Chess South Africa Ratings Database

PLAYER PAGE

Personal

Costa, T (Thalia Anne)

Chess SA id

2180314648

FIDE id

Date of birth

2018-06-07 (U10)

Gender

Female

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-11-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1231.8	1225.6	1201.8	1200
Raw rating	1231.8	1225.6	1201.8	1200
Weighted rating	1207.6	1207.3	1200.3	1200
Weighted performance	0	0	0	0
Floor	731.8	725.6	701.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	158.5	159.9	165.4	165.8
Highest rating	1231.8 2025-11-30	1225.6 2025-09-30	1201.8 2025-11-30	1200 2025-03-01
Highest raw rating	1231.8 2025-11-30	1225.6 2025-09-30	1201.8 2025-11-30	1200 2025-03-01
Highest weighted rating	1205.3 2025-11-30	1201.6 2025-09-30	1200.1 2025-11-30	1200 2025-03-01
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	1231.8	1225.6	1201.8	1200
Analysis
Rating	1231.8	1225.6	1201.8	1200
Raw rating	1231.8	1225.6	1201.8	1200
Weighted rating	1207.6	1207.3	1200.3
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	731.8	725.6	701.8	700
Max/Min rating change allowed	158.5	159.9	165.4	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	1231.8	1225.6	1201.8	1200
New weighted rating	1209.9	1209.1	1200.4	1200
New weighted performance	0	0	0	0
Temp new rating	1231.8	1225.6	1201.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1231.8	1225.6	1201.8	1200
New K-factor	36	36	36	36
New floor	731.8	725.6	701.8	700

Item	Main	Standard	Rapid
	0	0	0
	19	14	5
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	19	14	5

Games since
	Main 19	Standard 14		Rapid 5		Blitz 0
Gender	Female
Age group	U8
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U8	-1		-1		-1
U8 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	19	8.5	44.74	-44.7	1243	1198.3
Standard	14	6	42.86	-60.7	1218	1157.3
Rapid	5	2.5	50	0	1313.1	1313.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	19	8.5	44.74	-44.7	1243	1198.3
Standard	14	6	42.86	-60.7	1218	1157.3
Rapid	5	2.5	50	0	1313.1	1313.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1231.8	1225.6	1201.8	1200
2025-11-30	1231.8	1225.6	1201.8	1200
2025-11-01	1220.6	1225.6	1200	1200
2025-09-30	1220.6	1225.6	1200	1200
2025-09-01	1199.7	1199.6	1200	1200
2025-08-01	1199.7	1199.6	1200	1200
2025-07-01	1199.7	1199.6	1200	1200
2025-06-01	1199.7	1199.6	1200	1200
2025-05-01	1199.5	1199.4	1200	1200
2025-04-01	1197.5	1197.1	1200	1200
2025-03-01	1198.8	1198.5	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
2024-11-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	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

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	Voories Skaaktoernooi 2025 (O7)	2025-11-08	2025-11-08	Rapid	Eden (WEG)	5	5	2.5	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U7)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	3	Yes	Analysis
3	George Schools Chess Trials 3 2025 (U7 Girls)	2025-03-01	2025-03-01	Standard	Eden (WEG)	5	4	1	Yes	Analysis
4	George Schools Chess Trials 1 2025 (U7 Gils)	2025-02-01	2025-02-01	Standard	Eden (WEG)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 4	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Jagers, Z (Zion)				Opponent Maarman, R (Ryleigh)
2	2	Tournament George Schools Chess Trials 1 2025				Tournament George Schools Chess Trials 1 2025
		date 2025-02-01	rnd 1	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Stoffels, Z (Zarah)				Opponent Abrahams, N (Nova)
3	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-03-01	rnd 5	type Standard	result 1
		Opponent Ruiters, Z (Zayaan)				Opponent Ruiters, Z (Zayaan)

#	Games	Start				End
1	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 4	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Jagers, Z (Zion)				Opponent Maarman, R (Ryleigh)
2	2	Tournament George Schools Chess Trials 1 2025				Tournament George Schools Chess Trials 1 2025
		date 2025-02-01	rnd 1	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Stoffels, Z (Zarah)				Opponent Abrahams, N (Nova)
3	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-03-01	rnd 5	type Standard	result 1
		Opponent Ruiters, Z (Zayaan)				Opponent Ruiters, Z (Zayaan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 4	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Jagers, Z (Zion)				Opponent Maarman, R (Ryleigh)
2	2	Tournament George Schools Chess Trials 1 2025				Tournament George Schools Chess Trials 1 2025
		date 2025-02-01	rnd 1	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Stoffels, Z (Zarah)				Opponent Abrahams, N (Nova)
3	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-03-01	rnd 5	type Standard	result 1
		Opponent Ruiters, Z (Zayaan)				Opponent Ruiters, Z (Zayaan)

#	Games	Start				End
1	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 4	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Jagers, Z (Zion)				Opponent Maarman, R (Ryleigh)
2	2	Tournament George Schools Chess Trials 1 2025				Tournament George Schools Chess Trials 1 2025
		date 2025-02-01	rnd 1	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Stoffels, Z (Zarah)				Opponent Abrahams, N (Nova)
3	1	Tournament George Schools Chess Trials 3 2025				Tournament George Schools Chess Trials 3 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-03-01	rnd 5	type Standard	result 1
		Opponent Ruiters, Z (Zayaan)				Opponent Ruiters, Z (Zayaan)

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	Rostoll ,C (Chante)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Rostoll ,C (Chante)	2	1256.7	831.7	2	1268.3	831.7	0	0	0	0	0	0
2	Anthony ,A (Avia)	2	1	0	1	0	-425	1	1	425	0	0	0
2	Anthony ,A (Avia)	2	1243.4	1243.4	1	1203.3	818.4	1	1200	1668.4	0	0	0
3	Ruiters ,Z (Zayaan)	2	2	425	1	1	425	1	1	425	0	0	0
3	Ruiters ,Z (Zayaan)	2	1199.4	1624.4	1	1188.9	1624.4	1	1199.3	1624.4	0	0	0
4	Stoffels ,Z (Zarah)	1	1	425	1	1	425	0	0	0	0	0	0
4	Stoffels ,Z (Zarah)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Abrahams ,N (Nova)	1	1	425	1	1	425	0	0	0	0	0	0
5	Abrahams ,N (Nova)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Vlietstra ,L (Lily)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Vlietstra ,L (Lily)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Haman ,E (Elshan�)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Haman ,E (Elshan�)	1	1236.5	811.5	1	1240.9	811.5	0	0	0	0	0	0
8	Guze ,K (Khayone)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Guze ,K (Khayone)	1	1196.1	771.1	1	1195.3	771.1	0	0	0	0	0	0
9	Kock ,R (Reese)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Kock ,R (Reese)	1	1200	775	1	1200	775	0	0	0	0	0	0
10	Erasmus ,A (Adam)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Erasmus ,A (Adam)	1	1199.4	774.4	1	1200	774.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Costa, T (Thalia Anne)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms