Chess South Africa Ratings Database

PLAYER PAGE

Personal

Wu, J (Jason)

Chess SA id

1080108614

FIDE id

Date of birth

2008-12-23 (U18)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

18.7

Junior GPX Points

1387.7

Item	Main	Standard	Rapid	Blitz
Rating	1485.5	1477.8	1331.7	1200
Raw rating	1485.5	1477.8	1331.7	1200
Weighted rating	1455	1459.6	1304.6	1200
Weighted performance	1428.4	1369.5	1070.4	0
Floor	990.3	977.8	832.7	700
K-factor	32	32	36	36
Min/Max rating change allowed	110.4	111.6	137.4	165.8
Highest rating	1490.3 2024-02-01	1477.8 2025-09-30	1332.7 2024-02-01	1200 2018-10-01
Highest raw rating	1490.3 2024-02-01	1477.8 2025-09-30	1332.7 2024-02-01	1200 2024-02-01
Highest weighted rating	1490.3 2024-10-01	1475.2 2024-10-01	1332.7 2024-02-01	1200 2018-10-01
Highest weighted performance	1482.2 2023-03-01	1460.8 2023-09-01	1240.6 2019-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1485.5	1477.8	1331.7	1200
Analysis
Rating	1485.5	1477.8	1331.7	1200
Raw rating	1485.5	1477.8	1331.7	1200
Weighted rating	1455	1459.6	1304.6
Weighted performance	1428.4	1369.5	1070.4
K-factor	32	32	36	36
Floor	990.3	977.8	832.7	700
Max/Min rating change allowed	110.4	111.6	137.4	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	1485.5	1477.8	1331.7	1200
New weighted rating	1457.2	1460.8	1306.6	1200
New weighted performance	1427.9	1369	1069.9	0
Temp new rating	1485.5	1477.8	1331.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1485.5	1477.8	1331.7	1200
New K-factor	32	32	36	36
New floor	990.3	977.8	832.7	700

Item	Main	Standard	Rapid
	0	0	0
	16	11	5
	25	16	9
	26	22	4
	41	36	5
	0	0	0
History	146	97	49

Games since
	Main 41	Standard 27		Rapid 14		Blitz 0
Gender	Male
Age group	U18
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1367		413		58
Male	1169		342		44
U18	217		63		12
U18 Male	192		54		10
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	16	11	68.75	159.4	1371.7	1531.1
Standard	11	8	72.73	193.2	1353	1546.2
Rapid	5	3	60	85	1412.7	1497.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	146	91.5	62.67	107.7	1258.3	1366
Standard	97	59.5	61.34	96.4	1298.4	1394.8
Rapid	49	32	65.31	130.1	1178.9	1309
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1485.5	1477.8	1331.7	1200
2025-09-01	1463.7	1459.3	1331.7	1200
2025-08-01	1458.2	1459.3	1302.7	1200
2025-07-01	1458.2	1459.3	1302.7	1200
2025-06-01	1458.2	1459.3	1302.7	1200
2025-05-01	1458.2	1459.3	1302.7	1200
2025-04-01	1458.2	1459.3	1302.7	1200
2025-03-01	1458.2	1459.3	1302.7	1200
2025-02-01	1450.6	1456.5	1302.5	1200
2025-01-01	1432.3	1437.7	1291.6	1200
2024-12-01	1432.3	1437.7	1291.6	1200
2024-11-01	1432.3	1437.7	1291.6	1200
2024-10-01	1454.6	1469.1	1291.6	1200
2024-09-01	1432.4	1448.6	1291.6	1200
2024-08-01	1432.4	1448.6	1291.6	1200
2024-07-01	1445.9	1475.2	1291.6	1200
2024-06-01	1445.9	1475.2	1291.6	1200
2024-08-01	1445.9	1475.2	1291.6	1200
2024-04-01	1459.9	1475.2	1302.8	1200
2024-03-01	1459.9	1475.2	1302.8	1200
2024-02-01	1490.3	1475.2	1332.7	1200
2024-01-01	1490.3	1475.2	1332.7	1200
2023-12-01	1490.3	1475.2	1332.7	1200
2023-11-01	1490.3	1475.2	1332.7	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U17)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	4	Yes	Analysis
2	Cape Winelands Top Schools 2025 (U17+U19)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U17 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U17)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	4	Yes	Analysis
2	Cape Winelands Top Schools 2025 (U17+U19)	2025-08-23	2025-08-23	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
3	Cape Winelands Schools - Trials 1 2025 (U17 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
4	Western Cape Club Championship 2024 (Tier 2)	2024-10-25	2024-10-27	Standard	Cape Town (WCT)	5	5	1	Yes	Analysis
5	CT League 2024 (C)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	1	0	Yes	Analysis
6	Western Cape Top Schools Championship 2024 (U18 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	5	5	Yes	Analysis
7	Cape Winelands - Top Schools 2024 (U18 Mixed)	2024-07-27	2024-07-27	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
8	Cape Town Junior League Qualifier 2024 (U18 Open)	2024-04-06	2024-04-06	Rapid	Cape Town (WCT)	6	3	1	Yes	Analysis
9	Cape Winelands Schools - HS Trials 1 2024 (U18 Boys)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
10	Western Cape Top Schools 2023 (U15 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	5.5	Yes	Analysis
11	CW Top Schools 2023 (U15 Mix)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	4	3	Yes	Analysis
12	Western Cape HS Individuals 2023 (U15 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
13	Cape Winelands Schools Prestige 2023 (U15 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
14	Cape Winelands Schools Chess - Trials 1 2023 (U15 Boys)	2023-02-25	2023-02-25	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
15	Western Cape Top Schools 2022 (U15 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
16	Western Cape Closed Championship 2022 (Open)	2022-09-24	2022-09-25	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
17	Cape Winelands Schools Top Schools 2022 (U18 Mix)	2022-08-27	2022-08-27	Standard	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
18	Western Cape Schools Chess 2022 (U15 Boys)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	2	Yes	Analysis
19	Cape Winelands Schools 2022 (U15 Boys)	2022-03-05	2022-03-05	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
20	Western Province Open 2022 (Intermediate)	2022-02-26	2022-02-27	Standard	Cape Town (WCT)	6	5	1.5	Yes	Analysis
21	Central Winelands Schools Individual Trials 2022 (U15 Boys)	2022-02-19	2022-02-19	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
22	Cape Winelands Open 2022 (Intermediate)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	4	2	Yes	Analysis
23	Cape Winelands Schools Trials 1 2020 (U13 Boys)	2020-02-08	2020-02-08	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
24	Stellenbosch Primary 2019 (U12)	2019-08-31	2019-08-31	Rapid	Cape Winelands (WCW)	7	7	6	Yes	Analysis
25	Western Cape Schools Individuals 2019 (U11 Boys)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	2	Yes	Analysis
26	Rhenish Primary Chess Tournament 2019 (U12)	2019-05-11	2019-05-11	Rapid	Cape Winelands (WCW)	7	7	5	Yes	Analysis
27	Cape Winelands Schools Closed 2019 (U11 Boys)	2019-03-16	2019-03-17	Standard	Cape Winelands (WCW)	7	6	2.5	Yes	Analysis
28	CW Schools Open 2019 (U11 Boys)	2019-02-02	2019-02-02	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis

#	Games	Start				End
1	9	Tournament CW Top Schools 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-08-26	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Grobler, R (Reinhart)				Opponent Hayes, C (Carlos)
2	7	Tournament Western Cape Closed Championship 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-09-24	rnd 3	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Klue, C (Christiaan)				Opponent Bester, C (Christoff)
3	6	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Club Championship 2024
		date 2024-08-30	rnd 2	type Standard	result 1	date 2024-10-25	rnd 1	type Standard	result 1
		Opponent Daniels, K (Keanu)				Opponent Raubenheimer, A (Aiden)

#	Games	Start				End
1	7	Tournament Western Cape Closed Championship 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-09-24	rnd 3	type Standard	result 1	date 2023-02-25	rnd 3	type Standard	result 1
		Opponent Klue, C (Christiaan)				Opponent Bester, C (Christoff)
2	6	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Club Championship 2024
		date 2024-08-30	rnd 2	type Standard	result 1	date 2024-10-25	rnd 1	type Standard	result 1
		Opponent Daniels, K (Keanu)				Opponent Raubenheimer, A (Aiden)
3	6	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-02	rnd 1	type Standard	result 1	date 2023-09-03	rnd 6	type Standard	result 1
		Opponent Cooper, H (Hayden)				Opponent Snyman, C (Clinton)

#	Games	Start				End
1	5	Tournament Central Winelands Schools Individual Trials 2022				Tournament CW Top Schools 2023
		date 2022-02-19	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 1	type Rapid	result 1
		Opponent Geduld, M (Mireille)				Opponent Page, C (Connor)
2	4	Tournament Rhenish Primary Chess Tournament 2019				Tournament Stellenbosch Primary 2019
		date 2019-05-11	rnd 7	type Rapid	result 1	date 2019-08-31	rnd 3	type Rapid	result 1
		Opponent Zungula, C (Chulumanco)				Opponent Christian, T (Thomas)
3	3	Tournament Cape Winelands Top Schools 2025				Tournament Cape Winelands Top Schools 2025
		date 2025-08-23	rnd 1	type Rapid	result 1	date 2025-08-23	rnd 3	type Rapid	result 0.5
		Opponent Roux, C (Charl)				Opponent Strydom, MJ (Matthys Jacobus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Club Championship 2024
		date 2024-08-30	rnd 2	type Standard	result 1	date 2024-10-25	rnd 1	type Standard	result 1
		Opponent Daniels, K (Keanu)				Opponent Raubenheimer, A (Aiden)
2	5	Tournament Western Cape Top Schools 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-09-02	rnd 3	type Standard	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Don, K (Kyle)				Opponent Hayes, C (Carlos)
3	4	Tournament Central Winelands Schools Individual Trials 2022				Tournament Central Winelands Schools Individual Trials 2022
		date 2022-02-19	rnd 2	type Rapid	result 1	date 2022-02-19	rnd 5	type Rapid	result 1
		Opponent Geduld, M (Mireille)				Opponent Winshaw, B (Bates)

#	Games	Start				End
1	6	Tournament Western Cape Top Schools Championship 2024				Tournament Western Cape Club Championship 2024
		date 2024-08-30	rnd 2	type Standard	result 1	date 2024-10-25	rnd 1	type Standard	result 1
		Opponent Daniels, K (Keanu)				Opponent Raubenheimer, A (Aiden)
2	4	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-02	rnd 3	type Standard	result 1	date 2023-09-03	rnd 6	type Standard	result 1
		Opponent Don, K (Kyle)				Opponent Snyman, C (Clinton)
3	3	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-02-08	rnd 1	type Standard	result 1	date 2025-02-08	rnd 3	type Standard	result 1
		Opponent Lukas, C (Clive)				Opponent Mpariwa, T (Tapfumaneyi)

#	Games	Start				End
1	5	Tournament Central Winelands Schools Individual Trials 2022				Tournament CW Top Schools 2023
		date 2022-02-19	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 1	type Rapid	result 1
		Opponent Geduld, M (Mireille)				Opponent Page, C (Connor)
2	4	Tournament Rhenish Primary Chess Tournament 2019				Tournament Stellenbosch Primary 2019
		date 2019-05-11	rnd 7	type Rapid	result 1	date 2019-08-31	rnd 3	type Rapid	result 1
		Opponent Zungula, C (Chulumanco)				Opponent Christian, T (Thomas)
3	3	Tournament CW Top Schools 2023				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2023-08-26	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Grobler, R (Reinhart)				Opponent Hayes, C (Carlos)

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	Opperman ,M (Matthew)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
1	Opperman ,M (Matthew)	3	1494.6	1211.3	3	1477.9	1211.3	0	0	0	0	0	0
2	De Waal ,L (Liam)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	De Waal ,L (Liam)	3	1412.7	1554.3	3	1411.8	1554.3	0	0	0	0	0	0
3	Valla ,D (Dante)	3	1.5	0	2	1	0	1	0.5	0	0	0	0
3	Valla ,D (Dante)	3	1421.5	1421.5	2	1407.5	1421.5	1	1287.2	1421.5	0	0	0
4	De Lange ,R (Rhailihn)	3	2	141.7	2	2	425	1	0	-425	0	0	0
4	De Lange ,R (Rhailihn)	3	1264.8	1406.5	2	1247.6	1689.8	1	1221.6	839.8	0	0	0
5	Geyser ,JM (Jacobus Marthinus)	3	0	-425	1	0	-425	2	0	-425	0	0	0
5	Geyser ,JM (Jacobus Marthinus)	3	1276.6	851.6	1	1041.2	851.6	2	1251.5	851.6	0	0	0
6	Mjungu ,L (Lubabalo Emmanuel)	3	1	-141.7	1	1	425	2	0	-425	0	0	0
6	Mjungu ,L (Lubabalo Emmanuel)	3	1239.2	1097.5	1	1234.1	1664.2	2	1183.6	814.2	0	0	0
7	Don ,K (Kyle)	2	2	425	2	2	425	0	0	0	0	0	0
7	Don ,K (Kyle)	2	1312.2	1737.2	2	1252.7	1737.2	0	0	0	0	0	0
8	Grobbelaar ,A (Altus)	2	2	425	1	1	425	1	1	425	0	0	0
8	Grobbelaar ,A (Altus)	2	1179.4	1604.4	1	1251.7	1604.4	1	1149.6	1604.4	0	0	0
9	Solomons ,R (Ruthan)	2	2	425	1	1	425	1	1	425	0	0	0
9	Solomons ,R (Ruthan)	2	1183.4	1608.4	1	1182.4	1608.4	1	1200	1608.4	0	0	0
10	Louw ,W (Walt)	2	1	0	1	0	-425	1	1	425	0	0	0
10	Louw ,W (Walt)	2	1355.1	1355.1	1	1476.3	930.1	1	1200	1780.1	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Wu, J (Jason)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms