Chess South Africa Ratings Database

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Personal

Van Der Merwe, D (Devan)

Chess SA id

1090100229

FIDE id

14366207

Date of birth

2009-03-26 (U18)

Gender

Male

Region

Dr Kenneth Kaunda (NWP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1504.7	1502.7	1203.2	1200
Raw rating	1495.3	1495.6	1203.2	1200
Weighted rating	1429.7	1429.9	1203.2	1200
Weighted performance	1504.7	1502.7	0	0
Floor	995.3	995.6	703.2	700
K-factor	32	32	36	36
Min/Max rating change allowed	108.9	108.8	165.1	165.8
Highest rating	1636.4 2018-04-01	1636.5 2018-04-01	1203.2 2024-02-01	1200 2018-10-01
Highest raw rating	1495.3 2026-01-01	1495.6 2026-01-01	1203.2 2024-02-01	1200 2024-02-01
Highest weighted rating	1429.7 2026-01-01	1429.9 2026-01-01	1203.2 2024-02-01	1200 2018-10-01
Highest weighted performance	1636.4 2018-04-01	1636.5 2018-04-01	1200 2018-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-9.4	-7.1	0	0
New rating	1495.3	1495.6	1203.2	1200
Analysis
Rating	1504.7	1502.7	1203.2	1200
Raw rating	1495.3	1495.6	1203.2	1200
Weighted rating	1429.7	1429.9	1203.2
Weighted performance	1504.7	1502.7	0
K-factor	32	32	36	36
Floor	995.3	995.6	703.2	700
Max/Min rating change allowed	108.9	108.8	165.1	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	1495.3	1495.6	1203.2	1200
New weighted rating	1436.2	1436.6	1203.2	1200
New weighted performance	1494.8	1492.8	0	0
Temp new rating	1495.3	1495.6	1203.2	1200
Temp new rating +/-	-9.4	-7.1	0	0
Final new rating +/-	-9.4	-7.1	0	0
New rating	1495.3	1495.6	1203.2	1200
New K-factor	32	32	36	36
New floor	995.3	995.6	703.2	700

Item	Main	Standard	Rapid
	0	0	0
	20	20	0
	39	39	0
	28	28	0
	26	26	0
	19	19	0
History	195	190	5

Games since
	Main 59	Standard 59		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Dr Kenneth Kaunda (NWP)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	1563		125		20
Male	1311		104		15
U18	249		22		4
U18 Male	220		17		2
Standard
	RSA		Province		Region
Overall	1427		128		21
Male	1199		106		16
U18	226		20		4
U18 Male	198		15		2
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	20	15.5	77.5	233.8	1267.8	1501.5
Standard	20	15.5	77.5	233.8	1267.8	1501.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	195	120.5	61.79	100.3	1187.6	1287.8
Standard	190	117.5	61.84	100.7	1190.9	1291.5
Rapid	5	3	60	85	1062.7	1147.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1495.3	1495.6	1203.2	1200
2025-11-30	1463.5	1470.9	1203.2	1200
2025-11-01	1463.5	1470.9	1203.2	1200
2025-09-30	1463.5	1470.9	1203.2	1200
2025-09-01	1457.1	1464.2	1203.2	1200
2025-08-01	1416.4	1414.3	1203.2	1200
2025-07-01	1416.4	1414.3	1203.2	1200
2025-06-01	1416.4	1414.3	1203.2	1200
2025-05-01	1416.4	1414.3	1203.2	1200
2025-04-01	1422.7	1420.8	1203.2	1200
2025-03-01	1422.7	1420.8	1203.2	1200
2025-02-01	1418.9	1416	1203.2	1200
2025-01-01	1418.9	1416	1203.2	1200
2024-12-01	1377.8	1372.5	1203.2	1200
2024-11-01	1377.8	1372.5	1203.2	1200
2024-10-01	1382.8	1377.3	1203.2	1200
2024-09-01	1410.4	1412.5	1203.2	1200
2024-11-01	1396.6	1394.3	1203.2	1200
2024-07-01	1396.6	1394.3	1203.2	1200
2024-06-01	1368.2	1358.1	1203.2	1200
2024-05-01	1368.2	1358.1	1203.2	1200
2024-04-01	1368.2	1358.1	1203.2	1200
2024-03-01	1390.8	1385	1203.2	1200
2024-02-01	1401.4	1396.8	1203.2	1200

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	2025 Mzansi Individual Championships (U18 Open)	2025-12-17	2025-12-20	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
2	2025 Mzansi Inter Provincial Team Championships (U18 Open)	2025-12-15	2025-12-17	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
3	Gauteng Inter-Region at Emerald Resort 2025 (U18 Championship)	2025-12-06	2025-12-07	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
4	Dr KK Regional Trials 2025 (U18)	2025-09-06	2025-09-06	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
5	Ashton John 2025 (Open)	2025-08-23	2025-08-23	Standard	Dr Kenneth Kaunda (NWP)	5	0	0	No	Analysis
6	Knight Shift Open Chess Tournament 2025 (U18)	2025-08-02	2025-08-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	5	Yes	Analysis
7	CURRO Tournament 2025 (U18)	2025-04-12	2025-04-12	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
8	DR KK Volkies 2025 (U16)	2025-02-01	2025-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	3.5	Yes	Analysis
9	Gauteng Inter-Region at UJ 2024 (U16 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	4	3.5	Yes	Analysis
10	DR KKD Trails 2 2024 (U16)	2024-10-12	2024-10-12	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
11	2024 South Africa National Schools Chess Championship (U15 Boys)	2024-09-27	2024-09-28	Standard	Nelson Mandela Bay (ENM)	7	6	2.5	Yes	Analysis
12	North West Schools Finals 2024 (U15 Boys)	2024-08-24	2024-08-24	Standard	Ngaka Modiri Molema (NNM)	5	5	3.5	Yes	Analysis
13	DR KKD Saamtrek 2024 (U16)	2024-06-08	2024-06-08	Standard	Dr Kenneth Kaunda (NWP)	5	5	4.5	Yes	Analysis
14	DR KKD Ferdies Mar 2024 (B)	2024-03-02	2024-03-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
15	DR KKD Curro Feb 2024 (U16)	2024-02-10	2024-02-10	Standard	Dr Kenneth Kaunda (NWP)	5	4	2.5	Yes	Analysis
16	2024 Gauteng Inter-Region Chess Championship (U16B)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
17	DR KKD Trials 2023 (U16)	2023-09-02	2023-09-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
18	2023 Thomas Lechelele North West Open (B)	2023-09-15	2023-09-16	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
19	DR Kenneth Kaunda Volkies 29 Jul 2023 (B)	2023-07-29	2023-07-29	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
20	Dr Kenneth Kaunda Volkies 2023 (C)	2023-06-10	2023-06-10	Standard	Dr Kenneth Kaunda (NWP)	5	5	3.5	Yes	Analysis
21	DR Kenneth Kaunda Curro 2023 (C)	2023-04-22	2023-04-22	Standard	Dr Kenneth Kaunda (NWP)	5	5	5	Yes	Analysis
22	Dr. Kenneth Kaunda Saamtrek 2023 (U16)	2023-02-04	2023-02-04	Standard	Dr Kenneth Kaunda (NWP)	5	4	3	Yes	Analysis
23	2022 South African Junior Team Chess Championships (U16 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	7	3	Yes	Analysis
24	Dr. KKD SAJCC Trials September 2022 (U12+U14)	2022-09-03	2022-09-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
25	Dr. KKD Volkskool 2022 (U14)	2022-08-20	2022-08-20	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
26	Bailie Park Potchefstroom 2022 (U14+U16)	2022-06-04	2022-06-04	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
27	Schoonspruit Ope 2022 (C)	2022-05-21	2022-05-21	Standard	Dr Kenneth Kaunda (NWP)	5	4	1.5	Yes	Analysis
28	Volkskool Proewe 2021 (U14)	2021-10-30	2021-10-30	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
29	Volkskool Tournament 2021 (U14)	2021-06-26	2021-06-26	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
30	Saamtrek 2021 (U14)	2021-06-12	2021-06-12	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
31	KHS 2021 (B)	2021-04-10	2021-04-10	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
32	Wesvalia 2020 (C)	2020-02-15	2020-02-15	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
33	Gimnasium 2020 (U12)	2020-02-01	2020-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
34	2019 South African Junior Team Championships (U12D)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	5	Yes	Analysis
35	Matlosana Mall 2019 (C)	2019-10-04	2019-10-04	Standard	Dr Kenneth Kaunda (NWP)	5	4	3	Yes	Analysis
36	Doringkruin 2019 (U12)	2019-09-07	2019-09-07	Standard	Dr Kenneth Kaunda (NWP)	5	5	1	Yes	Analysis
37	Boys + Girls Tournament 2019 (U12)	2019-08-17	2019-08-17	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
38	Proewe 2019 (U12)	2019-08-03	2019-08-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
39	Doringkruin 2019 (U12)	2019-06-08	2019-06-08	Standard	Dr Kenneth Kaunda (NWP)	5	3	1	Yes	Analysis
40	Volkies 2019 (C)	2019-05-11	2019-05-11	Standard	Dr Kenneth Kaunda (NWP)	5	4	2	Yes	Analysis
41	Strathvaal 2019 (U12)	2019-04-13	2019-03-13	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
42	Matlosana Mall 2018 (U10)	2018-10-20	2018-10-20	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
43	2018 Super 12 (Junior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	3	Yes	Analysis
44	Hervormde Kerk 2018 (Beginners)	2018-04-21	2018-04-21	Standard	Dr Kenneth Kaunda (NWP)	5	5	5	Yes	Analysis

#	Games	Start				End
1	9	Tournament DR KKD Ferdies Mar 2024				Tournament North West Schools Finals 2024
		date 2024-03-02	rnd 5	type Standard	result 0.5	date 2024-08-24	rnd 3	type Standard	result 0.5
		Opponent Muller, C (Christiaan)				Opponent Zanazo, K (Kopano)
2	8	Tournament CURRO Tournament 2025				Tournament Dr KK Regional Trials 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-09-06	rnd 2	type Standard	result 1
		Opponent Ackerman, C (Conner)				Opponent Mpopoma, A (Angel)
3	7	Tournament DR KK Volkies 2025				Tournament CURRO Tournament 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 0.5
		Opponent Van Straaten, P (Petrus)				Opponent Ward, A (Ashton)

#	Games	Start				End
1	9	Tournament DR KKD Ferdies Mar 2024				Tournament North West Schools Finals 2024
		date 2024-03-02	rnd 5	type Standard	result 0.5	date 2024-08-24	rnd 3	type Standard	result 0.5
		Opponent Muller, C (Christiaan)				Opponent Zanazo, K (Kopano)
2	7	Tournament DR KK Volkies 2025				Tournament CURRO Tournament 2025
		date 2025-02-01	rnd 2	type Standard	result 1	date 2025-04-12	rnd 3	type Standard	result 0.5
		Opponent Van Straaten, P (Petrus)				Opponent Ward, A (Ashton)
3	7	Tournament Dr. Kenneth Kaunda Saamtrek 2023				Tournament Dr Kenneth Kaunda Volkies 2023
		date 2023-02-04	rnd 5	type Standard	result 1	date 2023-06-10	rnd 1	type Standard	result 1
		Opponent Molotsi, R (Reamohetse)				Opponent Jansen Van Vuuren, C (Cilliers)

#	Games	Start				End
1	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 5	type Rapid	result 1	date 2018-05-05	rnd 5	type Rapid	result 1
		Opponent Brits, J (Jason)				Opponent Brits, J (Jason)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 3	type Rapid	result 1
		Opponent Du Preez, M (Morne)				Opponent Du Preez, M (Morne)
3	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Jacobs, J (Johan)				Opponent Jacobs, J (Johan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Dr. Kenneth Kaunda Saamtrek 2023				Tournament Dr Kenneth Kaunda Volkies 2023
		date 2023-02-04	rnd 5	type Standard	result 1	date 2023-06-10	rnd 1	type Standard	result 1
		Opponent Molotsi, R (Reamohetse)				Opponent Jansen Van Vuuren, C (Cilliers)
2	6	Tournament CURRO Tournament 2025				Tournament Knight Shift Open Chess Tournament 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Ackerman, C (Conner)				Opponent Mokoena, B (Bokamoso)
3	6	Tournament Matlosana Mall 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-04	rnd 2	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Msweli, T (Thabang)				Opponent Beukes, L (Lanique)

#	Games	Start				End
1	7	Tournament Dr. Kenneth Kaunda Saamtrek 2023				Tournament Dr Kenneth Kaunda Volkies 2023
		date 2023-02-04	rnd 5	type Standard	result 1	date 2023-06-10	rnd 1	type Standard	result 1
		Opponent Molotsi, R (Reamohetse)				Opponent Jansen Van Vuuren, C (Cilliers)
2	6	Tournament CURRO Tournament 2025				Tournament Knight Shift Open Chess Tournament 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Ackerman, C (Conner)				Opponent Mokoena, B (Bokamoso)
3	6	Tournament Matlosana Mall 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-04	rnd 2	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Msweli, T (Thabang)				Opponent Beukes, L (Lanique)

#	Games	Start				End
1	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 5	type Rapid	result 1	date 2018-05-05	rnd 5	type Rapid	result 1
		Opponent Brits, J (Jason)				Opponent Brits, J (Jason)
2	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 3	type Rapid	result 1	date 2018-05-05	rnd 3	type Rapid	result 1
		Opponent Du Preez, M (Morne)				Opponent Du Preez, M (Morne)
3	1	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 1	type Rapid	result 1
		Opponent Jacobs, J (Johan)				Opponent Jacobs, J (Johan)

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	Krugel ,L (Lian)	6	4.5	212.5	6	4.5	212.5	0	0	0	0	0	0
1	Krugel ,L (Lian)	6	1160.7	1373.2	6	1154.7	1373.2	0	0	0	0	0	0
2	Botha ,Z (Zak)	6	4	141.7	6	4	141.7	0	0	0	0	0	0
2	Botha ,Z (Zak)	6	1235.3	1377	6	1233.3	1377	0	0	0	0	0	0
3	Janse Van Rensburg ,N (Nian)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Janse Van Rensburg ,N (Nian)	3	1201	776	3	1198.9	776	0	0	0	0	0	0
4	Meyer ,J (Jared)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Meyer ,J (Jared)	3	1143.7	1285.3	3	1133	1285.3	0	0	0	0	0	0
5	Van Meersbergen ,E (Ettienne)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
5	Van Meersbergen ,E (Ettienne)	3	1296.6	1438.2	3	1294.3	1438.2	0	0	0	0	0	0
6	Mostert ,CF (Christiaan )	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
6	Mostert ,CF (Christiaan )	3	1151.2	1009.5	3	1155.2	1009.5	0	0	0	0	0	0
7	Mokoena ,B (Bokamoso)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
7	Mokoena ,B (Bokamoso)	3	1372.5	1514.1	3	1375.8	1514.1	0	0	0	0	0	0
8	Fouche ,H (Heinrich)	3	0	-425	3	0	-425	0	0	0	0	0	0
8	Fouche ,H (Heinrich)	3	1333.6	908.6	3	1335.9	908.6	0	0	0	0	0	0
9	Makale ,T (Tlotliso)	3	3	425	3	3	425	0	0	0	0	0	0
9	Makale ,T (Tlotliso)	3	957.9	1382.9	3	947.7	1382.9	0	0	0	0	0	0
10	Van Straaten ,P (Petrus)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
10	Van Straaten ,P (Petrus)	3	1153.7	1012.1	3	1140	1012.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Van Der Merwe, D (Devan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms