Chess South Africa Ratings Database

PLAYER PAGE

Personal

Johnson, Z (Zachary)

Chess SA id

1130317500

FIDE id

Date of birth

2013-02-09 (U14)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1237.6	1232.9	1200	1200
Raw rating	1237.6	1232.9	1200	1200
Weighted rating	1220.6	1218	1200	1200
Weighted performance	0	0	0	0
Floor	737.6	732.9	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	157.2	158.2	165.8	165.8
Highest rating	1237.6 2025-04-01	1232.9 2025-04-01	1200 2025-04-01	1200 2025-04-01
Highest raw rating	1237.6 2025-04-01	1232.9 2025-04-01	1200 2025-04-01	1200 2025-04-01
Highest weighted rating	1213.8 2025-08-01	1212.1 2025-08-01	1200 2025-04-01	1200 2025-04-01
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	1237.6	1232.9	1200	1200
Analysis
Rating	1237.6	1232.9	1200	1200
Raw rating	1237.6	1232.9	1200	1200
Weighted rating	1220.6	1218	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	737.6	732.9	700	700
Max/Min rating change allowed	157.2	158.2	165.8	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	1237.6	1232.9	1200	1200
New weighted rating	1222.6	1219.7	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1237.6	1232.9	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1237.6	1232.9	1200	1200
New K-factor	36	36	36	36
New floor	737.6	732.9	700	700

Item	Main	Standard
	0	0
	6	6
	0	0
	0	0
	0	0
	0	0
History	6	6

Games since
	Main 6	Standard 6		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Cape Town (WCT)
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	1357.9	1357.9
Standard	6	3	50	0	1357.9	1357.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	6	3	50	0	1357.9	1357.9
Standard	6	3	50	0	1357.9	1357.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1237.6	1232.9	1200	1200
2025-09-30	1237.6	1232.9	1200	1200
2025-09-01	1237.6	1232.9	1200	1200
2025-08-01	1237.6	1232.9	1200	1200
2025-07-01	1237.6	1232.9	1200	1200
2025-06-01	1237.6	1232.9	1200	1200
2025-05-01	1237.6	1232.9	1200	1200
2025-04-01	1237.6	1232.9	1200	1200
2025-03-01	1200	1200	1200	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	CT Metro Schools Individual Closed 2025 (U13 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	CT Metro Schools Individual Closed 2025 (U13 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-02	rnd 5	type Standard	result 1	date 2025-03-02	rnd 6	type Standard	result 0.5
		Opponent Tyuthu, I (Iminathi)				Opponent Arendse, V (Virgil)
2	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 1	type Standard	result 0.5	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Van Zyl, F (Frede)				Opponent Chamberlain, E (Eduan)

#	Games	Start				End
1	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-02	rnd 5	type Standard	result 1	date 2025-03-02	rnd 6	type Standard	result 0.5
		Opponent Tyuthu, I (Iminathi)				Opponent Arendse, V (Virgil)
2	2	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 1	type Standard	result 0.5	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Van Zyl, F (Frede)				Opponent Chamberlain, E (Eduan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-02	rnd 5	type Standard	result 1	date 2025-03-02	rnd 5	type Standard	result 1
		Opponent Tyuthu, I (Iminathi)				Opponent Tyuthu, I (Iminathi)
2	1	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Chamberlain, E (Eduan)				Opponent Chamberlain, E (Eduan)

#	Games	Start				End
1	1	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-02	rnd 5	type Standard	result 1	date 2025-03-02	rnd 5	type Standard	result 1
		Opponent Tyuthu, I (Iminathi)				Opponent Tyuthu, I (Iminathi)
2	1	Tournament CT Metro Schools Individual Closed 2025				Tournament CT Metro Schools Individual Closed 2025
		date 2025-03-01	rnd 2	type Standard	result 1	date 2025-03-01	rnd 2	type Standard	result 1
		Opponent Chamberlain, E (Eduan)				Opponent Chamberlain, E (Eduan)

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 Zyl ,F (Frede)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
1	Van Zyl ,F (Frede)	1	1329.9	1329.9	1	1292.9	1329.9	0	0	0	0	0	0
2	Chamberlain ,E (Eduan)	1	1	425	1	1	425	0	0	0	0	0	0
2	Chamberlain ,E (Eduan)	1	1162.7	1587.7	1	1152.2	1587.7	0	0	0	0	0	0
3	Arendse ,V (Virgil)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Arendse ,V (Virgil)	1	1407.5	1407.5	1	1377.3	1407.5	0	0	0	0	0	0
4	Berry ,S (Seth)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Berry ,S (Seth)	1	1393.3	968.3	1	1351.7	968.3	0	0	0	0	0	0
5	De Villiers ,C (Christiaan)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	De Villiers ,C (Christiaan)	1	1529.8	1104.8	1	1425.4	1104.8	0	0	0	0	0	0
6	Tyuthu ,I (Iminathi)	1	1	425	1	1	425	0	0	0	0	0	0
6	Tyuthu ,I (Iminathi)	1	1324	1749	1	1307.4	1749	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

Johnson, Z (Zachary)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms