Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grove, IJ (Izak Johannes)

Chess SA id

165011457

FIDE id

Date of birth

1965-10-23 (Adult)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-10-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1380.3	1383.4	1408	1408
Raw rating	1380.3	1383.4	1408	1408
Weighted rating	1380.2	1383.3	1408	1408
Weighted performance	0	0	0	0
Floor	909.6	909.9	908	908
K-factor	32	32	32	32
Min/Max rating change allowed	128.3	127.7	123.3	123.3
Highest rating	1418.2 2019-05-01	1416.3 2019-05-01	1408 2024-02-01	1408 2024-02-01
Highest raw rating	1409.6 2019-06-01	1409.9 2019-06-01	1408 2024-02-01	1408 2024-02-01
Highest weighted rating	1409.6 2019-10-01	1409.9 2019-10-01	1408 2024-02-01	1408 2024-02-01
Highest weighted performance	1418.2 2019-05-01	1416.3 2019-05-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1380.3	1383.4	1408	1408
Analysis
Rating	1380.3	1383.4	1408	1408
Raw rating	1380.3	1383.4	1408	1408
Weighted rating	1380.2	1383.3	1408
Weighted performance	0	0	0
K-factor	32	32	32	32
Floor	909.6	909.9	908	908
Max/Min rating change allowed	128.3	127.7	123.3	123.3
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	1380.3	1383.4	1408	1408
New weighted rating	1380.2	1383.4	1408	1408
New weighted performance	0	0	0	0
Temp new rating	1380.3	1383.4	1408	1408
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1380.3	1383.4	1408	1408
New K-factor	32	32	32	32
New floor	909.6	909.9	908	908

Item	Main	Standard
	0	0
	0	0
	0	0
	8	8
	5	5
	0	0
History	117	117

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
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	27	16.5	61.11	94.4	1265.1	1359.5
Standard	27	16.5	61.11	94.4	1265.1	1359.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1380.3	1383.4	1408	1408
2025-09-30	1380.3	1383.4	1408	1408
2025-09-01	1380.3	1383.4	1408	1408
2025-08-01	1380.3	1383.4	1408	1408
2025-07-01	1380.3	1383.4	1408	1408
2025-06-01	1380.3	1383.4	1408	1408
2025-05-01	1380.3	1383.4	1408	1408
2025-04-01	1380.3	1383.4	1408	1408
2025-03-01	1380.3	1383.4	1408	1408
2025-02-01	1380.3	1383.4	1408	1408
2025-01-01	1379.9	1383.4	1408	1408
2024-12-01	1379.9	1383.4	1408	1408
2024-11-01	1379.9	1383.4	1408	1408
2024-10-01	1379.9	1383.4	1408	1408
2024-09-01	1379.9	1383.4	1408	1408
2024-08-01	1379.9	1383.4	1408	1408
2024-07-01	1379.9	1383.4	1408	1408
2024-09-01	1379.9	1383.4	1408	1408
2024-05-01	1379.9	1383.4	1408	1408
2024-04-01	1379.9	1383.4	1408	1408
2024-03-01	1379.9	1383.4	1408	1408
2024-02-01	1379.9	1383.4	1408	1408
2024-01-01	1379.9	1383.4	1408	1408
2023-12-01	1379.9	1377.2	1408	1408

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	2023 Tuks Open Chess Tournament (Braille)	2023-10-07	2023-10-07	Standard	Tshwane (GTP)	4	4	2.5	Yes	Analysis
2	ANIME @ Play Chess 2023 (Braille)	2023-08-12	2023-08-12	Standard	Ekurhuleni (GE)	4	4	2	Yes	Analysis
3	Ekurhuleni Chess Springs Club Open 2022 (F)	2022-09-03	2022-09-03	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
4	2019 South African Braille Championship	2020-01-11	2020-01-12	Standard	4 Knights (4K)	5	5	3	Yes	Analysis
5	2019 Gauteng Braille Open	2019-10-26	2019-10-26	Standard	Tshwane (GTP)	4	4	2	Yes	Analysis
6	2019 SWVG Arnold Classic (Blind)	2019-05-18	2019-05-18	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2019 South African Braille Championship				Tournament Ekurhuleni Chess Springs Club Open 2022
		date 2020-01-12	rnd 5	type Standard	result 1	date 2022-09-03	rnd 4	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Roberts, MA (Mario)
2	2	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 2	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent De Nobrega, FP (Florindo)
3	2	Tournament ANIME @ Play Chess 2023				Tournament ANIME @ Play Chess 2023
		date 2023-08-12	rnd 1	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Grobbelaar, FJ (Fransiena)

#	Games	Start				End
1	5	Tournament 2019 South African Braille Championship				Tournament Ekurhuleni Chess Springs Club Open 2022
		date 2020-01-12	rnd 5	type Standard	result 1	date 2022-09-03	rnd 4	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Roberts, MA (Mario)
2	2	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 2	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent De Nobrega, FP (Florindo)
3	2	Tournament ANIME @ Play Chess 2023				Tournament ANIME @ Play Chess 2023
		date 2023-08-12	rnd 1	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Grobbelaar, FJ (Fransiena)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament 2019 South African Braille Championship				Tournament Ekurhuleni Chess Springs Club Open 2022
		date 2020-01-12	rnd 5	type Standard	result 1	date 2022-09-03	rnd 4	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Roberts, MA (Mario)
2	2	Tournament ANIME @ Play Chess 2023				Tournament ANIME @ Play Chess 2023
		date 2023-08-12	rnd 1	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Grobbelaar, FJ (Fransiena)
3	2	Tournament 2019 South African Braille Championship				Tournament 2019 South African Braille Championship
		date 2020-01-11	rnd 1	type Standard	result 1	date 2020-01-11	rnd 2	type Standard	result 1
		Opponent Smal, R (Reginald)				Opponent Roberts, MA (Mario)

#	Games	Start				End
1	5	Tournament 2019 South African Braille Championship				Tournament Ekurhuleni Chess Springs Club Open 2022
		date 2020-01-12	rnd 5	type Standard	result 1	date 2022-09-03	rnd 4	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Roberts, MA (Mario)
2	2	Tournament ANIME @ Play Chess 2023				Tournament ANIME @ Play Chess 2023
		date 2023-08-12	rnd 1	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Grib, J (Jessica)				Opponent Grobbelaar, FJ (Fransiena)
3	2	Tournament 2019 South African Braille Championship				Tournament 2019 South African Braille Championship
		date 2020-01-11	rnd 1	type Standard	result 1	date 2020-01-11	rnd 2	type Standard	result 1
		Opponent Smal, R (Reginald)				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 (Jessica)	4	3.5	318.8	4	3.5	318.8	0	0	0	0	0	0
1	Grib ,J (Jessica)	4	1064.1	1382.8	4	1054.2	1382.8	0	0	0	0	0	0
2	De Meyer ,B (Bruno)	3	0	-425	3	0	-425	0	0	0	0	0	0
2	De Meyer ,B (Bruno)	3	1602.5	1177.5	3	1608.4	1177.5	0	0	0	0	0	0
3	De Nobrega ,FP (Florindo)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	De Nobrega ,FP (Florindo)	3	1263.5	1121.8	3	1274.1	1121.8	0	0	0	0	0	0
4	Swanepoel ,K (Karel)	2	2	425	2	2	425	0	0	0	0	0	0
4	Swanepoel ,K (Karel)	2	1055.6	1480.6	2	1043.8	1480.6	0	0	0	0	0	0
5	Roberts ,MA (Mario Andre)	2	2	425	2	2	425	0	0	0	0	0	0
5	Roberts ,MA (Mario Andre)	2	1129.9	1554.9	2	1139.8	1554.9	0	0	0	0	0	0
6	Strydom ,BV (Brett)	2	2	425	2	2	425	0	0	0	0	0	0
6	Strydom ,BV (Brett)	2	1257.4	1682.4	2	1253.3	1682.4	0	0	0	0	0	0
7	Kruger ,FJ (Fransiena Jacoba)	2	2	425	2	2	425	0	0	0	0	0	0
7	Kruger ,FJ (Fransiena Jacoba)	2	1207.8	1632.8	2	1213.1	1632.8	0	0	0	0	0	0
8	Joubert ,L (Luchelle)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Joubert ,L (Luchelle)	2	1536.1	1111.1	2	1538.4	1111.1	0	0	0	0	0	0
9	Grib ,J (Johannes)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Grib ,J (Johannes)	2	1387.9	962.9	2	1394.1	962.9	0	0	0	0	0	0
10	Brown ,S (Sam)	1	1	425	1	1	425	0	0	0	0	0	0
10	Brown ,S (Sam)	1	1204.3	1629.3	1	1205.3	1629.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Grove, IJ (Izak Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms