Chess South Africa Ratings Database

PLAYER PAGE

Personal

Werkman, R (Robert Josua)

Chess SA id

1130140602

FIDE id

Date of birth

2013-11-12 (U14)

Gender

Male

Region

Dr Kenneth Kaunda (NWP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-06

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1292.3

Item	Main	Standard	Rapid	Blitz
Rating	1301.8	1306.1	1200	1200
Raw rating	1301.8	1306.1	1200	1200
Weighted rating	1287.7	1287.6	1200	1200
Weighted performance	1195.1	1195.3	0	0
Floor	801.8	806.1	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	143.4	142.6	165.8	165.8
Highest rating	1301.8 2025-09-30	1306.1 2025-09-30	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1301.8 2025-09-30	1306.1 2025-09-30	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1301.2 2024-10-01	1304.8 2024-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1300 2023-03-01	1298.6 2023-03-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	44.8	54	0	0
New rating	1346.6	1360.1	1200	1200
Analysis
Rating	1301.8	1306.1	1200	1200
Raw rating	1301.8	1306.1	1200	1200
Weighted rating	1287.7	1287.6	1200
Weighted performance	1195.1	1195.3	0
K-factor	36	36	36	36
Floor	801.8	806.1	700	700
Max/Min rating change allowed	143.4	142.6	165.8	165.8
Games	5	5	0	0
Score	4	4	0	0
Expected score	2.75	2.5	0	0
Score-Expected	1.25	1.5	0	0
Temp raw +/-	44.8	54	0	0
Final raw +/-	44.8	54	0	0
New raw rating	1346.6	1360.1	1200	1200
New weighted rating	1292.5	1293.5	1200	1200
New weighted performance	1332.1	1332.9	0	0
Temp new rating	1346.6	1360.1	1200	1200
Temp new rating +/-	44.8	54	0	0
Final new rating +/-	44.8	54	0	0
New rating	1346.6	1360.1	1200	1200
New K-factor	36	36	36	36
New floor	846.6	860.1	700	700

Item	Main	Standard
	0	0
	10	10
	24	24
	20	20
	28	28
	0	0
History	82	82

Games since
	Main 34	Standard 34		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Dr Kenneth Kaunda (NWP)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	3001		205		37
Male	2368		174		33
U14	563		33		8
U14 Male	404		29		8
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	10	6	60	85	1270.4	1355.4
Standard	10	6	60	85	1270.4	1355.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	82	43.5	53.05	25.9	1224.6	1250.5
Standard	82	43.5	53.05	25.9	1224.6	1250.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1301.8	1306.1	1200	1200
2025-09-01	1291.6	1292.4	1200	1200
2025-08-01	1291.6	1292.4	1200	1200
2025-07-01	1291.6	1292.4	1200	1200
2025-06-01	1291.6	1292.4	1200	1200
2025-05-01	1291.6	1292.4	1200	1200
2025-04-01	1291.6	1292.4	1200	1200
2025-03-01	1291.6	1292.4	1200	1200
2025-02-01	1279.3	1277.5	1200	1200
2025-01-01	1239.3	1233.9	1200	1200
2024-12-01	1293.1	1292.6	1200	1200
2024-11-01	1293.1	1292.6	1200	1200
2024-10-01	1293.1	1292.6	1200	1200
2024-09-01	1269.2	1263.4	1200	1200
2024-08-01	1269.2	1263.4	1200	1200
2024-07-01	1291.6	1291.5	1200	1200
2024-06-01	1291.6	1291.5	1200	1200
2024-08-01	1291.6	1291.5	1200	1200
2024-04-01	1291.6	1291.5	1200	1200
2024-03-01	1301.2	1304.8	1200	1200
2024-02-01	1283.9	1283.2	1200	1200
2024-01-01	1283.9	1283.2	1200	1200
2023-12-01	1283.9	1283.2	1200	1200
2023-11-01	1283.9	1283.2	1200	1200

Comming soon.

Tournaments

History

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Dr KK Regional Trials Potch 2025 (U14)	2025-09-27	2025-09-27	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Dr KK Regional Trials Potch 2025 (U14)	2025-09-27	2025-09-27	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
2	Dr KK Regional Trials 2025 (U14)	2025-09-06	2025-09-06	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
3	DR KK Volkies 2025 (U12)	2025-02-01	2025-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Dr KK Regional Trials Potch 2025 (U14)	2025-09-27	2025-09-27	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
2	Dr KK Regional Trials 2025 (U14)	2025-09-06	2025-09-06	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
3	DR KK Volkies 2025 (U12)	2025-02-01	2025-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
4	Gauteng Inter-Region at UJ 2024 (U12 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
5	DR KKD Mooirivier Trials 2024 (U12)	2024-09-14	2024-09-14	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
6	DR KK Gimmies 2024 (U12)	2024-07-13	2024-07-13	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
7	DR KKD Ferdies Mar 2024 (E)	2024-03-02	2024-03-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
8	DR KKD Curro Feb 2024 (U12)	2024-02-10	2024-02-10	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
9	DR KKD Trials 2023 (U12)	2023-09-02	2023-09-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
10	DR Kenneth Kaunda Volkies 29 Jul 2023 (D)	2023-07-29	2023-07-29	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
11	Dr KKD NG Goudkop 2023 (D Junior)	2023-03-18	2023-03-18	Standard	Dr Kenneth Kaunda (NWP)	5	5	5	Yes	Analysis
12	Dr. Kenneth Kaunda Saamtrek 2023 (U12)	2023-02-04	2023-02-04	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
13	2022 South African Junior Team Chess Championships (U12 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	5	2	Yes	Analysis
14	Dr. KKD SAJCC Trials September 2022 (U8+U10)	2022-09-03	2022-09-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
15	Dr. KKD Volkskool 2022 (U10)	2022-08-20	2022-08-20	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
16	La Hoff Primary School 2022 (D)	2022-07-23	2022-07-23	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
17	Bailie Park Potchefstroom 2022 (U8+U10)	2022-06-04	2022-06-04	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
18	Ferdinand Postma Potchefstroom 2022 (C)	2022-04-09	2022-04-09	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament Dr KKD NG Goudkop 2023				Tournament DR Kenneth Kaunda Volkies 29 Jul 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent Gweshe, T (Tinotenda)				Opponent Stols, Z (Zenica)
2	4	Tournament DR KKD Trials 2023				Tournament DR KKD Curro Feb 2024
		date 2023-09-02	rnd 4	type Standard	result 1	date 2024-02-10	rnd 2	type Standard	result 1
		Opponent Jordaan, M (Marco)				Opponent Van Der Westhuizen, T (Thomas)
3	4	Tournament La Hoff Primary School 2022				Tournament Dr. KKD Volkskool 2022
		date 2022-07-23	rnd 5	type Standard	result 1	date 2022-08-20	rnd 3	type Standard	result 1
		Opponent Alberts, A (Andreas)				Opponent Van Romburgh, J (Jan)

#	Games	Start				End
1	6	Tournament Dr KKD NG Goudkop 2023				Tournament DR Kenneth Kaunda Volkies 29 Jul 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent Gweshe, T (Tinotenda)				Opponent Stols, Z (Zenica)
2	4	Tournament DR KKD Trials 2023				Tournament DR KKD Curro Feb 2024
		date 2023-09-02	rnd 4	type Standard	result 1	date 2024-02-10	rnd 2	type Standard	result 1
		Opponent Jordaan, M (Marco)				Opponent Van Der Westhuizen, T (Thomas)
3	4	Tournament La Hoff Primary School 2022				Tournament Dr. KKD Volkskool 2022
		date 2022-07-23	rnd 5	type Standard	result 1	date 2022-08-20	rnd 3	type Standard	result 1
		Opponent Alberts, A (Andreas)				Opponent Van Romburgh, J (Jan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Dr KKD NG Goudkop 2023				Tournament DR Kenneth Kaunda Volkies 29 Jul 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent Gweshe, T (Tinotenda)				Opponent Stols, Z (Zenica)
2	4	Tournament DR KKD Trials 2023				Tournament DR KKD Curro Feb 2024
		date 2023-09-02	rnd 4	type Standard	result 1	date 2024-02-10	rnd 2	type Standard	result 1
		Opponent Jordaan, M (Marco)				Opponent Van Der Westhuizen, T (Thomas)
3	4	Tournament La Hoff Primary School 2022				Tournament Dr. KKD Volkskool 2022
		date 2022-07-23	rnd 5	type Standard	result 1	date 2022-08-20	rnd 3	type Standard	result 1
		Opponent Alberts, A (Andreas)				Opponent Van Romburgh, J (Jan)

#	Games	Start				End
1	6	Tournament Dr KKD NG Goudkop 2023				Tournament DR Kenneth Kaunda Volkies 29 Jul 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent Gweshe, T (Tinotenda)				Opponent Stols, Z (Zenica)
2	4	Tournament DR KKD Trials 2023				Tournament DR KKD Curro Feb 2024
		date 2023-09-02	rnd 4	type Standard	result 1	date 2024-02-10	rnd 2	type Standard	result 1
		Opponent Jordaan, M (Marco)				Opponent Van Der Westhuizen, T (Thomas)
3	4	Tournament La Hoff Primary School 2022				Tournament Dr. KKD Volkskool 2022
		date 2022-07-23	rnd 5	type Standard	result 1	date 2022-08-20	rnd 3	type Standard	result 1
		Opponent Alberts, A (Andreas)				Opponent Van Romburgh, J (Jan)

No games found.

#	Games	Start				End

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	Van Der Westhuizen ,T (Thomas)	5	1	-255	5	1	-255	0	0	0	0	0	0
1	Van Der Westhuizen ,T (Thomas)	5	1331	1076	5	1330	1076	0	0	0	0	0	0
2	Van Romburgh ,J (Jan)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
2	Van Romburgh ,J (Jan)	4	1071	1283.5	4	1048.1	1283.5	0	0	0	0	0	0
3	Van Zyl ,A (Albertus Petrus)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Van Zyl ,A (Albertus Petrus)	3	1372.2	1230.6	3	1371.9	1230.6	0	0	0	0	0	0
4	Labuschagne ,G (Gian)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Labuschagne ,G (Gian)	3	1255	1113.3	3	1253	1113.3	0	0	0	0	0	0
5	Appels ,CJ (Chathem Jordan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
5	Appels ,CJ (Chathem Jordan)	3	1398.8	1257.1	3	1393.5	1257.1	0	0	0	0	0	0
6	Jordaan ,M (Marco)	2	1	0	2	1	0	0	0	0	0	0	0
6	Jordaan ,M (Marco)	2	1237	1237	2	1236.2	1237	0	0	0	0	0	0
7	Labuschagne ,P (Phillip)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Labuschagne ,P (Phillip)	2	1220.8	795.8	2	1223.6	795.8	0	0	0	0	0	0
8	Rheder ,D (Dihan)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
8	Rheder ,D (Dihan)	2	1204.2	1416.7	2	1206.8	1416.7	0	0	0	0	0	0
9	Lemotlo ,S (Siyabonga Keora)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Lemotlo ,S (Siyabonga Keora)	2	1330.6	905.6	2	1344.6	905.6	0	0	0	0	0	0
10	Gouws ,C (Christiaan)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Gouws ,C (Christiaan)	2	1502.4	1077.4	2	1501.6	1077.4	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

Werkman, R (Robert Josua)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms