Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grib, J (Jessica)

Chess SA id

281011165

FIDE id

Date of birth

1981-06-20 (Adult)

Gender

Female

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1177.8	1161	1300	1300
Raw rating	1177.8	1161	1300	1300
Weighted rating	1173.8	1153.7	1299.7	1299.7
Weighted performance	950	949	0	0
Floor	700	700	800	800
K-factor	36	36	36	36
Min/Max rating change allowed	171.2	175.3	143.8	143.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1300 2024-03-01	1300 2024-03-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1300 2024-03-01	1300 2024-03-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1296.7 2025-08-01	1296.7 2025-08-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1177.8	1161	1300	1300
Analysis
Rating	1177.8	1161	1300	1300
Raw rating	1177.8	1161	1300	1300
Weighted rating	1173.8	1153.7	1299.7
Weighted performance	950	949	0
K-factor	36	36	36	36
Floor	700	700	800	800
Max/Min rating change allowed	171.2	175.3	143.8	143.8
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	1177.8	1161	1300	1300
New weighted rating	1174.7	1155.1	1300	1300
New weighted performance	943.3	942.3	0	0
Temp new rating	1177.8	1161	1300	1300
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1177.8	1161	1300	1300
New K-factor	36	36	36	36
New floor	700	700	800	800

Item	Main	Standard
	0	0
	6	6
	9	9
	8	8
	8	8
	0	0
History	83	83

Games since
	Main 15	Standard 15		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	6	3	50	0	1214.2	1214.2
Standard	6	3	50	0	1214.2	1214.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	55	17	30.91	-162.3	1238	1075.7
Standard	55	17	30.91	-162.3	1238	1075.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1177.8	1161	1300	1300
2025-09-30	1177.8	1161	1300	1300
2025-09-01	1177.8	1161	1300	1300
2025-08-01	1177.8	1161	1300	1300
2025-07-01	1177.8	1161	1300	1300
2025-06-01	1177.8	1161	1300	1300
2025-05-01	1177.8	1161	1300	1300
2025-04-01	1177.8	1161	1300	1300
2025-03-01	1165	1143.6	1300	1300
2025-02-01	1165	1143.6	1300	1300
2025-01-01	1165	1143.6	1300	1300
2024-12-01	1165	1143.6	1300	1300
2024-11-01	1165	1143.6	1300	1300
2024-10-01	1165	1143.6	1300	1300
2024-09-01	1187.6	1164.4	1300	1300
2024-08-01	1187.6	1164.4	1300	1300
2024-07-01	1187.6	1164.4	1300	1300
2024-09-01	1187.6	1164.4	1300	1300
2024-05-01	1187.6	1164.4	1300	1300
2024-04-01	1145.8	1102.4	1300	1300
2024-03-01	1145.8	1102.4	1300	1300
2024-02-01	1145.8	1102.4	1300	1300
2024-01-01	1145.8	1102.4	1300	1300
2023-12-01	1076.1	1073.6	1200	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	SA Braille Open 2025	2025-03-22	2025-03-23	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	SA Braille Open 2025	2025-03-22	2025-03-23	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
2	2024 Tuks Open Chess Tournament (Braille)	2024-08-28	2024-08-28	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
3	South African Braille Open 2024	2024-03-09	2024-03-09	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
4	2023 Tuks Open Chess Tournament (Braille)	2023-10-07	2023-10-07	Standard	Tshwane (GTP)	4	4	1.5	Yes	Analysis
5	ANIME @ Play Chess 2023 (Braille)	2023-08-12	2023-08-12	Standard	Ekurhuleni (GE)	4	4	1	Yes	Analysis
6	2022 Wynie Robbertse Open (Development)	2022-10-08	2022-10-08	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
7	Ekurhuleni Chess Springs Club Open 2022 (F)	2022-09-03	2022-09-03	Standard	Ekurhuleni (GE)	5	4	1	Yes	Analysis
8	2019 South African Braille Championship	2020-01-11	2020-01-12	Standard	4 Knights (4K)	5	5	2	Yes	Analysis
9	2019 Gauteng Braille Open	2019-10-26	2019-10-26	Standard	Tshwane (GTP)	4	4	1	Yes	Analysis
10	2019 SWVG Arnold Classic (Blind)	2019-05-18	2019-05-18	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
11	South African Braille Championships 2018	2018-12-21	2018-12-23	Standard	4 Knights (4K)	5	5	1	Yes	Analysis
12	SWVG Arnold Classic Rapid & Blitz 2018 (Braille)	2018-05-18	2018-05-18	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament South African Braille Open 2024				Tournament South African Braille Open 2024
		date 2024-03-09	rnd 2	type Standard	result 1	date 2024-03-09	rnd 4	type Standard	result 1
		Opponent Rahn, MC (Marlene)				Opponent Joubert, W (Willem)
2	3	Tournament 2023 Tuks Open Chess Tournament				Tournament 2023 Tuks Open Chess Tournament
		date 2023-10-07	rnd 1	type Standard	result 0.5	date 2023-10-07	rnd 3	type Standard	result 0.5
		Opponent Grove, IJ (Izak)				Opponent Joubert, W (Willem)
3	2	Tournament SA Braille Open 2025				Tournament SA Braille Open 2025
		date 2025-03-23	rnd 5	type Standard	result 1	date 2025-03-23	rnd 6	type Standard	result 1
		Opponent Ngwevela, L (Luzuku)				Opponent May, JM (Jaco)

#	Games	Start				End
1	3	Tournament South African Braille Open 2024				Tournament South African Braille Open 2024
		date 2024-03-09	rnd 2	type Standard	result 1	date 2024-03-09	rnd 4	type Standard	result 1
		Opponent Rahn, MC (Marlene)				Opponent Joubert, W (Willem)
2	3	Tournament 2023 Tuks Open Chess Tournament				Tournament 2023 Tuks Open Chess Tournament
		date 2023-10-07	rnd 1	type Standard	result 0.5	date 2023-10-07	rnd 3	type Standard	result 0.5
		Opponent Grove, IJ (Izak)				Opponent Joubert, W (Willem)
3	2	Tournament SA Braille Open 2025				Tournament SA Braille Open 2025
		date 2025-03-23	rnd 5	type Standard	result 1	date 2025-03-23	rnd 6	type Standard	result 1
		Opponent Ngwevela, L (Luzuku)				Opponent May, JM (Jaco)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament South African Braille Open 2024				Tournament South African Braille Open 2024
		date 2024-03-09	rnd 2	type Standard	result 1	date 2024-03-09	rnd 4	type Standard	result 1
		Opponent Rahn, MC (Marlene)				Opponent Joubert, W (Willem)
2	2	Tournament SA Braille Open 2025				Tournament SA Braille Open 2025
		date 2025-03-23	rnd 5	type Standard	result 1	date 2025-03-23	rnd 6	type Standard	result 1
		Opponent Ngwevela, L (Luzuku)				Opponent May, JM (Jaco)
3	2	Tournament 2019 South African Braille Championship				Tournament 2019 South African Braille Championship
		date 2020-01-11	rnd 2	type Standard	result 1	date 2020-01-11	rnd 3	type Standard	result 1
		Opponent Van Der Westhuizen, T (Tersia)				Opponent Roberts, MA (Mario)

#	Games	Start				End
1	3	Tournament South African Braille Open 2024				Tournament South African Braille Open 2024
		date 2024-03-09	rnd 2	type Standard	result 1	date 2024-03-09	rnd 4	type Standard	result 1
		Opponent Rahn, MC (Marlene)				Opponent Joubert, W (Willem)
2	2	Tournament SA Braille Open 2025				Tournament SA Braille Open 2025
		date 2025-03-23	rnd 5	type Standard	result 1	date 2025-03-23	rnd 6	type Standard	result 1
		Opponent Ngwevela, L (Luzuku)				Opponent May, JM (Jaco)
3	2	Tournament 2019 South African Braille Championship				Tournament 2019 South African Braille Championship
		date 2020-01-11	rnd 2	type Standard	result 1	date 2020-01-11	rnd 3	type Standard	result 1
		Opponent Van Der Westhuizen, T (Tersia)				Opponent Roberts, MA (Mario)

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	Grib ,J (Johannes)	7	0	-425	7	0	-425	0	0	0	0	0	0
1	Grib ,J (Johannes)	7	1390.6	965.6	7	1400.6	965.6	0	0	0	0	0	0
2	Joubert ,W (Willem)	6	2.5	-70.8	6	2.5	-70.8	0	0	0	0	0	0
2	Joubert ,W (Willem)	6	1200.8	1130	6	1189.7	1130	0	0	0	0	0	0
3	De Nobrega ,FP (Florindo)	4	0	-425	4	0	-425	0	0	0	0	0	0
3	De Nobrega ,FP (Florindo)	4	1244.9	819.9	4	1259.7	819.9	0	0	0	0	0	0
4	Grove ,IJ (Izak Johannes)	4	0.5	-318.8	4	0.5	-318.8	0	0	0	0	0	0
4	Grove ,IJ (Izak Johannes)	4	1383	1064.2	4	1379.4	1064.2	0	0	0	0	0	0
5	Kotze ,CP (Charl)	3	0	-425	3	0	-425	0	0	0	0	0	0
5	Kotze ,CP (Charl)	3	1251	826	3	1241	826	0	0	0	0	0	0
6	Smal ,R (Reginald)	3	0	-425	3	0	-425	0	0	0	0	0	0
6	Smal ,R (Reginald)	3	1143.8	718.8	3	1131.6	718.8	0	0	0	0	0	0
7	Blom ,H (Hermanus Christo)	2	1	0	2	1	0	0	0	0	0	0	0
7	Blom ,H (Hermanus Christo)	2	1176.4	1176.4	2	1171.6	1176.4	0	0	0	0	0	0
8	Joubert ,J (Jacques)	2	1	0	2	1	0	0	0	0	0	0	0
8	Joubert ,J (Jacques)	2	1165.4	1165.4	2	1158.4	1165.4	0	0	0	0	0	0
9	Kruger ,FJ (Fransiena Jacoba)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
9	Kruger ,FJ (Fransiena Jacoba)	2	1222.6	1010.1	2	1229.9	1010.1	0	0	0	0	0	0
10	Roberts ,MA (Mario Andre)	2	1	0	2	1	0	0	0	0	0	0	0
10	Roberts ,MA (Mario Andre)	2	1148.2	1148.2	2	1180.4	1148.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Grib, J (Jessica)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms