Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, J (Janco)

Chess SA id

1140305146

FIDE id

Date of birth

2014-01-16 (U12)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-05

Personal details last changed

1900-01-01

Junior GPX Games

24.3

Junior GPX Points

1077

Item	Main	Standard	Rapid	Blitz
Rating	1125.8	1113.6	1216.5	1200
Raw rating	1089.7	1067	1216.5	1200
Weighted rating	1125.8	1113.6	1204.9	1200
Weighted performance	989.8	919.5	0	0
Floor	700	700	716.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	194	200.4	162	165.8
Highest rating	1200 2024-05-01	1200 2024-05-01	1216.5 2025-08-01	1200 2024-05-01
Highest raw rating	1200 2024-05-01	1200 2024-05-01	1216.5 2025-08-01	1200 2024-05-01
Highest weighted rating	1200 2024-05-01	1200 2024-05-01	1201.3 2025-08-01	1200 2024-05-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-3.7	-4.8	0	0
New rating	1122.1	1108.8	1216.5	1200
Analysis
Rating	1125.8	1113.6	1216.5	1200
Raw rating	1089.7	1067	1216.5	1200
Weighted rating	1125.8	1113.6	1204.9
Weighted performance	989.8	919.5	0
K-factor	36	36	36	36
Floor	700	700	716.5	700
Max/Min rating change allowed	194	200.4	162	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	1089.7	1067	1216.5	1200
New weighted rating	1122.1	1108.8	1206	1200
New weighted performance	983.6	913.7	0	0
Temp new rating	1122.1	1108.8	1216.5	1200
Temp new rating +/-	-3.7	-4.8	0	0
Final new rating +/-	-3.7	-4.8	0	0
New rating	1122.1	1108.8	1216.5	1200
New K-factor	36	36	36	36
New floor	700	700	716.5	700

Item	Main	Standard	Rapid
	0	0	0
	16	11	5
	38	38	0
	0	0	0
	0	0	0
	0	0	0
History	54	49	5

Games since
	Main 54	Standard 49		Rapid 5		Blitz 0
Gender	Male
Age group	U12
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	4435		265		205
Male	3246		210		160
U12	756		49		42
U12 Male	511		37		30
Standard
	RSA		Province		Region
Overall	4435		325		220
Male	3242		253		173
U12	739		60		48
U12 Male	501		46		35
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	16	4	25	-212.5	1258.6	1046.1
Standard	11	1	9.09	-347.7	1290.1	942.4
Rapid	5	3	60	85	1189.3	1274.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	54	14.5	26.85	-196.8	1229.3	1032.5
Standard	49	11.5	23.47	-225.5	1233.3	1007.8
Rapid	5	3	60	85	1189.3	1274.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1089.7	1067	1216.5	1200
2025-09-30	1152.7	1126.8	1216.5	1200
2025-09-01	1152.7	1126.8	1216.5	1200
2025-08-01	1152.7	1126.8	1216.5	1200
2025-07-01	1132.8	1126.8	1200	1200
2025-06-01	1132.8	1126.8	1200	1200
2025-05-01	1132.8	1126.8	1200	1200
2025-04-01	1132.8	1126.8	1200	1200
2025-03-01	1132.8	1126.6	1200	1200
2025-02-01	1133.3	1127.7	1200	1200
2025-01-01	1086	1081.6	1200	1200
2024-12-01	1086	1081.6	1200	1200
2024-11-01	1086	1081.6	1200	1200
2024-10-01	1042.5	1031.2	1200	1200
2024-09-01	1061.4	1052	1200	1200
2024-08-01	1125	1111.2	1200	1200
2024-07-01	1116.4	1098.4	1200	1200
2024-09-01	1125	1105.6	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Bojanala's FIDE On The Orion Express 2025 (Knights)	2025-10-04	2025-10-05	Standard	Bojanala Platina (NBR)	7	6	0	Yes	Analysis
2	Bojanala's Clash Of Schools -Primary Schools 2025 (Seniors)	2025-07-26	2025-07-26	Rapid	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
3	Bojanala's Battle In The Kloof 2025 (Knights)	2025-02-15	2025-02-15	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Bojanala's FIDE On The Orion Express 2025 (Knights)	2025-10-04	2025-10-05	Standard	Bojanala Platina (NBR)	7	6	0	Yes	Analysis
2	Bojanala's Clash Of Schools -Primary Schools 2025 (Seniors)	2025-07-26	2025-07-26	Rapid	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
3	Bojanala's Battle In The Kloof 2025 (Knights)	2025-02-15	2025-02-15	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
4	Bojanala's e4 In The Chapel 2024 (Knights)	2024-10-26	2024-10-26	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
5	Bojanala's Circuit Championships 4 of 4 204 (U12)	2024-10-12	2024-10-12	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
6	Bojanala's Battle In The Kloof 2024 (Bishops)	2024-09-21	2024-09-21	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
7	Bojanala Circuit Championships 3 of 4 2024 (U12)	2024-09-14	2024-09-14	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
8	Bojanala's FIDE In The Sparkling Waters 2024 (Junior Champs)	2024-08-17	2024-08-17	Standard	Bojanala Platina (NBR)	5	4	0	Yes	Analysis
9	Bojanala's Clash Of Schools 2024 (U13)	2024-07-20	2024-07-20	Standard	Bojanala Platina (NBR)	5	4	2	Yes	Analysis
10	Bojanala Circuit Championship 2 of 4 2024 (U12)	2024-06-15	2024-06-15	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
11	Bojanala Circuit Championship 1 of 4 2024 (U12)	2024-05-25	2024-05-25	Standard	Bojanala Platina (NBR)	5	5	0.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 3	type Rapid	result 1
		Opponent Diphale, A (Angel)				Opponent Lesele, R (Reatlegile)
2	2	Tournament Bojanala's e4 In The Chapel 2024				Tournament Bojanala's e4 In The Chapel 2024
		date 2024-10-26	rnd 4	type Standard	result 1	date 2024-10-26	rnd 5	type Standard	result 1
		Opponent Weber, U (Ulrich)				Opponent Molefe, M (Mphoentle)
3	2	Tournament Bojanala Circuit Championship 2 of 4 2024				Tournament Bojanala Circuit Championship 2 of 4 2024
		date 2024-06-15	rnd 3	type Standard	result 1	date 2024-06-15	rnd 4	type Standard	result 1
		Opponent Matlala, L (Leano)				Opponent Zwane, K (Koketso)

#	Games	Start				End
1	2	Tournament Bojanala's e4 In The Chapel 2024				Tournament Bojanala's e4 In The Chapel 2024
		date 2024-10-26	rnd 4	type Standard	result 1	date 2024-10-26	rnd 5	type Standard	result 1
		Opponent Weber, U (Ulrich)				Opponent Molefe, M (Mphoentle)
2	2	Tournament Bojanala Circuit Championship 2 of 4 2024				Tournament Bojanala Circuit Championship 2 of 4 2024
		date 2024-06-15	rnd 3	type Standard	result 1	date 2024-06-15	rnd 4	type Standard	result 1
		Opponent Matlala, L (Leano)				Opponent Zwane, K (Koketso)
3	1	Tournament Bojanala's Battle In The Kloof 2025				Tournament Bojanala's Battle In The Kloof 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Komani, L (Luthandolwethu)				Opponent Komani, L (Luthandolwethu)

#	Games	Start				End
1	3	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 3	type Rapid	result 1
		Opponent Diphale, A (Angel)				Opponent Lesele, R (Reatlegile)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 3	type Rapid	result 1
		Opponent Diphale, A (Angel)				Opponent Lesele, R (Reatlegile)
2	2	Tournament Bojanala's e4 In The Chapel 2024				Tournament Bojanala's e4 In The Chapel 2024
		date 2024-10-26	rnd 4	type Standard	result 1	date 2024-10-26	rnd 5	type Standard	result 1
		Opponent Weber, U (Ulrich)				Opponent Molefe, M (Mphoentle)
3	2	Tournament Bojanala Circuit Championship 2 of 4 2024				Tournament Bojanala Circuit Championship 2 of 4 2024
		date 2024-06-15	rnd 3	type Standard	result 1	date 2024-06-15	rnd 4	type Standard	result 1
		Opponent Matlala, L (Leano)				Opponent Zwane, K (Koketso)

#	Games	Start				End
1	2	Tournament Bojanala's e4 In The Chapel 2024				Tournament Bojanala's e4 In The Chapel 2024
		date 2024-10-26	rnd 4	type Standard	result 1	date 2024-10-26	rnd 5	type Standard	result 1
		Opponent Weber, U (Ulrich)				Opponent Molefe, M (Mphoentle)
2	2	Tournament Bojanala Circuit Championship 2 of 4 2024				Tournament Bojanala Circuit Championship 2 of 4 2024
		date 2024-06-15	rnd 3	type Standard	result 1	date 2024-06-15	rnd 4	type Standard	result 1
		Opponent Matlala, L (Leano)				Opponent Zwane, K (Koketso)
3	1	Tournament Bojanala's Battle In The Kloof 2025				Tournament Bojanala's Battle In The Kloof 2025
		date 2025-02-15	rnd 3	type Standard	result 1	date 2025-02-15	rnd 3	type Standard	result 1
		Opponent Komani, L (Luthandolwethu)				Opponent Komani, L (Luthandolwethu)

#	Games	Start				End
1	3	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 3	type Rapid	result 1
		Opponent Diphale, A (Angel)				Opponent Lesele, R (Reatlegile)

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	Thipe ,O (Oreabetse)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Thipe ,O (Oreabetse)	3	1229.3	804.3	3	1228	804.3	0	0	0	0	0	0
2	Pilane ,M (Maemo)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Pilane ,M (Maemo)	3	1256.3	831.3	3	1296.7	831.3	0	0	0	0	0	0
3	Diphoko ,P (Phitlhello)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Diphoko ,P (Phitlhello)	3	1225.6	800.6	3	1194.6	800.6	0	0	0	0	0	0
4	Molefe ,M (Mphoentle)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
4	Molefe ,M (Mphoentle)	2	1137.6	1350.1	2	1129.4	1350.1	0	0	0	0	0	0
5	Terblanche ,B (Bernard)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Terblanche ,B (Bernard)	2	1373.8	948.8	2	1374.1	948.8	0	0	0	0	0	0
6	Botha ,W (Wian)	2	1	0	2	1	0	0	0	0	0	0	0
6	Botha ,W (Wian)	2	1132.1	1132.1	2	1117.2	1132.1	0	0	0	0	0	0
7	Zwane ,K (Koketso)	2	1	0	2	1	0	0	0	0	0	0	0
7	Zwane ,K (Koketso)	2	897.9	897.9	2	886.3	897.9	0	0	0	0	0	0
8	Coetzee ,C (Coenie)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Coetzee ,C (Coenie)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Ngubo ,O (Olwethu)	1	1	425	1	1	425	0	0	0	0	0	0
9	Ngubo ,O (Olwethu)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Taperesu ,K (Kaelyn Lynelle)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Taperesu ,K (Kaelyn Lynelle)	1	1228.2	803.2	1	1223.5	803.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Coetzee, J (Janco)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms