Chess South Africa Ratings Database

PLAYER PAGE

Personal

Kiewiet, M (Marvin)

Chess SA id

105078131

FIDE id

Date of birth

2005-03-28 (Adult)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-11-24

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1473.3	1423.2	1215.5	1006
Raw rating	1473.2	1422.2	1215.5	1006
Weighted rating	1473.3	1423.2	1195.3	996.5
Weighted performance	1174.9	1206.8	1040.3	788.9
Floor	1008.1	947	715.5	506
K-factor	32	32	36	40
Min/Max rating change allowed	112.4	120.8	162.2	218.6
Highest rating	1511.3 2024-05-01	1447 2024-06-01	1333.9 2024-04-01	1200 2020-01-01
Highest raw rating	1508.1 2024-06-01	1447 2024-06-01	1215.5 2024-09-01	1006 2024-12-01
Highest weighted rating	1473.2 2025-08-01	1422.2 2025-08-01	1215.5 2024-11-01	1006 2024-11-01
Highest weighted performance	1511.3 2024-05-01	1438.5 2024-05-01	1333.9 2024-04-01	1200 2020-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.1	0.1	0	0
New rating	1473.2	1423.3	1215.5	1006
Analysis
Rating	1473.3	1423.2	1215.5	1006
Raw rating	1473.2	1422.2	1215.5	1006
Weighted rating	1473.3	1423.2	1195.3
Weighted performance	1174.9	1206.8	1040.3
K-factor	32	32	36	40
Floor	1008.1	947	715.5	506
Max/Min rating change allowed	112.4	120.8	162.2	218.6
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	1473.2	1422.2	1215.5	1006
New weighted rating	1473.1	1423.3	1200.6	997.9
New weighted performance	1174.4	1206.3	1039.8	788.5
Temp new rating	1473.2	1423.3	1215.5	1006
Temp new rating +/-	-0.1	0.1	0	0
Final new rating +/-	-0.1	0.1	0	0
New rating	1473.2	1423.3	1215.5	1006
New K-factor	32	32	36	40
New floor	1008.1	947	715.5	506

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	51	26	18	7
	68	58	6	4
	97	64	5	28
	0	0	0	0
History	299	225	35	39

Games since
	Main 56	Standard 31		Rapid 18		Blitz 7
Gender	Male
Age group	Adult
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1468		444		110
Male	1252		368		94
Adult	438		121		26
Adult Male	408		109		25
Standard
	RSA		Province		Region
Overall	1815		487		136
Male	1505		384		109
Adult	432		95		13
Adult Male	401		84		12
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	263	149.5	56.84	58.2	1274.1	1332.2
Standard	195	113.5	58.21	69.7	1232.5	1302.3
Rapid	29	17.5	60.34	87.9	1427.1	1515
Blitz	39	18.5	47.44	-21.8	1367.9	1346.1

Date	Main	Standard	Rapid	Blitz
2025-09-30	1473.2	1422.2	1215.5	1006
2025-09-01	1473.2	1422.2	1215.5	1006
2025-08-01	1473.2	1422.2	1215.5	1006
2025-07-01	1472.7	1421.3	1215.5	1006
2025-06-01	1471.7	1420	1215.5	1006
2025-05-01	1470.2	1418.4	1215.5	1006
2025-04-01	1468.2	1416.5	1215.5	1006
2025-03-01	1466	1414.6	1215.5	1006
2025-02-01	1461.9	1412.8	1215.5	1006
2025-01-01	1435.4	1409.6	1215.5	1006
2024-12-01	1435.4	1409.6	1215.5	1006
2024-11-01	1484.3	1447	1215.5	974.8
2024-10-01	1484.3	1447	1215.5	974.8
2024-09-01	1484.3	1447	1215.5	974.8
2024-08-01	1508.1	1447	1164.1	974.8
2024-07-01	1508.1	1447	1164.1	974.8
2024-06-01	1508.1	1447	1164.1	974.8
2024-08-01	1506	1435.8	1164.1	974.8
2024-04-01	1488.4	1399	1072.1	974.8
2024-03-01	1488.4	1399	1072.1	974.8
2024-02-01	1460.2	1399	942.5	974.8
2024-01-01	1460.2	1399	942.5	974.8
2023-12-01	1460.2	1399	942.5	974.8
2023-11-01	1460.2	1399	942.5	974.8

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	Eden Closed 2024 (Men)	2024-11-23	2024-11-24	Standard	Eden (WEG)	5	5	1.5	Yes	Analysis
2	Eden Gambit Chess Tournament 2024 (B)	2024-11-02	2024-11-02	Standard	Eden (WEG)	5	5	3	Yes	Analysis
3	Eden Gambit Chess Tournament 2024 (Blitz)	2024-11-01	2024-11-01	Blitz	Eden (WEG)	7	7	2	Yes	Analysis
4	Eden Rapid 2024 (A)	2024-08-03	2024-08-03	Rapid	Eden (WEG)	6	6	2	Yes	Analysis
5	Steinitz Chess Festival 2024 (Open)	2024-05-10	2024-05-12	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
6	Eden Chess Trials 2 2024 (U20)	2024-04-13	2024-04-20	Standard	Eden (WEG)	10	10	6.5	Yes	Analysis
7	Waboomskraal Chess Club Open 2024	2024-04-06	2024-04-06	Rapid	Eden (WEG)	7	6	4	Yes	Analysis
8	Southern Knights Rapid 2024 (Senior)	2024-02-24	2024-02-24	Rapid	Eden (WEG)	6	6	4.5	Yes	Analysis
9	Eden Chess Union League 2023 (1st Division)	2023-11-11	2023-11-11	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
10	Mossel Bay Open 2023 (B)	2023-09-30	2023-10-01	Standard	Eden (WEG)	6	5	4	Yes	Analysis
11	Western Cape Top Schools 2023 (U18 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	4.5	Yes	Analysis
12	Pacaltsdorp Chess Club Open 2023 (B)	2023-08-26	2023-08-26	Rapid	Eden (WEG)	6	6	6	Yes	Analysis
13	Eden Top Schools 2023 (U18 Mix)	2023-08-19	2023-08-19	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
14	Eden Trials 2+3 2023 (U20)	2023-04-15	2023-05-13	Standard	Eden (WEG)	10	10	5.5	Yes	Analysis
15	George Chess Club Winter Open 2023 (B)	2023-05-20	2023-05-20	Standard	Eden (WEG)	5	4	2	Yes	Analysis
16	Western Cape HS Individuals 2023 (U19 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
17	Western Cape Inter Regional 2023 (Junior Boys)	2023-03-18	2023-03-19	Standard	Eden (WEG)	5	4	2	Yes	Analysis
18	Western Cape Inter Regional 2023 (Blitz)	2023-03-17	2023-03-17	Blitz	Eden (WEG)	5	4	1	Yes	Analysis
19	Eden Trails 1 2023 (U19 Boys)	2023-03-11	2023-03-11	Standard	Eden (WEG)	5	5	4	Yes	Analysis
20	Mossel Bay Schools Trials 2 2023 (U19 Boys)	2023-02-18	2023-02-18	Standard	Eden (WEG)	6	4	2	Yes	Analysis
21	Mossel Bay Schools Trials 1 2023 (U19 Boys)	2023-01-28	2023-01-28	Standard	Eden (WEG)	4	4	3	Yes	Analysis
22	Mossel Bay Open 2022 (B)	2022-09-30	2022-10-02	Standard	Eden (WEG)	6	6	3	Yes	Analysis
23	Western Cape Top Schools 2022 (U18 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	2.5	Yes	Analysis
24	Interclub Blitz Evening 2022	2022-08-11	2022-08-11	Blitz	Eden (WEG)	6	6	5	Yes	Analysis
25	South African Open 2022 (B)	2022-07-09	2022-07-17	Standard	Cape Town (WCT)	11	11	4.5	Yes	Analysis
26	South African Open 2022 (U20)	2022-07-11	2022-07-13	Standard	Cape Town (WCT)	6	5	1.5	Yes	Analysis
27	South African Open 2022 (Blitz)	2022-07-14	2022-07-14	Blitz	Cape Town (WCT)	10	10	3	Yes	Analysis
28	Knysna Oyster Festival Rapid Chess 2022 (A)	2022-07-02	2022-07-02	Rapid	Eden (WEG)	5	5	1	Yes	Analysis
29	Interclub Blitz Evening 2022	2022-06-08	2022-06-08	Blitz	Eden (WEG)	6	6	4.5	Yes	Analysis
30	George Open 2022 (B)	2022-06-11	2022-06-11	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
31	Steinitz Open 2022 (C)	2022-05-21	2022-05-22	Standard	Cape Town (WCT)	5	5	3.5	Yes	Analysis
32	Western Cape Schools Chess 2022 (U18 Boys)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	2	Yes	Analysis
33	Interclub Blitz Evening 2022	2022-05-11	2022-05-11	Blitz	Eden (WEG)	6	6	3	Yes	Analysis
34	Eden Proewe 2 2022 (O18 Seuns)	2022-04-09	2022-04-09	Standard	Eden (WEG)	5	5	4	Yes	Analysis
35	Eden Open 2022 (B)	2022-04-22	2022-04-24	Standard	Eden (WEG)	6	6	3.5	Yes	Analysis
36	Eden Proewe 1 2022 (O18 Seuns)	2022-03-12	2022-03-12	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
37	Mosselbaai Skole Skaak Proewe 1 2022 (U18 Open)	2022-01-29	2022-01-29	Standard	Eden (WEG)	5	5	5	Yes	Analysis
38	Eden Schools Closed Trials 1 2020 (U15 Boys)	2020-03-07	2020-03-07	Standard	Eden (WEG)	5	4	1.5	Yes	Analysis
39	Mossel Bay Trials 2 2020 (U15)	2020-02-15	2020-02-15	Standard	Eden (WEG)	5	4	2.5	Yes	Analysis
40	Mossel Bay Trials 1 2020 (U15)	2020-02-01	2020-02-01	Standard	Eden (WEG)	5	5	4	Yes	Analysis
41	Eden Top Schools 2019 (U18)	2019-07-20	2019-07-20	Standard	Eden (WEG)	5	4	2	Yes	Analysis
42	Eden Trials 2 2019 (U16 Open)	2019-04-13	2019-04-13	Standard	Eden (WEG)	5	5	2	Yes	Analysis
43	Eden Trials 1 2019 (U16 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
44	Eden Top Schools 2018 (U13 Mix)	2018-07-28	2018-07-28	Standard	Eden (WEG)	5	5	2	Yes	Analysis
45	EDENSC Closed 3 2018 (U14 Open)	2018-05-12	2018-05-12	Standard	Eden (WEG)	5	5	3	Yes	Analysis
46	EDENSC Closed 2 2018 (U14 Open)	2018-04-14	2018-04-14	Standard	Eden (WEG)	5	5	3	Yes	Analysis
47	EDENSC Closed 1 2018 (U14 Boys)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	3	Yes	Analysis

#	Games	Start				End
1	12	Tournament Eden Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-08-19	rnd 3	type Standard	result 1	date 2023-09-02	rnd 3	type Standard	result 1
		Opponent Wheymann, L (Laurenzo)				Opponent Osborn, C (Cyngen)
2	10	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Proewe 1 2022
		date 2020-03-07	rnd 5	type Standard	result 0.5	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Campher, L (Luwiaan)				Opponent Taute, C (Clayden)
3	7	Tournament Waboomskraal Chess Club Open 2024				Tournament Eden Chess Trials 2 2024
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-04-13	rnd 3	type Standard	result 0.5
		Opponent Marner, B (Bryan Neil)				Opponent Meyer, J (Jared)

#	Games	Start				End
1	10	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Proewe 1 2022
		date 2020-03-07	rnd 5	type Standard	result 0.5	date 2022-03-12	rnd 4	type Standard	result 1
		Opponent Campher, L (Luwiaan)				Opponent Taute, C (Clayden)
2	6	Tournament Mossel Bay Open 2023				Tournament Eden Chess Union League 2023
		date 2023-10-01	rnd 4	type Standard	result 1	date 2023-11-11	rnd 3	type Standard	result 0.5
		Opponent Campbell, A (Anje)				Opponent Cornforth, K (Kayleigh)
3	6	Tournament Eden Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-08-19	rnd 3	type Standard	result 1	date 2023-09-02	rnd 3	type Standard	result 1
		Opponent Wheymann, L (Laurenzo)				Opponent Osborn, C (Cyngen)

#	Games	Start				End
1	8	Tournament Pacaltsdorp Chess Club Open 2023				Tournament Southern Knights Rapid 2024
		date 2023-08-26	rnd 1	type Rapid	result 1	date 2024-02-24	rnd 2	type Rapid	result 1
		Opponent Raubenheimer, T (Tashnique)				Opponent Brink, A (Andrew)
2	4	Tournament Waboomskraal Chess Club Open 2024				Tournament Waboomskraal Chess Club Open 2024
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-04-06	rnd 7	type Rapid	result 1
		Opponent Marner, B (Bryan Neil)				Opponent Coetzee, JS (Jurgen)
3	3	Tournament Southern Knights Rapid 2024				Tournament Southern Knights Rapid 2024
		date 2024-02-24	rnd 4	type Rapid	result 1	date 2024-02-24	rnd 6	type Rapid	result 0.5
		Opponent Kuyler, L (Luzandri)				Opponent Cornforth, K (Kayleigh)

#	Games	Start				End
1	5	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-08-11	rnd 2	type Blitz	result 1	date 2022-08-11	rnd 6	type Blitz	result 1
		Opponent Heesen, T (Tyler)				Opponent Lewis, M (Mark)
2	4	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-06-08	rnd 3	type Blitz	result 0.5	date 2022-06-08	rnd 6	type Blitz	result 1
		Opponent Osmers, D (Ditrich)				Opponent Miggels, A (Alaric)
3	2	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-05-11	rnd 6	type Blitz	result 1	date 2022-06-08	rnd 1	type Blitz	result 1
		Opponent Heesen, T (Tyler)				Opponent Potts, M (Markwin)

#	Games	Start				End
1	9	Tournament Eden Top Schools 2023				Tournament Pacaltsdorp Chess Club Open 2023
		date 2023-08-19	rnd 3	type Standard	result 1	date 2023-08-26	rnd 6	type Rapid	result 1
		Opponent Wheymann, L (Laurenzo)				Opponent Muller, L (Luzane)
2	6	Tournament Waboomskraal Chess Club Open 2024				Tournament Eden Chess Trials 2 2024
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-04-13	rnd 2	type Standard	result 1
		Opponent Marner, B (Bryan Neil)				Opponent Ribeiro, E (Enrique)
3	6	Tournament Interclub Blitz Evening 2022				Tournament Western Cape Top Schools 2022
		date 2022-08-11	rnd 2	type Blitz	result 1	date 2022-09-16	rnd 1	type Standard	result 1
		Opponent Heesen, T (Tyler)				Opponent Victor, A (Aj)

#	Games	Start				End
1	5	Tournament Mossel Bay Open 2023				Tournament Eden Chess Union League 2023
		date 2023-10-01	rnd 4	type Standard	result 1	date 2023-11-11	rnd 2	type Standard	result 1
		Opponent Campbell, A (Anje)				Opponent Lewis, M (Mark)
2	5	Tournament Mosselbaai Skole Skaak Proewe 1 2022				Tournament Mosselbaai Skole Skaak Proewe 1 2022
		date 2022-01-29	rnd 1	type Standard	result 1	date 2022-01-29	rnd 5	type Standard	result 1
		Opponent Buis, H (Henley)				Opponent Mentoor, M (Mason)
3	3	Tournament Western Cape Top Schools 2023				Tournament Mossel Bay Open 2023
		date 2023-09-03	rnd 5	type Standard	result 1	date 2023-09-30	rnd 2	type Standard	result 1
		Opponent Tshapu, Y (Yibanathi)				Opponent Wheymann, L (Laurenzo)

#	Games	Start				End
1	8	Tournament Pacaltsdorp Chess Club Open 2023				Tournament Southern Knights Rapid 2024
		date 2023-08-26	rnd 1	type Rapid	result 1	date 2024-02-24	rnd 2	type Rapid	result 1
		Opponent Raubenheimer, T (Tashnique)				Opponent Brink, A (Andrew)
2	4	Tournament Waboomskraal Chess Club Open 2024				Tournament Waboomskraal Chess Club Open 2024
		date 2024-04-06	rnd 4	type Rapid	result 1	date 2024-04-06	rnd 7	type Rapid	result 1
		Opponent Marner, B (Bryan Neil)				Opponent Coetzee, JS (Jurgen)
3	2	Tournament Southern Knights Rapid 2024				Tournament Southern Knights Rapid 2024
		date 2024-02-24	rnd 4	type Rapid	result 1	date 2024-02-24	rnd 5	type Rapid	result 1
		Opponent Kuyler, L (Luzandri)				Opponent Reynolds, E (Erwee)

#	Games	Start				End
1	5	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-08-11	rnd 2	type Blitz	result 1	date 2022-08-11	rnd 6	type Blitz	result 1
		Opponent Heesen, T (Tyler)				Opponent Lewis, M (Mark)
2	3	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-06-08	rnd 4	type Blitz	result 1	date 2022-06-08	rnd 6	type Blitz	result 1
		Opponent Osmers, D (Ditrich)				Opponent Miggels, A (Alaric)
3	2	Tournament Interclub Blitz Evening 2022				Tournament Interclub Blitz Evening 2022
		date 2022-05-11	rnd 6	type Blitz	result 1	date 2022-06-08	rnd 1	type Blitz	result 1
		Opponent Heesen, T (Tyler)				Opponent Potts, M (Markwin)

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	Taute ,C (Clayden)	8	2	-212.5	7	2	-182.1	1	0	-425	0	0	0
1	Taute ,C (Clayden)	8	1506.2	1293.7	7	1427	1324	1	1781.2	1081.2	0	0	0
2	Barends ,X (Xavier)	5	4	255	3	2	141.7	0	0	0	2	2	425
2	Barends ,X (Xavier)	5	1175.2	1430.2	3	1171.6	1316.9	0	0	0	2	1200	1600.2
3	Joubert ,K (Kyle)	4	2	0	4	2	0	0	0	0	0	0	0
3	Joubert ,K (Kyle)	4	1312.2	1312.2	4	1304	1312.2	0	0	0	0	0	0
4	Buis ,H (Henley)	4	4	425	4	4	425	0	0	0	0	0	0
4	Buis ,H (Henley)	4	1095.8	1520.8	4	1084.5	1520.8	0	0	0	0	0	0
5	Jansen Van Rensburg ,R (Ruan)	4	0.5	-318.8	3	0.5	-283.3	1	0	-425	0	0	0
5	Jansen Van Rensburg ,R (Ruan)	4	1421.8	1103.1	3	1393.5	1138.5	1	1340.3	996.8	0	0	0
6	Claassen ,R (Ruwaldo)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
6	Claassen ,R (Ruwaldo)	3	1342.6	1342.6	3	1335.1	1342.6	0	0	0	0	0	0
7	Lewis ,T (Tyler)	3	3	425	3	3	425	0	0	0	0	0	0
7	Lewis ,T (Tyler)	3	1057.1	1482.1	3	1058.8	1482.1	0	0	0	0	0	0
8	Botha ,J (Jonathan)	3	3	425	3	3	425	0	0	0	0	0	0
8	Botha ,J (Jonathan)	3	1223.3	1648.3	3	1216.3	1648.3	0	0	0	0	0	0
9	Cornforth ,K (Kayleigh)	3	2	141.7	2	1.5	212.5	1	0.5	0	0	0	0
9	Cornforth ,K (Kayleigh)	3	1563.2	1704.9	2	1572	1775.7	1	1233.3	1563.2	0	0	0
10	Brink ,A (Andrew)	3	3	425	2	2	425	1	1	425	0	0	0
10	Brink ,A (Andrew)	3	1588.6	2013.6	2	1595.8	2013.6	1	1297.4	2013.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Kiewiet, M (Marvin)

Ratings

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Last 24 raw ratings

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Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms