Chess South Africa Ratings Database

PLAYER PAGE

Personal

Johnston, D (Dean)

Chess SA id

1100147740

FIDE id

Date of birth

2010-11-16 (U16)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-07-31

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1152.8	1153.7	1178	1200
Raw rating	1152.8	1153.7	1178	1200
Weighted rating	1152.6	1153.5	1178	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	177.3	177.1	171.1	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2020-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2020-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1152.8	1153.7	1178	1200
Analysis
Rating	1152.8	1153.7	1178	1200
Raw rating	1152.8	1153.7	1178	1200
Weighted rating	1152.6	1153.5	1178
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	177.3	177.1	171.1	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	1152.8	1153.7	1178	1200
New weighted rating	1152.7	1153.5	1178	1200
New weighted performance	0	0	0	0
Temp new rating	1152.8	1153.7	1178	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1152.8	1153.7	1178	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	7	7	0
	6	0	6
	0	0	0
History	13	7	6

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	13	4.5	34.62	-130.8	1216.7	1085.9
Standard	7	2	28.57	-182.1	1246.5	1064.4
Rapid	6	2.5	41.67	-70.8	1181.9	1111.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1152.8	1153.7	1178	1200
2025-09-01	1152.8	1153.7	1178	1200
2025-08-01	1152.8	1153.7	1178	1200
2025-07-01	1152.8	1153.7	1178	1200
2025-06-01	1152.8	1153.7	1178	1200
2025-05-01	1152.8	1153.7	1178	1200
2025-04-01	1152.8	1153.7	1178	1200
2025-03-01	1152.8	1153.7	1178	1200
2025-02-01	1152.8	1153.7	1178	1200
2025-01-01	1152.4	1153.2	1178	1200
2024-12-01	1152.4	1153.2	1178	1200
2024-11-01	1152.4	1153.2	1178	1200
2024-10-01	1152.4	1153.2	1178	1200
2024-09-01	1152.4	1153.2	1178	1200
2024-08-01	1152.4	1153.2	1178	1200
2024-07-01	1152.4	1153.2	1178	1200
2024-06-01	1152.4	1153.2	1178	1200
2024-08-01	1152.4	1153.2	1178	1200
2024-04-01	1152.4	1153.2	1178	1200
2024-03-01	1152.4	1153.2	1178	1200
2024-02-01	1152.4	1153.2	1178	1200
2024-01-01	1152.4	1153.2	1178	1200
2023-12-01	1152.4	1153.2	1178	1200
2023-11-01	1152.4	1153.2	1178	1200

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	Bellville Club Championship 2023	2023-04-17	2023-07-31	Standard	Cape Town (WCT)	7	1	0	Yes	Analysis
2	North District School Trials 2023 (U13 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
3	Kenridge Rapid 2022 (U14)	2022-11-05	2022-11-05	Rapid	Cape Town (WCT)	6	6	2.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 3	type Standard	result 0.5	date 2023-02-04	rnd 4	type Standard	result 1
		Opponent Wilschut, M (Marcelino)				Opponent Blankenberg, V (Verntaygon)
2	2	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 3	type Rapid	result 1	date 2022-11-05	rnd 4	type Rapid	result 0.5
		Opponent Boesak, N (Neo)				Opponent Pillay, D (Desan)
3	1	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 6	type Standard	result 0.5	date 2023-02-04	rnd 6	type Standard	result 0.5
		Opponent Dundee, J (Jonathan)				Opponent Dundee, J (Jonathan)

#	Games	Start				End
1	2	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 3	type Standard	result 0.5	date 2023-02-04	rnd 4	type Standard	result 1
		Opponent Wilschut, M (Marcelino)				Opponent Blankenberg, V (Verntaygon)
2	1	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 6	type Standard	result 0.5	date 2023-02-04	rnd 6	type Standard	result 0.5
		Opponent Dundee, J (Jonathan)				Opponent Dundee, J (Jonathan)

#	Games	Start				End
1	2	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 3	type Rapid	result 1	date 2022-11-05	rnd 4	type Rapid	result 0.5
		Opponent Boesak, N (Neo)				Opponent Pillay, D (Desan)
2	1	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 6	type Rapid	result 1	date 2022-11-05	rnd 6	type Rapid	result 1
		Opponent Janse Van Rensburg, W (Wian)				Opponent Janse Van Rensburg, W (Wian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-02-04	rnd 4	type Standard	result 1
		Opponent Blankenberg, V (Verntaygon)				Opponent Blankenberg, V (Verntaygon)
2	1	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 6	type Rapid	result 1	date 2022-11-05	rnd 6	type Rapid	result 1
		Opponent Janse Van Rensburg, W (Wian)				Opponent Janse Van Rensburg, W (Wian)
3	1	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 3	type Rapid	result 1	date 2022-11-05	rnd 3	type Rapid	result 1
		Opponent Boesak, N (Neo)				Opponent Boesak, N (Neo)

#	Games	Start				End
1	1	Tournament North District School Trials 2023				Tournament North District School Trials 2023
		date 2023-02-04	rnd 4	type Standard	result 1	date 2023-02-04	rnd 4	type Standard	result 1
		Opponent Blankenberg, V (Verntaygon)				Opponent Blankenberg, V (Verntaygon)

#	Games	Start				End
1	1	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 6	type Rapid	result 1	date 2022-11-05	rnd 6	type Rapid	result 1
		Opponent Janse Van Rensburg, W (Wian)				Opponent Janse Van Rensburg, W (Wian)
2	1	Tournament Kenridge Rapid 2022				Tournament Kenridge Rapid 2022
		date 2022-11-05	rnd 3	type Rapid	result 1	date 2022-11-05	rnd 3	type Rapid	result 1
		Opponent Boesak, N (Neo)				Opponent Boesak, N (Neo)

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	Osborne ,H (Hannah)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Osborne ,H (Hannah)	1	1317.9	892.9	1	1315.8	892.9	0	0	0	0	0	0
2	Beukes ,T (Thurston)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Beukes ,T (Thurston)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Muller ,H (Helgard)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Muller ,H (Helgard)	1	1447.2	1022.2	1	1389	1022.2	0	0	0	0	0	0
4	Du Raan ,C (Cobus)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Du Raan ,C (Cobus)	1	1283.6	858.6	1	1289.2	858.6	0	0	0	0	0	0
5	Blankenberg ,V (Verntaygon)	1	1	425	1	1	425	0	0	0	0	0	0
5	Blankenberg ,V (Verntaygon)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Dundee ,J (Jonathan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Dundee ,J (Jonathan)	1	1077	1077	1	1096	1077	0	0	0	0	0	0
7	Wilschut ,M (Marcelino)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Wilschut ,M (Marcelino)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
8	Boesak ,N (Neo)	1	1	425	0	0	0	1	1	425	0	0	0
8	Boesak ,N (Neo)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
9	Mudenda ,D (Daniel)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Mudenda ,D (Daniel)	1	1163.5	738.5	0	0	0	1	1205.2	738.5	0	0	0
10	Janse Van Rensburg ,W (Wian)	1	1	425	0	0	0	1	1	425	0	0	0
10	Janse Van Rensburg ,W (Wian)	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

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PLAYER PAGE

Personal

Johnston, D (Dean)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms