Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jaap, I (Isabella)

Chess SA id

206072029

FIDE id

Date of birth

2006-07-26 (U20)

Gender

Female

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-04-06

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1309	1256.5	1217.9	951
Raw rating	1309	1256.5	1217.9	951
Weighted rating	1308.4	1256.5	1216.7	951
Weighted performance	743.6	439.8	645.6	0
Floor	837.9	783.9	717.9	500
K-factor	36	36	36	40
Min/Max rating change allowed	142	153	161.6	236.4
Highest rating	1337.9 2022-06-01	1283.9 2022-06-01	1229.7 2018-07-01	1200 2024-03-01
Highest raw rating	1337.9 2022-06-01	1283.9 2022-06-01	1217.9 2024-05-01	951 2024-03-01
Highest weighted rating	1337.9 2023-02-01	1283.9 2023-02-01	1215.9 2025-08-01	951 2024-11-01
Highest weighted performance	1312.2 2019-05-01	1281.9 2019-09-01	1229.7 2018-07-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1309	1256.5	1217.9	951
Analysis
Rating	1309	1256.5	1217.9	951
Raw rating	1309	1256.5	1217.9	951
Weighted rating	1308.4	1256.5	1216.7
Weighted performance	743.6	439.8	645.6
K-factor	36	36	36	40
Floor	837.9	783.9	717.9	500
Max/Min rating change allowed	142	153	161.6	236.4
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	1309	1256.5	1217.9	951
New weighted rating	1308.4	1256.5	1217.1	951
New weighted performance	742.3	438.4	644.2	0
Temp new rating	1309	1256.5	1217.9	951
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1309	1256.5	1217.9	951
New K-factor	36	36	36	40
New floor	837.9	783.9	717.9	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	0	5
	1	1	0
	12	6	6
	0	0	0
History	179	122	57

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Female
Age group	U20
Region	Cape Winelands (WCW)
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	81	57	70.37	173.1	1045.7	1218.8
Standard	42	30.5	72.62	192.3	1056.3	1248.6
Rapid	39	26.5	67.95	152.6	1034.2	1186.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1309	1256.5	1217.9	951
2025-09-01	1309	1256.5	1217.9	951
2025-08-01	1309	1256.5	1217.9	951
2025-07-01	1309	1256.5	1217.9	951
2025-06-01	1309	1256.5	1217.9	951
2025-05-01	1309	1256.5	1217.9	951
2025-04-01	1309	1256.5	1217.9	951
2025-03-01	1309	1256.5	1217.9	951
2025-02-01	1308.9	1256.5	1217.9	951
2025-01-01	1306.2	1256.5	1217.9	951
2024-12-01	1306.2	1256.5	1217.9	951
2024-11-01	1306.2	1256.5	1217.9	951
2024-10-01	1306.2	1256.5	1217.9	951
2024-09-01	1306.2	1256.5	1217.9	951
2024-08-01	1306.2	1256.5	1217.9	951
2024-07-01	1306.2	1256.5	1217.9	951
2024-06-01	1306.2	1256.5	1217.9	951
2024-08-01	1306.2	1256.5	1217.9	951
2024-04-01	1314	1256.5	1201	951
2024-03-01	1314	1256.5	1201	951
2024-02-01	1314	1256.5	1201	951
2024-01-01	1314	1256.5	1201	951
2023-12-01	1314	1256.5	1201	951
2023-11-01	1314	1256.5	1201	951

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	Hoerskool Strand Skaak Graderingstoernooi 2024 (U15+U18 Mixed)	2024-04-06	2024-04-06	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
2	District East Schools Chess Individual Trials 2023 (U17+U19 Girls)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	1	0	Yes	Analysis
3	Western Cape Schools Chess 2022 (U18 Girls)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	4	Yes	Analysis
4	2022 East Dist Individuals (U18)	2022-03-13	2022-03-13	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
5	Western Cape Top Schools 2019 (U13 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
6	Cape Winelands Schools - Top Schools 2019 (U13 Mix)	2019-07-27	2019-07-27	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
7	Western Cape Schools Individuals 2019 (U13 Girls)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	5	Yes	Analysis
8	Cape Winelands Schools Closed 2019 (U13 Girls)	2019-03-16	2019-03-17	Standard	Cape Winelands (WCW)	7	7	6	Yes	Analysis
9	CW Schools Open 2019 (U13 Girls)	2019-02-02	2019-02-02	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
10	Western Cape Top Schools 2018 (U13 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
11	Cape Winelands Schools Chess - Top Schools 2018 (U13 Mix)	2018-07-28	2018-07-28	Rapid	Cape Winelands (WCW)	5	4	4	Yes	Analysis
12	Inter Regional 2018 (U14 Individual)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
13	Cape Winelands Schools Trials 1 2018 (U13 Girls)	2018-03-03	2018-03-03	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
14	Cape Winelands Schools Prestige 2018 (U13 Girls)	2018-03-24	2018-03-25	Standard	Cape Winelands (WCW)	7	7	4	Yes	Analysis
15	Mandela Drakenstein Mgt Area Rapid Chess 2018 (Primary School)	2018-02-03	2018-02-03	Rapid	Cape Winelands (WCW)	7	7	5	Yes	Analysis

#	Games	Start				End
1	14	Tournament Inter Regional 2018				Tournament CW Schools Open 2019
		date 2018-05-05	rnd 4	type Standard	result 1	date 2019-02-02	rnd 3	type Rapid	result 1
		Opponent Mogaecho, GK (Gomolemo)				Opponent Theron, A (Anja)
2	13	Tournament Cape Winelands Schools Closed 2019				Tournament Cape Winelands Schools - Top Schools 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-07-27	rnd 3	type Rapid	result 1
		Opponent Steenkamp, J (Janelle)				Opponent Bredenkamp, E (Elzaan)
3	5	Tournament 2022 East Dist Individuals				Tournament Western Cape Schools Chess 2022
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2022-05-07	rnd 2	type Standard	result 1
		Opponent Du Toit, A (Aidan)				Opponent Brand, R (Robin)

#	Games	Start				End
1	12	Tournament Cape Winelands Schools Closed 2019				Tournament Western Cape Top Schools 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-08-31	rnd 2	type Standard	result 1
		Opponent Steenkamp, J (Janelle)				Opponent Mcquire, C (Craig)
2	9	Tournament Inter Regional 2018				Tournament Cape Winelands Schools Closed 2019
		date 2018-05-05	rnd 4	type Standard	result 1	date 2019-03-16	rnd 2	type Standard	result 1
		Opponent Mogaecho, GK (Gomolemo)				Opponent Kula, A (Akhona)
3	2	Tournament Western Cape Schools Chess 2022				Tournament Western Cape Schools Chess 2022
		date 2022-05-08	rnd 5	type Standard	result 1	date 2022-05-08	rnd 6	type Standard	result 1
		Opponent Archbold, N (Neave)				Opponent Van Den Bergh, M (Marilene)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools Chess - Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-07-28	rnd 2	type Rapid	result 1	date 2019-02-02	rnd 3	type Rapid	result 1
		Opponent April, W (Waleed)				Opponent Theron, A (Anja)
2	4	Tournament 2022 East Dist Individuals				Tournament Hoerskool Strand Skaak Graderingstoernooi 2024
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2024-04-06	rnd 1	type Rapid	result 1
		Opponent Du Toit, A (Aidan)				Opponent Cornelius, C (Caitlin)
3	4	Tournament Mandela Drakenstein Mgt Area Rapid Chess 2018				Tournament Mandela Drakenstein Mgt Area Rapid Chess 2018
		date 2018-02-03	rnd 1	type Rapid	result 1	date 2018-02-03	rnd 4	type Rapid	result 1
		Opponent Kruger, A (Aiden)				Opponent Fukufukwana, O (Onwabile)

No games found.

#	Games	Start				End

#	Games	Start				End
1	12	Tournament Cape Winelands Schools Chess - Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-07-28	rnd 2	type Rapid	result 1	date 2019-02-02	rnd 3	type Rapid	result 1
		Opponent April, W (Waleed)				Opponent Theron, A (Anja)
2	7	Tournament Cape Winelands Schools Closed 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-05-18	rnd 3	type Standard	result 1
		Opponent Steenkamp, J (Janelle)				Opponent Pali, S (Sisipho)
3	5	Tournament 2022 East Dist Individuals				Tournament Western Cape Schools Chess 2022
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2022-05-07	rnd 2	type Standard	result 1
		Opponent Du Toit, A (Aidan)				Opponent Brand, R (Robin)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools Closed 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-03-16	rnd 4	type Standard	result 1	date 2019-05-18	rnd 3	type Standard	result 1
		Opponent Steenkamp, J (Janelle)				Opponent Pali, S (Sisipho)
2	7	Tournament Western Cape Top Schools 2018				Tournament Cape Winelands Schools Closed 2019
		date 2018-08-25	rnd 1	type Standard	result 1	date 2019-03-16	rnd 2	type Standard	result 1
		Opponent Ebrahim, MB (Mumtaaz)				Opponent Kula, A (Akhona)
3	3	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Top Schools 2019
		date 2019-05-19	rnd 6	type Standard	result 1	date 2019-08-31	rnd 2	type Standard	result 1
		Opponent Fradie, F (Faith)				Opponent Mcquire, C (Craig)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools Chess - Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-07-28	rnd 2	type Rapid	result 1	date 2019-02-02	rnd 3	type Rapid	result 1
		Opponent April, W (Waleed)				Opponent Theron, A (Anja)
2	4	Tournament 2022 East Dist Individuals				Tournament Hoerskool Strand Skaak Graderingstoernooi 2024
		date 2022-03-13	rnd 4	type Rapid	result 1	date 2024-04-06	rnd 1	type Rapid	result 1
		Opponent Du Toit, A (Aidan)				Opponent Cornelius, C (Caitlin)
3	4	Tournament Mandela Drakenstein Mgt Area Rapid Chess 2018				Tournament Mandela Drakenstein Mgt Area Rapid Chess 2018
		date 2018-02-03	rnd 1	type Rapid	result 1	date 2018-02-03	rnd 4	type Rapid	result 1
		Opponent Kruger, A (Aiden)				Opponent Fukufukwana, O (Onwabile)

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	Theron ,A (Anja)	3	2	141.7	2	1	0	1	1	425	0	0	0
1	Theron ,A (Anja)	3	963.7	1105.3	2	863.4	963.7	1	918.2	1388.7	0	0	0
2	Diniso ,S (Solulele)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
2	Diniso ,S (Solulele)	2	1184.6	1397.1	2	1180.6	1397.1	0	0	0	0	0	0
3	Fradie ,F (Faith)	2	2	425	2	2	425	0	0	0	0	0	0
3	Fradie ,F (Faith)	2	1229.2	1654.2	2	1230.7	1654.2	0	0	0	0	0	0
4	Neels ,S (Shannon)	2	0	-425	1	0	-425	1	0	-425	0	0	0
4	Neels ,S (Shannon)	2	1180.2	755.2	1	1150.3	755.2	1	1173.5	755.2	0	0	0
5	Stokes ,J (Jody)	2	1	0	1	1	425	1	0	-425	0	0	0
5	Stokes ,J (Jody)	2	1159.7	1159.7	1	1223.8	1584.7	1	1108.2	734.7	0	0	0
6	Qolongile ,S (Sinoxolo)	2	2	425	1	1	425	1	1	425	0	0	0
6	Qolongile ,S (Sinoxolo)	2	607.7	1032.7	1	500	1032.7	1	681.2	1032.7	0	0	0
7	Phongoma ,L (Lisakhanya)	2	2	425	1	1	425	1	1	425	0	0	0
7	Phongoma ,L (Lisakhanya)	2	1085.9	1510.9	1	1074.8	1510.9	1	1200	1510.9	0	0	0
8	Augustyn ,A (Anika)	2	1	0	1	1	425	1	0	-425	0	0	0
8	Augustyn ,A (Anika)	2	676.7	676.7	1	611.2	1101.7	1	717.6	251.7	0	0	0
9	Ferreira ,M (Mila)	2	0	-425	0	0	0	2	0	-425	0	0	0
9	Ferreira ,M (Mila)	2	900.4	475.4	0	0	0	2	810.4	475.4	0	0	0
10	Demas ,G (Genevieve)	2	1	0	0	0	0	2	1	0	0	0	0
10	Demas ,G (Genevieve)	2	570.7	570.7	0	0	0	2	611.4	570.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Jaap, I (Isabella)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms