Chess South Africa Ratings Database

PLAYER PAGE

Personal

Mametja, B (Bonolo)

Chess SA id

105069512

FIDE id

Date of birth

2005-09-22 (Adult)

Gender

Male

Region

Nkangala (MNW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1131.4	1016.5	1152.8	908.1
Raw rating	1131.4	1016.5	1152.8	908.1
Weighted rating	1131.4	1016.5	1152.8	908.1
Weighted performance	265.4	0	167.7	0
Floor	641.7	516.5	652.8	500
K-factor	40	40	40	40
Min/Max rating change allowed	182.8	215.4	177.3	251.3
Highest rating	1299.3 2018-01-01	1200 2018-02-01	1367.7 2018-01-01	1200 2024-02-01
Highest raw rating	1141.7 2019-05-01	1016.5 2024-02-01	1152.8 2024-02-01	908.1 2024-02-01
Highest weighted rating	1141.7 2024-11-01	1016.5 2024-11-01	1152.8 2024-11-01	908.1 2024-11-01
Highest weighted performance	1299.3 2018-01-01	1200 2018-02-01	1367.7 2018-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1131.4	1016.5	1152.8	908.1
Analysis
Rating	1131.4	1016.5	1152.8	908.1
Raw rating	1131.4	1016.5	1152.8	908.1
Weighted rating	1131.4	1016.5	1152.8
Weighted performance	265.4	0	167.7
K-factor	40	40	40	40
Floor	641.7	516.5	652.8	500
Max/Min rating change allowed	182.8	215.4	177.3	251.3
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	1131.4	1016.5	1152.8	908.1
New weighted rating	1131.4	1016.5	1152.8	908.1
New weighted performance	264.9	0	167.3	0
Temp new rating	1131.4	1016.5	1152.8	908.1
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1131.4	1016.5	1152.8	908.1
New K-factor	40	40	40	40
New floor	641.7	516.5	652.8	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	127	92	35

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Nkangala (MNW)
Province	Mpumalanga (MP)
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	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	45	29	64.44	122.8	1043.2	1165.9
Standard	20	10.5	52.5	21.2	1095.8	1117
Rapid	25	18.5	74	204	1001.1	1205.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1131.4	1016.5	1152.8	908.1
2025-09-01	1131.4	1016.5	1152.8	908.1
2025-08-01	1131.4	1016.5	1152.8	908.1
2025-07-01	1131.4	1016.5	1152.8	908.1
2025-06-01	1131.4	1016.5	1152.8	908.1
2025-05-01	1131.4	1016.5	1152.8	908.1
2025-04-01	1131.4	1016.5	1152.8	908.1
2025-03-01	1131.4	1016.5	1152.8	908.1
2025-02-01	1131.4	1016.5	1152.8	908.1
2025-01-01	1131.4	1016.5	1152.8	908.1
2024-12-01	1131.4	1016.5	1152.8	908.1
2024-11-01	1131.4	1016.5	1152.8	908.1
2024-10-01	1131.4	1016.5	1152.8	908.1
2024-09-01	1131.4	1016.5	1152.8	908.1
2024-08-01	1131.4	1016.5	1152.8	908.1
2024-07-01	1131.4	1016.5	1152.8	908.1
2024-06-01	1131.4	1016.5	1152.8	908.1
2024-08-01	1131.4	1016.5	1152.8	908.1
2024-04-01	1131.4	1016.5	1152.8	908.1
2024-03-01	1131.4	1016.5	1152.8	908.1
2024-02-01	1131.4	1016.5	1152.8	908.1
2024-01-01	1131.4	1016.5	1152.8	908.1
2023-12-01	1131.4	1016.5	1152.8	908.1
2023-11-01	1131.4	1016.5	1152.8	908.1

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	Nkangala 2nd Tournament St Thomas Aquinas School 2020 (A+B)	2020-02-08	2020-02-08	Standard	Nkangala (MNW)	5	5	3	Yes	Analysis
2	Nkangala 4th Tournament Steelcrest High School - Middelburg 2019 (D)	2019-05-04	2019-05-04	Standard	Nkangala (MNW)	5	5	1.5	Yes	Analysis
3	Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019 (D)	2019-04-13	2019-04-13	Rapid	Nkangala (MNW)	5	5	4.5	Yes	Analysis
4	Nkangala 2nd Tournament St Thomas Aquinas School 2019 (C)	2019-02-23	2019-02-23	Standard	Nkangala (MNW)	5	5	3	Yes	Analysis
5	Nkangala 1st Tournamant Laerskool President CR Swart 2019 (C)	2019-02-02	2019-02-02	Rapid	Nkangala (MNW)	5	5	3.5	Yes	Analysis
6	Nkangala 5th Tournament Laerskool Panorama - Witbank 2018 (D)	2018-07-28	2018-07-28	Standard	Nkangala (MNW)	5	5	3	Yes	Analysis
7	3rd Nkangala Tournament Curro School 2018 (D)	2018-03-24	2018-03-24	Rapid	Nkangala (MNW)	5	5	2.5	Yes	Analysis
8	Nkangala 1st Tournament Curro - Witbank 2018 (D)	2018-02-24	2018-02-24	Rapid	Nkangala (MNW)	5	5	3	Yes	Analysis
9	Nkangala 1st Tournament Curro - Witbank 2018 (D+E)	2018-01-27	2018-01-27	Rapid	Nkangala (MNW)	5	5	5	Yes	Analysis

#	Games	Start				End
1	8	Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2019				Tournament Nkangala 4th Tournament Steelcrest High School - Middelburg 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-05-04	rnd 1	type Standard	result 1
		Opponent Mngomezulu, A (Abahle)				Opponent Mkhabela, NS (Njabulo Sibusiso)
2	7	Tournament Nkangala 1st Tournament Curro - Witbank 2018				Tournament Nkangala 1st Tournament Curro - Witbank 2018
		date 2018-01-27	rnd 1	type Rapid	result 1	date 2018-02-24	rnd 2	type Rapid	result 1
		Opponent Masilela, T (Themba)				Opponent Tebogo, L (Ledwaba)
3	4	Tournament Nkangala 1st Tournamant Laerskool President CR Swart 2019				Tournament Nkangala 1st Tournamant Laerskool President CR Swart 2019
		date 2019-02-02	rnd 1	type Rapid	result 1	date 2019-02-02	rnd 4	type Rapid	result 1
		Opponent Mbuyane, B (Bongamusa)				Opponent Nkosi, L (Lindo)

#	Games	Start				End
1	3	Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2019				Tournament Nkangala 4th Tournament Steelcrest High School - Middelburg 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-05-04	rnd 1	type Standard	result 1
		Opponent Mngomezulu, A (Abahle)				Opponent Mkhabela, NS (Njabulo Sibusiso)
2	3	Tournament Nkangala 5th Tournament Laerskool Panorama - Witbank 2018				Tournament Nkangala 5th Tournament Laerskool Panorama - Witbank 2018
		date 2018-07-28	rnd 1	type Standard	result 1	date 2018-07-28	rnd 3	type Standard	result 1
		Opponent Gautier, N (Nicholas)				Opponent Gautier, J (Johnathan)
3	2	Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2020				Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2020
		date 2020-02-08	rnd 1	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Van Dyk, K (Kira)				Opponent Joubert, GCD (Coenraad)

#	Games	Start				End
1	7	Tournament Nkangala 1st Tournament Curro - Witbank 2018				Tournament Nkangala 1st Tournament Curro - Witbank 2018
		date 2018-01-27	rnd 1	type Rapid	result 1	date 2018-02-24	rnd 2	type Rapid	result 1
		Opponent Masilela, T (Themba)				Opponent Tebogo, L (Ledwaba)
2	5	Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019				Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019
		date 2019-04-13	rnd 1	type Rapid	result 1	date 2019-04-13	rnd 5	type Rapid	result 1
		Opponent Makgoga, B (Boitumelo)				Opponent Lutchman, R (Rishal)
3	4	Tournament Nkangala 1st Tournamant Laerskool President CR Swart 2019				Tournament Nkangala 1st Tournamant Laerskool President CR Swart 2019
		date 2019-02-02	rnd 1	type Rapid	result 1	date 2019-02-02	rnd 4	type Rapid	result 1
		Opponent Mbuyane, B (Bongamusa)				Opponent Nkosi, L (Lindo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Nkangala 1st Tournament Curro - Witbank 2018				Tournament Nkangala 1st Tournament Curro - Witbank 2018
		date 2018-01-27	rnd 1	type Rapid	result 1	date 2018-02-24	rnd 2	type Rapid	result 1
		Opponent Masilela, T (Themba)				Opponent Tebogo, L (Ledwaba)
2	5	Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2019				Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-04-13	rnd 3	type Rapid	result 1
		Opponent Mngomezulu, A (Abahle)				Opponent Fouche, P (Philip)
3	3	Tournament Nkangala 5th Tournament Laerskool Panorama - Witbank 2018				Tournament Nkangala 5th Tournament Laerskool Panorama - Witbank 2018
		date 2018-07-28	rnd 1	type Standard	result 1	date 2018-07-28	rnd 3	type Standard	result 1
		Opponent Gautier, N (Nicholas)				Opponent Gautier, J (Johnathan)

#	Games	Start				End
1	3	Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2019				Tournament Nkangala 4th Tournament Steelcrest High School - Middelburg 2019
		date 2019-02-23	rnd 4	type Standard	result 1	date 2019-05-04	rnd 1	type Standard	result 1
		Opponent Mngomezulu, A (Abahle)				Opponent Mkhabela, NS (Njabulo Sibusiso)
2	3	Tournament Nkangala 5th Tournament Laerskool Panorama - Witbank 2018				Tournament Nkangala 5th Tournament Laerskool Panorama - Witbank 2018
		date 2018-07-28	rnd 1	type Standard	result 1	date 2018-07-28	rnd 3	type Standard	result 1
		Opponent Gautier, N (Nicholas)				Opponent Gautier, J (Johnathan)
3	2	Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2020				Tournament Nkangala 2nd Tournament St Thomas Aquinas School 2020
		date 2020-02-08	rnd 1	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Van Dyk, K (Kira)				Opponent Joubert, GCD (Coenraad)

#	Games	Start				End
1	7	Tournament Nkangala 1st Tournament Curro - Witbank 2018				Tournament Nkangala 1st Tournament Curro - Witbank 2018
		date 2018-01-27	rnd 1	type Rapid	result 1	date 2018-02-24	rnd 2	type Rapid	result 1
		Opponent Masilela, T (Themba)				Opponent Tebogo, L (Ledwaba)
2	3	Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019				Tournament Nkangala 3rd Tournament St Thomas Aquinas School - Witbank 2019
		date 2019-04-13	rnd 1	type Rapid	result 1	date 2019-04-13	rnd 3	type Rapid	result 1
		Opponent Makgoga, B (Boitumelo)				Opponent Fouche, P (Philip)
3	3	Tournament Nkangala 1st Tournament Curro - Witbank 2018				Tournament 3rd Nkangala Tournament Curro School 2018
		date 2018-02-24	rnd 5	type Rapid	result 1	date 2018-03-24	rnd 2	type Rapid	result 1
		Opponent Jacobs, D (Dillan)				Opponent Mashego, K (Kgaogelo)

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	Lefefa ,D (Dimpho)	5	2	-85	2	0	-425	3	2	141.7	0	0	0
1	Lefefa ,D (Dimpho)	5	933.6	848.6	2	978.1	508.6	3	849.7	1075.3	0	0	0
2	Mtetwa ,L (Lwazi)	5	1.5	-170	1	0.5	0	4	1	-212.5	0	0	0
2	Mtetwa ,L (Lwazi)	5	951.1	781.1	1	907.3	951.1	4	859	738.6	0	0	0
3	Lutchman ,R (Rishal)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
3	Lutchman ,R (Rishal)	3	982.4	840.7	2	854.7	557.4	1	952.5	1407.4	0	0	0
4	Edeani ,T (Tobenna)	2	1	0	1	0	-425	1	1	425	0	0	0
4	Edeani ,T (Tobenna)	2	769.3	769.3	1	751.8	344.3	1	751.8	1194.3	0	0	0
5	Masemola ,S (Steven)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Masemola ,S (Steven)	1	1190.2	765.2	1	1140.8	765.2	0	0	0	0	0	0
6	Gautier ,N (Nicholas)	1	1	425	1	1	425	0	0	0	0	0	0
6	Gautier ,N (Nicholas)	1	1176	1601	1	1200	1601	0	0	0	0	0	0
7	Gautier ,J (Johnathan)	1	1	425	1	1	425	0	0	0	0	0	0
7	Gautier ,J (Johnathan)	1	1171.9	1596.9	1	1200	1596.9	0	0	0	0	0	0
8	Ackron ,T (Tyler)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Ackron ,T (Tyler)	1	1222.1	797.1	1	1199.2	797.1	0	0	0	0	0	0
9	Mahlelela ,KB (Keletso Bequest)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mahlelela ,KB (Keletso Bequest)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Boshielo ,L (Lesley)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Boshielo ,L (Lesley)	1	1200	775	1	1200	775	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

Mametja, B (Bonolo)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms