Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bonthuyzen, MA (Michael Arnoldus)

Chess SA id

102002534

FIDE id

Date of birth

2002-05-20 (Adult)

Gender

Male

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-01-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1129.3	1124.7	1085	1085
Raw rating	1129.3	1124.7	1085	1085
Weighted rating	1129.3	1124.7	1085	1085
Weighted performance	260.6	259.5	0	0
Floor	695.9	692.7	585	585
K-factor	40	40	40	40
Min/Max rating change allowed	183.4	184.6	195.3	195.3
Highest rating	1208.4 2019-06-01	1205.2 2019-06-01	1200 2024-03-01	1200 2024-03-01
Highest raw rating	1195.9 2019-12-01	1192.7 2019-12-01	1085 2024-03-01	1085 2024-03-01
Highest weighted rating	1195.9 2024-11-01	1192.7 2024-11-01	1085 2024-11-01	1085 2024-11-01
Highest weighted performance	1208.4 2019-06-01	1205.2 2019-06-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1129.3	1124.7	1085	1085
Analysis
Rating	1129.3	1124.7	1085	1085
Raw rating	1129.3	1124.7	1085	1085
Weighted rating	1129.3	1124.7	1085
Weighted performance	260.6	259.5	0
K-factor	40	40	40	40
Floor	695.9	692.7	585	585
Max/Min rating change allowed	183.4	184.6	195.3	195.3
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	1129.3	1124.7	1085	1085
New weighted rating	1129.3	1124.7	1085	1085
New weighted performance	259.4	258.3	0	0
Temp new rating	1129.3	1124.7	1085	1085
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1129.3	1124.7	1085	1085
New K-factor	40	40	40	40
New floor	695.9	692.7	585	585

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	301	296	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Mangaung (FMB)
Province	Free State (FS)
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	63	32	50.79	6.7	1079.4	1086.1
Standard	63	32	50.79	6.7	1079.4	1086.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1129.3	1124.7	1085	1085
2025-09-01	1129.3	1124.7	1085	1085
2025-08-01	1129.3	1124.7	1085	1085
2025-07-01	1129.3	1124.7	1085	1085
2025-06-01	1129.3	1124.7	1085	1085
2025-05-01	1129.3	1124.7	1085	1085
2025-04-01	1129.3	1124.7	1085	1085
2025-03-01	1129.3	1124.7	1085	1085
2025-02-01	1129.3	1124.7	1085	1085
2025-01-01	1129.3	1124.7	1085	1085
2024-12-01	1129.3	1124.7	1085	1085
2024-11-01	1129.3	1124.7	1085	1085
2024-10-01	1129.3	1124.7	1085	1085
2024-09-01	1129.3	1124.7	1085	1085
2024-08-01	1129.3	1124.7	1085	1085
2024-07-01	1129.3	1124.7	1085	1085
2024-06-01	1129.3	1124.7	1085	1085
2024-08-01	1129.3	1124.7	1085	1085
2024-04-01	1129.3	1124.7	1085	1085
2024-03-01	1129.3	1124.7	1085	1085
2024-02-01	1129.3	1124.7	1085	1085
2024-01-01	1129.3	1124.7	1085	1085
2023-12-01	1129.3	1124.7	1085	1085
2023-11-01	1129.3	1124.7	1085	1085

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	2019 South African Junior Team Championships (U18C)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	6	0.5	Yes	Analysis
2	Lejweleputswa 7th Qualifying Swiss Open Tournament 2019 (Open)	2019-06-15	2019-06-15	Standard	Lejweleputswa (FLW)	5	5	4	Yes	Analysis
3	Inter Regional Chess Championship 2019 (U18)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
4	Lejweleputswa 4th Qualifying Swiss Open Tournament 2019 (B)	2019-03-16	2019-03-16	Standard	Lejweleputswa (FLW)	5	3	0.5	Yes	Analysis
5	Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019 (B)	2019-01-26	2019-01-26	Standard	Lejweleputswa (FLW)	5	5	4	Yes	Analysis
6	South African Junior Team Championships 2018 (U18C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	3	Yes	Analysis
7	Lejweleputswa 1st Qualifier 2019 (U18)	2018-10-27	2018-10-27	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
8	Lejweleputswa 7th Qualifying Swiss Open Tournament 2018 (Open)	2018-06-23	2018-06-23	Standard	Lejweleputswa (FLW)	5	5	2.5	Yes	Analysis
9	Inter Regional 2018 (U18 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
10	Lejweleputswa 5th Qualifying Swiss Open Tournament 2018 (Open)	2018-04-21	2018-04-21	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
11	Lejweleputswa 2nd Qualifying Swiss Open Tournament 2018 (C)	2018-01-27	2018-01-27	Standard	Lejweleputswa (FLW)	5	5	4.5	Yes	Analysis
12	South African Junior Team Championships 2017 (U16C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	3.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament South African Junior Team Championships 2017				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-01-27	rnd 5	type Standard	result 0.5
		Opponent Tumane, T (Thabiso)				Opponent Choane, OOP (Omphile)
2	4	Tournament Inter Regional Chess Championship 2019				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-06-15	rnd 2	type Standard	result 1
		Opponent Matlou, O (Otsile)				Opponent Hendricks, UO (Uziel)
3	4	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-01-26	rnd 5	type Standard	result 1
		Opponent Muteba, J (Johnathan)				Opponent Mochaki, K (Keoratile)

#	Games	Start				End
1	6	Tournament South African Junior Team Championships 2017				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-01-27	rnd 5	type Standard	result 0.5
		Opponent Tumane, T (Thabiso)				Opponent Choane, OOP (Omphile)
2	4	Tournament Inter Regional Chess Championship 2019				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-06-15	rnd 2	type Standard	result 1
		Opponent Matlou, O (Otsile)				Opponent Hendricks, UO (Uziel)
3	4	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-01-26	rnd 5	type Standard	result 1
		Opponent Muteba, J (Johnathan)				Opponent Mochaki, K (Keoratile)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament South African Junior Team Championships 2017				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-01-27	rnd 4	type Standard	result 1
		Opponent Tumane, T (Thabiso)				Opponent Mansill, R (Regan)
2	4	Tournament Inter Regional Chess Championship 2019				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-06-15	rnd 2	type Standard	result 1
		Opponent Matlou, O (Otsile)				Opponent Hendricks, UO (Uziel)
3	4	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-01-26	rnd 5	type Standard	result 1
		Opponent Muteba, J (Johnathan)				Opponent Mochaki, K (Keoratile)

#	Games	Start				End
1	5	Tournament South African Junior Team Championships 2017				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-01-27	rnd 4	type Standard	result 1
		Opponent Tumane, T (Thabiso)				Opponent Mansill, R (Regan)
2	4	Tournament Inter Regional Chess Championship 2019				Tournament Lejweleputswa 7th Qualifying Swiss Open Tournament 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-06-15	rnd 2	type Standard	result 1
		Opponent Matlou, O (Otsile)				Opponent Hendricks, UO (Uziel)
3	4	Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019				Tournament Lejweleputswa 2nd Qualifying Swiss Open Tournament 2019
		date 2019-01-26	rnd 2	type Standard	result 1	date 2019-01-26	rnd 5	type Standard	result 1
		Opponent Muteba, J (Johnathan)				Opponent Mochaki, K (Keoratile)

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	Malan ,MJ (Mathys Johannes)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Malan ,MJ (Mathys Johannes)	3	1137.6	712.6	3	1137.3	712.6	0	0	0	0	0	0
2	Choane ,OOP (Omphile Omphemetse Phalali)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Choane ,OOP (Omphile Omphemetse Phalali)	3	943.8	1085.4	3	943.6	1085.4	0	0	0	0	0	0
3	Schonken ,JA (Johannes Albertus)	2	2	425	2	2	425	0	0	0	0	0	0
3	Schonken ,JA (Johannes Albertus)	2	972.9	1397.9	2	963.6	1397.9	0	0	0	0	0	0
4	Young ,RB (Ruhan Beyers)	1	1	425	1	1	425	0	0	0	0	0	0
4	Young ,RB (Ruhan Beyers)	1	851.6	1276.6	1	851.6	1276.6	0	0	0	0	0	0
5	Abdul Martin ,RIM (Rijvi)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Abdul Martin ,RIM (Rijvi)	1	1268.9	843.9	1	1281.1	843.9	0	0	0	0	0	0
6	Maboya ,R (Refiloe)	1	1	425	1	1	425	0	0	0	0	0	0
6	Maboya ,R (Refiloe)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Oberholzer ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Oberholzer ,E (Ethan)	1	1255.1	830.1	1	1244.2	830.1	0	0	0	0	0	0
8	Sisa ,E (Eddy)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Sisa ,E (Eddy)	1	1533.4	1108.4	1	1543.4	1108.4	0	0	0	0	0	0
9	Mokhoera ,KB (Keamogecoe Boitumelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Mokhoera ,KB (Keamogecoe Boitumelo)	1	1360.3	935.3	1	1358.5	935.3	0	0	0	0	0	0
10	Wilson ,C (Caden)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Wilson ,C (Caden)	1	1461.5	1036.5	1	1439.3	1036.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Bonthuyzen, MA (Michael Arnoldus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms