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

2025-12-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1408.7	1408.3	1200	1200
Raw rating	1396.7	1408.3	1200	1200
Weighted rating	1305.4	1308.3	1200	1200
Weighted performance	1408.7	1405.8	0	0
Floor	896.7	908.3	700	700
K-factor	36	32	36	36
Min/Max rating change allowed	125.3	123.2	165.8	165.8
Highest rating	1408.7 2026-01-01	1408.3 2026-01-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1396.7 2026-01-01	1408.3 2026-01-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1305.4 2026-01-01	1308.3 2026-01-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1408.7 2026-01-01	1405.8 2026-01-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-9.5	0	0	0
New rating	1399.1	1408.3	1200	1200
Analysis
Rating	1408.7	1408.3	1200	1200
Raw rating	1396.7	1408.3	1200	1200
Weighted rating	1305.4	1308.3	1200
Weighted performance	1408.7	1405.8	0
K-factor	36	32	36	36
Floor	896.7	908.3	700	700
Max/Min rating change allowed	125.3	123.2	165.8	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	1396.7	1408.3	1200	1200
New weighted rating	1313.4	1317.2	1200	1200
New weighted performance	1399.1	1396.3	0	0
Temp new rating	1399.1	1408.3	1200	1200
Temp new rating +/-	-9.5	0	0	0
Final new rating +/-	-9.5	0	0	0
New rating	1399.1	1408.3	1200	1200
New K-factor	36	32	36	36
New floor	896.7	908.3	700	700

Item	Main	Standard
	0	0
	15	15
	24	24
	20	20
	28	28
	0	0
History	87	87

Games since
	Main 39	Standard 39		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	2530		184		36
Male	2029		154		29
U14	442		23		5
U14 Male	321		20		5
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	15	10	66.67	141.7	1284	1425.7
Standard	15	10	66.67	141.7	1284	1425.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	87	47.5	54.6	39.1	1229.5	1268.6
Standard	87	47.5	54.6	39.1	1229.5	1268.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1396.7	1408.3	1200	1200
2025-11-30	1346.6	1360.1	1200	1200
2025-11-01	1346.6	1360.1	1200	1200
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
2024-11-01	1269.2	1263.4	1200	1200
2024-07-01	1291.6	1291.5	1200	1200
2024-06-01	1291.6	1291.5	1200	1200
2024-05-01	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

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	Gauteng Inter-Region at Emerald Resort 2025 (U14 Championship)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
2	Dr KK Regional Trials Potch 2025 (U14)	2025-09-27	2025-09-27	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
3	Dr KK Regional Trials 2025 (U14)	2025-09-06	2025-09-06	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
4	DR KK Volkies 2025 (U12)	2025-02-01	2025-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
5	Gauteng Inter-Region at UJ 2024 (U12 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	1.5	Yes	Analysis
6	DR KKD Mooirivier Trials 2024 (U12)	2024-09-14	2024-09-14	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
7	DR KK Gimmies 2024 (U12)	2024-07-13	2024-07-13	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
8	DR KKD Ferdies Mar 2024 (E)	2024-03-02	2024-03-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
9	DR KKD Curro Feb 2024 (U12)	2024-02-10	2024-02-10	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
10	DR KKD Trials 2023 (U12)	2023-09-02	2023-09-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
11	DR Kenneth Kaunda Volkies 29 Jul 2023 (D)	2023-07-29	2023-07-29	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
12	Dr KKD NG Goudkop 2023 (D Junior)	2023-03-18	2023-03-18	Standard	Dr Kenneth Kaunda (NWP)	5	5	5	Yes	Analysis
13	Dr. Kenneth Kaunda Saamtrek 2023 (U12)	2023-02-04	2023-02-04	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
14	2022 South African Junior Team Chess Championships (U12 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	5	2	Yes	Analysis
15	Dr. KKD SAJCC Trials September 2022 (U8+U10)	2022-09-03	2022-09-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
16	Dr. KKD Volkskool 2022 (U10)	2022-08-20	2022-08-20	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
17	La Hoff Primary School 2022 (D)	2022-07-23	2022-07-23	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
18	Bailie Park Potchefstroom 2022 (U8+U10)	2022-06-04	2022-06-04	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
19	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	Appels ,CJ (Chathem Jordan)	4	2	0	4	2	0	0	0	0	0	0	0
2	Appels ,CJ (Chathem Jordan)	4	1403.5	1403.5	4	1401.7	1403.5	0	0	0	0	0	0
3	Van Romburgh ,J (Jan)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
3	Van Romburgh ,J (Jan)	4	1071	1283.5	4	1048.1	1283.5	0	0	0	0	0	0
4	Van Zyl ,A (Albertus Petrus)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Van Zyl ,A (Albertus Petrus)	3	1372.2	1230.6	3	1371.9	1230.6	0	0	0	0	0	0
5	Labuschagne ,G (Gian)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
5	Labuschagne ,G (Gian)	3	1255	1113.3	3	1253	1113.3	0	0	0	0	0	0
6	Gouws ,CJ (Christiaan)	3	0	-425	3	0	-425	0	0	0	0	0	0
6	Gouws ,CJ (Christiaan)	3	1530.1	1105.1	3	1529.8	1105.1	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	Scholtz ,M (Matthew)	2	2	425	2	2	425	0	0	0	0	0	0
10	Scholtz ,M (Matthew)	2	1228.7	1653.7	2	1231.7	1653.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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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