Chess South Africa Ratings Database

PLAYER PAGE

Personal

Roos, G (Gabriella)

Chess SA id

208066845

FIDE id

Date of birth

2008-10-07 (U18)

Gender

Female

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1120.9	1112	626	626
Raw rating	1120.9	1112	626	626
Weighted rating	1120.9	1112	626	626
Weighted performance	274.2	271.4	0	0
Floor	620.9	612	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	185.6	188	375.7	375.7
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-03-01	1200 2024-03-01
Highest raw rating	1120.9 2024-03-01	1112 2024-03-01	626 2024-03-01	626 2024-03-01
Highest weighted rating	1120.9 2024-11-01	1112 2024-11-01	626 2024-11-01	626 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1120.9	1112	626	626
Analysis
Rating	1120.9	1112	626	626
Raw rating	1120.9	1112	626	626
Weighted rating	1120.9	1112	626
Weighted performance	274.2	271.4	0
K-factor	40	40	40	40
Floor	620.9	612	500	500
Max/Min rating change allowed	185.6	188	375.7	375.7
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	1120.9	1112	626	626
New weighted rating	1120.9	1112	626	626
New weighted performance	267.4	264.7	0	0
Temp new rating	1120.9	1112	626	626
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1120.9	1112	626	626
New K-factor	40	40	40	40
New floor	620.9	612	500	500

Item	Main	Standard
	0	0
	0	0
	0	0
	0	0
	0	0
	0	0
History	282	282

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U18
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U18	-1		-1		-1
U18 Female	-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	91	47.5	52.2	18.7	952.6	971.3
Standard	91	47.5	52.2	18.7	952.6	971.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1120.9	1112	626	626
2025-09-30	1120.9	1112	626	626
2025-09-01	1120.9	1112	626	626
2025-08-01	1120.9	1112	626	626
2025-07-01	1120.9	1112	626	626
2025-06-01	1120.9	1112	626	626
2025-05-01	1120.9	1112	626	626
2025-04-01	1120.9	1112	626	626
2025-03-01	1120.9	1112	626	626
2025-02-01	1120.9	1112	626	626
2025-01-01	1120.9	1112	626	626
2024-12-01	1120.9	1112	626	626
2024-11-01	1120.9	1112	626	626
2024-10-01	1120.9	1112	626	626
2024-09-01	1120.9	1112	626	626
2024-08-01	1120.9	1112	626	626
2024-07-01	1120.9	1112	626	626
2024-09-01	1120.9	1112	626	626
2024-05-01	1120.9	1112	626	626
2024-04-01	1120.9	1112	626	626
2024-03-01	1120.9	1112	626	626
2024-02-01	1120.9	1112	626	626
2024-01-01	1120.9	1112	626	626
2023-12-01	1120.9	1112	626	626

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	Heidelberg Open 2020 (C)	2020-02-01	2020-02-01	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
2	2019 Gauteng School League Finals (U13 Girls)	2019-08-23	2019-08-23	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	D7 Primary School League 2019 (Girls)	2019-08-03	2019-08-03	Standard	Sedibeng (GSV)	6	6	4	Yes	Analysis
4	D7 Individuals 2019 (U11 Girls)	2019-05-04	2019-05-04	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	2019 Heidelberg Open (C)	2019-02-02	2019-02-02	Standard	Sedibeng (GSV)	5	5	1	Yes	Analysis
6	Eagle`s Open 2018 (C)	2018-12-08	2018-12-08	Standard	Sedibeng (GSV)	5	4	0	Yes	Analysis
7	South African Junior Team Championships 2018 (U12D)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	2.5	Yes	Analysis
8	2018 Interregion Sedibeng vs Ekurhuleni (P)	2018-11-03	2018-11-03	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
9	2018 Sedibeng Summer Open (I)	2018-10-20	2018-10-20	Standard	Sedibeng (GSV)	5	5	4.5	Yes	Analysis
10	2018 Gauteng League Final (U11)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
11	Hoerskool Drie Riviere Open 2018 (D)	2018-06-09	2018-06-09	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
12	2018 Gauteng Secondary Schools Individual Chess Championships (U11 Girls)	2018-05-25	2018-05-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	Word of Life Open 2018 (D)	2018-05-12	2018-05-12	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
14	Heidelberg Skaak Klub 2018 (Team 11)	2018-05-05	2018-05-05	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
15	D7 Primary School League 2023 (U11 Boys+Mixed)	2018-04-21	2018-04-21	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
16	D7 Individual 2018 (U11 Girls)	2018-02-24	2018-02-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
17	2018 Volkskool Open (E)	2018-02-17	2018-02-17	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
18	South African Junior Team Championships 2017 (U10 Girls)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	6	2.5	Yes	Analysis

#	Games	Start				End
1	9	Tournament 2018 Gauteng League Final				Tournament 2018 Interregion Sedibeng vs Ekurhuleni
		date 2018-08-24	rnd 5	type Standard	result 1	date 2018-11-03	rnd 3	type Standard	result 1
		Opponent Mshengu, BA (Bale Awanda)				Opponent Norval, H (Hendrik)
2	5	Tournament D7 Individuals 2019				Tournament D7 Primary School League 2019
		date 2019-05-04	rnd 2	type Standard	result 1	date 2019-08-03	rnd 1	type Standard	result 1
		Opponent Manoto, K (Karabo)				Opponent Kok, S (Sydney)
3	4	Tournament Hoerskool Drie Riviere Open 2018				Tournament 2018 Gauteng League Final
		date 2018-06-09	rnd 3	type Standard	result 0.5	date 2018-08-24	rnd 1	type Standard	result 1
		Opponent Kapp, JS (Jeandre)				Opponent Swart, M (Minieke)

#	Games	Start				End
1	9	Tournament 2018 Gauteng League Final				Tournament 2018 Interregion Sedibeng vs Ekurhuleni
		date 2018-08-24	rnd 5	type Standard	result 1	date 2018-11-03	rnd 3	type Standard	result 1
		Opponent Mshengu, BA (Bale Awanda)				Opponent Norval, H (Hendrik)
2	5	Tournament D7 Individuals 2019				Tournament D7 Primary School League 2019
		date 2019-05-04	rnd 2	type Standard	result 1	date 2019-08-03	rnd 1	type Standard	result 1
		Opponent Manoto, K (Karabo)				Opponent Kok, S (Sydney)
3	4	Tournament Hoerskool Drie Riviere Open 2018				Tournament 2018 Gauteng League Final
		date 2018-06-09	rnd 3	type Standard	result 0.5	date 2018-08-24	rnd 1	type Standard	result 1
		Opponent Kapp, JS (Jeandre)				Opponent Swart, M (Minieke)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament 2018 Gauteng League Final				Tournament 2018 Sedibeng Summer Open
		date 2018-08-24	rnd 5	type Standard	result 1	date 2018-10-20	rnd 4	type Standard	result 1
		Opponent Mshengu, BA (Bale Awanda)				Opponent Meyer, AF (Anko)
2	4	Tournament Heidelberg Skaak Klub 2018				Tournament Word of Life Open 2018
		date 2018-05-05	rnd 5	type Standard	result 1	date 2018-05-12	rnd 3	type Standard	result 1
		Opponent Tolmay, L (Llewellyn)				Opponent Botha, K (Kriegler)
3	4	Tournament D7 Primary School League 2023				Tournament Heidelberg Skaak Klub 2018
		date 2018-04-21	rnd 3	type Standard	result 1	date 2018-05-05	rnd 1	type Standard	result 1
		Opponent Mare, H (Hannah)				Opponent Van Wyk, J (Jonathan)

#	Games	Start				End
1	5	Tournament 2018 Gauteng League Final				Tournament 2018 Sedibeng Summer Open
		date 2018-08-24	rnd 5	type Standard	result 1	date 2018-10-20	rnd 4	type Standard	result 1
		Opponent Mshengu, BA (Bale Awanda)				Opponent Meyer, AF (Anko)
2	4	Tournament Heidelberg Skaak Klub 2018				Tournament Word of Life Open 2018
		date 2018-05-05	rnd 5	type Standard	result 1	date 2018-05-12	rnd 3	type Standard	result 1
		Opponent Tolmay, L (Llewellyn)				Opponent Botha, K (Kriegler)
3	4	Tournament D7 Primary School League 2023				Tournament Heidelberg Skaak Klub 2018
		date 2018-04-21	rnd 3	type Standard	result 1	date 2018-05-05	rnd 1	type Standard	result 1
		Opponent Mare, H (Hannah)				Opponent Van Wyk, J (Jonathan)

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	Beere ,A (Aidan)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
1	Beere ,A (Aidan)	3	1158.1	1441.4	3	1149.2	1441.4	0	0	0	0	0	0
2	Kok ,S (Sydney)	3	3	425	3	3	425	0	0	0	0	0	0
2	Kok ,S (Sydney)	3	1032.5	1457.5	3	1016.7	1457.5	0	0	0	0	0	0
3	Coetzee ,A (Anika)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Coetzee ,A (Anika)	2	561.4	136.4	2	561.4	136.4	0	0	0	0	0	0
4	Motloung ,L (Lerato)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Motloung ,L (Lerato)	2	789	364	2	789.1	364	0	0	0	0	0	0
5	Husha ,O (Omphile)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Husha ,O (Omphile)	2	1081.3	656.3	2	1091	656.3	0	0	0	0	0	0
6	Vogel ,D (Dane)	2	2	425	2	2	425	0	0	0	0	0	0
6	Vogel ,D (Dane)	2	500	925	2	500	925	0	0	0	0	0	0
7	Naude ,E (Enrique)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Naude ,E (Enrique)	2	911.9	486.9	2	927.1	486.9	0	0	0	0	0	0
8	Smangele ,G (Gladile)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Smangele ,G (Gladile)	2	1194.4	769.4	2	1192.8	769.4	0	0	0	0	0	0
9	Janse Van Rensburg ,L (Lene)	2	2	425	2	2	425	0	0	0	0	0	0
9	Janse Van Rensburg ,L (Lene)	2	1026	1451	2	1004	1451	0	0	0	0	0	0
10	Tolmay ,L (Llewellyn)	1	1	425	1	1	425	0	0	0	0	0	0
10	Tolmay ,L (Llewellyn)	1	733.4	1158.4	1	774.8	1158.4	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, G (Gabriella)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms