Chess South Africa Ratings Database

PLAYER PAGE

Personal

Laurie, JD (John Diederik)

Chess SA id

171017232

FIDE id

Date of birth

1971-10-27 (Adult)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1993.2	1986.2	1976.1	2021.9
Raw rating	1977.3	1972	1976.1	2021.9
Weighted rating	1993.2	1986.2	1975	2021.9
Weighted performance	1290.4	554.6	1188.5	0
Floor	1546.7	1537.8	1520.2	1569.9
K-factor	20	20	20	20
Min/Max rating change allowed	54.8	55.2	54.9	51.4
Highest rating	2046.7 2018-12-01	2037.8 2019-12-01	2208 2018-11-01	2203.5 2018-02-01
Highest raw rating	2046.7 2018-12-01	2037.8 2019-12-01	2020.2 2019-12-01	2069.9 2018-12-01
Highest weighted rating	2046.7 2021-09-01	2037.8 2021-09-01	2020.2 2021-03-01	2069.9 2019-03-01
Highest weighted performance	1991.6 2018-11-01	2029.2 2018-09-01	2208 2018-11-01	2203.5 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.5	-1.3	0	0
New rating	1991.7	1984.9	1976.1	2021.9
Analysis
Rating	1993.2	1986.2	1976.1	2021.9
Raw rating	1977.3	1972	1976.1	2021.9
Weighted rating	1993.2	1986.2	1975
Weighted performance	1290.4	554.6	1188.5
K-factor	20	20	20	20
Floor	1546.7	1537.8	1520.2	1569.9
Max/Min rating change allowed	54.8	55.2	54.9	51.4
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	1977.3	1972	1976.1	2021.9
New weighted rating	1991.7	1984.9	1974.9	2021.9
New weighted performance	1278.9	542.3	1176.7	0
Temp new rating	1991.7	1984.9	1976.1	2021.9
Temp new rating +/-	-1.5	-1.3	0	0
Final new rating +/-	-1.5	-1.3	0	0
New rating	1991.7	1984.9	1976.1	2021.9
New K-factor	20	20	20	20
New floor	1546.7	1537.8	1520.2	1569.9

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	15	8	7	0
	7	0	7	0
	6	0	6	0
	6	6	0	0
	0	0	0	0
History	232	140	44	48

Games since
	Main 22	Standard 8		Rapid 14		Blitz 0
Gender	Male
Age group	Adult
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	9	60	85	1807.4	1892.4
Standard	8	5.5	68.75	159.4	1736.4	1895.8
Rapid	7	3.5	50	0	1888.5	1888.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	124	76.5	61.69	99.4	1867.6	1967
Standard	58	36.5	62.93	109.9	1841.9	1951.9
Rapid	39	24.5	62.82	109	1841.7	1950.7
Blitz	27	15.5	57.41	63	1959.9	2022.8

Date	Main	Standard	Rapid	Blitz
2026-01-01	1977.3	1972	1976.1	2021.9
2025-11-30	1977.3	1972	1976.1	2021.9
2025-11-01	1977.3	1972	1976.1	2021.9
2025-09-30	1997.9	1990.4	1976.1	2021.9
2025-09-01	1997.9	1990.4	1976.1	2021.9
2025-08-01	1997.9	1990.4	1976.1	2021.9
2025-07-01	1997.8	1990.4	1976.1	2021.9
2025-06-01	1997.5	1990.4	1976.1	2021.9
2025-05-01	1996.7	1990.4	1974.7	2021.9
2025-04-01	1997.8	1990.4	1977.3	2021.9
2025-03-01	1997.8	1990.4	1977.3	2021.9
2025-02-01	1997.8	1990.4	1977.1	2021.9
2025-01-01	1997.8	1990.4	1969.4	2021.9
2024-12-01	1997.8	1990.4	1969.4	2021.9
2024-11-01	1997.8	1990.4	1969.4	2021.9
2024-10-01	1997.8	1990.4	1969.4	2021.9
2024-09-01	1997.8	1990.4	1969.4	2021.9
2024-11-01	1997.8	1990.4	1969.4	2021.9
2024-07-01	1997.8	1990.4	1969.4	2021.9
2024-06-01	1997.8	1990.4	1969.4	2021.9
2024-05-01	1997.8	1990.4	1969.4	2021.9
2024-04-01	2006.2	1990.4	1995.8	2021.9
2024-03-01	2006.2	1990.4	1995.8	2021.9
2024-02-01	2006.2	1990.4	1995.8	2021.9

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	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	8	5.5	Yes	Analysis
2	Hermanus Chess Club Open 2025 (Championship)	2025-04-12	2025-04-12	Rapid	Overberg (WOS)	7	7	3.5	Yes	Analysis
3	Hermanus Chess Club Open 2024 (Championship)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	7	3.5	Yes	Analysis
4	WP Club League 2023 (A)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	0	0	No	Analysis
5	Hermanus Rapid 2023 (A)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
6	Steinitz Open 2022 (A)	2022-05-20	2022-05-22	Standard	Cape Town (WCT)	6	6	1.5	Yes	Analysis
7	2019 National Club Chess Championships (A)	2019-09-27	2019-09-29	Standard	Cape Town (WCT)	6	6	5.5	Yes	Analysis
8	2019 Western Province League (Premier)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	11	8.5	Yes	Analysis
9	2019 Elsies River Open (Elite)	2019-06-22	2019-06-23	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
10	2019 Cape Town Classic Chess Festival (Rapid)	2019-03-30	2019-03-30	Rapid	Cape Town (WCT)	7	7	5.5	Yes	Analysis
11	2019 Cape Town Classic Chess Festival (Blitz)	2019-03-29	2019-03-29	Blitz	Cape Town (WCT)	9	8	4	Yes	Analysis
12	Cape of Good Hope Open 2019 (Elite)	2019-01-25	2019-01-27	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
13	Graham Solomon Memorial 2018 (Rapid)	2018-11-24	2018-11-24	Rapid	Cape Town (WCT)	6	6	4.5	Yes	Analysis
14	Graham Solomon Memorial 2018 (Blitz)	2018-11-25	2018-11-25	Blitz	Cape Town (WCT)	12	12	6.5	Yes	Analysis
15	Jakes Gerwel Aurecon 2018 (Prestige)	2018-10-13	2018-10-13	Rapid	Cape Town (WCT)	7	6	3.5	Yes	Analysis
16	2018 Western Province League (Premier)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	9	7	Yes	Analysis
17	Grassy Park Open 2018 (Elite)	2018-06-29	2018-07-01	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
18	WP Team Blitz 2018 (A)	2018-02-17	2018-02-17	Blitz	Cape Town (WCT)	7	7	5	Yes	Analysis

#	Games	Start				End
1	8	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-08-24	rnd 10	type Standard	result 1	date 2019-09-29	rnd 6	type Standard	result 1
		Opponent October, M (Mario)				Opponent Flores Bartoli, A (Andrew)
2	6	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-07-27	rnd 1	type Standard	result 1	date 2019-08-10	rnd 6	type Standard	result 0.5
		Opponent Maravanyika, C (Charlton)				Opponent Hempe, LH (Lilitha)
3	6	Tournament 2019 Cape Town Classic Chess Festival				Tournament 2019 Elsies River Open
		date 2019-03-30	rnd 5	type Rapid	result 0.5	date 2019-06-22	rnd 3	type Standard	result 1
		Opponent Bouah, D (Denise)				Opponent Salimu, R (Reuben)

#	Games	Start				End
1	8	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-08-24	rnd 10	type Standard	result 1	date 2019-09-29	rnd 6	type Standard	result 1
		Opponent October, M (Mario)				Opponent Flores Bartoli, A (Andrew)
2	6	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-07-27	rnd 1	type Standard	result 1	date 2019-08-10	rnd 6	type Standard	result 0.5
		Opponent Maravanyika, C (Charlton)				Opponent Hempe, LH (Lilitha)
3	4	Tournament 2018 Western Province League				Tournament 2018 Western Province League
		date 2018-08-18	rnd 5	type Standard	result 1	date 2018-09-01	rnd 8	type Standard	result 1
		Opponent Cruywagen, JC (Johannes)				Opponent London, L (Leslie)

#	Games	Start				End
1	6	Tournament Jakes Gerwel Aurecon 2018				Tournament Graham Solomon Memorial 2018
		date 2018-10-13	rnd 5	type Rapid	result 1	date 2018-11-24	rnd 3	type Rapid	result 0.5
		Opponent Coert, Q (Quinton)				Opponent Solomon, KT (Kenneth)
2	5	Tournament 2019 Cape Town Classic Chess Festival				Tournament Hermanus Rapid 2023
		date 2019-03-30	rnd 5	type Rapid	result 0.5	date 2023-04-22	rnd 2	type Rapid	result 1
		Opponent Bouah, D (Denise)				Opponent Ncethelo, B (Bongolethu)
3	5	Tournament Graham Solomon Memorial 2018				Tournament 2019 Cape Town Classic Chess Festival
		date 2018-11-24	rnd 5	type Rapid	result 1	date 2019-03-30	rnd 3	type Rapid	result 1
		Opponent Amini, D (Daud)				Opponent Amini, D (Daud)

#	Games	Start				End
1	4	Tournament WP Team Blitz 2018				Tournament Graham Solomon Memorial 2018
		date 2018-02-17	rnd 6	type Blitz	result 1	date 2018-11-25	rnd 2	type Blitz	result 1
		Opponent Solomon, MC (Maxwell)				Opponent Solomon, MC (Maxwell)
2	3	Tournament 2019 Cape Town Classic Chess Festival				Tournament 2019 Cape Town Classic Chess Festival
		date 2019-03-29	rnd 7	type Blitz	result 1	date 2019-03-29	rnd 9	type Blitz	result 1
		Opponent Masama, BT (Bruce)				Opponent Kalala, A (Alladean)
3	3	Tournament Graham Solomon Memorial 2018				Tournament Graham Solomon Memorial 2018
		date 2018-11-25	rnd 8	type Blitz	result 1	date 2018-11-25	rnd 10	type Blitz	result 1
		Opponent Salimu, R (Reuben)				Opponent Amini, D (Daud)

#	Games	Start				End
1	6	Tournament 2019 Cape Town Classic Chess Festival				Tournament 2019 Cape Town Classic Chess Festival
		date 2019-03-29	rnd 7	type Blitz	result 1	date 2019-03-30	rnd 3	type Rapid	result 1
		Opponent Masama, BT (Bruce)				Opponent Amini, D (Daud)
2	5	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-08-24	rnd 10	type Standard	result 1	date 2019-09-28	rnd 3	type Standard	result 1
		Opponent October, M (Mario)				Opponent De Jager, LJ (Luan)
3	5	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-07-27	rnd 1	type Standard	result 1	date 2019-08-10	rnd 5	type Standard	result 1
		Opponent Maravanyika, C (Charlton)				Opponent Willenberg, A (Athon)

#	Games	Start				End
1	5	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-08-24	rnd 10	type Standard	result 1	date 2019-09-28	rnd 3	type Standard	result 1
		Opponent October, M (Mario)				Opponent De Jager, LJ (Luan)
2	5	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-07-27	rnd 1	type Standard	result 1	date 2019-08-10	rnd 5	type Standard	result 1
		Opponent Maravanyika, C (Charlton)				Opponent Willenberg, A (Athon)
3	4	Tournament 2018 Western Province League				Tournament 2018 Western Province League
		date 2018-08-18	rnd 5	type Standard	result 1	date 2018-09-01	rnd 8	type Standard	result 1
		Opponent Cruywagen, JC (Johannes)				Opponent London, L (Leslie)

#	Games	Start				End
1	5	Tournament Graham Solomon Memorial 2018				Tournament 2019 Cape Town Classic Chess Festival
		date 2018-11-24	rnd 5	type Rapid	result 1	date 2019-03-30	rnd 3	type Rapid	result 1
		Opponent Amini, D (Daud)				Opponent Amini, D (Daud)
2	4	Tournament 2019 Cape Town Classic Chess Festival				Tournament Hermanus Rapid 2023
		date 2019-03-30	rnd 6	type Rapid	result 1	date 2023-04-22	rnd 2	type Rapid	result 1
		Opponent Masama, BT (Bruce)				Opponent Ncethelo, B (Bongolethu)
3	3	Tournament Jakes Gerwel Aurecon 2018				Tournament Graham Solomon Memorial 2018
		date 2018-10-13	rnd 7	type Rapid	result 1	date 2018-11-24	rnd 2	type Rapid	result 1
		Opponent Klaase, S (Shane)				Opponent Klaasen, CJ (Calvin)

#	Games	Start				End
1	4	Tournament WP Team Blitz 2018				Tournament Graham Solomon Memorial 2018
		date 2018-02-17	rnd 6	type Blitz	result 1	date 2018-11-25	rnd 2	type Blitz	result 1
		Opponent Solomon, MC (Maxwell)				Opponent Solomon, MC (Maxwell)
2	3	Tournament 2019 Cape Town Classic Chess Festival				Tournament 2019 Cape Town Classic Chess Festival
		date 2019-03-29	rnd 7	type Blitz	result 1	date 2019-03-29	rnd 9	type Blitz	result 1
		Opponent Masama, BT (Bruce)				Opponent Kalala, A (Alladean)
3	3	Tournament Graham Solomon Memorial 2018				Tournament Graham Solomon Memorial 2018
		date 2018-11-25	rnd 8	type Blitz	result 1	date 2018-11-25	rnd 10	type Blitz	result 1
		Opponent Salimu, R (Reuben)				Opponent Amini, D (Daud)

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	Salimu ,R (Reuben)	6	3	0	3	1	-141.7	2	1	0	1	1	425
1	Salimu ,R (Reuben)	6	1925.8	1925.8	3	1936.9	1784.1	2	1985.7	1925.8	1	1960.6	2350.8
2	Klaasen ,CJ (Calvin John)	4	1	-212.5	2	0	-425	2	1	0	0	0	0
2	Klaasen ,CJ (Calvin John)	4	2245.9	2033.4	2	2267.1	1820.9	2	2226.6	2245.9	0	0	0
3	Kobese ,AKW (Watu)	4	1.5	-106.2	1	0.5	0	2	0	-425	1	1	425
3	Kobese ,AKW (Watu)	4	2329	2222.8	1	2354.1	2329	2	2307.1	1904	1	2350.3	2754
4	Willenberg ,CG (Craig Glen)	4	0	-425	1	0	-425	1	0	-425	2	0	-425
4	Willenberg ,CG (Craig Glen)	4	2099.6	1674.6	1	2112	1674.6	1	2116.5	1674.6	2	2156.3	1674.6
5	Amini ,D (Daud)	4	3	212.5	0	0	0	2	2	425	2	1	0
5	Amini ,D (Daud)	4	2074.8	2287.3	0	0	0	2	2099	2499.8	2	2084.9	2074.8
6	Hempe ,LH (Lilitha Hlomla)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
6	Hempe ,LH (Lilitha Hlomla)	3	1760.5	1760.5	3	1754.4	1760.5	0	0	0	0	0	0
7	Baxter ,DJ (David Jarred)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
7	Baxter ,DJ (David Jarred)	3	1718.1	1859.8	3	1730.1	1859.8	0	0	0	0	0	0
8	Mncwabe ,M (Minenhle Junior)	3	3	425	2	2	425	1	1	425	0	0	0
8	Mncwabe ,M (Minenhle Junior)	3	1668.6	2093.6	2	1667.9	2093.6	1	1647.2	2093.6	0	0	0
9	Bhawoodien ,SH (Shabier Husain)	3	1	-141.7	2	0	-425	0	0	0	1	1	425
9	Bhawoodien ,SH (Shabier Husain)	3	2092.5	1950.8	2	2113.9	1667.5	0	0	0	1	2116.8	2517.5
10	Flores Bartoli ,A (Andrew)	2	1	0	2	1	0	0	0	0	0	0	0
10	Flores Bartoli ,A (Andrew)	2	1727.8	1727.8	2	1729.9	1727.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Laurie, JD (John Diederik)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms