Chess South Africa Ratings Database

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Personal

Koert, D (Dane)

Chess SA id

1130139482

FIDE id

Date of birth

2013-12-06 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

31.3

Junior GPX Points

1307.7

Item	Main	Standard	Rapid	Blitz
Rating	1400.5	1413.8	1311.9	1200
Raw rating	1388.1	1413.8	1290.8	1200
Weighted rating	1400.5	1398.9	1311.9	1200
Weighted performance	1264.2	1320.9	1043.8	0
Floor	952.7	943.4	902.8	700
K-factor	32	32	32	36
Min/Max rating change allowed	126.8	122.3	145.7	165.8
Highest rating	1467.9 2022-11-01	1458.5 2022-11-01	1417.2 2024-02-01	1200 2018-10-01
Highest raw rating	1452.7 2022-12-01	1443.4 2022-12-01	1402.8 2024-03-01	1200 2024-02-01
Highest weighted rating	1400.9 2025-08-01	1392.9 2025-08-01	1402.8 2025-03-01	1200 2018-10-01
Highest weighted performance	1467.9 2022-11-01	1458.5 2022-11-01	1417.2 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.2	0	-2.5	0
New rating	1400.3	1413.8	1309.4	1200
Analysis
Rating	1400.5	1413.8	1311.9	1200
Raw rating	1388.1	1413.8	1290.8	1200
Weighted rating	1400.5	1398.9	1311.9
Weighted performance	1264.2	1320.9	1043.8
K-factor	32	32	32	36
Floor	952.7	943.4	902.8	700
Max/Min rating change allowed	126.8	122.3	145.7	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	1388.1	1413.8	1290.8	1200
New weighted rating	1400.3	1401.6	1309.4	1200
New weighted performance	1263.7	1320.4	1043.4	0
Temp new rating	1400.3	1413.8	1309.4	1200
Temp new rating +/-	-0.2	0	-2.5	0
Final new rating +/-	-0.2	0	-2.5	0
New rating	1400.3	1413.8	1309.4	1200
New K-factor	32	32	32	36
New floor	952.7	943.4	902.8	700

Item	Main	Standard	Rapid
	0	0	0
	32	22	10
	36	20	16
	57	35	22
	53	40	13
	0	0	0
History	178	117	61

Games since
	Main 88	Standard 51		Rapid 37		Blitz 0
Gender	Male
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2158		662		102
Male	1777		517		77
U14	341		111		16
U14 Male	255		74		11
Standard
	RSA		Province		Region
Overall	1913		520		73
Male	1572		403		55
U14	312		97		13
U14 Male	232		65		7
Rapid
	RSA		Province		Region
Overall	976		503		83
Male	800		404		60
U14	211		115		22
U14 Male	154		83		14
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	32	18	56.25	53.1	1308.8	1361.9
Standard	22	14	63.64	115.9	1313.2	1429.2
Rapid	10	4	40	-85	1299	1214
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	178	103.5	58.15	69.2	1283.8	1353.1
Standard	117	70.5	60.26	87.2	1289.7	1376.8
Rapid	61	33	54.1	34.8	1272.7	1307.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1388.1	1413.8	1290.8	1200
2025-09-01	1388.1	1413.8	1290.8	1200
2025-08-01	1413.9	1413.8	1317	1200
2025-07-01	1413.9	1413.8	1317	1200
2025-06-01	1413.9	1413.8	1316.9	1200
2025-05-01	1425.9	1437.6	1316.5	1200
2025-04-01	1425.9	1437.6	1314.9	1200
2025-03-01	1414.6	1404.2	1315.5	1200
2025-02-01	1427	1420.9	1313.8	1200
2025-01-01	1423.4	1419.8	1300.1	1200
2024-12-01	1423.4	1419.8	1300.1	1200
2024-11-01	1423.4	1419.8	1300.1	1200
2024-10-01	1375.9	1367.3	1300.1	1200
2024-09-01	1375.9	1367.3	1300.1	1200
2024-08-01	1338.2	1326.3	1300.1	1200
2024-07-01	1338.2	1326.3	1300.1	1200
2024-06-01	1355.5	1326.3	1338.5	1200
2024-08-01	1379.4	1354.1	1338.5	1200
2024-04-01	1379.4	1354.1	1338.5	1200
2024-03-01	1386.1	1321.1	1402.8	1200
2024-02-01	1360.5	1321.1	1352.4	1200
2024-01-01	1360.5	1321.1	1352.4	1200
2023-12-01	1360.5	1321.1	1352.4	1200
2023-11-01	1396.1	1368.8	1352.4	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	De Villiers PS 2025 (U14+High School Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U13 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
3	Steinitz Festival 2025 (Open)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	4	1	Yes	Analysis
4	Steinitz Festival 2025 (U14)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	1	1	Yes	Analysis
5	Cape Winelands Schools Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
6	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	Marie Delport Memorial 2025 (U14 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	De Villiers PS 2025 (U14+High School Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U13 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
3	Steinitz Festival 2025 (Open)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	4	1	Yes	Analysis
4	Steinitz Festival 2025 (U14)	2025-03-15	2025-03-15	Rapid	Cape Town (WCT)	7	1	1	Yes	Analysis
5	Cape Winelands Schools Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
6	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	Marie Delport Memorial 2025 (U14 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
8	Strategema Chess October 2024 (U11)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
9	De Villiers PS Tournament 2024 (U14)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
10	Western Cape - Kings and Queens 2024 (Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	5	4	1	Yes	Analysis
11	Western Cape PS Individuals Championship 2024 (U11 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	5	2	Yes	Analysis
12	Cape Town Open Rapid Chess Championship 2024 (U12)	2024-03-16	2024-03-16	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
13	Cape Winelands Schools - Prestige 2024 (U11 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
14	Cape Winelands Schools - PS Trials 1 2024 (U11 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
15	2023 Western Cape Rural Cup (U12)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	0	Yes	Analysis
16	Ashton Skaakmat Rapid 2023 (U11)	2023-11-18	2023-11-18	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
17	Robertson Chess Tournament Oct 2023 (U11)	2023-10-28	2023-10-28	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
18	Bonnievale Open Rapid 2023 (U12)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	5	3	Yes	Analysis
19	Cape Town Junior Chess League Finals 2023 (U12B)	2023-09-16	2023-09-16	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
20	Cape Winelands Open 2023 (U12)	2023-07-23	2023-07-23	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
21	Western Cape PS Individuals 2023 (U11 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
22	Strategema 2023 (U11+U13)	2023-05-13	2023-05-13	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
23	Cape Winelands Schools Prestige 2023 (U11 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
24	Langeberg Schools Chess Trials 2023 (U11 Open)	2023-02-11	2023-02-11	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
25	Cape Winelands Schools Chess - Trials 1 2023 (U11 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
26	CW Grass Roots Tournament 2022 (U9 Boys)	2022-11-19	2022-11-19	Standard	Cape Winelands (WCW)	6	6	5.5	Yes	Analysis
27	Robertson Strategema Club 2022 (U11)	2022-10-29	2022-10-29	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
28	Western Cape Closed Championship 2022 (U10)	2022-09-24	2022-09-24	Standard	Cape Winelands (WCW)	5	4	1	Yes	Analysis
29	Strategema 2022 (U11)	2022-09-10	2022-09-10	Standard	Cape Winelands (WCW)	5	4	4	Yes	Analysis
30	Brave Knights Chess Festival 2022 (B)	2022-07-30	2022-07-30	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
31	Langeberg Open 2022 (Sandard)	2022-06-25	2022-06-25	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
32	Western Cape Schools 2022 (U9 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis
33	Strategema Chess Festival 2022 (U7+U9 Girls)	2022-05-14	2022-05-14	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
34	McGregor Chess Freedom Day Rapid 2022 (U7+U9)	2022-04-27	2022-04-27	Rapid	Cape Winelands (WCW)	3	3	1	Yes	Analysis
35	McGregor Kings Chess Festival 2022 (U7+U9)	2022-04-09	2022-04-09	Rapid	Cape Winelands (WCW)	5	5	3	Yes	Analysis
36	Cape Winelands Schools 2022 (U9 Boys)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	13	Tournament De Villiers PS Tournament 2024				Tournament Marie Delport Memorial 2025
		date 2024-08-17	rnd 1	type Standard	result 0.5	date 2025-01-25	rnd 3	type Standard	result 1
		Opponent Venter, D (Danelize)				Opponent Pieterse, J (Jemille)
2	8	Tournament Brave Knights Chess Festival 2022				Tournament Strategema 2022
		date 2022-07-30	rnd 2	type Standard	result 1	date 2022-09-10	rnd 5	type Standard	result 1
		Opponent Jacobs, C (Chad)				Opponent Mohammed, H (Hamza)
3	7	Tournament CW Grass Roots Tournament 2022				Tournament Langeberg Schools Chess Trials 2023
		date 2022-11-19	rnd 1	type Standard	result 1	date 2023-02-11	rnd 1	type Rapid	result 1
		Opponent Terblanche, S (Stefan)				Opponent Daniels, D (Daywin)

#	Games	Start				End
1	15	Tournament Western Cape PS Individuals Championship 2024				Tournament Marie Delport Memorial 2025
		date 2024-05-05	rnd 5	type Standard	result 0.5	date 2025-01-25	rnd 3	type Standard	result 1
		Opponent Barron, D (Dorian)				Opponent Pieterse, J (Jemille)
2	8	Tournament Brave Knights Chess Festival 2022				Tournament Strategema 2022
		date 2022-07-30	rnd 2	type Standard	result 1	date 2022-09-10	rnd 5	type Standard	result 1
		Opponent Jacobs, C (Chad)				Opponent Mohammed, H (Hamza)
3	7	Tournament CW Grass Roots Tournament 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-11-19	rnd 1	type Standard	result 1	date 2023-02-18	rnd 1	type Standard	result 1
		Opponent Terblanche, S (Stefan)				Opponent Daniels, D (Daywin)

#	Games	Start				End
1	5	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Van Der Westhuizen, E (Erik)				Opponent Pearce, D (Daniel)
2	5	Tournament Cape Town Junior Chess League Finals 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-09-16	rnd 4	type Rapid	result 1	date 2023-10-21	rnd 3	type Rapid	result 0.5
		Opponent Memani, M (Mpho)				Opponent Cilliers, D (Dene)
3	4	Tournament Bonnievale Open Rapid 2023				Tournament Ashton Skaakmat Rapid 2023
		date 2023-10-21	rnd 5	type Rapid	result 0.5	date 2023-11-18	rnd 2	type Rapid	result 1
		Opponent Joel, R (Roneeq)				Opponent Buys, L (Louwen)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Brave Knights Chess Festival 2022				Tournament Strategema 2022
		date 2022-07-30	rnd 2	type Standard	result 1	date 2022-09-10	rnd 5	type Standard	result 1
		Opponent Jacobs, C (Chad)				Opponent Mohammed, H (Hamza)
2	5	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Van Der Westhuizen, E (Erik)				Opponent Pearce, D (Daniel)
3	5	Tournament Strategema 2023				Tournament Strategema 2023
		date 2023-05-13	rnd 1	type Standard	result 1	date 2023-05-13	rnd 5	type Standard	result 1
		Opponent Coetzee, C (Carli)				Opponent Visser, K (Katie)

#	Games	Start				End
1	8	Tournament Brave Knights Chess Festival 2022				Tournament Strategema 2022
		date 2022-07-30	rnd 2	type Standard	result 1	date 2022-09-10	rnd 5	type Standard	result 1
		Opponent Jacobs, C (Chad)				Opponent Mohammed, H (Hamza)
2	5	Tournament Cape Winelands Open 2023				Tournament Robertson Chess Tournament Oct 2023
		date 2023-07-23	rnd 3	type Standard	result 1	date 2023-10-28	rnd 2	type Standard	result 1
		Opponent Van Der Westhuizen, L (Linli)				Opponent Van Der Westhuizen, L (Linli)
3	5	Tournament Strategema 2023				Tournament Strategema 2023
		date 2023-05-13	rnd 1	type Standard	result 1	date 2023-05-13	rnd 5	type Standard	result 1
		Opponent Coetzee, C (Carli)				Opponent Visser, K (Katie)

#	Games	Start				End
1	5	Tournament Cape Winelands Schools - PS Trials 1 2024				Tournament Cape Winelands Schools - PS Trials 1 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 5	type Rapid	result 1
		Opponent Van Der Westhuizen, E (Erik)				Opponent Pearce, D (Daniel)
2	4	Tournament Cape Town Junior Chess League Finals 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-09-16	rnd 4	type Rapid	result 1	date 2023-10-21	rnd 2	type Rapid	result 1
		Opponent Memani, M (Mpho)				Opponent Jansen, J (Jaydon)
3	3	Tournament Bonnievale Open Rapid 2023				Tournament Ashton Skaakmat Rapid 2023
		date 2023-10-21	rnd 6	type Rapid	result 1	date 2023-11-18	rnd 2	type Rapid	result 1
		Opponent Temmers, L (Luke)				Opponent Buys, L (Louwen)

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	Barends ,R (Reece)	9	2.5	-188.9	5	1.5	-170	4	1	-212.5	0	0	0
1	Barends ,R (Reece)	9	1336.4	1147.5	5	1350.7	1166.4	4	1277.6	1123.9	0	0	0
2	Von Wielligh ,S (Sven)	6	4	141.7	3	3	425	3	1	-141.7	0	0	0
2	Von Wielligh ,S (Sven)	6	1235.9	1377.6	3	1240.1	1660.9	3	1221.5	1094.3	0	0	0
3	Krynauw ,E (Eben)	5	4.5	340	4	3.5	318.8	1	1	425	0	0	0
3	Krynauw ,E (Eben)	5	1326.8	1666.8	4	1297.3	1645.6	1	1264.1	1751.8	0	0	0
4	Kuypers ,P (Parker)	4	0	-425	3	0	-425	1	0	-425	0	0	0
4	Kuypers ,P (Parker)	4	1407.6	982.6	3	1330	982.6	1	1468.8	982.6	0	0	0
5	Klopper ,E (Elzaan)	4	1.5	-106.2	3	1.5	0	1	0	-425	0	0	0
5	Klopper ,E (Elzaan)	4	1391.7	1285.4	3	1364.9	1391.7	1	1339.4	966.7	0	0	0
6	Robertson ,J (Jonah)	4	0	-425	2	0	-425	2	0	-425	0	0	0
6	Robertson ,J (Jonah)	4	1562.9	1137.9	2	1529.9	1137.9	2	1543	1137.9	0	0	0
7	Robertson ,M (Marvin)	4	3	212.5	2	2	425	2	1	0	0	0	0
7	Robertson ,M (Marvin)	4	1331.9	1544.4	2	1349.2	1756.9	2	1254.8	1331.9	0	0	0
8	Van Tonder ,L (Luhann)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
8	Van Tonder ,L (Luhann)	3	1339.3	1197.6	3	1345.5	1197.6	0	0	0	0	0	0
9	De Koker ,L (Lloyd)	3	3	425	3	3	425	0	0	0	0	0	0
9	De Koker ,L (Lloyd)	3	1229.3	1654.3	3	1235.7	1654.3	0	0	0	0	0	0
10	Holmes ,M (Matthew)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
10	Holmes ,M (Matthew)	3	1283.1	1141.5	3	1277.7	1141.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Koert, D (Dane)

Ratings

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Last 24 raw ratings

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Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms