Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bertholdt, B (Bjorn)

Chess SA id

107076705

FIDE id

Date of birth

2007-02-08 (U20)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2018-03-10

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	719.4	711.9	741	741
Raw rating	719.4	711.9	741	741
Weighted rating	719.3	711.8	741	741
Weighted performance	0	0	0	0
Floor	500	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	328.8	332.4	318.9	318.9
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	741 2018-02-01	741 2018-02-01	741 2024-02-01	741 2024-02-01
Highest weighted rating	741 2024-11-01	741 2024-11-01	741 2024-11-01	741 2024-11-01
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	0	0	0
New rating	719.4	711.9	741	741
Analysis
Rating	719.4	711.9	741	741
Raw rating	719.4	711.9	741	741
Weighted rating	719.3	711.8	741
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	500	500	500	500
Max/Min rating change allowed	328.8	332.4	318.9	318.9
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	719.4	711.9	741	741
New weighted rating	719.4	711.8	741	741
New weighted performance	0	0	0	0
Temp new rating	719.4	711.9	741	741
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	719.4	711.9	741	741
New K-factor	40	40	40	40
New floor	500	500	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	48	48

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	5	1	20	-255	827.6	572.6
Standard	5	1	20	-255	827.6	572.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	719.4	711.9	741	741
2025-09-01	719.4	711.9	741	741
2025-08-01	719.4	711.9	741	741
2025-07-01	719.4	711.9	741	741
2025-06-01	719.4	711.9	741	741
2025-05-01	719.4	711.9	741	741
2025-04-01	719.4	711.9	741	741
2025-03-01	719.4	711.9	741	741
2025-02-01	719.4	711.9	741	741
2025-01-01	719.4	711.9	741	741
2024-12-01	719.4	711.9	741	741
2024-11-01	719.4	711.9	741	741
2024-10-01	719.4	711.9	741	741
2024-09-01	719.4	711.9	741	741
2024-08-01	719.4	711.9	741	741
2024-07-01	719.4	711.9	741	741
2024-06-01	719.4	711.9	741	741
2024-08-01	719.4	711.9	741	741
2024-04-01	719.4	711.9	741	741
2024-03-01	719.4	711.9	741	741
2024-02-01	719.4	711.9	741	741
2024-01-01	719.4	711.9	741	741
2023-12-01	709.1	704.2	741	741
2023-11-01	709.1	704.2	741	741

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	JNW Club - Northriding College Open 2018 (B)	2018-03-09	2018-03-10	Standard	Johannesburg Metro (GJM)	6	5	1	Yes	Analysis

#	Games	Start				End
1	1	Tournament JNW Club - Northriding College Open 2018				Tournament JNW Club - Northriding College Open 2018
		date 2018-03-10	rnd 6	type Standard	result 1	date 2018-03-10	rnd 6	type Standard	result 1
		Opponent Botha, M (Marcus)				Opponent Botha, M (Marcus)

#	Games	Start				End
1	1	Tournament JNW Club - Northriding College Open 2018				Tournament JNW Club - Northriding College Open 2018
		date 2018-03-10	rnd 6	type Standard	result 1	date 2018-03-10	rnd 6	type Standard	result 1
		Opponent Botha, M (Marcus)				Opponent Botha, M (Marcus)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament JNW Club - Northriding College Open 2018				Tournament JNW Club - Northriding College Open 2018
		date 2018-03-10	rnd 6	type Standard	result 1	date 2018-03-10	rnd 6	type Standard	result 1
		Opponent Botha, M (Marcus)				Opponent Botha, M (Marcus)

#	Games	Start				End
1	1	Tournament JNW Club - Northriding College Open 2018				Tournament JNW Club - Northriding College Open 2018
		date 2018-03-10	rnd 6	type Standard	result 1	date 2018-03-10	rnd 6	type Standard	result 1
		Opponent Botha, M (Marcus)				Opponent Botha, M (Marcus)

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	Van Stryp ,O (Ockert)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Van Stryp ,O (Ockert)	1	800.1	375.1	1	844.8	375.1	0	0	0	0	0	0
2	Flockhart ,E (Elijah)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Flockhart ,E (Elijah)	1	1080.7	655.7	1	1061.6	655.7	0	0	0	0	0	0
3	Botha ,M (Marcus)	1	1	425	1	1	425	0	0	0	0	0	0
3	Botha ,M (Marcus)	1	500	925	1	500	925	0	0	0	0	0	0
4	Paraian ,N (Nicolai)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Paraian ,N (Nicolai)	1	820.6	395.6	1	831	395.6	0	0	0	0	0	0
5	Van Jaarsveld ,H (Heinu)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Van Jaarsveld ,H (Heinu)	1	936.5	511.5	1	930.8	511.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

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PLAYER PAGE

Personal

Bertholdt, B (Bjorn)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms