Chess South Africa Ratings Database

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Personal

De Silva, A (Alyssa)

Chess SA id

2120150143

FIDE id

Date of birth

2012-04-18 (U16)

Gender

Female

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-31

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1457.7	1453.5	1265.8	1200
Raw rating	1457.7	1453.5	1265.8	1200
Weighted rating	1432.6	1425.2	1263.8	1200
Weighted performance	1365.1	1349.9	0	0
Floor	957.7	953.5	765.8	700
K-factor	32	32	36	36
Min/Max rating change allowed	114.9	115.6	151	165.8
Highest rating	1457.7 2025-07-01	1453.5 2025-07-01	1346.7 2024-05-01	1200 2018-10-01
Highest raw rating	1457.7 2025-07-01	1453.5 2025-07-01	1265.8 2024-06-01	1200 2024-03-01
Highest weighted rating	1408.5 2025-08-01	1398.6 2025-08-01	1255.6 2025-08-01	1200 2018-10-01
Highest weighted performance	1419.7 2025-07-01	1443 2024-05-01	1346.7 2024-05-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-25.5	-29.3	0	0
New rating	1432.2	1424.2	1265.8	1200
Analysis
Rating	1457.7	1453.5	1265.8	1200
Raw rating	1457.7	1453.5	1265.8	1200
Weighted rating	1432.6	1425.2	1263.8
Weighted performance	1365.1	1349.9	0
K-factor	32	32	36	36
Floor	957.7	953.5	765.8	700
Max/Min rating change allowed	114.9	115.6	151	165.8
Games	4	4	0	0
Score	1	1	0	0
Expected score	2.53	2.9	0	0
Score-Expected	-1.53	-1.9	0	0
Temp raw +/-	-48.9	-60.8	0	0
Final raw +/-	-48.9	-60.8	0	0
New raw rating	1408.8	1392.7	1265.8	1200
New weighted rating	1432.2	1424.2	1264.7	1200
New weighted performance	1275.2	1259.1	0	0
Temp new rating	1432.2	1424.2	1265.8	1200
Temp new rating +/-	-25.5	-29.3	0	0
Final new rating +/-	-25.5	-29.3	0	0
New rating	1432.2	1424.2	1265.8	1200
New K-factor	32	32	36	36
New floor	957.7	953.5	765.8	700

Item	Main	Standard	Rapid
	0	0	0
	35	35	0
	32	23	9
	32	27	5
	0	0	0
	0	0	0
History	99	85	14

Games since
	Main 67	Standard 58		Rapid 9		Blitz 0
Gender	Female
Age group	U14
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1607		495		252
Female	232		83		39
U14	235		76		34
U14 Female	52		19		6
Standard
	RSA		Province		Region
Overall	1561		424		225
Female	240		79		37
U14	233		71		31
U14 Female	54		20		7
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U14	-1		-1		-1
U14 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	35	25.5	72.86	194.3	1272.8	1467.1
Standard	35	25.5	72.86	194.3	1272.8	1467.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	99	65.5	66.16	137.4	1270.1	1407.5
Standard	85	57.5	67.65	150	1269.3	1419.3
Rapid	14	8	57.14	60.7	1275.1	1335.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1457.7	1453.5	1265.8	1200
2025-11-30	1457.7	1453.5	1265.8	1200
2025-11-01	1457.7	1453.5	1265.8	1200
2025-09-30	1457.7	1453.5	1265.8	1200
2025-09-01	1457.7	1453.5	1265.8	1200
2025-08-01	1457.7	1453.5	1265.8	1200
2025-07-01	1457.7	1453.5	1265.8	1200
2025-06-01	1408.5	1396.9	1265.8	1200
2025-05-01	1406.5	1395.5	1265.8	1200
2025-04-01	1406.5	1395.5	1265.8	1200
2025-03-01	1421.7	1414.7	1265.8	1200
2025-02-01	1429.4	1423.5	1265.8	1200
2025-01-01	1401.1	1388.8	1265.8	1200
2024-12-01	1401.1	1388.8	1265.8	1200
2024-11-01	1416.2	1404.8	1265.8	1200
2024-10-01	1416.2	1404.8	1265.8	1200
2024-09-01	1416.2	1404.8	1265.8	1200
2024-11-01	1416.2	1404.8	1265.8	1200
2024-07-01	1416.2	1404.8	1265.8	1200
2024-06-01	1416.2	1404.8	1265.8	1200
2024-05-01	1367.1	1359.1	1231.2	1200
2024-04-01	1361.9	1359.1	1188.4	1200
2024-03-01	1319.8	1304.4	1188.4	1200
2024-02-01	1318.6	1303.7	1188.4	1200

Comming soon.

Tournaments

History

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Helderberg Chess Club Open 2026 (B)	2026-01-17	2026-01-17	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Helderberg Chess Club Open 2026 (B)	2026-01-17	2026-01-17	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Helderberg Chess Club Open 2026 (B)	2026-01-17	2026-01-17	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis
2	Cape Town Chess Junior League 2025 (U14)	2025-05-10	2025-05-31	Standard	Cape Town (WCT)	6	6	6	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U13 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
4	Cape Town Open Chess Festival 2025 (U14)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Steinitz Festival 2025 (Open)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	0	0	No	Analysis
6	CT Metro Schools Individual Closed 2025 (U13 Girls)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
7	CT Metro District East Schools Chess Individuals Trials 2025 (U13 Girls)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
8	Helderberg Chess Club PS Development Tournament 2025 (U13 Girls)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
9	Helderberg Chess Club Open 2024 (B)	2024-11-09	2024-11-10	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
10	Cape Town Junior League Finals 2024 (U13 Girls A)	2024-05-18	2024-05-18	Rapid	Cape Town (WCT)	5	4	3	Yes	Analysis
11	Western Cape PS Individuals Championship 2024 (U13 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	5	Yes	Analysis
12	Cape Town Junior League Qualifier 2024 (U13 Girls)	2024-04-06	2024-04-06	Rapid	Cape Town (WCT)	6	5	3	Yes	Analysis
13	Cape Town Metro Schools Chess Closed Individuals 2024 (U13 Girls)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
14	CT District East Schools Chess Individuals Trails 2024 (U13 Girls)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
15	Grant East Primary School Invitational Chess Tournament 2023 (U11 Mixed)	2023-11-04	2023-11-04	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
16	CW Top Schools 2023 (U12)	2023-08-12	2023-08-12	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
17	Cape Winelands Open 2023 (U12)	2023-07-23	2023-07-23	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
18	Western Cape PS Individuals 2023 (U11 Girls)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
19	Cape Town Metro Schools Chess Closed Individuals 2023 (U11 Girls)	2023-03-03	2023-03-04	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
20	District East Schools Chess Individual Trials 2023 (U11 Girls)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis

#	Games	Start				End
1	6	Tournament Western Cape Schools Individual Championship 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-17	rnd 4	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent Johnson, M (Melanique)				Opponent Gabhile, E (Elihle)
2	6	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Pretorius, M (Mia)				Opponent Phileman, Z (Zaeemah)
3	5	Tournament Western Cape PS Individuals Championship 2024				Tournament Cape Town Junior League Finals 2024
		date 2024-05-04	rnd 3	type Standard	result 1	date 2024-05-18	rnd 1	type Rapid	result 1
		Opponent Wanie, A (Amy Lee)				Opponent Miles, K (Kristen)

#	Games	Start				End
1	6	Tournament Western Cape Schools Individual Championship 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-17	rnd 4	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent Johnson, M (Melanique)				Opponent Gabhile, E (Elihle)
2	6	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Pretorius, M (Mia)				Opponent Phileman, Z (Zaeemah)
3	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-05-04	rnd 1	type Standard	result 1
		Opponent James, T (Taylah)				Opponent Opperman, K (Kelly-Ann)

#	Games	Start				End
1	2	Tournament Cape Town Junior League Finals 2024				Tournament Cape Town Junior League Finals 2024
		date 2024-05-18	rnd 4	type Rapid	result 1	date 2024-05-18	rnd 5	type Rapid	result 1
		Opponent Nobanda, S (Siphokuhle)				Opponent Mohodi, I (Itumeleng)
2	2	Tournament Cape Town Junior League Qualifier 2024				Tournament Cape Town Junior League Finals 2024
		date 2024-04-06	rnd 6	type Rapid	result 1	date 2024-05-18	rnd 1	type Rapid	result 1
		Opponent Peter, S (Sisonke)				Opponent Miles, K (Kristen)
3	2	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Cape Town Junior League Qualifier 2024
		date 2023-11-04	rnd 6	type Rapid	result 1	date 2024-04-06	rnd 1	type Rapid	result 1
		Opponent Diedericks, M (Michael)				Opponent Qoto, A (Asivile)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Western Cape Schools Individual Championship 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-17	rnd 4	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent Johnson, M (Melanique)				Opponent Gabhile, E (Elihle)
2	6	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Pretorius, M (Mia)				Opponent Phileman, Z (Zaeemah)
3	5	Tournament Western Cape PS Individuals Championship 2024				Tournament Cape Town Junior League Finals 2024
		date 2024-05-04	rnd 3	type Standard	result 1	date 2024-05-18	rnd 1	type Rapid	result 1
		Opponent Wanie, A (Amy Lee)				Opponent Miles, K (Kristen)

#	Games	Start				End
1	6	Tournament Western Cape Schools Individual Championship 2025				Tournament Cape Town Chess Junior League 2025
		date 2025-05-17	rnd 4	type Standard	result 1	date 2025-05-31	rnd 6	type Standard	result 1
		Opponent Johnson, M (Melanique)				Opponent Gabhile, E (Elihle)
2	6	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 3	type Standard	result 1	date 2025-02-01	rnd 3	type Standard	result 1
		Opponent Pretorius, M (Mia)				Opponent Phileman, Z (Zaeemah)
3	4	Tournament Helderberg Chess Club Open 2024				Tournament Helderberg Chess Club PS Development Tournament 2025
		date 2024-11-09	rnd 4	type Standard	result 1	date 2025-01-25	rnd 1	type Standard	result 1
		Opponent Sprowson, A (Andrew)				Opponent Nezar-Pretorius, K (Kathryn)

#	Games	Start				End
1	2	Tournament Cape Town Junior League Finals 2024				Tournament Cape Town Junior League Finals 2024
		date 2024-05-18	rnd 4	type Rapid	result 1	date 2024-05-18	rnd 5	type Rapid	result 1
		Opponent Nobanda, S (Siphokuhle)				Opponent Mohodi, I (Itumeleng)
2	2	Tournament Cape Town Junior League Qualifier 2024				Tournament Cape Town Junior League Finals 2024
		date 2024-04-06	rnd 6	type Rapid	result 1	date 2024-05-18	rnd 1	type Rapid	result 1
		Opponent Peter, S (Sisonke)				Opponent Miles, K (Kristen)
3	2	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Cape Town Junior League Qualifier 2024
		date 2023-11-04	rnd 6	type Rapid	result 1	date 2024-04-06	rnd 1	type Rapid	result 1
		Opponent Diedericks, M (Michael)				Opponent Qoto, A (Asivile)

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	Webb ,A (Amori)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Webb ,A (Amori)	3	1175.7	1034	3	1163.8	1034	0	0	0	0	0	0
2	Shapiro ,H (Hannah)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Shapiro ,H (Hannah)	3	1277.4	1419.1	3	1263.7	1419.1	0	0	0	0	0	0
3	Pretorius ,M (Mia)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Pretorius ,M (Mia)	3	1404.4	1262.7	3	1389.6	1262.7	0	0	0	0	0	0
4	Pfukwa ,P (Palesa)	3	0	-425	2	0	-425	1	0	-425	0	0	0
4	Pfukwa ,P (Palesa)	3	1394.1	969.1	2	1348.2	969.1	1	1382.9	969.1	0	0	0
5	Gandla ,A (Anyasree)	2	2	425	2	2	425	0	0	0	0	0	0
5	Gandla ,A (Anyasree)	2	1196.6	1621.6	2	1196.7	1621.6	0	0	0	0	0	0
6	Bolton ,A (Alyssa)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
6	Bolton ,A (Alyssa)	2	1315.2	1102.7	2	1285.1	1102.7	0	0	0	0	0	0
7	Li ,K (Karena)	2	2	425	2	2	425	0	0	0	0	0	0
7	Li ,K (Karena)	2	1295.5	1720.5	2	1277.3	1720.5	0	0	0	0	0	0
8	Liu ,A (Amy)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Liu ,A (Amy)	2	1446.8	1021.8	1	1355.9	1021.8	1	1377.9	1021.8	0	0	0
9	Peter ,S (Sisonke)	2	2	425	1	1	425	1	1	425	0	0	0
9	Peter ,S (Sisonke)	2	1067.1	1492.1	1	1063.9	1492.1	1	1093.2	1492.1	0	0	0
10	Nezar-Pretorius ,K (Kathryn)	1	1	425	1	1	425	0	0	0	0	0	0
10	Nezar-Pretorius ,K (Kathryn)	1	1225.2	1650.2	1	1228.4	1650.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

De Silva, A (Alyssa)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms