Chess South Africa Ratings Database

PLAYER PAGE

Personal

Isaac, J (Joshua)

Chess SA id

1130316599

FIDE id

Date of birth

2013-07-22 (U14)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1201.3	1199.9	1227.2	1200
Raw rating	1201.2	1199.9	1227.2	1200
Weighted rating	1201.3	1199.9	1216.3	1200
Weighted performance	0	0	0	0
Floor	712.7	700	727.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	165.5	165.8	159.5	165.8
Highest rating	1212.7 2025-03-01	1200 2025-03-01	1227.2 2025-03-01	1200 2025-03-01
Highest raw rating	1212.7 2025-03-01	1200 2025-03-01	1227.2 2025-03-01	1200 2025-03-01
Highest weighted rating	1212.7 2025-03-01	1200 2025-03-01	1211.7 2025-08-01	1200 2025-03-01
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1201.3	1199.9	1227.2	1200
Analysis
Rating	1201.3	1199.9	1227.2	1200
Raw rating	1201.2	1199.9	1227.2	1200
Weighted rating	1201.3	1199.9	1216.3
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	712.7	700	727.2	700
Max/Min rating change allowed	165.5	165.8	159.5	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	1201.2	1199.9	1227.2	1200
New weighted rating	1201.3	1199.9	1217.7	1200
New weighted performance	0	0	0	0
Temp new rating	1201.3	1199.9	1227.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1201.3	1199.9	1227.2	1200
New K-factor	36	36	36	36
New floor	712.7	700	727.2	700

Item	Main	Standard	Rapid
	0	0	0
	6	1	5
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	6	1	5

Games since
	Main 6	Standard 1		Rapid 5		Blitz 0
Gender	Male
Age group	U14
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	6	3	50	0	1216.2	1216.2
Standard	1	0	0	-425	1238.2	813.2
Rapid	5	3	60	85	1211.8	1296.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	6	3	50	0	1216.2	1216.2
Standard	1	0	0	-425	1238.2	813.2
Rapid	5	3	60	85	1211.8	1296.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1201.2	1199.9	1227.2	1200
2025-09-30	1201.2	1199.9	1227.2	1200
2025-09-01	1201.2	1199.9	1227.2	1200
2025-08-01	1201.2	1199.9	1227.2	1200
2025-07-01	1201.2	1199.9	1227.2	1200
2025-06-01	1201.1	1199.9	1227.2	1200
2025-05-01	1201.1	1199.8	1227.2	1200
2025-04-01	1201	1198.8	1227.2	1200
2025-03-01	1212.7	1200	1227.2	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	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	West Coast Schools Chess Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	1	0	Yes	Analysis
2	Lower West Coast Prestige 2025 (U13 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	West Coast Schools Chess Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	1	0	Yes	Analysis
2	Lower West Coast Prestige 2025 (U13 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament Lower West Coast Prestige 2025				Tournament Lower West Coast Prestige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Velem, O (Okuhle)				Opponent Swarts, N (Neyo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Lower West Coast Prestige 2025				Tournament Lower West Coast Prestige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Velem, O (Okuhle)				Opponent Swarts, N (Neyo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Lower West Coast Prestige 2025				Tournament Lower West Coast Prestige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Velem, O (Okuhle)				Opponent Swarts, N (Neyo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Lower West Coast Prestige 2025				Tournament Lower West Coast Prestige 2025
		date 2025-02-22	rnd 3	type Rapid	result 1	date 2025-02-22	rnd 5	type Rapid	result 1
		Opponent Velem, O (Okuhle)				Opponent Swarts, N (Neyo)

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	Erasmus ,H (Heinrich)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Erasmus ,H (Heinrich)	1	1238.2	813.2	1	1228.4	813.2	0	0	0	0	0	0
2	Love ,T (Tayrique)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Love ,T (Tayrique)	1	1287.8	862.8	0	0	0	1	1389.7	862.8	0	0	0
3	Swarts ,N (Neyo)	1	1	425	0	0	0	1	1	425	0	0	0
3	Swarts ,N (Neyo)	1	1171.3	1596.3	0	0	0	1	1200	1596.3	0	0	0
4	Abrahams ,J (Janovan)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Abrahams ,J (Janovan)	1	1200	775	0	0	0	1	1200	775	0	0	0
5	Velem ,O (Okuhle)	1	1	425	0	0	0	1	1	425	0	0	0
5	Velem ,O (Okuhle)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
6	Qwabaza ,I (Iminahti)	1	1	425	0	0	0	1	1	425	0	0	0
6	Qwabaza ,I (Iminahti)	1	1200	1625	0	0	0	1	1200	1625	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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Statistics

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PLAYER PAGE

Personal

Isaac, J (Joshua)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms