Chess South Africa Ratings Database

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Personal

Robertson, M (Marvin)

Chess SA id

1140137570

FIDE id

Date of birth

2014-07-12 (U12)

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

32.9

Junior GPX Points

1307.4

Item	Main	Standard	Rapid	Blitz
Rating	1466.5	1426.9	1501.8	1200
Raw rating	1466.5	1426.9	1498.5	1200
Weighted rating	1449.2	1390.7	1501.8	1200
Weighted performance	1367.4	1348.6	1286.4	0
Floor	985.9	926.9	1047.7	700
K-factor	32	32	32	36
Min/Max rating change allowed	113.4	120	108.4	165.8
Highest rating	1485.9 2024-03-01	1426.9 2025-06-01	1563.8 2023-11-01	1200 2018-10-01
Highest raw rating	1485.9 2024-03-01	1426.9 2025-06-01	1547.7 2023-12-01	1200 2024-02-01
Highest weighted rating	1446.7 2025-09-01	1377.1 2025-08-01	1547.7 2025-05-05	1200 2018-10-01
Highest weighted performance	1483.1 2025-06-01	1425.3 2024-03-01	1563.8 2023-11-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-0.7	0
New rating	1466.5	1426.9	1501.1	1200
Analysis
Rating	1466.5	1426.9	1501.8	1200
Raw rating	1466.5	1426.9	1498.5	1200
Weighted rating	1449.2	1390.7	1501.8
Weighted performance	1367.4	1348.6	1286.4
K-factor	32	32	32	36
Floor	985.9	926.9	1047.7	700
Max/Min rating change allowed	113.4	120	108.4	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	1466.5	1426.9	1498.5	1200
New weighted rating	1450.5	1394.5	1501.1	1200
New weighted performance	1359	1340.1	1278	0
Temp new rating	1466.5	1426.9	1501.1	1200
Temp new rating +/-	0	0	-0.7	0
Final new rating +/-	0	0	-0.7	0
New rating	1466.5	1426.9	1501.1	1200
New K-factor	32	32	32	36
New floor	985.9	926.9	1047.7	700

Item	Main	Standard	Rapid
	0	0	0
	33	22	11
	39	21	18
	80	30	50
	65	46	19
	0	0	0
History	217	119	98

Games since
	Main 82	Standard 47		Rapid 35		Blitz 0
Gender	Male
Age group	U12
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1547		474		65
Male	1303		394		52
U12	181		53		9
U12 Male	131		38		7
Standard
	RSA		Province		Region
Overall	1812		492		63
Male	1499		394		48
U12	226		60		7
U12 Male	162		42		4
Rapid
	RSA		Province		Region
Overall	227		105		18
Male	210		97		15
U12	25		15		4
U12 Male	24		14		4
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	33	23.5	71.21	180.3	1284.1	1464.4
Standard	22	16	72.73	193.2	1279.5	1472.7
Rapid	11	7.5	68.18	154.5	1293.3	1447.8
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	217	149	68.66	158.6	1237.9	1396.6
Standard	119	72	60.5	89.3	1250.5	1339.8
Rapid	98	77	78.57	242.9	1222.7	1465.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1466.5	1426.9	1498.5	1200
2025-09-30	1466.5	1426.9	1498.5	1200
2025-09-01	1466.5	1426.9	1498.5	1200
2025-08-01	1467.5	1426.9	1505	1200
2025-07-01	1467.5	1426.9	1505	1200
2025-06-01	1467.5	1426.9	1504.4	1200
2025-05-01	1450.9	1396.8	1505.6	1200
2025-04-01	1450.9	1396.8	1505.3	1200
2025-03-01	1439.8	1372.2	1504.7	1200
2025-02-01	1432.4	1347.6	1503.4	1200
2025-01-01	1409.5	1344.4	1496.2	1200
2024-12-01	1409.5	1344.4	1496.2	1200
2024-11-01	1409.5	1344.4	1496.2	1200
2024-10-01	1418.8	1346.2	1496.2	1200
2024-09-01	1418.8	1346.2	1496.2	1200
2024-08-01	1436.6	1352.3	1496.2	1200
2024-07-01	1436.6	1352.3	1496.2	1200
2024-09-01	1436.6	1352.3	1496.2	1200
2024-05-01	1469.3	1389.4	1496.2	1200
2024-04-01	1469.3	1389.4	1496.2	1200
2024-03-01	1485.9	1364.2	1534.3	1200
2024-02-01	1480	1364.2	1539.1	1200
2024-01-01	1477.7	1364.2	1547.7	1200
2023-12-01	1477.7	1364.2	1547.7	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	De Villiers PS 2025 (U12 Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U11 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
3	Brave Knights Rapid 2025 (U11)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
4	Cape Winelands Schools Prestige 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Cape Winelands Schools - Trials 1 2025 (U11 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
6	Marie Delport Memorial 2025 (U12 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	De Villiers PS 2025 (U12 Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U11 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
3	Brave Knights Rapid 2025 (U11)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
4	Cape Winelands Schools Prestige 2025 (U11 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Cape Winelands Schools - Trials 1 2025 (U11 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
6	Marie Delport Memorial 2025 (U12 Boys)	2025-01-25	2025-01-26	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
7	Strategema Chess October 2024 (U11)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
8	De Villiers PS Tournament 2024 (U14)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
9	Western Cape PS Individuals Championship 2024 (U11 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
10	Brave Knights 2024 (U11)	2024-03-16	2024-03-16	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
11	Cape Winelands Schools - Prestige 2024 (U11 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
12	Cape Winelands Schools - PS Trials 1 2024 (U11 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	5	Yes	Analysis
13	Cape Winelands - Marie Delport Memorial 2024 (U12)	2024-01-27	2024-01-27	Rapid	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
14	2023 Western Cape Rural Cup (U10)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	3	Yes	Analysis
15	Ashton Skaakmat Rapid 2023 (U9)	2023-11-18	2023-11-18	Rapid	Cape Winelands (WCW)	6	6	6	Yes	Analysis
16	Bonnievale Open Rapid 2023 (U10)	2023-10-21	2023-10-21	Rapid	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
17	Cape Town Junior Chess League Finals 2023 (U12A)	2023-09-16	2023-09-16	Rapid	Cape Town (WCT)	7	7	6.5	Yes	Analysis
18	Western Cape Top Schools 2023 (U11 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	5	3.5	Yes	Analysis
19	CW Top Schools 2023 (U7-U11 Mixed + U11 Girls)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
20	Cape Town Junior Chess League - Round 1 2023 (U12A)	2023-07-22	2023-07-22	Rapid	Cape Town (WCT)	7	6	3.5	Yes	Analysis
21	Langeberg Top Schools 2023 (U7-U13 Mix)	2023-07-29	2023-07-29	Rapid	Cape Winelands (WCW)	5	5	5	Yes	Analysis
22	Cape Town Junior League 2nd Qualifier 2023 (U12)	2023-06-03	2023-06-03	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
23	Western Cape PS Individuals 2023 (U9 Boys)	2023-05-05	2023-05-06	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
24	CWIS Inaugural Chess Championships 2023	2023-03-04	2023-03-04	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
25	Cape Winelands Schools Prestige 2023 (U9 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
26	Langeberg Schools Chess Trials 2023 (U9 Boys+Girls)	2023-02-11	2023-02-11	Rapid	Cape Winelands (WCW)	5	4	3.5	Yes	Analysis
27	Cape Winelands Schools Chess - Trials 1 2023 (U9 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
28	Marie Delport Memorial 2023 (Open)	2023-01-21	2023-01-21	Standard	Cape Winelands (WCW)	6	5	1	Yes	Analysis
29	McGregor Chess December Festival 2022	2022-12-10	2022-12-10	Standard	Cape Winelands (WCW)	4	4	1	Yes	Analysis
30	Robertson Strategema Club 2022 (U9)	2022-10-29	2022-10-29	Standard	Cape Winelands (WCW)	5	0	0	No	Analysis
31	Heritage Chess Open 2022	2022-10-01	2022-10-01	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
32	Strategema 2022 (U9)	2022-09-10	2022-09-10	Standard	Cape Winelands (WCW)	5	0	0	No	Analysis
33	Langeberg Spring Open 2022 (B)	2022-09-03	2022-09-03	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
34	South African Open 2022 (U12)	2022-07-11	2022-07-13	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
35	Brave Knights Chess Festival 2022 (B)	2022-07-30	2022-07-30	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
36	McGregor Open 2022 (B)	2022-06-11	2022-06-11	Standard	Cape Winelands (WCW)	5	4	1.5	Yes	Analysis
37	Langeberg Open 2022 (Sandard)	2022-06-25	2022-06-25	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
38	Western Cape Schools 2022 (U9 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
39	Strategema Chess Festival 2022 (U7+U9 Girls)	2022-05-14	2022-05-14	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
40	McGregor Kings Chess Festival 2022 (U7+U9)	2022-04-09	2022-04-09	Rapid	Cape Winelands (WCW)	5	4	2	Yes	Analysis
41	Cape Winelands Schools 2022 (U9 Boys)	2022-03-12	2022-03-12	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
42	Lanfeberg Schools Chess Trials 2022 (U7+U9)	2022-02-26	2022-02-26	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
43	Cape Winelands Open 2022 (U12)	2022-02-12	2022-02-13	Standard	Cape Winelands (WCW)	6	6	2	Yes	Analysis

#	Games	Start				End
1	12	Tournament Western Cape Top Schools 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-09-03	rnd 5	type Standard	result 1	date 2023-10-21	rnd 3	type Rapid	result 1
		Opponent Buys, L (Louwen)				Opponent Van Wyk, M (Micaile)
2	12	Tournament Langeberg Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-07-29	rnd 1	type Rapid	result 1	date 2023-09-02	rnd 3	type Standard	result 0.5
		Opponent Van Rooi, M (Merichen)				Opponent Pentz, J (Jason)
3	10	Tournament Bonnievale Open Rapid 2023				Tournament 2023 Western Cape Rural Cup
		date 2023-10-21	rnd 5	type Rapid	result 1	date 2023-12-09	rnd 3	type Standard	result 1
		Opponent Mtiki, S (Sesona)				Opponent Steenkamp, W (Willem)

#	Games	Start				End
1	6	Tournament South African Open 2022				Tournament Brave Knights Chess Festival 2022
		date 2022-07-12	rnd 4	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Barends, M (Matthew)				Opponent Jansen, L (Leonay)
2	5	Tournament Western Cape PS Individuals 2023				Tournament Western Cape Top Schools 2023
		date 2023-05-05	rnd 4	type Standard	result 1	date 2023-09-02	rnd 3	type Standard	result 0.5
		Opponent Bester, S (Sebastian)				Opponent Pentz, J (Jason)
3	4	Tournament Cape Winelands Schools Prestige 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-05-17	rnd 1	type Standard	result 1
		Opponent Bekker, T (Thian)				Opponent Sargeant, R (Rome)

#	Games	Start				End
1	20	Tournament Langeberg Top Schools 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-07-29	rnd 1	type Rapid	result 1	date 2023-10-21	rnd 3	type Rapid	result 1
		Opponent Van Rooi, M (Merichen)				Opponent Van Wyk, M (Micaile)
2	13	Tournament Bonnievale Open Rapid 2023				Tournament Cape Winelands - Marie Delport Memorial 2024
		date 2023-10-21	rnd 5	type Rapid	result 1	date 2024-01-27	rnd 5	type Rapid	result 1
		Opponent Mtiki, S (Sesona)				Opponent Krynauw, E (Eben)
3	9	Tournament Langeberg Spring Open 2022				Tournament CWIS Inaugural Chess Championships 2023
		date 2022-09-03	rnd 4	type Rapid	result 0.5	date 2023-03-04	rnd 3	type Rapid	result 1
		Opponent Kleinpenning, A (Aiden)				Opponent Arendorff, F (Franklin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Ashton Skaakmat Rapid 2023				Tournament 2023 Western Cape Rural Cup
		date 2023-11-18	rnd 1	type Rapid	result 1	date 2023-12-09	rnd 3	type Standard	result 1
		Opponent Africa, F (Faithlynn)				Opponent Steenkamp, W (Willem)
2	8	Tournament Cape Town Junior Chess League Finals 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-09-16	rnd 3	type Rapid	result 1	date 2023-10-21	rnd 3	type Rapid	result 1
		Opponent Nogaga, O (Owethu)				Opponent Van Wyk, M (Micaile)
3	7	Tournament Langeberg Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-07-29	rnd 1	type Rapid	result 1	date 2023-08-26	rnd 2	type Rapid	result 1
		Opponent Van Rooi, M (Merichen)				Opponent Sapto, D (Danicko)

#	Games	Start				End
1	6	Tournament South African Open 2022				Tournament Brave Knights Chess Festival 2022
		date 2022-07-12	rnd 4	type Standard	result 1	date 2022-07-30	rnd 3	type Standard	result 1
		Opponent Barends, M (Matthew)				Opponent Jansen, L (Leonay)
2	4	Tournament Cape Winelands Schools Prestige 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-03-08	rnd 3	type Standard	result 1	date 2025-05-17	rnd 1	type Standard	result 1
		Opponent Bekker, T (Thian)				Opponent Sargeant, R (Rome)
3	4	Tournament Marie Delport Memorial 2025				Tournament Cape Winelands Schools - Trials 1 2025
		date 2025-01-26	rnd 6	type Standard	result 1	date 2025-02-22	rnd 3	type Standard	result 1
		Opponent Nel, M (Mattheus Johan)				Opponent Weng, I (Ivan)

#	Games	Start				End
1	8	Tournament Ashton Skaakmat Rapid 2023				Tournament Cape Winelands - Marie Delport Memorial 2024
		date 2023-11-18	rnd 1	type Rapid	result 1	date 2024-01-27	rnd 2	type Rapid	result 1
		Opponent Africa, F (Faithlynn)				Opponent Colyn, E (Estelanie)
2	8	Tournament Cape Town Junior Chess League Finals 2023				Tournament Bonnievale Open Rapid 2023
		date 2023-09-16	rnd 3	type Rapid	result 1	date 2023-10-21	rnd 3	type Rapid	result 1
		Opponent Nogaga, O (Owethu)				Opponent Van Wyk, M (Micaile)
3	7	Tournament Langeberg Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-07-29	rnd 1	type Rapid	result 1	date 2023-08-26	rnd 2	type Rapid	result 1
		Opponent Van Rooi, M (Merichen)				Opponent Sapto, D (Danicko)

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	Van Wyk ,M (Micaile)	6	3	0	1	1	425	5	2	-85	0	0	0
1	Van Wyk ,M (Micaile)	6	1347	1347	1	1129.2	1772	5	1450.8	1262	0	0	0
2	Barends ,R (Reece)	5	3	85	2	1	0	3	2	141.7	0	0	0
2	Barends ,R (Reece)	5	1294.6	1379.6	2	1323.5	1294.6	3	1280.9	1436.3	0	0	0
3	Barends ,M (Matthew)	4	3.5	318.8	3	2.5	283.3	1	1	425	0	0	0
3	Barends ,M (Matthew)	4	1159.2	1478	3	1155.2	1442.6	1	1240	1584.2	0	0	0
4	Koert ,D (Dane)	4	1	-212.5	2	0	-425	2	1	0	0	0	0
4	Koert ,D (Dane)	4	1278.2	1065.7	2	1346.8	853.2	2	1201	1278.2	0	0	0
5	Da Silva ,N (Noah Clint)	4	4	425	2	2	425	2	2	425	0	0	0
5	Da Silva ,N (Noah Clint)	4	1239.1	1664.1	2	1255.3	1664.1	2	1172.9	1664.1	0	0	0
6	Colyn ,E (Estelanie)	4	3	212.5	0	0	0	4	3	212.5	0	0	0
6	Colyn ,E (Estelanie)	4	1225	1437.5	0	0	0	4	1229.4	1437.5	0	0	0
7	Weng ,I (Ivan)	3	3	425	2	2	425	1	1	425	0	0	0
7	Weng ,I (Ivan)	3	1225	1650	2	1175.4	1650	1	1243.5	1650	0	0	0
8	Makipa ,M (Michael)	3	3	425	2	2	425	1	1	425	0	0	0
8	Makipa ,M (Michael)	3	1063.2	1488.2	2	1071	1488.2	1	1136	1488.2	0	0	0
9	Klopper ,B (Ben)	3	0	-425	2	0	-425	1	0	-425	0	0	0
9	Klopper ,B (Ben)	3	1483.1	1058.1	2	1408.8	1058.1	1	1515.1	1058.1	0	0	0
10	Reynard ,R (Ree-Shaan)	3	2	141.7	2	1	0	1	1	425	0	0	0
10	Reynard ,R (Ree-Shaan)	3	1254.4	1396.1	2	1194.1	1254.4	1	1238.9	1679.4	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Robertson, M (Marvin)

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms