysis
12	1st Knights Open Tournament 2024 (B)	2024-03-23	2024-03-23	Standard	Johannesburg Metro (GJM)	5	4	0	Yes	Analysis
13	JMC Unika School Tournament 2024 (C)	2024-03-02	2024-03-02	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
14	2024 Gauteng Inter-Region Chess Championship (U18A)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
15	JMC Kick Off Tournament 2024 (C)	2024-01-28	2024-01-28	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
16	2023 Gauteng Top Schools (U17 Mixed)	2023-08-19	2023-08-19	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
17	JMC Closed Aug 2023 (U18+U20)	2023-08-04	2023-08-06	Standard	Johannesburg Metro (GJM)	6	5	0	Yes	Analysis
18	ThinkChess Tournament 29 July 2023	2023-07-29	2023-07-29	Standard	Johannesburg Metro (GJM)	5	5	4.5	Yes	Analysis
19	ThinkChess 6 July 2023	2023-07-06	2023-07-06	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
20	JMC Trinity Little Falls 2023 (C)	2023-07-02	2023-07-02	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
21	JMC - The Higher Ground Restaurant 2nd Blitz Event 2023	2023-07-30	2023-07-30	Blitz	Johannesburg Metro (GJM)	7	0	0	No	Analysis
22	ThinkChess Tournament 6 May 2023	2023-05-06	2023-05-06	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
23	Gauteng Schools Individual Finals 2023 (U18 Girls)	2023-05-27	2023-05-27	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
24	JMC 1 St Peters 2023 (C)	2023-03-18	2023-03-18	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
25	Mzansi Rapid 2023 (Intermediate)	2023-02-04	2023-02-04	Rapid	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
26	Thinkchess Tournament 2023 (Group 1)	2023-01-28	2023-01-28	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
27	2022 South African Junior Team Chess Championships (U16 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
28	Mzansi Spring Open 2022 (Young Masters)	2022-09-03	2022-09-03	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
29	JMC 3rd Trials 2022 (C)	2022-09-11	2022-09-11	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
30	JMC Womens Day 2022 (C)	2022-08-06	2022-08-07	Standard	Johannesburg Metro (GJM)	6	6	2	Yes	Analysis
31	South African Open 2022 (U16)	2022-07-11	2022-07-13	Standard	Cape Town (WCT)	6	6	1.5	Yes	Analysis
32	JNW Helpmekaar 2022 (Rookies)	2022-07-09	2022-07-09	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
33	JMC Trials 1 - Laerskool Fontainebleau 2022 (U16+U18)	2022-07-24	2022-07-24	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
34	Mzansi Open 2022 (Young Masters)	2022-04-30	2022-05-01	Standard	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
35	2022 Gauteng Interregion (U16 Open)	2022-02-26	2022-02-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
36	Pinnacle College Waterfall Open (Pinnacle)	2021-10-02	2021-10-03	Standard	Johannesburg Metro (GJM)	6	6	2	Yes	Analysis
37	JMC Everest 2021 (C)	2021-10-30	2021-10-30	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
38	Chessnuts 1 - 29 February 2020 (Knights)	2020-02-29	2020-02-29	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
39	Chessnuts Under 1350 Tournament 2019 (Pawns+Knights)	2019-08-24	2019-08-24	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
40	Chessnuts Under 1200 6 April 2019 (Knights)	2019-04-06	2019-04-06	Standard	Johannesburg Metro (GJM)	5	4	2	Yes	Analysis
41	Chessnuts Spring 2018 (Knights)	2018-09-29	2018-09-29	Standard	Johannesburg Metro (GJM)	5	5	1	Yes	Analysis
42	JNW Club - Maragon Open 2018 (D)	2018-08-04	2018-08-04	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
43	Chessnuts - Under 1000 Ratings Tournament 2018 (B)	2018-07-21	2018-07-21	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
44	British International Prep/Chessnuts 2018 (U12)	2018-06-23	2018-06-23	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
45	Fonties Challenge 2018 (U11)	2018-04-21	2018-04-21	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis

#	Games	Start				End
1	7	Tournament ThinkChess 6 July 2023				Tournament ThinkChess Tournament 29 July 2023
		date 2023-07-06	rnd 4	type Standard	result 1	date 2023-07-29	rnd 5	type Standard	result 1
		Opponent Coulson, A (Alannah)				Opponent Hu-Grobbelaar, L (Lalu)
2	6	Tournament British International Prep/Chessnuts 2018				Tournament Chessnuts - Under 1000 Ratings Tournament 2018
		date 2018-06-23	rnd 4	type Standard	result 1	date 2018-07-21	rnd 4	type Standard	result 1
		Opponent Nyimo, C (Chi-Chi)				Opponent Naidoo, Y (Yasthi)
3	5	Tournament Gauteng Schools Individual Finals 2023				Tournament JMC Trinity Little Falls 2023
		date 2023-05-27	rnd 4	type Standard	result 1	date 2023-07-02	rnd 3	type Standard	result 1
		Opponent Mangwandi, C (Caitlin)				Opponent Barradas, K (Keanu)

#	Games	Start				End
1	7	Tournament ThinkChess 6 July 2023				Tournament ThinkChess Tournament 29 July 2023
		date 2023-07-06	rnd 4	type Standard	result 1	date 2023-07-29	rnd 5	type Standard	result 1
		Opponent Coulson, A (Alannah)				Opponent Hu-Grobbelaar, L (Lalu)
2	6	Tournament British International Prep/Chessnuts 2018				Tournament Chessnuts - Under 1000 Ratings Tournament 2018
		date 2018-06-23	rnd 4	type Standard	result 1	date 2018-07-21	rnd 4	type Standard	result 1
		Opponent Nyimo, C (Chi-Chi)				Opponent Naidoo, Y (Yasthi)
3	5	Tournament Gauteng Schools Individual Finals 2023				Tournament JMC Trinity Little Falls 2023
		date 2023-05-27	rnd 4	type Standard	result 1	date 2023-07-02	rnd 3	type Standard	result 1
		Opponent Mangwandi, C (Caitlin)				Opponent Barradas, K (Keanu)

#	Games	Start				End
1	2	Tournament JMC NG Weltevreden Church 2024				Tournament JMC NG Weltevreden Church 2024
		date 2024-06-29	rnd 6	type Rapid	result 1	date 2024-06-29	rnd 7	type Rapid	result 1
		Opponent Smith, W (William)				Opponent Du Preez, K (Kian)
2	2	Tournament Mzansi Rapid 2023				Tournament Mzansi Rapid 2023
		date 2023-02-04	rnd 5	type Rapid	result 1	date 2023-02-04	rnd 6	type Rapid	result 1
		Opponent Fungurani, K (Kyle)				Opponent Govender, C (Cadin)
3	1	Tournament JMC NG Weltevreden Church 2024				Tournament JMC NG Weltevreden Church 2024
		date 2024-06-29	rnd 4	type Rapid	result 1	date 2024-06-29	rnd 4	type Rapid	result 1
		Opponent Sukraj, T (Tasvir)				Opponent Sukraj, T (Tasvir)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament British International Prep/Chessnuts 2018				Tournament Chessnuts - Under 1000 Ratings Tournament 2018
		date 2018-06-23	rnd 4	type Standard	result 1	date 2018-07-21	rnd 4	type Standard	result 1
		Opponent Nyimo, C (Chi-Chi)				Opponent Naidoo, Y (Yasthi)
2	5	Tournament ThinkChess 6 July 2023				Tournament ThinkChess Tournament 29 July 2023
		date 2023-07-06	rnd 4	type Standard	result 1	date 2023-07-29	rnd 3	type Standard	result 1
		Opponent Coulson, A (Alannah)				Opponent Habangana, B (Bushe)
3	5	Tournament Gauteng Schools Individual Finals 2023				Tournament JMC Trinity Little Falls 2023
		date 2023-05-27	rnd 4	type Standard	result 1	date 2023-07-02	rnd 3	type Standard	result 1
		Opponent Mangwandi, C (Caitlin)				Opponent Barradas, K (Keanu)

#	Games	Start				End
1	6	Tournament British International Prep/Chessnuts 2018				Tournament Chessnuts - Under 1000 Ratings Tournament 2018
		date 2018-06-23	rnd 4	type Standard	result 1	date 2018-07-21	rnd 4	type Standard	result 1
		Opponent Nyimo, C (Chi-Chi)				Opponent Naidoo, Y (Yasthi)
2	5	Tournament ThinkChess 6 July 2023				Tournament ThinkChess Tournament 29 July 2023
		date 2023-07-06	rnd 4	type Standard	result 1	date 2023-07-29	rnd 3	type Standard	result 1
		Opponent Coulson, A (Alannah)				Opponent Habangana, B (Bushe)
3	5	Tournament Gauteng Schools Individual Finals 2023				Tournament JMC Trinity Little Falls 2023
		date 2023-05-27	rnd 4	type Standard	result 1	date 2023-07-02	rnd 3	type Standard	result 1
		Opponent Mangwandi, C (Caitlin)				Opponent Barradas, K (Keanu)

#	Games	Start				End
1	2	Tournament JMC NG Weltevreden Church 2024				Tournament JMC NG Weltevreden Church 2024
		date 2024-06-29	rnd 6	type Rapid	result 1	date 2024-06-29	rnd 7	type Rapid	result 1
		Opponent Smith, W (William)				Opponent Du Preez, K (Kian)
2	2	Tournament Mzansi Rapid 2023				Tournament Mzansi Rapid 2023
		date 2023-02-04	rnd 5	type Rapid	result 1	date 2023-02-04	rnd 6	type Rapid	result 1
		Opponent Fungurani, K (Kyle)				Opponent Govender, C (Cadin)
3	1	Tournament JMC NG Weltevreden Church 2024				Tournament JMC NG Weltevreden Church 2024
		date 2024-06-29	rnd 4	type Rapid	result 1	date 2024-06-29	rnd 4	type Rapid	result 1
		Opponent Sukraj, T (Tasvir)				Opponent Sukraj, T (Tasvir)

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	Mupalala ,K (Kenzo)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Mupalala ,K (Kenzo)	3	1426.8	1001.8	3	1419.2	1001.8	0	0	0	0	0	0
2	Chinoruma ,K (Kupa)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Chinoruma ,K (Kupa)	3	1290.8	1149.2	3	1277.5	1149.2	0	0	0	0	0	0
3	Gough ,R (Rowan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Gough ,R (Rowan)	3	1099.2	957.5	3	1091.6	957.5	0	0	0	0	0	0
4	Butler ,K (Kayla)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
4	Butler ,K (Kayla)	3	1380.9	1097.6	3	1363.4	1097.6	0	0	0	0	0	0
5	Mesele ,O (Oboitshepo)	3	3	425	3	3	425	0	0	0	0	0	0
5	Mesele ,O (Oboitshepo)	3	1337.5	1762.5	3	1353.6	1762.5	0	0	0	0	0	0
6	Bazhko ,A (Anton)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
6	Bazhko ,A (Anton)	3	1414.3	1556	3	1418.7	1556	0	0	0	0	0	0
7	Steyn ,A (Anneke)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
7	Steyn ,A (Anneke)	3	1224.1	1082.4	3	1209.2	1082.4	0	0	0	0	0	0
8	Benney ,J (Joshua)	2	2	425	2	2	425	0	0	0	0	0	0
8	Benney ,J (Joshua)	2	1212.6	1637.6	2	1214.8	1637.6	0	0	0	0	0	0
9	Buhrmann ,J (Johann)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Buhrmann ,J (Johann)	2	1356.4	931.4	2	1359.1	931.4	0	0	0	0	0	0
10	Dove ,M (Megan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
10	Dove ,M (Megan)	2	1463.1	1250.6	2	1466.6	1250.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Pretorius, K (Klarissa)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms