Chess South Africa Ratings Database

PLAYER PAGE

Personal

Meyer, D (Dewanio)

Chess SA id

1100153802

FIDE id

Date of birth

2010-12-21 (U16)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

31.9

Junior GPX Points

1188.1

Item	Main	Standard	Rapid	Blitz
Rating	1417.1	1353.8	1469	1200
Raw rating	1417.1	1353.8	1432.5	1200
Weighted rating	1373.4	1326.2	1336.6	1200
Weighted performance	1390.4	1273.7	1469	0
Floor	922.8	856.5	932.5	700
K-factor	32	36	32	36
Min/Max rating change allowed	121.7	133.2	119.1	165.8
Highest rating	1461.9 2024-08-01	1366.5 2024-08-01	1469 2025-09-30	1200 2018-10-01
Highest raw rating	1422.8 2024-09-01	1356.5 2025-04-01	1432.5 2025-09-30	1200 2024-02-01
Highest weighted rating	1373.4 2025-09-30	1326.2 2025-09-30	1336.6 2025-09-30	1200 2018-10-01
Highest weighted performance	1461.9 2025-08-01	1366.5 2024-08-01	1469 2025-09-30	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-0.5	0
New rating	1417.1	1353.8	1468.5	1200
Analysis
Rating	1417.1	1353.8	1469	1200
Raw rating	1417.1	1353.8	1432.5	1200
Weighted rating	1373.4	1326.2	1336.6
Weighted performance	1390.4	1273.7	1469
K-factor	32	36	32	36
Floor	922.8	856.5	932.5	700
Max/Min rating change allowed	121.7	133.2	119.1	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	1417.1	1353.8	1432.5	1200
New weighted rating	1380.1	1331.5	1346.6	1200
New weighted performance	1389.9	1273.2	1468.5	0
Temp new rating	1417.1	1353.8	1468.5	1200
Temp new rating +/-	0	0	-0.5	0
Final new rating +/-	0	0	-0.5	0
New rating	1417.1	1353.8	1468.5	1200
New K-factor	32	36	32	36
New floor	922.8	856.5	932.5	700

Item	Main	Standard	Rapid
	0	0	0
	43	18	25
	52	14	38
	52	9	43
	0	0	0
	0	0	0
History	147	41	106

Games since
	Main 105	Standard 32		Rapid 73		Blitz 0
Gender	Male
Age group	U16
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1987		598		45
Male	1657		480		37
U16	290		93		10
U16 Male	228		69		8
Standard
	RSA		Province		Region
Overall	2522		706		40
Male	2040		525		28
U16	398		128		10
U16 Male	304		89		6
Rapid
	RSA		Province		Region
Overall	293		140		30
Male	268		127		23
U16	49		28		11
U16 Male	42		23		8
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	43	27	62.79	108.7	1326.2	1435
Standard	18	9.5	52.78	23.6	1349	1372.6
Rapid	25	17.5	70	170	1309.8	1479.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	147	83	56.46	54.9	1269.2	1324.1
Standard	41	23	56.1	51.8	1307.3	1359.2
Rapid	106	60	56.6	56.1	1254.5	1310.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1417.1	1353.8	1432.5	1200
2025-09-01	1397.9	1353.8	1389.7	1200
2025-08-01	1407.1	1353.8	1389.6	1200
2025-07-01	1392.1	1353.8	1350.3	1200
2025-06-01	1392.1	1353.8	1350.3	1200
2025-05-01	1392.1	1353.8	1350.3	1200
2025-04-01	1402.1	1356.5	1350.3	1200
2025-03-01	1402.9	1351.6	1350.3	1200
2025-02-01	1385.3	1351.6	1299	1200
2025-01-01	1385.3	1351.6	1299	1200
2024-12-01	1385.3	1351.6	1299	1200
2024-11-01	1397.9	1351.6	1310.9	1200
2024-10-01	1397.9	1351.6	1310.9	1200
2024-09-01	1422.8	1351.6	1327.5	1200
2024-08-01	1318.6	1228.8	1327.5	1200
2024-07-01	1318.6	1228.8	1327.5	1200
2024-06-01	1294.6	1228.8	1296.5	1200
2024-08-01	1224.4	1184.9	1245	1200
2024-04-01	1201.4	1184.9	1204.3	1200
2024-03-01	1201.4	1184.9	1204.3	1200
2024-02-01	1216.3	1184.9	1239.2	1200
2024-01-01	1216.3	1184.9	1239.2	1200
2023-12-01	1216.3	1184.9	1239.2	1200
2023-11-01	1213.2	1184.9	1239.2	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	Basil Ellman Annual Rapid 2025 (Seniors)	2025-09-20	2025-09-20	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U15)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
3	Pedro Booyse Top Schools 2025 (U15)	2025-08-23	2025-08-23	Rapid	West Coast (WCU)	6	6	3	Yes	Analysis
4	Western Cape Women�s Championship 2025 (Sunday Rapid)	2025-08-10	2025-08-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
5	Lower West Coast Top Schools 2025 (U15)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	4	3.5	Yes	Analysis
6	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	2.5	Yes	Analysis
7	West Coast Schools Chess Prestige 2025 (U15 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
8	Lower West Coast Prestige 2025 (U15 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Basil Ellman Annual Rapid 2025 (Seniors)	2025-09-20	2025-09-20	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
2	Western Cape Schools - Top Schools 2025 (U15)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	6	3.5	Yes	Analysis
3	Pedro Booyse Top Schools 2025 (U15)	2025-08-23	2025-08-23	Rapid	West Coast (WCU)	6	6	3	Yes	Analysis
4	Western Cape Women�s Championship 2025 (Sunday Rapid)	2025-08-10	2025-08-10	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
5	Lower West Coast Top Schools 2025 (U15)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	4	3.5	Yes	Analysis
6	Western Cape Schools Individual Championship 2025 (U15 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	2.5	Yes	Analysis
7	West Coast Schools Chess Prestige 2025 (U15 Boys)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
8	Lower West Coast Prestige 2025 (U15 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
9	West Coast Grand Challange League 2024 (HS Development)	2024-10-26	2024-10-26	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
10	The Rooibos Open 2024 (Elite)	2024-08-24	2024-08-24	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
11	Western Cape Women�s Championship 2024 (Intermediate)	2024-08-10	2024-08-10	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
12	Pedro Booyse Top Schools Championships 2024 (U15)	2024-07-20	2024-07-20	Standard	West Coast (WCU)	5	3	3	Yes	Analysis
13	Western Cape - Brian Raubenheimer Development Tournament 2024 (U15 Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
14	Brenton Cupido West Coast Schools Championship 2024 (High School)	2024-05-25	2024-05-25	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
15	West Coast & Mykonos Open 2024 (Open)	2024-05-17	2024-05-19	Standard	West Coast (WCU)	6	6	3.5	Yes	Analysis
16	Lower West Top Schools 2024 (U15)	2024-05-11	2024-05-11	Rapid	West Coast (WCU)	5	2	1	Yes	Analysis
17	Deep Blue Open 2024 (Advanced)	2024-04-13	2024-04-13	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
18	West Coast Schools Chess Prestige Championships 2024 (U15 Boys)	2024-02-24	2024-02-24	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
19	Lower West Coast Schools Chess Prestige 2024 (U15 Boys)	2024-02-17	2024-02-17	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
20	Clanwilliam Chess Club Open 2023 (B)	2023-12-02	2023-12-02	Rapid	West Coast (WCU)	5	5	2.5	Yes	Analysis
21	West Coast Primary Schools Grand Challenge League 2023 (Primary School)	2023-10-21	2023-10-21	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
22	Deep Blue Open 2023 (Advanced)	2023-09-16	2023-09-16	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis
23	CW Top Schools 2023 (Intermediate)	2023-08-12	2023-08-12	Standard	West Coast (WCU)	5	5	3	Yes	Analysis
24	Pedro Booyse Top Schools 2023 (High School)	2023-07-29	2023-07-29	Standard	West Coast (WCU)	5	4	1	Yes	Analysis
25	Youth Day 1 2023 (Open)	2023-06-17	2023-06-17	Rapid	West Coast (WCU)	5	5	1	Yes	Analysis
26	Lower West Coast Top Schools Championships 2023 (High School)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	0	Yes	Analysis
27	St Helenabaai Open 2023 (Open)	2023-05-13	2023-05-13	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
28	West Coast Schools Development Championships 2023 (U13 Boys)	2023-04-22	2023-04-22	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
29	WCCI Open 2023 (B)	2023-04-29	2023-04-29	Rapid	West Coast (WCU)	5	5	4	Yes	Analysis
30	Lower West Coast Primary Schools Prestige Championships 2023 (U13 Boys)	2023-03-04	2023-03-04	Rapid	West Coast (WCU)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	8	Tournament West Coast Grand Challange League 2024				Tournament West Coast Schools Chess Prestige 2025
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Elliott, M (Matayo)				Opponent Fredericks, K (Keaghan)
2	7	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape Women�s Championship 2024
		date 2024-06-08	rnd 6	type Rapid	result 1	date 2024-08-10	rnd 3	type Standard	result 0.5
		Opponent Kiewiet, B (B Jay)				Opponent Cilliers, D (Dene)
3	7	Tournament West Coast & Mykonos Open 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-05-18	rnd 4	type Standard	result 1	date 2024-05-25	rnd 4	type Rapid	result 1
		Opponent Oberholzer, A (Andre)				Opponent Kriel, Z (Zaydon)

#	Games	Start				End
1	9	Tournament West Coast & Mykonos Open 2024				Tournament Western Cape Women�s Championship 2024
		date 2024-05-18	rnd 4	type Standard	result 1	date 2024-08-10	rnd 3	type Standard	result 0.5
		Opponent Oberholzer, A (Andre)				Opponent Cilliers, D (Dene)
2	3	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 3	type Standard	result 1	date 2025-09-07	rnd 5	type Standard	result 1
		Opponent Adams, T (Tyler)				Opponent Jordaan, N (Neveah-Roche)
3	3	Tournament Western Cape Women�s Championship 2024				Tournament West Coast Schools Chess Prestige 2025
		date 2024-08-10	rnd 5	type Standard	result 0.5	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Victor, A (Aj)				Opponent Fredericks, K (Keaghan)

#	Games	Start				End
1	11	Tournament West Coast Grand Challange League 2024				Tournament Western Cape Women�s Championship 2025
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2025-08-10	rnd 1	type Rapid	result 1
		Opponent Elliott, M (Matayo)				Opponent Sibanda, R (Robert)
2	4	Tournament Brenton Cupido West Coast Schools Championship 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-05-25	rnd 1	type Rapid	result 1	date 2024-05-25	rnd 4	type Rapid	result 1
		Opponent Tieling, D (Denilhio)				Opponent Kriel, Z (Zaydon)
3	3	Tournament Basil Ellman Annual Rapid 2025				Tournament Basil Ellman Annual Rapid 2025
		date 2025-09-20	rnd 3	type Rapid	result 1	date 2025-09-20	rnd 5	type Rapid	result 1
		Opponent Maarman, L (Luciano)				Opponent Njokweni, L (Llyabona)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape Women�s Championship 2024
		date 2024-06-08	rnd 6	type Rapid	result 1	date 2024-08-10	rnd 2	type Standard	result 1
		Opponent Kiewiet, B (B Jay)				Opponent Van Der Westhuizen, L (Linli)
2	5	Tournament West Coast & Mykonos Open 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-05-19	rnd 6	type Standard	result 1	date 2024-05-25	rnd 4	type Rapid	result 1
		Opponent Adonis, J (Jermaine)				Opponent Kriel, Z (Zaydon)
3	4	Tournament Lower West Coast Top Schools 2025				Tournament Western Cape Women�s Championship 2025
		date 2025-06-14	rnd 3	type Rapid	result 1	date 2025-08-10	rnd 1	type Rapid	result 1
		Opponent Adams, T (Tyler)				Opponent Sibanda, R (Robert)

#	Games	Start				End
1	6	Tournament West Coast & Mykonos Open 2024				Tournament Western Cape Women�s Championship 2024
		date 2024-05-19	rnd 6	type Standard	result 1	date 2024-08-10	rnd 2	type Standard	result 1
		Opponent Adonis, J (Jermaine)				Opponent Van Der Westhuizen, L (Linli)
2	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-04-27	rnd 6	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Swarts, T (Taloghan)				Opponent Maans, W (Waylen)
3	2	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 1	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Elliott, M (Matayo)				Opponent Fredericks, K (Keaghan)

#	Games	Start				End
1	4	Tournament Lower West Coast Top Schools 2025				Tournament Western Cape Women�s Championship 2025
		date 2025-06-14	rnd 3	type Rapid	result 1	date 2025-08-10	rnd 1	type Rapid	result 1
		Opponent Adams, T (Tyler)				Opponent Sibanda, R (Robert)
2	4	Tournament West Coast Grand Challange League 2024				Tournament Lower West Coast Prestige 2025
		date 2024-10-26	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Elliott, M (Matayo)				Opponent Te Water, Q (Quinico)
3	4	Tournament Brenton Cupido West Coast Schools Championship 2024				Tournament Brenton Cupido West Coast Schools Championship 2024
		date 2024-05-25	rnd 1	type Rapid	result 1	date 2024-05-25	rnd 4	type Rapid	result 1
		Opponent Tieling, D (Denilhio)				Opponent Kriel, Z (Zaydon)

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	Adams ,T (Tyler)	4	3	212.5	1	1	425	3	2	141.7	0	0	0
1	Adams ,T (Tyler)	4	1277.8	1490.3	1	1203.9	1702.8	3	1330.2	1419.5	0	0	0
2	Schroeder ,L (Liam)	3	0	-425	1	0	-425	2	0	-425	0	0	0
2	Schroeder ,L (Liam)	3	1553.3	1128.3	1	1510.6	1128.3	2	1513.2	1128.3	0	0	0
3	Don ,K (Kyle)	3	0	-425	1	0	-425	2	0	-425	0	0	0
3	Don ,K (Kyle)	3	1348.3	923.3	1	1273.8	923.3	2	1328.3	923.3	0	0	0
4	Adonis ,J (Jermaine)	3	1	-141.7	1	1	425	2	0	-425	0	0	0
4	Adonis ,J (Jermaine)	3	1262.5	1120.9	1	1256.5	1687.5	2	1230.4	837.5	0	0	0
5	Tielling ,D (Denielhio)	3	3	425	0	0	0	3	3	425	0	0	0
5	Tielling ,D (Denielhio)	3	1143.5	1568.5	0	0	0	3	1202.1	1568.5	0	0	0
6	Sedeman ,A (Aiden)	3	0	-425	0	0	0	3	0	-425	0	0	0
6	Sedeman ,A (Aiden)	3	1220.2	795.2	0	0	0	3	1244.3	795.2	0	0	0
7	Siebritz ,Y (Yul)	2	0	-425	1	0	-425	1	0	-425	0	0	0
7	Siebritz ,Y (Yul)	2	1349.8	924.8	1	1292.3	924.8	1	1332.2	924.8	0	0	0
8	Basson ,Z (Zanco)	2	0	-425	1	0	-425	1	0	-425	0	0	0
8	Basson ,Z (Zanco)	2	1386.2	961.2	1	1357.7	961.2	1	1349.1	961.2	0	0	0
9	Elliott ,M (Matayo)	2	2	425	1	1	425	1	1	425	0	0	0
9	Elliott ,M (Matayo)	2	1192.6	1617.6	1	1210.1	1617.6	1	1143.1	1617.6	0	0	0
10	Shoshola ,D (Diego)	2	1	0	1	1	425	1	0	-425	0	0	0
10	Shoshola ,D (Diego)	2	1277.4	1277.4	1	1206.4	1702.4	1	1338.4	852.4	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Meyer, D (Dewanio)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms