Chess South Africa Ratings Database

PLAYER PAGE

Personal

Roos, D (Dehan)

Chess SA id

107089547

FIDE id

Date of birth

2007-01-01 (U20)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1180.1	1136.1	955.4	632.2
Raw rating	1180.1	1136.1	955.4	632.2
Weighted rating	1180.1	1136.1	955.4	632.2
Weighted performance	326.8	287.6	0	0
Floor	680.1	640.1	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	170.6	181.6	234.9	372.4
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01
Highest raw rating	1180.1 2024-02-01	1140.1 2020-02-01	955.4 2024-02-01	632.2 2024-02-01
Highest weighted rating	1180.1 2024-11-01	1140.1 2024-11-01	955.4 2024-11-01	632.2 2024-11-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1180.1	1136.1	955.4	632.2
Analysis
Rating	1180.1	1136.1	955.4	632.2
Raw rating	1180.1	1136.1	955.4	632.2
Weighted rating	1180.1	1136.1	955.4
Weighted performance	326.8	287.6	0
K-factor	40	40	40	40
Floor	680.1	640.1	500	500
Max/Min rating change allowed	170.6	181.6	234.9	372.4
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	1180.1	1136.1	955.4	632.2
New weighted rating	1180.1	1136.1	955.4	632.2
New weighted performance	326.4	287.2	0	0
Temp new rating	1180.1	1136.1	955.4	632.2
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1180.1	1136.1	955.4	632.2
New K-factor	40	40	40	40
New floor	680.1	640.1	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	97	75	22

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
Province	Western Cape (WC)
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	78	38	48.72	-10.9	1088.4	1077.5
Standard	56	27	48.21	-15.2	1091.8	1076.6
Rapid	22	11	50	0	1079.8	1079.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1180.1	1136.1	955.4	632.2
2025-09-01	1180.1	1136.1	955.4	632.2
2025-08-01	1180.1	1136.1	955.4	632.2
2025-07-01	1180.1	1136.1	955.4	632.2
2025-06-01	1180.1	1136.1	955.4	632.2
2025-05-01	1180.1	1136.1	955.4	632.2
2025-04-01	1180.1	1136.1	955.4	632.2
2025-03-01	1180.1	1136.1	955.4	632.2
2025-02-01	1180.1	1136.1	955.4	632.2
2025-01-01	1180.1	1136.1	955.4	632.2
2024-12-01	1180.1	1136.1	955.4	632.2
2024-11-01	1180.1	1136.1	955.4	632.2
2024-10-01	1180.1	1136.1	955.4	632.2
2024-09-01	1180.1	1136.1	955.4	632.2
2024-08-01	1180.1	1136.1	955.4	632.2
2024-07-01	1180.1	1136.1	955.4	632.2
2024-06-01	1180.1	1136.1	955.4	632.2
2024-08-01	1180.1	1136.1	955.4	632.2
2024-04-01	1180.1	1136.1	955.4	632.2
2024-03-01	1180.1	1136.1	955.4	632.2
2024-02-01	1180.1	1136.1	955.4	632.2
2024-01-01	1180.1	1136.1	955.4	632.2
2023-12-01	1180.1	1136.1	955.4	632.2
2023-11-01	1180.1	1136.1	955.4	632.2

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	OCF Chess Tournament 2 2020 (U14)	2020-02-01	2020-02-01	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
2	Cape Winelands Schools Trials 1 2020 (U13 Boys)	2020-02-08	2020-02-08	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
3	2019 South African Junior Team Championships (U14E)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
4	Stellenberg Youth Chess Championship 2019 (B)	2019-04-30	2019-05-01	Standard	Cape Town (WCT)	6	6	1.5	Yes	Analysis
5	Steinitz Chess Festival 2019 (C)	2019-04-05	2019-04-07	Standard	Cape Town (WCT)	6	3	2	Yes	Analysis
6	Cape Winelands Open 2019 (B)	2019-04-27	2019-04-27	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
7	Cape Winelands Schools Closed 2019 (U13 Boys)	2019-03-16	2019-03-17	Standard	Cape Winelands (WCW)	7	7	3	Yes	Analysis
8	CW Schools Open 2019 (U13 Boys)	2019-02-02	2019-02-02	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
9	Western Cape Top Schools 2018 (U11 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	4	3	Yes	Analysis
10	Cape Winelands Schools Chess - Top Schools 2018 (U9+U11 Mix)	2018-07-28	2018-07-28	Rapid	Cape Winelands (WCW)	5	4	2	Yes	Analysis
11	Stellenberg Youth Chess Champs 2018 (C)	2018-06-22	2018-06-23	Standard	Cape Town (WCT)	6	6	1	Yes	Analysis
12	Crossroads Open Chess Championship 2018 (C)	2018-04-27	2018-04-29	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
13	Cape Winelands Schools Trials 1 2018 (U11 Boys)	2018-03-03	2018-03-03	Rapid	Cape Winelands (WCW)	6	6	2	Yes	Analysis
14	Cape Winelands Schools Prestige 2018 (U11 Boys)	2018-03-24	2018-03-25	Standard	Cape Winelands (WCW)	7	7	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-06	rnd 4	type Standard	result 1
		Opponent Voorby, O (Oarabile)				Opponent Swartz, C (Camran)
2	4	Tournament Western Cape Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-08-25	rnd 3	type Standard	result 1	date 2019-02-02	rnd 1	type Rapid	result 1
		Opponent Du Plessis, S (Stefan)				Opponent Kirchner, K (Keenan)
3	3	Tournament Crossroads Open Chess Championship 2018				Tournament Crossroads Open Chess Championship 2018
		date 2018-04-28	rnd 3	type Standard	result 1	date 2018-04-29	rnd 5	type Standard	result 1
		Opponent Sololo, C (Chumani)				Opponent Perkins, R (Ryan)

#	Games	Start				End
1	4	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-06	rnd 4	type Standard	result 1
		Opponent Voorby, O (Oarabile)				Opponent Swartz, C (Camran)
2	3	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 3	type Standard	result 1	date 2018-08-26	rnd 5	type Standard	result 1
		Opponent Du Plessis, S (Stefan)				Opponent Pretorius, I (Ieuan)
3	3	Tournament Crossroads Open Chess Championship 2018				Tournament Crossroads Open Chess Championship 2018
		date 2018-04-28	rnd 3	type Standard	result 1	date 2018-04-29	rnd 5	type Standard	result 1
		Opponent Sololo, C (Chumani)				Opponent Perkins, R (Ryan)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-08	rnd 5	type Rapid	result 1	date 2020-02-08	rnd 6	type Rapid	result 1
		Opponent Dampies, C (Chriss-Lynn)				Opponent Saul, D (Daniel)
2	2	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-08	rnd 2	type Rapid	result 1	date 2020-02-08	rnd 3	type Rapid	result 1
		Opponent Payne, D (Daniel)				Opponent Boonzaaier, L (Logan)
3	2	Tournament Cape Winelands Schools Chess - Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-07-28	rnd 5	type Rapid	result 1	date 2019-02-02	rnd 1	type Rapid	result 1
		Opponent Ndyundyu, K (Khanya)				Opponent Kirchner, K (Keenan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-06	rnd 4	type Standard	result 1
		Opponent Voorby, O (Oarabile)				Opponent Swartz, C (Camran)
2	4	Tournament Western Cape Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-08-25	rnd 3	type Standard	result 1	date 2019-02-02	rnd 1	type Rapid	result 1
		Opponent Du Plessis, S (Stefan)				Opponent Kirchner, K (Keenan)
3	3	Tournament Crossroads Open Chess Championship 2018				Tournament Crossroads Open Chess Championship 2018
		date 2018-04-28	rnd 3	type Standard	result 1	date 2018-04-29	rnd 5	type Standard	result 1
		Opponent Sololo, C (Chumani)				Opponent Perkins, R (Ryan)

#	Games	Start				End
1	4	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 1	type Standard	result 1	date 2020-01-06	rnd 4	type Standard	result 1
		Opponent Voorby, O (Oarabile)				Opponent Swartz, C (Camran)
2	3	Tournament Western Cape Top Schools 2018				Tournament Western Cape Top Schools 2018
		date 2018-08-25	rnd 3	type Standard	result 1	date 2018-08-26	rnd 5	type Standard	result 1
		Opponent Du Plessis, S (Stefan)				Opponent Pretorius, I (Ieuan)
3	3	Tournament Crossroads Open Chess Championship 2018				Tournament Crossroads Open Chess Championship 2018
		date 2018-04-28	rnd 3	type Standard	result 1	date 2018-04-29	rnd 5	type Standard	result 1
		Opponent Sololo, C (Chumani)				Opponent Perkins, R (Ryan)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-08	rnd 5	type Rapid	result 1	date 2020-02-08	rnd 6	type Rapid	result 1
		Opponent Dampies, C (Chriss-Lynn)				Opponent Saul, D (Daniel)
2	2	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-08	rnd 2	type Rapid	result 1	date 2020-02-08	rnd 3	type Rapid	result 1
		Opponent Payne, D (Daniel)				Opponent Boonzaaier, L (Logan)
3	2	Tournament Cape Winelands Schools Chess - Top Schools 2018				Tournament CW Schools Open 2019
		date 2018-07-28	rnd 5	type Rapid	result 1	date 2019-02-02	rnd 1	type Rapid	result 1
		Opponent Ndyundyu, K (Khanya)				Opponent Kirchner, K (Keenan)

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	Kirchner ,K (Keenan)	2	1	0	1	0	-425	1	1	425	0	0	0
1	Kirchner ,K (Keenan)	2	1183.9	1183.9	1	1200	758.9	1	1200	1608.9	0	0	0
2	Titus ,L (Lucien)	2	2	425	1	1	425	1	1	425	0	0	0
2	Titus ,L (Lucien)	2	1154.6	1579.6	1	1200	1579.6	1	1122.4	1579.6	0	0	0
3	Smith ,M (Matthew)	1	1	425	1	1	425	0	0	0	0	0	0
3	Smith ,M (Matthew)	1	1160.6	1585.6	1	1200	1585.6	0	0	0	0	0	0
4	Gabriels ,J (Jawon)	1	1	425	1	1	425	0	0	0	0	0	0
4	Gabriels ,J (Jawon)	1	1173.8	1598.8	1	1145.8	1598.8	0	0	0	0	0	0
5	Sololo ,C (Chumani)	1	1	425	1	1	425	0	0	0	0	0	0
5	Sololo ,C (Chumani)	1	1132.4	1557.4	1	1136.1	1557.4	0	0	0	0	0	0
6	Rosada ,EE (Earvin Emery)	1	1	425	1	1	425	0	0	0	0	0	0
6	Rosada ,EE (Earvin Emery)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Goosen ,J (Johannes)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Goosen ,J (Johannes)	1	1045.5	620.5	1	1078.4	620.5	0	0	0	0	0	0
8	Dlamini ,N (Njabulo)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Dlamini ,N (Njabulo)	1	1194.4	769.4	1	1190.4	769.4	0	0	0	0	0	0
9	Pekeur ,A (Aiden)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Pekeur ,A (Aiden)	1	1188.6	763.6	1	1210	763.6	0	0	0	0	0	0
10	Buys ,R (Reynard)	1	1	425	1	1	425	0	0	0	0	0	0
10	Buys ,R (Reynard)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Roos, D (Dehan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms