Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, D (Dian)

Chess SA id

1110108119

FIDE id

Date of birth

2011-03-02 (U16)

Gender

Male

Region

Lejweleputswa (FLW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-12-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1087.7	1078.7	1200	1200
Raw rating	1087.1	1077.9	1200	1200
Weighted rating	1087.7	1078.7	1200	1200
Weighted performance	921.5	916.5	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	194.8	197.3	165.8	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 2024-02-01	1200 2024-02-01
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 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.2	0.3	0	0
New rating	1087.8	1078.9	1200	1200
Analysis
Rating	1087.7	1078.7	1200	1200
Raw rating	1087.1	1077.9	1200	1200
Weighted rating	1087.7	1078.7	1200
Weighted performance	921.5	916.5	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	194.8	197.3	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	1087.1	1077.9	1200	1200
New weighted rating	1087.8	1078.9	1200	1200
New weighted performance	921.2	916.1	0	0
Temp new rating	1087.8	1078.9	1200	1200
Temp new rating +/-	0.2	0.3	0	0
Final new rating +/-	0.2	0.3	0	0
New rating	1087.8	1078.9	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	16	16
	14	14
	0	0
	4	4
History	59	59

Games since
	Main 16	Standard 16		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Lejweleputswa (FLW)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	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	59	20.5	34.75	-129.7	1211.4	1081.8
Standard	59	20.5	34.75	-129.7	1211.4	1081.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1087.1	1077.9	1200	1200
2025-09-01	1087.1	1077.9	1200	1200
2025-08-01	1087.1	1077.9	1200	1200
2025-07-01	1086.7	1077.4	1200	1200
2025-06-01	1086.4	1076.9	1200	1200
2025-05-01	1085.9	1076.8	1200	1200
2025-04-01	1085.5	1076.8	1200	1200
2025-03-01	1085.3	1076.8	1200	1200
2025-02-01	1085.3	1076.8	1200	1200
2025-01-01	1085.3	1076.8	1200	1200
2024-12-01	1098.5	1092.4	1200	1200
2024-11-01	1098.5	1092.4	1200	1200
2024-10-01	1098.5	1092.4	1200	1200
2024-09-01	1092.8	1084.8	1200	1200
2024-08-01	1092.8	1084.8	1200	1200
2024-07-01	1092.8	1084.8	1200	1200
2024-06-01	1092.8	1084.8	1200	1200
2024-08-01	1092.8	1084.8	1200	1200
2024-04-01	1069.3	1053.2	1200	1200
2024-03-01	1069.3	1053.2	1200	1200
2024-02-01	1069.3	1053.2	1200	1200
2024-01-01	1069.3	1053.2	1200	1200
2023-12-01	1069.3	1053.2	1200	1200
2023-11-01	1069.3	1053.2	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	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Candidates)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	0	0	No	Analysis
2	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Candidates)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	6	1.5	Yes	Analysis
3	Lejweleputswa Closed Chess Championships 2024 (U14)	2024-09-21	2024-09-21	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
4	Lejweleputswa 3rd Qualifieng Tournament 2024 (U14)	2024-04-20	2024-04-20	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
5	Inter Regional Chess Championship 2023 (U14)	2023-05-19	2023-05-20	Standard	Mangaung (FMB)	5	2	1	Yes	Analysis
6	Lejweleputswa 4th Qualifying Tournament 2023 (U14)	2023-05-26	2023-05-26	Standard	Lejweleputswa (FLW)	5	4	1	Yes	Analysis
7	Lejweleputswa 3rd Qualifieng Tournament 2023 (D)	2023-04-21	2023-04-21	Standard	Lejweleputswa (FLW)	5	4	1	Yes	Analysis
8	Lejweleputswa 2nd Qualifieng Tournament 2023 (D)	2023-03-25	2023-03-25	Standard	Lejweleputswa (FLW)	5	4	0.5	Yes	Analysis
9	Lejweleputswa 3rd Qualifying Tournament 2021 (C)	2021-04-24	2021-04-24	Standard	Lejweleputswa (FLW)	5	4	0	Yes	Analysis
10	Lejweleputswa 7th Qualifying Swiss Open Tournament 2019 (U10)	2019-06-15	2019-06-15	Standard	Lejweleputswa (FLW)	5	5	1.5	Yes	Analysis
11	Lejweleputswa 6th Qualifying Swiss Open Tournament 2019 (F)	2019-05-25	2019-05-25	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
12	Lejweleputswa 5th Qualifier 2019 (U10)	2019-04-13	2019-04-13	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
13	Lejweleputswa 4th Qualifying Swiss Open Tournament 2019 (F)	2019-03-16	2019-03-16	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
14	Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019 (F)	2019-01-26	2019-01-26	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Lejweleputswa 5th Qualifier 2019				Tournament Lejweleputswa 6th Qualifying Swiss Open Tournament 2019
		date 2019-04-13	rnd 3	type Standard	result 1	date 2019-05-25	rnd 2	type Standard	result 0.5
		Opponent Radebe, B (Boitumelo)				Opponent Neethling, I (Ivan)
2	3	Tournament Lejweleputswa 3rd Qualifieng Tournament 2024				Tournament Lejweleputswa 3rd Qualifieng Tournament 2024
		date 2024-04-20	rnd 2	type Standard	result 1	date 2024-04-20	rnd 4	type Standard	result 0.5
		Opponent Masheane, T (Thoriso)				Opponent Cornelissen, T (Tinus)
3	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2023				Tournament Inter Regional Chess Championship 2023
		date 2023-04-21	rnd 5	type Standard	result 1	date 2023-05-19	rnd 1	type Standard	result 1
		Opponent Verwey, J (Jolene)				Opponent Beelders, K (Kyra)

#	Games	Start				End
1	5	Tournament Lejweleputswa 5th Qualifier 2019				Tournament Lejweleputswa 6th Qualifying Swiss Open Tournament 2019
		date 2019-04-13	rnd 3	type Standard	result 1	date 2019-05-25	rnd 2	type Standard	result 0.5
		Opponent Radebe, B (Boitumelo)				Opponent Neethling, I (Ivan)
2	3	Tournament Lejweleputswa 3rd Qualifieng Tournament 2024				Tournament Lejweleputswa 3rd Qualifieng Tournament 2024
		date 2024-04-20	rnd 2	type Standard	result 1	date 2024-04-20	rnd 4	type Standard	result 0.5
		Opponent Masheane, T (Thoriso)				Opponent Cornelissen, T (Tinus)
3	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2023				Tournament Inter Regional Chess Championship 2023
		date 2023-04-21	rnd 5	type Standard	result 1	date 2023-05-19	rnd 1	type Standard	result 1
		Opponent Verwey, J (Jolene)				Opponent Beelders, K (Kyra)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2024				Tournament Lejweleputswa 3rd Qualifieng Tournament 2024
		date 2024-04-20	rnd 2	type Standard	result 1	date 2024-04-20	rnd 3	type Standard	result 1
		Opponent Masheane, T (Thoriso)				Opponent Plaatjies, K (Kimberly)
2	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2023				Tournament Inter Regional Chess Championship 2023
		date 2023-04-21	rnd 5	type Standard	result 1	date 2023-05-19	rnd 1	type Standard	result 1
		Opponent Verwey, J (Jolene)				Opponent Beelders, K (Kyra)
3	2	Tournament Lejweleputswa 5th Qualifier 2019				Tournament Lejweleputswa 5th Qualifier 2019
		date 2019-04-13	rnd 3	type Standard	result 1	date 2019-04-13	rnd 4	type Standard	result 1
		Opponent Radebe, B (Boitumelo)				Opponent Le Roux, K (Kiara)

#	Games	Start				End
1	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2024				Tournament Lejweleputswa 3rd Qualifieng Tournament 2024
		date 2024-04-20	rnd 2	type Standard	result 1	date 2024-04-20	rnd 3	type Standard	result 1
		Opponent Masheane, T (Thoriso)				Opponent Plaatjies, K (Kimberly)
2	2	Tournament Lejweleputswa 3rd Qualifieng Tournament 2023				Tournament Inter Regional Chess Championship 2023
		date 2023-04-21	rnd 5	type Standard	result 1	date 2023-05-19	rnd 1	type Standard	result 1
		Opponent Verwey, J (Jolene)				Opponent Beelders, K (Kyra)
3	2	Tournament Lejweleputswa 5th Qualifier 2019				Tournament Lejweleputswa 5th Qualifier 2019
		date 2019-04-13	rnd 3	type Standard	result 1	date 2019-04-13	rnd 4	type Standard	result 1
		Opponent Radebe, B (Boitumelo)				Opponent Le Roux, K (Kiara)

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	Molongoana ,P (Peo)	4	0	-425	4	0	-425	0	0	0	0	0	0
1	Molongoana ,P (Peo)	4	1299.4	874.4	4	1295.2	874.4	0	0	0	0	0	0
2	Michalakis ,S (Stefanos)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Michalakis ,S (Stefanos)	3	1372.2	947.2	3	1367.9	947.2	0	0	0	0	0	0
3	Rasego ,B (Bohlokwa)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
3	Rasego ,B (Bohlokwa)	3	1181.5	898.1	3	1178	898.1	0	0	0	0	0	0
4	Seekoei ,A (Amolegang)	2	1	0	2	1	0	0	0	0	0	0	0
4	Seekoei ,A (Amolegang)	2	1195.8	1195.8	2	1194.6	1195.8	0	0	0	0	0	0
5	Plaatjies ,K (Kimberly)	2	2	425	2	2	425	0	0	0	0	0	0
5	Plaatjies ,K (Kimberly)	2	1189.8	1614.8	2	1187.6	1614.8	0	0	0	0	0	0
6	Simelane ,B (Boitumelo)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
6	Simelane ,B (Boitumelo)	2	1199.3	1411.8	2	1199.2	1411.8	0	0	0	0	0	0
7	Steyn ,J (Johannes)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Steyn ,J (Johannes)	2	1229.8	804.8	2	1191.3	804.8	0	0	0	0	0	0
8	Neethling ,I (Ivan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
8	Neethling ,I (Ivan)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
9	Molete ,K (Keabetsoe)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Molete ,K (Keabetsoe)	1	1249.4	824.4	1	1259.2	824.4	0	0	0	0	0	0
10	Swart ,C (Christiaan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Swart ,C (Christiaan)	1	946.5	521.5	1	945.3	521.5	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

Coetzee, D (Dian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms