Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Vries, M (Marisa)

Chess SA id

205006894

FIDE id

Date of birth

2005-03-16 (Adult)

Gender

Female

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-02-04

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1218.2	1188.8	817.5	817.5
Raw rating	1218.2	1188.8	817.5	817.5
Weighted rating	1218.2	1188.8	817.5	817.5
Weighted performance	641.7	628.7	0	0
Floor	807.3	803.2	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	161.6	168.5	286	286
Highest rating	1320.5 2020-02-01	1316.3 2020-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1307.3 2020-03-01	1303.2 2020-03-01	817.5 2024-02-01	817.5 2024-02-01
Highest weighted rating	1307.3 2022-02-01	1303.2 2022-02-01	817.5 2024-11-01	817.5 2024-11-01
Highest weighted performance	1320.5 2020-02-01	1316.3 2020-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1218.2	1188.8	817.5	817.5
Analysis
Rating	1218.2	1188.8	817.5	817.5
Raw rating	1218.2	1188.8	817.5	817.5
Weighted rating	1218.2	1188.8	817.5
Weighted performance	641.7	628.7	0
K-factor	36	36	40	40
Floor	807.3	803.2	500	500
Max/Min rating change allowed	161.6	168.5	286	286
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	1218.2	1188.8	817.5	817.5
New weighted rating	1218.2	1188.8	817.5	817.5
New weighted performance	641.3	628.3	0	0
Temp new rating	1218.2	1188.8	817.5	817.5
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1218.2	1188.8	817.5	817.5
New K-factor	36	36	40	40
New floor	807.3	803.2	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	10	10	0
	7	7	0
	0	0	0
History	154	143	11

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-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	133	71	53.38	28.8	1112.9	1141.7
Standard	133	71	53.38	28.8	1112.9	1141.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1218.2	1188.8	817.5	817.5
2025-09-01	1218.2	1188.8	817.5	817.5
2025-08-01	1218.2	1188.8	817.5	817.5
2025-07-01	1218.2	1188.8	817.5	817.5
2025-06-01	1218.2	1188.8	817.5	817.5
2025-05-01	1218.2	1188.8	817.5	817.5
2025-04-01	1218.2	1188.8	817.5	817.5
2025-03-01	1218.2	1188.8	817.5	817.5
2025-02-01	1218.2	1188.8	817.5	817.5
2025-01-01	1218.2	1188.8	817.5	817.5
2024-12-01	1218.2	1188.8	817.5	817.5
2024-11-01	1218.2	1188.8	817.5	817.5
2024-10-01	1218.2	1188.8	817.5	817.5
2024-09-01	1218.2	1188.8	817.5	817.5
2024-08-01	1218.2	1188.8	817.5	817.5
2024-07-01	1218.2	1188.8	817.5	817.5
2024-06-01	1218.2	1188.8	817.5	817.5
2024-08-01	1218.2	1188.8	817.5	817.5
2024-04-01	1218.2	1188.8	817.5	817.5
2024-03-01	1218.2	1188.8	817.5	817.5
2024-02-01	1218.2	1188.8	817.5	817.5
2024-01-01	1218.2	1188.8	817.5	817.5
2023-12-01	1218.2	1188.8	817.5	817.5
2023-11-01	1218.2	1188.8	817.5	817.5

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	Grey College Team Championship 2023 (A)	2023-02-03	2023-02-04	Standard	Mangaung (FMB)	5	5	1	Yes	Analysis
2	2023 Tshwane Chess Open Registration Tournament (B2)	2023-01-28	2023-01-28	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2022 South African Junior Team Chess Championships (U20 Open+Girls)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	2	1	Yes	Analysis
4	Grey College Team Championship 2022 (A)	2022-02-18	2022-02-19	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
5	2020 Wynie Robbertse Open Chess Tournament (C)	2020-03-07	2020-03-07	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
6	2020 Piet Robbertse (C)	2020-01-31	2020-02-02	Standard	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
7	2020 Registration Tournament (C)	2020-01-25	2020-01-25	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
8	2019 South African Top Schools Team Championships (U13+U15 Girls)	2020-01-10	2020-01-11	Standard	4 Knights (4K)	5	4	1.5	Yes	Analysis
9	2019 South African Junior Team Championships (U16-U20 Girls)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
10	2019 TC SAJCC Prep Tournament (B)	2019-11-30	2019-11-30	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
11	2019 Etienne Lewis Trials (U16 Girls)	2019-08-30	2019-09-01	Standard	Tshwane (GTP)	7	6	3	Yes	Analysis
12	2019 Gauteng School League Finals (U15 Girls)	2019-08-24	2019-08-24	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	2019 Capablanca Chess Festival (C)	2019-04-19	2019-04-21	Standard	Tshwane (GTP)	7	7	3.5	Yes	Analysis
14	2019 Waterkloof Open (C)	2019-03-02	2019-03-03	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
15	2019 D4 Individual Finals (U15 Girls)	2019-03-09	2019-03-09	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
16	2019 Tshwane Chess Registration Tournament (C)	2019-01-26	2019-01-26	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
17	2018 Tshwane Inter Region (U16 Girls)	2018-12-01	2018-12-01	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
18	South African Junior Team Championships 2018 (U14B Girls)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	6	Yes	Analysis
19	2018 Etienne Lewis Trials (U14 Girls)	2018-08-31	2018-09-02	Standard	Tshwane (GTP)	7	7	4	Yes	Analysis
20	2018 Gauteng League Final (U13 Girls)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
21	2018 Alekhine Open (D)	2018-08-09	2018-08-11	Standard	Tshwane (GTP)	6	6	4	Yes	Analysis
22	2018 Lubowski Open (D)	2018-05-12	2018-05-12	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
23	2018 Capablanca Swiss (C)	2018-04-27	2018-04-29	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
24	2018 D4 Tshwane North Individual Chess Championships (U13 Girls)	2018-03-10	2018-03-10	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
25	2018 Tshwane Registration Open Chess Tournament (D)	2018-01-27	2018-01-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2018				Tournament 2019 Tshwane Chess Registration Tournament
		date 2018-12-16	rnd 2	type Standard	result 1	date 2019-01-26	rnd 2	type Standard	result 1
		Opponent Mfingwana, N (Nasiphi)				Opponent Swart, SN (Sebastiaan)
2	5	Tournament 2019 South African Top Schools Team Championships				Tournament 2020 Registration Tournament
		date 2020-01-11	rnd 4	type Standard	result 1	date 2020-01-25	rnd 4	type Standard	result 0.5
		Opponent Sikhosana, M (Michelle)				Opponent Grobler, A (Anton)
3	4	Tournament 2020 Wynie Robbertse Open Chess Tournament				Tournament Grey College Team Championship 2022
		date 2020-03-07	rnd 3	type Standard	result 1	date 2022-02-18	rnd 1	type Standard	result 1
		Opponent Trytsman, W (Waldo)				Opponent Bouwer, D (Divan)

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2018				Tournament 2019 Tshwane Chess Registration Tournament
		date 2018-12-16	rnd 2	type Standard	result 1	date 2019-01-26	rnd 2	type Standard	result 1
		Opponent Mfingwana, N (Nasiphi)				Opponent Swart, SN (Sebastiaan)
2	5	Tournament 2019 South African Top Schools Team Championships				Tournament 2020 Registration Tournament
		date 2020-01-11	rnd 4	type Standard	result 1	date 2020-01-25	rnd 4	type Standard	result 0.5
		Opponent Sikhosana, M (Michelle)				Opponent Grobler, A (Anton)
3	4	Tournament 2020 Wynie Robbertse Open Chess Tournament				Tournament Grey College Team Championship 2022
		date 2020-03-07	rnd 3	type Standard	result 1	date 2022-02-18	rnd 1	type Standard	result 1
		Opponent Trytsman, W (Waldo)				Opponent Bouwer, D (Divan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2018				Tournament 2019 Tshwane Chess Registration Tournament
		date 2018-12-16	rnd 2	type Standard	result 1	date 2019-01-26	rnd 2	type Standard	result 1
		Opponent Mfingwana, N (Nasiphi)				Opponent Swart, SN (Sebastiaan)
2	4	Tournament 2019 TC SAJCC Prep Tournament				Tournament 2019 TC SAJCC Prep Tournament
		date 2019-11-30	rnd 1	type Standard	result 1	date 2019-11-30	rnd 4	type Standard	result 1
		Opponent Dvir, J (Jordan)				Opponent Nale, PJ (Pathias Junior)
3	4	Tournament 2018 Lubowski Open				Tournament 2018 Alekhine Open
		date 2018-05-12	rnd 5	type Standard	result 1	date 2018-08-09	rnd 3	type Standard	result 1
		Opponent Mahlangu, T (Thabang)				Opponent Jacobs, A (Angelo)

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2018				Tournament 2019 Tshwane Chess Registration Tournament
		date 2018-12-16	rnd 2	type Standard	result 1	date 2019-01-26	rnd 2	type Standard	result 1
		Opponent Mfingwana, N (Nasiphi)				Opponent Swart, SN (Sebastiaan)
2	4	Tournament 2019 TC SAJCC Prep Tournament				Tournament 2019 TC SAJCC Prep Tournament
		date 2019-11-30	rnd 1	type Standard	result 1	date 2019-11-30	rnd 4	type Standard	result 1
		Opponent Dvir, J (Jordan)				Opponent Nale, PJ (Pathias Junior)
3	4	Tournament 2018 Lubowski Open				Tournament 2018 Alekhine Open
		date 2018-05-12	rnd 5	type Standard	result 1	date 2018-08-09	rnd 3	type Standard	result 1
		Opponent Mahlangu, T (Thabang)				Opponent Jacobs, A (Angelo)

No games found.

#	Games	Start				End

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	Timmerman ,ME (Mischke Enya)	4	2	0	4	2	0	0	0	0	0	0	0
1	Timmerman ,ME (Mischke Enya)	4	1159	1159	4	1154.6	1159	0	0	0	0	0	0
2	Bouwer ,D (Dane)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	Bouwer ,D (Dane)	3	1435.1	1010.1	3	1431.5	1010.1	0	0	0	0	0	0
3	Botha ,R (Riti)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
3	Botha ,R (Riti)	3	1066.6	1349.9	3	1063	1349.9	0	0	0	0	0	0
4	Behr ,S (Stesha)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Behr ,S (Stesha)	3	1212	1353.6	3	1205.3	1353.6	0	0	0	0	0	0
5	De Souza-Allegria ,M (Minette)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	De Souza-Allegria ,M (Minette)	2	1087	1299.5	2	1085.4	1299.5	0	0	0	0	0	0
6	Bodenstein ,J (Jeanre)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
6	Bodenstein ,J (Jeanre)	2	1173.6	961.1	2	1180.2	961.1	0	0	0	0	0	0
7	Buitendag ,N (Nanique)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
7	Buitendag ,N (Nanique)	2	1267.1	1054.6	2	1264.6	1054.6	0	0	0	0	0	0
8	Jacobs ,A (Angelo)	2	2	425	2	2	425	0	0	0	0	0	0
8	Jacobs ,A (Angelo)	2	1094.3	1519.3	2	1083.8	1519.3	0	0	0	0	0	0
9	Reyneke ,M (Melindie)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Reyneke ,M (Melindie)	2	1033	608	2	1037.1	608	0	0	0	0	0	0
10	Pelser ,J (Jean-Marie)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Pelser ,J (Jean-Marie)	2	1119.6	694.6	2	1120.4	694.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

De Vries, M (Marisa)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms