Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, R (Riko)

Chess SA id

1150136650

FIDE id

Date of birth

2015-09-17 (U12)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-12-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1083.5	1073.7	1200	1200
Raw rating	1083.5	1073.7	1200	1200
Weighted rating	1081.8	1072.3	1200	1200
Weighted performance	918.2	910.1	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	195.7	198.5	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 2019-12-01	1200 2019-12-01	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 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1083.5	1073.7	1200	1200
Analysis
Rating	1083.5	1073.7	1200	1200
Raw rating	1083.5	1073.7	1200	1200
Weighted rating	1081.8	1072.3	1200
Weighted performance	918.2	910.1	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	195.7	198.5	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	1083.5	1073.7	1200	1200
New weighted rating	1081.8	1072.2	1200	1200
New weighted performance	917.8	909.8	0	0
Temp new rating	1083.5	1073.7	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1083.5	1073.7	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	31	31
	5	5
	10	10
	0	0
History	46	46

Games since
	Main 31	Standard 31		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	4342		1522		594
Male	3171		1138		443
U12	728		259		105
U12 Male	493		181		71
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	46	15	32.61	-147.8	1179.4	1031.6
Standard	46	15	32.61	-147.8	1179.4	1031.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1083.5	1073.7	1200	1200
2025-09-01	1083.5	1073.7	1200	1200
2025-08-01	1083.5	1073.7	1200	1200
2025-07-01	1083.5	1073.7	1200	1200
2025-06-01	1083.5	1073.7	1200	1200
2025-05-01	1083.5	1073.7	1200	1200
2025-04-01	1083.5	1073.7	1200	1200
2025-03-01	1083.5	1073.7	1200	1200
2025-02-01	1082.6	1072.7	1200	1200
2025-01-01	1064.7	1055.2	1200	1200
2024-12-01	1057.2	1048.8	1200	1200
2024-11-01	1057.2	1048.8	1200	1200
2024-10-01	1057.2	1048.8	1200	1200
2024-09-01	1112.8	1108.8	1200	1200
2024-08-01	1112.8	1108.8	1200	1200
2024-07-01	1087.2	1076	1200	1200
2024-06-01	1087.2	1076	1200	1200
2024-08-01	1087.2	1076	1200	1200
2024-04-01	1087.2	1076	1200	1200
2024-03-01	1091.8	1080.4	1200	1200
2024-02-01	1071.5	1055.2	1200	1200
2024-01-01	1098.7	1086.4	1200	1200
2023-12-01	1098.7	1086.4	1200	1200
2023-11-01	1098.7	1086.4	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 UJ 2024 (U10 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
2	2024 Etienne Lewis (U10)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	6	1	Yes	Analysis
3	2024 Midstream College Open Chess Tournament (U10)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
4	2024 Chris Greyling Open Chess Tournament (E)	2024-03-16	2024-03-16	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
5	2024 Piet Robbertse Open Chess Tournament (E)	2024-02-03	2024-02-03	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
6	2024 Tshwane Chess OPEN Registration Tournament (E)	2024-01-27	2024-01-27	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
7	Laerskool Constantiapark Open Chess Tournament 2023 (U10)	2023-02-18	2023-02-18	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	CP Ope 2022 (F)	2022-02-19	2022-02-19	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
9	2022 Tshwane Chess Open Registration Tournament (F)	2022-01-29	2022-01-29	Standard	Tshwane (GTP)	5	5	0.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament 2024 Midstream College Open Chess Tournament				Tournament 2024 Midstream College Open Chess Tournament
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-07-20	rnd 4	type Standard	result 0.5
		Opponent Maloka, J (Junior)				Opponent Rizvi, Z (Zara)
2	2	Tournament CP Ope 2022				Tournament Laerskool Constantiapark Open Chess Tournament 2023
		date 2022-02-19	rnd 5	type Standard	result 0.5	date 2023-02-18	rnd 1	type Standard	result 1
		Opponent Maree, D (David)				Opponent Vorster, J (James)
3	1	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-08	rnd 5	type Standard	result 1	date 2024-12-08	rnd 5	type Standard	result 1
		Opponent Kleijnhans, M (Mila)				Opponent Kleijnhans, M (Mila)

#	Games	Start				End
1	3	Tournament 2024 Midstream College Open Chess Tournament				Tournament 2024 Midstream College Open Chess Tournament
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-07-20	rnd 4	type Standard	result 0.5
		Opponent Maloka, J (Junior)				Opponent Rizvi, Z (Zara)
2	2	Tournament CP Ope 2022				Tournament Laerskool Constantiapark Open Chess Tournament 2023
		date 2022-02-19	rnd 5	type Standard	result 0.5	date 2023-02-18	rnd 1	type Standard	result 1
		Opponent Maree, D (David)				Opponent Vorster, J (James)
3	1	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-08	rnd 5	type Standard	result 1	date 2024-12-08	rnd 5	type Standard	result 1
		Opponent Kleijnhans, M (Mila)				Opponent Kleijnhans, M (Mila)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2024 Midstream College Open Chess Tournament				Tournament 2024 Midstream College Open Chess Tournament
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent Maloka, J (Junior)				Opponent Wang, Z (Zhihao)
2	1	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-08	rnd 5	type Standard	result 1	date 2024-12-08	rnd 5	type Standard	result 1
		Opponent Kleijnhans, M (Mila)				Opponent Kleijnhans, M (Mila)
3	1	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-07	rnd 2	type Standard	result 1	date 2024-12-07	rnd 2	type Standard	result 1
		Opponent Carr, P (Phillip Stuart)				Opponent Carr, P (Phillip Stuart)

#	Games	Start				End
1	2	Tournament 2024 Midstream College Open Chess Tournament				Tournament 2024 Midstream College Open Chess Tournament
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent Maloka, J (Junior)				Opponent Wang, Z (Zhihao)
2	1	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-08	rnd 5	type Standard	result 1	date 2024-12-08	rnd 5	type Standard	result 1
		Opponent Kleijnhans, M (Mila)				Opponent Kleijnhans, M (Mila)
3	1	Tournament Gauteng Inter-Region at UJ 2024				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-12-07	rnd 2	type Standard	result 1	date 2024-12-07	rnd 2	type Standard	result 1
		Opponent Carr, P (Phillip Stuart)				Opponent Carr, P (Phillip Stuart)

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	Mandyu ,D (Dineo)	2	2	425	2	2	425	0	0	0	0	0	0
1	Mandyu ,D (Dineo)	2	1146.6	1571.6	2	1139.6	1571.6	0	0	0	0	0	0
2	Erdogan ,D (Demir)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Erdogan ,D (Demir)	2	1259.2	834.2	2	1257.5	834.2	0	0	0	0	0	0
3	Coetzee ,A (Adriaan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	Coetzee ,A (Adriaan)	2	1099.2	886.7	2	1095	886.7	0	0	0	0	0	0
4	Jansen Van Vuuren ,G (Griffin)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
4	Jansen Van Vuuren ,G (Griffin)	2	1075.9	863.4	2	1063.7	863.4	0	0	0	0	0	0
5	Zhang ,Y (Yufeng)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
5	Zhang ,Y (Yufeng)	2	1184.6	972.1	2	1180.7	972.1	0	0	0	0	0	0
6	Fourie ,M (Marchant)	2	1	0	2	1	0	0	0	0	0	0	0
6	Fourie ,M (Marchant)	2	1218.4	1218.4	2	1217	1218.4	0	0	0	0	0	0
7	Rocher ,G (Gideon)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Rocher ,G (Gideon)	1	1260.4	835.4	1	1255.4	835.4	0	0	0	0	0	0
8	Vorster ,J (James)	1	1	425	1	1	425	0	0	0	0	0	0
8	Vorster ,J (James)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Joubert ,J (Joshua)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Joubert ,J (Joshua)	1	1161.6	736.6	1	1167.6	736.6	0	0	0	0	0	0
10	Rahlaga ,K (Kaelo Alupheli)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Rahlaga ,K (Kaelo Alupheli)	1	1248	823	1	1242.4	823	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Coetzee, R (Riko)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms