Chess South Africa Ratings Database

PLAYER PAGE

Personal

Roos, J (Josua)

Chess SA id

105078453

FIDE id

Date of birth

2005-02-06 (Adult)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1005.5	741.7	731.4	777
Raw rating	1005.5	741.7	731.4	777
Weighted rating	1005.5	741.4	731.4	777
Weighted performance	303	0	0	0
Floor	505.5	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	218.8	318.6	323.3	302.9
Highest rating	1375.7 2019-08-01	1663.3 2019-08-01	1260.6 2019-07-01	1200 2018-02-01
Highest raw rating	1005.5 2024-02-01	741.7 2024-02-01	731.4 2024-02-01	777 2024-02-01
Highest weighted rating	1005.5 2024-11-01	741.7 2024-11-01	731.4 2024-11-01	777 2024-11-01
Highest weighted performance	1375.7 2019-08-01	1663.3 2019-08-01	1260.6 2019-07-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1005.5	741.7	731.4	777
Analysis
Rating	1005.5	741.7	731.4	777
Raw rating	1005.5	741.7	731.4	777
Weighted rating	1005.5	741.4	731.4
Weighted performance	303	0	0
K-factor	40	40	40	40
Floor	505.5	500	500	500
Max/Min rating change allowed	218.8	318.6	323.3	302.9
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	1005.5	741.7	731.4	777
New weighted rating	1005.5	741.6	731.4	777
New weighted performance	302.6	0	0	0
Temp new rating	1005.5	741.7	731.4	777
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1005.5	741.7	731.4	777
New K-factor	40	40	40	40
New floor	505.5	500	500	500

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	49	17	14	18

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	39	18.5	47.44	-21.8	1212.3	1190.5
Standard	7	5	71.43	182.1	1180.8	1363
Rapid	14	5.5	39.29	-91.1	1228.5	1137.4
Blitz	18	8	44.44	-47.2	1212.1	1164.8

Date	Main	Standard	Rapid	Blitz
2025-09-30	1005.5	741.7	731.4	777
2025-09-01	1005.5	741.7	731.4	777
2025-08-01	1005.5	741.7	731.4	777
2025-07-01	1005.5	741.7	731.4	777
2025-06-01	1005.5	741.7	731.4	777
2025-05-01	1005.5	741.7	731.4	777
2025-04-01	1005.5	741.7	731.4	777
2025-03-01	1005.5	741.7	731.4	777
2025-02-01	1005.5	741.7	731.4	777
2025-01-01	1005.5	741.7	731.4	777
2024-12-01	1005.5	741.7	731.4	777
2024-11-01	1005.5	741.7	731.4	777
2024-10-01	1005.5	741.7	731.4	777
2024-09-01	1005.5	741.7	731.4	777
2024-08-01	1005.5	741.7	731.4	777
2024-07-01	1005.5	741.7	731.4	777
2024-06-01	1005.5	741.7	731.4	777
2024-08-01	1005.5	741.7	731.4	777
2024-04-01	1005.5	741.7	731.4	777
2024-03-01	1005.5	741.7	731.4	777
2024-02-01	1005.5	741.7	731.4	777
2024-01-01	1005.5	741.7	731.4	777
2023-12-01	1005.5	711.8	731.4	777
2023-11-01	1005.5	711.8	731.4	777

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	Paul Roos Blitz 2020	2020-02-22	2020-02-22	Blitz	Cape Winelands (WCW)	9	9	4.5	Yes	Analysis
2	Cape Winelands Schools Trials 1 2020 (U15 Boys)	2020-02-15	2020-02-15	Rapid	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
3	3rd ACL Chess Festival 2019 (Open)	2019-09-05	2019-09-05	Rapid	Cape Town (WCT)	6	6	1	Yes	Analysis
4	Western Cape Top Schools 2019 (U15 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
5	2019 Western Province League (E)	2019-07-27	2019-08-10	Standard	Cape Town (WCT)	9	2	2	Yes	Analysis
6	Cape Winelands Schools - Top Schools 2019 (U15 Mix)	2019-07-27	2019-07-27	Rapid	Cape Winelands (WCW)	3	2	1	Yes	Analysis
7	Paul Roos Blitz 2019	2019-02-23	2019-02-23	Blitz	Cape Winelands (WCW)	9	9	3.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Cape Winelands Schools Trials 1 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-02-22	rnd 2	type Blitz	result 0.5
		Opponent Adler, K (Keano)				Opponent Geyser, G (Gavin)
2	3	Tournament Western Cape Top Schools 2019				Tournament Western Cape Top Schools 2019
		date 2019-08-31	rnd 2	type Standard	result 1	date 2019-09-01	rnd 4	type Standard	result 1
		Opponent Franzman, A (Archard)				Opponent Sinzumusi, A (Ahmed)
3	3	Tournament Cape Winelands Schools - Top Schools 2019				Tournament 2019 Western Province League
		date 2019-07-27	rnd 3	type Rapid	result 1	date 2019-08-03	rnd 6	type Standard	result 1
		Opponent Kleynhans, J (Jayden)				Opponent Rogers, M (Morgan)

#	Games	Start				End
1	3	Tournament Western Cape Top Schools 2019				Tournament Western Cape Top Schools 2019
		date 2019-08-31	rnd 2	type Standard	result 1	date 2019-09-01	rnd 4	type Standard	result 1
		Opponent Franzman, A (Archard)				Opponent Sinzumusi, A (Ahmed)
2	2	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-08-03	rnd 4	type Standard	result 1	date 2019-08-03	rnd 6	type Standard	result 1
		Opponent Busuku, A (Alute)				Opponent Rogers, M (Morgan)

#	Games	Start				End
1	2	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-15	rnd 1	type Rapid	result 0.5	date 2020-02-15	rnd 2	type Rapid	result 1
		Opponent Sauls, E (Elisa)				Opponent Manus, G (Granville)
2	1	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-02-15	rnd 6	type Rapid	result 1
		Opponent Adler, K (Keano)				Opponent Adler, K (Keano)
3	1	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-15	rnd 4	type Rapid	result 1	date 2020-02-15	rnd 4	type Rapid	result 1
		Opponent Verhoog, W (Walken)				Opponent Verhoog, W (Walken)

#	Games	Start				End
1	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 4	type Blitz	result 1	date 2020-02-22	rnd 5	type Blitz	result 1
		Opponent Skippers, R (Robyn)				Opponent Van Tonder, W (Wium)
2	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 1	type Blitz	result 1	date 2020-02-22	rnd 2	type Blitz	result 0.5
		Opponent Swartbooi, L (Liyabukwa)				Opponent Geyser, G (Gavin)
3	2	Tournament Paul Roos Blitz 2019				Tournament Paul Roos Blitz 2019
		date 2019-02-23	rnd 5	type Blitz	result 0.5	date 2019-02-23	rnd 6	type Blitz	result 1
		Opponent Abrahams, CJ (Chad)				Opponent Samuels, T (Tatum)

#	Games	Start				End
1	3	Tournament Western Cape Top Schools 2019				Tournament Western Cape Top Schools 2019
		date 2019-08-31	rnd 2	type Standard	result 1	date 2019-09-01	rnd 4	type Standard	result 1
		Opponent Franzman, A (Archard)				Opponent Sinzumusi, A (Ahmed)
2	3	Tournament Cape Winelands Schools - Top Schools 2019				Tournament 2019 Western Province League
		date 2019-07-27	rnd 3	type Rapid	result 1	date 2019-08-03	rnd 6	type Standard	result 1
		Opponent Kleynhans, J (Jayden)				Opponent Rogers, M (Morgan)
3	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 4	type Blitz	result 1	date 2020-02-22	rnd 5	type Blitz	result 1
		Opponent Skippers, R (Robyn)				Opponent Van Tonder, W (Wium)

#	Games	Start				End
1	3	Tournament Western Cape Top Schools 2019				Tournament Western Cape Top Schools 2019
		date 2019-08-31	rnd 2	type Standard	result 1	date 2019-09-01	rnd 4	type Standard	result 1
		Opponent Franzman, A (Archard)				Opponent Sinzumusi, A (Ahmed)
2	2	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-08-03	rnd 4	type Standard	result 1	date 2019-08-03	rnd 6	type Standard	result 1
		Opponent Busuku, A (Alute)				Opponent Rogers, M (Morgan)

#	Games	Start				End
1	1	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-15	rnd 6	type Rapid	result 1	date 2020-02-15	rnd 6	type Rapid	result 1
		Opponent Adler, K (Keano)				Opponent Adler, K (Keano)
2	1	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-15	rnd 4	type Rapid	result 1	date 2020-02-15	rnd 4	type Rapid	result 1
		Opponent Verhoog, W (Walken)				Opponent Verhoog, W (Walken)
3	1	Tournament Cape Winelands Schools Trials 1 2020				Tournament Cape Winelands Schools Trials 1 2020
		date 2020-02-15	rnd 2	type Rapid	result 1	date 2020-02-15	rnd 2	type Rapid	result 1
		Opponent Manus, G (Granville)				Opponent Manus, G (Granville)

#	Games	Start				End
1	2	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 4	type Blitz	result 1	date 2020-02-22	rnd 5	type Blitz	result 1
		Opponent Skippers, R (Robyn)				Opponent Van Tonder, W (Wium)
2	1	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 8	type Blitz	result 1	date 2020-02-22	rnd 8	type Blitz	result 1
		Opponent Christians, M (Matthew)				Opponent Christians, M (Matthew)
3	1	Tournament Paul Roos Blitz 2020				Tournament Paul Roos Blitz 2020
		date 2020-02-22	rnd 1	type Blitz	result 1	date 2020-02-22	rnd 1	type Blitz	result 1
		Opponent Swartbooi, L (Liyabukwa)				Opponent Swartbooi, L (Liyabukwa)

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	Nel ,MD (Markus Daniel)	2	0	-425	0	0	0	2	0	-425	0	0	0
1	Nel ,MD (Markus Daniel)	2	1182.4	757.4	0	0	0	2	1115.8	757.4	0	0	0
2	Volschenk ,AL (Alexander Louw)	1	1	425	1	1	425	0	0	0	0	0	0
2	Volschenk ,AL (Alexander Louw)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Jacobs ,M (Menwill)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Jacobs ,M (Menwill)	1	1002.9	577.9	1	1011.6	577.9	0	0	0	0	0	0
4	Kleynhans ,T (Teon)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Kleynhans ,T (Teon)	1	1285.9	860.9	1	1271.9	860.9	0	0	0	0	0	0
5	Busuku ,A (Alute)	1	1	425	1	1	425	0	0	0	0	0	0
5	Busuku ,A (Alute)	1	1260.3	1685.3	1	1266.3	1685.3	0	0	0	0	0	0
6	Africa ,G (Gillmore)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Africa ,G (Gillmore)	1	1461.9	1036.9	0	0	0	1	1201.1	1036.9	0	0	0
7	Abrahams ,B (Basheer)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Abrahams ,B (Basheer)	1	1265.7	840.7	0	0	0	1	1298.9	840.7	0	0	0
8	Manus ,G (Granville)	1	1	425	0	0	0	1	1	425	0	0	0
8	Manus ,G (Granville)	1	1148.6	1573.6	0	0	0	1	1145.5	1573.6	0	0	0
9	Altalib ,S (Saajid)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Altalib ,S (Saajid)	1	1231.7	806.7	0	0	0	1	1229.2	806.7	0	0	0
10	Osborne ,N (Nicole)	1	1	425	0	0	0	1	1	425	0	0	0
10	Osborne ,N (Nicole)	1	1201.4	1626.4	0	0	0	1	1200	1626.4	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Roos, J (Josua)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms