Chess South Africa Ratings Database

PLAYER PAGE

Personal

Groenewaldt, K (Katja)

Chess SA id

2110109646

FIDE id

Date of birth

2011-02-21 (U16)

Gender

Female

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1135.7	1157.6	1146.4	1200
Raw rating	1135.7	1157.6	1146.4	1200
Weighted rating	1135.7	1157.5	1146.4	1200
Weighted performance	692.9	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	181.7	176.2	179	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1135.7	1157.6	1146.4	1200
Analysis
Rating	1135.7	1157.6	1146.4	1200
Raw rating	1135.7	1157.6	1146.4	1200
Weighted rating	1135.7	1157.5	1146.4
Weighted performance	692.9	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	181.7	176.2	179	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	1135.7	1157.6	1146.4	1200
New weighted rating	1135.7	1157.5	1146.4	1200
New weighted performance	692.5	0	0	0
Temp new rating	1135.7	1157.6	1146.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1135.7	1157.6	1146.4	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	5	5	0
	0	0	0
	5	0	5
	7	0	7
	0	0	0
History	49	23	26

Games since
	Main 5	Standard 5		Rapid 0		Blitz 0
Gender	Female
Age group	U16
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 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	5	0	0	-425	1330.5	905.5
Standard	5	0	0	-425	1330.5	905.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	49	19.5	39.8	-86.7	1195.8	1109
Standard	23	8.5	36.96	-110.9	1197.1	1086.2
Rapid	26	11	42.31	-65.4	1194.6	1129.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1135.7	1157.6	1146.4	1200
2025-09-01	1135.7	1157.6	1146.4	1200
2025-08-01	1135.7	1157.6	1146.4	1200
2025-07-01	1135.5	1157.3	1146.4	1200
2025-06-01	1132.5	1153.5	1146.4	1200
2025-05-01	1136.1	1158	1146.4	1200
2025-04-01	1136.1	1158	1146.4	1200
2025-03-01	1136.1	1158	1146.4	1200
2025-02-01	1136.1	1158	1146.4	1200
2025-01-01	1136.1	1158	1146.4	1200
2024-12-01	1136.1	1158	1146.4	1200
2024-11-01	1136.1	1158	1146.4	1200
2024-10-01	1136.1	1158	1146.4	1200
2024-09-01	1136.1	1158	1146.4	1200
2024-08-01	1136.1	1158	1146.4	1200
2024-07-01	1136.1	1158	1146.4	1200
2024-06-01	1136.1	1158	1146.4	1200
2024-08-01	1136.1	1158	1146.4	1200
2024-04-01	1136.1	1158	1146.4	1200
2024-03-01	1136.1	1158	1146.4	1200
2024-02-01	1136.1	1158	1146.4	1200
2024-01-01	1136.1	1158	1146.4	1200
2023-12-01	1136.1	1158	1146.4	1200
2023-11-01	1136.1	1158	1146.4	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	West Coast And Mykonos Open 2025 (Open)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	6	5	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	West Coast And Mykonos Open 2025 (Open)	2025-05-02	2025-05-04	Standard	West Coast (WCU)	6	5	0	Yes	Analysis
2	Lower West Coast Primary Schools Prestige Championships 2023 (U13 Girls)	2023-03-04	2023-03-04	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis
3	Onder-Weskus Top Skole 2022 (O13 Seuns)	2022-06-04	2022-06-04	Rapid	West Coast (WCU)	5	3	0	Yes	Analysis
4	Lower West Coast Schools Prestige 2022 (U11 Girls)	2022-03-19	2022-03-19	Rapid	West Coast (WCU)	5	4	1	Yes	Analysis
5	West Coast Schools Prestige 2020 (U9 Girls)	2020-03-07	2020-03-07	Rapid	West Coast (WCU)	5	4	1	Yes	Analysis
6	Onder Weskus Prestige 2020 (U9 Girls)	2020-02-15	2020-02-22	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
7	Weskus Topskole 2019 (U9)	2019-07-20	2019-07-20	Rapid	West Coast (WCU)	3	3	1	Yes	Analysis
8	Western Cape Schools Individuals 2019 (U9 Girls)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	2	Yes	Analysis
9	Weskus Skole Prestige Skaak Kampioenskappe 2019 (O9 Dogters)	2019-03-02	2019-04-06	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
10	St Helenabaai Open 2019 (U8)	2019-02-09	2019-02-09	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
11	Onder-Weskus Skole Proewe 2019 (O9 Dogters)	2019-02-16	2019-02-23	Rapid	West Coast (WCU)	3	3	2.5	Yes	Analysis

#	Games	Start				End
1	5	Tournament St Helenabaai Open 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-09	rnd 4	type Rapid	result 1	date 2019-02-16	rnd 3	type Rapid	result 1
		Opponent Ellman, A (Andries)				Opponent Mouton, K (Kari)
2	4	Tournament Lower West Coast Primary Schools Prestige Championships 2023				Tournament Lower West Coast Primary Schools Prestige Championships 2023
		date 2023-03-04	rnd 2	type Rapid	result 1	date 2023-03-04	rnd 5	type Rapid	result 1
		Opponent Thiart, A (Annelie)				Opponent Dirks, J (Jamielee)
3	3	Tournament Weskus Topskole 2019				Tournament Onder Weskus Prestige 2020
		date 2019-07-20	rnd 3	type Rapid	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Burger, M (Mari)				Opponent Esterhuizen, A (Antru)

#	Games	Start				End
1	2	Tournament Onder Weskus Prestige 2020				Tournament Onder Weskus Prestige 2020
		date 2020-02-15	rnd 1	type Standard	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Joshua, T (Taveney)				Opponent Esterhuizen, A (Antru)
2	2	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-18	rnd 4	type Standard	result 0.5	date 2019-05-19	rnd 5	type Standard	result 0.5
		Opponent Cloete, L (Leigh-Marcia)				Opponent Hendricks, L (Lakeisha)
3	2	Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2019-04-06	rnd 5	type Standard	result 1	date 2019-04-06	rnd 6	type Standard	result 0.5
		Opponent Peters, C (Chantel)				Opponent Joseph, V (Vernitrune)

#	Games	Start				End
1	5	Tournament St Helenabaai Open 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-09	rnd 4	type Rapid	result 1	date 2019-02-16	rnd 3	type Rapid	result 1
		Opponent Ellman, A (Andries)				Opponent Mouton, K (Kari)
2	4	Tournament Lower West Coast Primary Schools Prestige Championships 2023				Tournament Lower West Coast Primary Schools Prestige Championships 2023
		date 2023-03-04	rnd 2	type Rapid	result 1	date 2023-03-04	rnd 5	type Rapid	result 1
		Opponent Thiart, A (Annelie)				Opponent Dirks, J (Jamielee)
3	1	Tournament Lower West Coast Schools Prestige 2022				Tournament Lower West Coast Schools Prestige 2022
		date 2022-03-19	rnd 2	type Rapid	result 1	date 2022-03-19	rnd 2	type Rapid	result 1
		Opponent Laubser, G (Grace)				Opponent Laubser, G (Grace)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Weskus Topskole 2019				Tournament Onder Weskus Prestige 2020
		date 2019-07-20	rnd 3	type Rapid	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Burger, M (Mari)				Opponent Esterhuizen, A (Antru)
2	3	Tournament St Helenabaai Open 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-09	rnd 4	type Rapid	result 1	date 2019-02-16	rnd 1	type Rapid	result 1
		Opponent Ellman, A (Andries)				Opponent Steenkamp, G (Glene)
3	2	Tournament Lower West Coast Primary Schools Prestige Championships 2023				Tournament Lower West Coast Primary Schools Prestige Championships 2023
		date 2023-03-04	rnd 2	type Rapid	result 1	date 2023-03-04	rnd 3	type Rapid	result 1
		Opponent Thiart, A (Annelie)				Opponent Manonge, R (Rimbidzai)

#	Games	Start				End
1	2	Tournament Onder Weskus Prestige 2020				Tournament Onder Weskus Prestige 2020
		date 2020-02-15	rnd 1	type Standard	result 1	date 2020-02-15	rnd 2	type Standard	result 1
		Opponent Joshua, T (Taveney)				Opponent Esterhuizen, A (Antru)
2	2	Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2019-03-02	rnd 2	type Standard	result 1	date 2019-03-02	rnd 3	type Standard	result 1
		Opponent Owies, C (Chamica)				Opponent Blankenberg, S (Shasa-Lee)
3	1	Tournament Onder Weskus Prestige 2020				Tournament Onder Weskus Prestige 2020
		date 2020-02-22	rnd 5	type Standard	result 1	date 2020-02-22	rnd 5	type Standard	result 1
		Opponent Van Deventer, P (Pieter-Nel)				Opponent Van Deventer, P (Pieter-Nel)

#	Games	Start				End
1	3	Tournament St Helenabaai Open 2019				Tournament Onder-Weskus Skole Proewe 2019
		date 2019-02-09	rnd 4	type Rapid	result 1	date 2019-02-16	rnd 1	type Rapid	result 1
		Opponent Ellman, A (Andries)				Opponent Steenkamp, G (Glene)
2	2	Tournament Lower West Coast Primary Schools Prestige Championships 2023				Tournament Lower West Coast Primary Schools Prestige Championships 2023
		date 2023-03-04	rnd 2	type Rapid	result 1	date 2023-03-04	rnd 3	type Rapid	result 1
		Opponent Thiart, A (Annelie)				Opponent Manonge, R (Rimbidzai)
3	1	Tournament Lower West Coast Primary Schools Prestige Championships 2023				Tournament Lower West Coast Primary Schools Prestige Championships 2023
		date 2023-03-04	rnd 5	type Rapid	result 1	date 2023-03-04	rnd 5	type Rapid	result 1
		Opponent Dirks, J (Jamielee)				Opponent Dirks, J (Jamielee)

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	Lewaks ,A (Andrea)	4	0	-425	1	0	-425	3	0	-425	0	0	0
1	Lewaks ,A (Andrea)	4	1165.9	740.9	1	1080.7	740.9	3	1277.9	740.9	0	0	0
2	Cloete ,L (Leigh-Marcia)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
2	Cloete ,L (Leigh-Marcia)	2	1101.3	888.8	2	1088.4	888.8	0	0	0	0	0	0
3	Kleynhans ,C (Caylen)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Kleynhans ,C (Caylen)	2	1231.9	806.9	1	1200	806.9	1	1195.8	806.9	0	0	0
4	Peters ,C (Chantel)	2	1	0	1	1	425	1	0	-425	0	0	0
4	Peters ,C (Chantel)	2	1097.6	1097.6	1	1076.8	1522.6	1	1200	672.6	0	0	0
5	Schoeman ,M (Mischke)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	Schoeman ,M (Mischke)	2	1280.2	855.2	1	1200	855.2	1	1431.3	855.2	0	0	0
6	Meintjies ,D (Danielle)	2	0.5	-212.5	0	0	0	2	0.5	-212.5	0	0	0
6	Meintjies ,D (Danielle)	2	1200	987.5	0	0	0	2	1200	987.5	0	0	0
7	Mdluli ,B (Ben)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Mdluli ,B (Ben)	1	1203.5	778.5	1	1199.8	778.5	0	0	0	0	0	0
8	Badenhorst ,A (Anina)	1	1	425	1	1	425	0	0	0	0	0	0
8	Badenhorst ,A (Anina)	1	1153.9	1578.9	1	1150.4	1578.9	0	0	0	0	0	0
9	Siebritz ,N (Noelle)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Siebritz ,N (Noelle)	1	1360.6	935.6	1	1292.9	935.6	0	0	0	0	0	0
10	Kruger ,R (Riasha)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Kruger ,R (Riasha)	1	1182.1	757.1	1	1180.4	757.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Groenewaldt, K (Katja)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms