Chess South Africa Ratings Database

PLAYER PAGE

Personal

Duiker, P (Phillip)

Chess SA id

109093484

FIDE id

Date of birth

2009-12-17 (U18)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-07-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1291.2	1221.5	1381	1180.8
Raw rating	1291.2	1221.5	1381	1180.8
Weighted rating	1288.3	1216.3	1377.2	1180.8
Weighted performance	1032.6	872.4	1099.1	0
Floor	828.2	792.1	881	706
K-factor	36	36	36	36
Min/Max rating change allowed	145.6	160.8	128.1	170.4
Highest rating	1375.3 2023-10-01	1352.3 2018-03-01	1396.2 2024-05-01	1206 2018-05-01
Highest raw rating	1328.2 2022-10-01	1292.1 2022-10-01	1381 2024-06-01	1206 2018-05-01
Highest weighted rating	1328.2 2024-03-01	1292.1 2024-03-01	1372.7 2025-08-01	1206 2018-08-01
Highest weighted performance	1375.3 2023-10-01	1352.3 2018-03-01	1396.2 2024-05-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1291.2	1221.5	1381	1180.8
Analysis
Rating	1291.2	1221.5	1381	1180.8
Raw rating	1291.2	1221.5	1381	1180.8
Weighted rating	1288.3	1216.3	1377.2
Weighted performance	1032.6	872.4	1099.1
K-factor	36	36	36	36
Floor	828.2	792.1	881	706
Max/Min rating change allowed	145.6	160.8	128.1	170.4
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	1291.2	1221.5	1381	1180.8
New weighted rating	1288.2	1216.3	1378.3	1180.8
New weighted performance	1025	865.5	1091	0
Temp new rating	1291.2	1221.5	1381	1180.8
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1291.2	1221.5	1381	1180.8
New K-factor	36	36	36	36
New floor	828.2	792.1	881	706

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	23	9	14	0
	49	31	18	0
	42	32	10	0
	10	0	10	0
History	233	129	85	19

Games since
	Main 23	Standard 9		Rapid 14		Blitz 0
Gender	Male
Age group	U18
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
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	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	229	121	52.84	24.1	1223.3	1247.5
Standard	125	59.5	47.6	-20.4	1229.5	1209.1
Rapid	85	51.5	60.59	90	1235.4	1325.4
Blitz	19	10	52.63	22.4	1128.5	1150.9

Date	Main	Standard	Rapid	Blitz
2025-11-01	1291.2	1221.5	1381	1180.8
2025-09-30	1291.2	1221.5	1381	1180.8
2025-09-01	1291.2	1221.5	1381	1180.8
2025-08-01	1291.2	1221.5	1381	1180.8
2025-07-01	1291.2	1221.5	1381	1180.8
2025-06-01	1291.2	1221.5	1381	1180.8
2025-05-01	1291.2	1221.5	1381	1180.8
2025-04-01	1291.2	1221.5	1381	1180.8
2025-03-01	1291.2	1221.5	1381	1180.8
2025-02-01	1289.9	1220.2	1381	1180.8
2025-01-01	1266.2	1185.8	1381	1180.8
2024-12-01	1266.2	1185.8	1381	1180.8
2024-11-01	1266.2	1185.8	1381	1180.8
2024-10-01	1266.2	1185.8	1381	1180.8
2024-09-01	1266.2	1185.8	1381	1180.8
2024-08-01	1307.4	1226.5	1381	1180.8
2024-07-01	1307.4	1226.5	1381	1180.8
2024-09-01	1307.4	1226.5	1381	1180.8
2024-05-01	1283.6	1226.5	1326.7	1180.8
2024-04-01	1283.6	1226.5	1326.7	1180.8
2024-03-01	1324.2	1266.5	1326.7	1180.8
2024-02-01	1327.4	1266.5	1327.4	1180.8
2024-01-01	1327.4	1266.5	1327.4	1180.8
2023-12-01	1327.4	1266.5	1327.4	1180.8

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	Pedro Booyse Top Schools Championships 2024 (U18)	2024-07-20	2024-07-20	Standard	West Coast (WCU)	6	3	0.5	Yes	Analysis
2	Lower West Top Schools 2024 (U18)	2024-05-11	2024-05-11	Rapid	West Coast (WCU)	5	4	3	Yes	Analysis
3	Western Cape HS Individuals Championship 2024 (U15 Boys)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	1.5	Yes	Analysis
4	West Coast Schools Chess Prestige Championships 2024 (U15 Boys)	2024-02-24	2024-02-24	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
5	Lower West Coast Schools Chess Prestige 2024 (U15 Boys)	2024-02-17	2024-02-17	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
6	West Coast Primary Schools Grand Challenge League 2023 (High School)	2023-10-21	2023-10-21	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
7	Western Cape Top Schools 2023 (U15 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	4	3	Yes	Analysis
8	CW Top Schools 2023 (Advanced)	2023-08-11	2023-08-13	Standard	West Coast (WCU)	6	6	2	Yes	Analysis
9	Pedro Booyse Top Schools 2023 (High School)	2023-07-29	2023-07-29	Standard	West Coast (WCU)	5	4	2	Yes	Analysis
10	West Coast Open 2023 (Elite)	2023-05-20	2023-06-03	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
11	Lower West Coast Top Schools Championships 2023 (High School)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	3	3	Yes	Analysis
12	St Helenabaai Open 2023 (Elite)	2023-05-13	2023-05-13	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
13	Western Cape HS Individuals 2023 (U15 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
14	West Coast High School Championships 2023 (U15 Boys)	2023-02-18	2023-02-18	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
15	Lower West Coast High Schools Prestige 2023 (U15 Boys)	2023-02-11	2023-02-11	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
16	West Coast Open 2022 (Open)	2022-11-05	2022-11-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
17	West Coast Chess Open 2022 (U13 Boys)	2022-10-15	2022-10-15	Rapid	West Coast (WCU)	5	5	2.5	Yes	Analysis
18	Western Cape Top Schools 2022 (U13 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
19	Western Cape Woman`s Championship 2022 (Open)	2022-09-02	2022-09-04	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
20	Pedro Booyse Top Schools 2022 (U13 Open)	2022-07-23	2022-07-23	Standard	West Coast (WCU)	5	4	3	Yes	Analysis
21	Onder-Weskus Top Skole 2022 (O13 Seuns)	2022-06-04	2022-06-04	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
22	Western Cape Schools 2022 (U13 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
23	West Coast Schools Prestige 2022 (U13 Boys)	2022-02-19	2022-02-19	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
24	West Coast Primary Schools Prestige 2021 (U13 Boys)	2021-09-18	2021-09-18	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
25	Lower West Coast Schools Chess Prestige 2021 (U13 Boys)	2021-05-15	2021-05-15	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
26	West Coast Schools Prestige 2020 (U11 Boys)	2020-03-07	2020-03-07	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
27	Onder Weskus Prestige 2020 (U11 Boys)	2020-02-15	2020-02-22	Standard	West Coast (WCU)	6	6	4	Yes	Analysis
28	Back to School Rapid 2020 (Boys)	2020-02-01	2020-02-01	Rapid	West Coast (WCU)	5	5	2.5	Yes	Analysis
29	West Coast Club Champs 2019 (B)	2019-09-13	2019-09-14	Standard	West Coast (WCU)	7	4	1	Yes	Analysis
30	Western Cape Top Schools 2019 (U11 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
31	Weskus Topskole 2019 (U11)	2019-07-20	2019-07-20	Rapid	West Coast (WCU)	5	5	4.5	Yes	Analysis
32	Weskus Mall Rapid 2019 (U10)	2019-07-15	2019-07-15	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
33	West Coast Open 2019 (C)	2019-04-27	2019-04-27	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
34	Weskus Skole Prestige Skaak Kampioenskappe 2019 (O11 Seuns)	2019-03-02	2019-04-06	Standard	West Coast (WCU)	6	6	1.5	Yes	Analysis
35	St Helenabaai Open 2019 (U10)	2019-02-09	2019-02-09	Standard	West Coast (WCU)	5	0	0	No	Analysis
36	Onder-Weskus Skole Proewe 2019 (O11 Seuns)	2019-02-16	2019-02-23	Rapid	West Coast (WCU)	8	8	5	Yes	Analysis
37	Back 2 School 2019 (Blitz)	2019-01-19	2019-01-19	Blitz	West Coast (WCU)	7	7	4	Yes	Analysis
38	Woman`s Month Blitz Tournament 2018 (U10+U12)	2018-08-11	2018-08-11	Blitz	West Coast (WCU)	5	5	2	Yes	Analysis
39	Western Cape Top Schools 2018 (U7+U9 Mix)	2018-08-25	2018-08-26	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
40	Basil Ellman Tournament 2018 (U10+U12)	2018-06-16	2018-06-16	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
41	Western Cape Schools Individuals 2018 (U9 Boys)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	2	Yes	Analysis
42	West Coast Open 2018 (C)	2018-04-28	2018-04-28	Standard	West Coast (WCU)	5	5	2	Yes	Analysis
43	Freedom Day Blitz 2018 (Men)	2018-04-27	2018-04-27	Blitz	West Coast (WCU)	7	7	4	Yes	Analysis
44	Development Tournament 2018	2018-04-04	2018-04-04	Standard	West Coast (WCU)	5	5	1.5	Yes	Analysis
45	West Coast Schools Prestige Individual Championship 2018 (U9 Boys)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	6	4	Yes	Analysis

#	Games	Start				End
1	6	Tournament Weskus Topskole 2019				Tournament Western Cape Top Schools 2019
		date 2019-07-20	rnd 1	type Rapid	result 1	date 2019-08-31	rnd 1	type Standard	result 1
		Opponent Booysen, W (Wilnique)				Opponent De Klerk, D (David)
2	4	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Johnson, D (Deomanthy)				Opponent Brink, A (Antonio)
3	4	Tournament Lower West Coast Top Schools Championships 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-06-10	rnd 1	type Rapid	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent De Bruin, M (Matthew)				Opponent Shabangu, L (Lusanda)

#	Games	Start				End
1	5	Tournament Onder Weskus Prestige 2020				Tournament West Coast Schools Prestige 2022
		date 2020-02-22	rnd 5	type Standard	result 1	date 2022-02-19	rnd 3	type Standard	result 1
		Opponent Naidoo, J (Joshua)				Opponent Don, K (Kyle)
2	4	Tournament West Coast Open 2022				Tournament West Coast High School Championships 2023
		date 2022-11-05	rnd 5	type Standard	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Warner, A (Alicia)				Opponent Gentles, A (Abrain)
3	4	Tournament Pedro Booyse Top Schools 2022				Tournament Western Cape Woman`s Championship 2022
		date 2022-07-23	rnd 3	type Standard	result 1	date 2022-09-02	rnd 1	type Standard	result 1
		Opponent Ndumndum, E (Eyabo)				Opponent Rooi, J (Josh-Lee)

#	Games	Start				End
1	6	Tournament Weskus Topskole 2019				Tournament Back to School Rapid 2020
		date 2019-07-20	rnd 1	type Rapid	result 1	date 2020-02-01	rnd 1	type Rapid	result 1
		Opponent Booysen, W (Wilnique)				Opponent Pienaar, S (Stian)
2	5	Tournament Onder-Weskus Top Skole 2022				Tournament West Coast Chess Open 2022
		date 2022-06-04	rnd 3	type Rapid	result 1	date 2022-10-15	rnd 2	type Rapid	result 0.5
		Opponent Wearing, G (Garth)				Opponent Siebritz, Y (Yul)
3	4	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Johnson, D (Deomanthy)				Opponent Brink, A (Antonio)

#	Games	Start				End
1	3	Tournament Back 2 School 2019				Tournament Back 2 School 2019
		date 2019-01-19	rnd 2	type Blitz	result 1	date 2019-01-19	rnd 4	type Blitz	result 1
		Opponent Cosana, S (Sephesihle)				Opponent Owies, L (Lehanna)
2	3	Tournament Freedom Day Blitz 2018				Tournament Woman`s Month Blitz Tournament 2018
		date 2018-04-27	rnd 6	type Blitz	result 1	date 2018-08-11	rnd 1	type Blitz	result 1
		Opponent Williams, I (Ivan)				Opponent Roman, H (Hubert)
3	1	Tournament Back 2 School 2019				Tournament Back 2 School 2019
		date 2019-01-19	rnd 7	type Blitz	result 1	date 2019-01-19	rnd 7	type Blitz	result 1
		Opponent Julies, A (Alkeeno)				Opponent Julies, A (Alkeeno)

#	Games	Start				End
1	4	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Johnson, D (Deomanthy)				Opponent Brink, A (Antonio)
2	4	Tournament Lower West Coast Top Schools Championships 2023				Tournament Pedro Booyse Top Schools 2023
		date 2023-06-10	rnd 1	type Rapid	result 1	date 2023-07-29	rnd 1	type Standard	result 1
		Opponent De Bruin, M (Matthew)				Opponent Shabangu, L (Lusanda)
3	4	Tournament West Coast Open 2022				Tournament Lower West Coast High Schools Prestige 2023
		date 2022-11-05	rnd 5	type Standard	result 1	date 2023-02-11	rnd 2	type Rapid	result 1
		Opponent Warner, A (Alicia)				Opponent Conzalves, D (Damian)

#	Games	Start				End
1	5	Tournament Onder Weskus Prestige 2020				Tournament West Coast Schools Prestige 2022
		date 2020-02-22	rnd 5	type Standard	result 1	date 2022-02-19	rnd 3	type Standard	result 1
		Opponent Naidoo, J (Joshua)				Opponent Don, K (Kyle)
2	4	Tournament West Coast Open 2022				Tournament West Coast High School Championships 2023
		date 2022-11-05	rnd 5	type Standard	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Warner, A (Alicia)				Opponent Gentles, A (Abrain)
3	4	Tournament Pedro Booyse Top Schools 2022				Tournament Western Cape Woman`s Championship 2022
		date 2022-07-23	rnd 3	type Standard	result 1	date 2022-09-02	rnd 1	type Standard	result 1
		Opponent Ndumndum, E (Eyabo)				Opponent Rooi, J (Josh-Lee)

#	Games	Start				End
1	4	Tournament West Coast Primary Schools Grand Challenge League 2023				Tournament Lower West Coast Schools Chess Prestige 2024
		date 2023-10-21	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 1	type Rapid	result 1
		Opponent Johnson, D (Deomanthy)				Opponent Brink, A (Antonio)
2	4	Tournament Lower West Coast Top Schools Championships 2023				Tournament West Coast Primary Schools Grand Challenge League 2023
		date 2023-06-10	rnd 1	type Rapid	result 1	date 2023-10-21	rnd 1	type Rapid	result 1
		Opponent De Bruin, M (Matthew)				Opponent Breytenbach, T (Tristan)
3	4	Tournament Onder-Weskus Top Skole 2022				Tournament West Coast Chess Open 2022
		date 2022-06-04	rnd 3	type Rapid	result 1	date 2022-10-15	rnd 1	type Rapid	result 1
		Opponent Wearing, G (Garth)				Opponent Adams, J (Jenito)

#	Games	Start				End
1	3	Tournament Back 2 School 2019				Tournament Back 2 School 2019
		date 2019-01-19	rnd 2	type Blitz	result 1	date 2019-01-19	rnd 4	type Blitz	result 1
		Opponent Cosana, S (Sephesihle)				Opponent Owies, L (Lehanna)
2	3	Tournament Freedom Day Blitz 2018				Tournament Woman`s Month Blitz Tournament 2018
		date 2018-04-27	rnd 6	type Blitz	result 1	date 2018-08-11	rnd 1	type Blitz	result 1
		Opponent Williams, I (Ivan)				Opponent Roman, H (Hubert)
3	1	Tournament Back 2 School 2019				Tournament Back 2 School 2019
		date 2019-01-19	rnd 7	type Blitz	result 1	date 2019-01-19	rnd 7	type Blitz	result 1
		Opponent Julies, A (Alkeeno)				Opponent Julies, A (Alkeeno)

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	Schroeder ,L (Liam)	6	0	-425	2	0	-425	4	0	-425	0	0	0
1	Schroeder ,L (Liam)	6	1473.2	1048.2	2	1464.8	1048.2	4	1353.3	1048.2	0	0	0
2	Visagie ,C (Christopher)	5	2	-85	3	1	-141.7	2	1	0	0	0	0
2	Visagie ,C (Christopher)	5	1294	1209	3	1214.9	1152.3	2	1278.9	1294	0	0	0
3	Huysamen ,A (Albertus)	4	3	212.5	3	2	141.7	1	1	425	0	0	0
3	Huysamen ,A (Albertus)	4	1226.2	1438.7	3	1201	1367.9	1	1274.6	1651.2	0	0	0
4	Kameel ,L (Lindon)	4	1	-212.5	3	1	-141.7	1	0	-425	0	0	0
4	Kameel ,L (Lindon)	4	1350.2	1137.7	3	1344.8	1208.6	1	1258.4	925.2	0	0	0
5	Davids ,C (Cleverton)	4	2	0	1	0	-425	3	2	141.7	0	0	0
5	Davids ,C (Cleverton)	4	1236.6	1236.6	1	1157.9	811.6	3	1242.2	1378.3	0	0	0
6	Opperman ,M (Matthew)	4	0	-425	1	0	-425	3	0	-425	0	0	0
6	Opperman ,M (Matthew)	4	1500.6	1075.6	1	1541.2	1075.6	3	1327.3	1075.6	0	0	0
7	Fielies ,J (Jaden)	3	2	141.7	2	1	0	1	1	425	0	0	0
7	Fielies ,J (Jaden)	3	1181.6	1323.2	2	1131.6	1181.6	1	1200	1606.6	0	0	0
8	Arendse ,Q (Quinwinne)	3	0	-425	2	0	-425	1	0	-425	0	0	0
8	Arendse ,Q (Quinwinne)	3	1342.5	917.5	2	1329.4	917.5	1	1372.1	917.5	0	0	0
9	Ocks ,K (Keano)	3	0	-425	2	0	-425	1	0	-425	0	0	0
9	Ocks ,K (Keano)	3	1250.9	825.9	2	1240	825.9	1	1200	825.9	0	0	0
10	Siebritz ,Y (Yul)	3	1.5	0	2	1	0	1	0.5	0	0	0	0
10	Siebritz ,Y (Yul)	3	1285.1	1285.1	2	1258.6	1285.1	1	1179.7	1285.1	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Duiker, P (Phillip)

Ratings

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Last 24 raw ratings

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Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms