Chess South Africa Ratings Database

PLAYER PAGE

Personal

Grootboom, EE (Elrich Everel)

Chess SA id

177011444

FIDE id

Date of birth

1977-04-17 (Adult)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

PA,NI

Chess SA registered

Last active game

2025-08-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1666.4	1705.1	1588.7	1675.5
Raw rating	1666.4	1705.1	1588.7	1675.5
Weighted rating	1657.1	1704	1581.6	1675.5
Weighted performance	1457.8	1500.5	0	0
Floor	1195.2	1230.7	1175.5	1175.5
K-factor	28	28	28	28
Min/Max rating change allowed	85.3	80.7	95.3	84.2
Highest rating	1695.2 2023-10-01	1730.7 2024-06-01	1675.5 2019-04-01	1675.5 2019-04-01
Highest raw rating	1695.2 2023-10-01	1730.7 2024-06-01	1675.5 2020-01-01	1675.5 2024-02-01
Highest weighted rating	1695.2 2023-12-01	1730.7 2024-10-01	1675.5 2019-04-01	1675.5 2019-04-01
Highest weighted performance	1656.4 2019-02-01	1660.5 2019-02-01	1298 2023-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1666.4	1705.1	1588.7	1675.5
Analysis
Rating	1666.4	1705.1	1588.7	1675.5
Raw rating	1666.4	1705.1	1588.7	1675.5
Weighted rating	1657.1	1704	1581.6
Weighted performance	1457.8	1500.5	0
K-factor	28	28	28	28
Floor	1195.2	1230.7	1175.5	1175.5
Max/Min rating change allowed	85.3	80.7	95.3	84.2
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	1666.4	1705.1	1588.7	1675.5
New weighted rating	1657.7	1704	1582	1675.5
New weighted performance	1448.5	1490.8	0	0
Temp new rating	1666.4	1705.1	1588.7	1675.5
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1666.4	1705.1	1588.7	1675.5
New K-factor	28	28	28	28
New floor	1195.2	1230.7	1175.5	1175.5

Item	Main	Standard	Rapid
	0	0	0
	10	10	0
	15	10	5
	10	4	6
	0	0	0
	0	0	0
History	281	270	11

Games since
	Main 31	Standard 20		Rapid 11		Blitz 0
Gender	Male
Age group	Adult
Region	Ekurhuleni (GE)
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	10	8	80	255	1392.6	1647.6
Standard	10	8	80	255	1392.6	1647.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	68	33.5	49.26	-6.2	1631.8	1625.5
Standard	57	28.5	50	0	1676.2	1676.2
Rapid	11	5	45.45	-38.6	1401.4	1362.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1666.4	1705.1	1588.7	1675.5
2025-09-30	1666.4	1705.1	1588.7	1675.5
2025-09-01	1659.4	1704	1588.7	1675.5
2025-08-01	1659.4	1704	1588.7	1675.5
2025-07-01	1659.4	1704	1588.7	1675.5
2025-06-01	1659.4	1704	1588.7	1675.5
2025-05-01	1659.4	1704	1588.7	1675.5
2025-04-01	1659.4	1704	1588.7	1675.5
2025-03-01	1659.4	1703.9	1588.7	1675.5
2025-02-01	1658.9	1703.6	1588.3	1675.5
2025-01-01	1639.8	1699.3	1555.4	1675.5
2024-12-01	1639.8	1699.3	1555.4	1675.5
2024-11-01	1639.8	1699.3	1555.4	1675.5
2024-10-01	1639.8	1699.3	1555.4	1675.5
2024-09-01	1639.8	1699.3	1555.4	1675.5
2024-08-01	1639.8	1699.3	1555.4	1675.5
2024-07-01	1639.8	1699.3	1555.4	1675.5
2024-09-01	1691.5	1730.7	1604.4	1675.5
2024-05-01	1673.1	1710.5	1604.4	1675.5
2024-04-01	1673.1	1710.5	1604.4	1675.5
2024-03-01	1673.1	1710.5	1604.4	1675.5
2024-02-01	1673.1	1710.5	1604.4	1675.5
2024-01-01	1673.1	1710.5	1604.4	1675.5
2023-12-01	1664	1700.3	1604.4	1675.5

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	East Rand Chess Club Open 2025 (A)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
2	East Rand Chess Club Open 2025 (A)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	East Rand Chess Club Open 2025 (A)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
2	East Rand Chess Club Open 2025 (A)	2025-08-09	2025-08-09	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
3	Chess Power House June Open 2024 (A)	2024-06-23	2024-06-23	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
4	Boksburg Rapid 2024 (A)	2024-05-14	2024-06-11	Rapid	Ekurhuleni (GE)	5	5	2	Yes	Analysis
5	Chess Power House May Open 2024 (A)	2024-05-25	2024-05-25	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
6	Chess Power House Festive Rapid 2023 (B)	2023-12-15	2023-12-15	Rapid	Johannesburg Metro (GJM)	6	6	3	Yes	Analysis
7	Chess Power House Feb RR 2023 (C)	2023-02-18	2023-02-18	Standard	Johannesburg Metro (GJM)	5	4	3	Yes	Analysis
8	Heidelberg Open 2020 (Prestige)	2020-01-31	2020-02-02	Standard	Sedibeng (GSV)	5	4	1.5	Yes	Analysis
9	2019 Inter Region Chess Championships	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	5	3	Yes	Analysis
10	Chess Power House 2019 (B)	2019-08-24	2019-08-24	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
11	Chess Power House Closed 2019	2019-01-17	2019-02-28	Standard	Ekurhuleni (GE)	7	7	1.5	Yes	Analysis
12	2018 Inter Region Chess Championships	2018-12-21	2018-12-24	Standard	4 Knights (4K)	7	6	3.5	Yes	Analysis
13	South African Inter Regional Championships 2017	2018-01-09	2018-01-12	Standard	4 Knights (4K)	7	6	2	Yes	Analysis

#	Games	Start				End
1	10	Tournament East Rand Chess Club Open 2025				Tournament East Rand Chess Club Open 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 5	type Standard	result 0.5
		Opponent Cunniff, M (Morne)				Opponent Shen Yu, F (Frank)
2	5	Tournament Chess Power House Feb RR 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-02-18	rnd 2	type Standard	result 1	date 2023-12-15	rnd 1	type Rapid	result 1
		Opponent Mokomele, A (Andrew)				Opponent Molefe, K (Kgosiemang)
3	5	Tournament Chess Power House 2019				Tournament 2019 Inter Region Chess Championships
		date 2019-08-24	rnd 5	type Standard	result 1	date 2020-01-11	rnd 5	type Standard	result 0.5
		Opponent Mokwena, TK (Thato Kole)				Opponent Klaver, C (Cornelis)

#	Games	Start				End
1	5	Tournament East Rand Chess Club Open 2025				Tournament East Rand Chess Club Open 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 5	type Standard	result 0.5
		Opponent Cunniff, M (Morne)				Opponent Shen Yu, F (Frank)
2	5	Tournament Chess Power House 2019				Tournament 2019 Inter Region Chess Championships
		date 2019-08-24	rnd 5	type Standard	result 1	date 2020-01-11	rnd 5	type Standard	result 0.5
		Opponent Mokwena, TK (Thato Kole)				Opponent Klaver, C (Cornelis)
3	4	Tournament Chess Power House Feb RR 2023				Tournament Chess Power House Feb RR 2023
		date 2023-02-18	rnd 2	type Standard	result 1	date 2023-02-18	rnd 5	type Standard	result 0.5
		Opponent Mokomele, A (Andrew)				Opponent Felix, R (Raphael)

#	Games	Start				End
1	2	Tournament Chess Power House Festive Rapid 2023				Tournament Boksburg Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-05-14	rnd 1	type Rapid	result 1
		Opponent Mathabe, K (Kabelo)				Opponent Nhlapo, LR (Lekwa)
2	1	Tournament Boksburg Rapid 2024				Tournament Boksburg Rapid 2024
		date 2024-06-04	rnd 4	type Rapid	result 1	date 2024-06-04	rnd 4	type Rapid	result 1
		Opponent Gemmell, Z (Zac)				Opponent Gemmell, Z (Zac)
3	1	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 3	type Rapid	result 1	date 2023-12-15	rnd 3	type Rapid	result 1
		Opponent Ambrose, T (Thomas)				Opponent Ambrose, T (Thomas)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament East Rand Chess Club Open 2025				Tournament East Rand Chess Club Open 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Cunniff, M (Morne)				Opponent Robinson, M (Martin)
2	2	Tournament Chess Power House May Open 2024				Tournament Chess Power House May Open 2024
		date 2024-05-25	rnd 2	type Standard	result 1	date 2024-05-25	rnd 3	type Standard	result 1
		Opponent Snyckers, A (Adam)				Opponent Magagula, R (Raymond)
3	2	Tournament Chess Power House Festive Rapid 2023				Tournament Boksburg Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-05-14	rnd 1	type Rapid	result 1
		Opponent Mathabe, K (Kabelo)				Opponent Nhlapo, LR (Lekwa)

#	Games	Start				End
1	2	Tournament East Rand Chess Club Open 2025				Tournament East Rand Chess Club Open 2025
		date 2025-08-09	rnd 1	type Standard	result 1	date 2025-08-09	rnd 2	type Standard	result 1
		Opponent Cunniff, M (Morne)				Opponent Robinson, M (Martin)
2	2	Tournament Chess Power House May Open 2024				Tournament Chess Power House May Open 2024
		date 2024-05-25	rnd 2	type Standard	result 1	date 2024-05-25	rnd 3	type Standard	result 1
		Opponent Snyckers, A (Adam)				Opponent Magagula, R (Raymond)
3	2	Tournament 2019 Inter Region Chess Championships				Tournament 2019 Inter Region Chess Championships
		date 2020-01-10	rnd 3	type Standard	result 1	date 2020-01-10	rnd 4	type Standard	result 1
		Opponent Maluleke, PE (Pfumelani)				Opponent Jacobs, CL (Cavan)

#	Games	Start				End
1	2	Tournament Chess Power House Festive Rapid 2023				Tournament Boksburg Rapid 2024
		date 2023-12-15	rnd 6	type Rapid	result 1	date 2024-05-14	rnd 1	type Rapid	result 1
		Opponent Mathabe, K (Kabelo)				Opponent Nhlapo, LR (Lekwa)
2	1	Tournament Boksburg Rapid 2024				Tournament Boksburg Rapid 2024
		date 2024-06-04	rnd 4	type Rapid	result 1	date 2024-06-04	rnd 4	type Rapid	result 1
		Opponent Gemmell, Z (Zac)				Opponent Gemmell, Z (Zac)
3	1	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 3	type Rapid	result 1	date 2023-12-15	rnd 3	type Rapid	result 1
		Opponent Ambrose, T (Thomas)				Opponent Ambrose, T (Thomas)

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	Magagula ,R (Raymond)	3	2	141.7	2	2	425	1	0	-425	0	0	0
1	Magagula ,R (Raymond)	3	1739.8	1881.5	2	1757.8	2164.8	1	1773.9	1314.8	0	0	0
2	Jansen van Rensburg ,H (Hannes)	2	2	425	2	2	425	0	0	0	0	0	0
2	Jansen van Rensburg ,H (Hannes)	2	1200	1625	2	1200	1625	0	0	0	0	0	0
3	Cunniff ,M (Morne)	2	2	425	2	2	425	0	0	0	0	0	0
3	Cunniff ,M (Morne)	2	1195.9	1620.9	2	1205.2	1620.9	0	0	0	0	0	0
4	Buba ,V (Vukile)	2	1	0	2	1	0	0	0	0	0	0	0
4	Buba ,V (Vukile)	2	1767	1767	2	1762.7	1767	0	0	0	0	0	0
5	Robinson ,M (Martin)	2	2	425	2	2	425	0	0	0	0	0	0
5	Robinson ,M (Martin)	2	1200	1625	2	1200	1625	0	0	0	0	0	0
6	Oberholzer ,F (Francois)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
6	Oberholzer ,F (Francois)	2	2090	1877.5	2	2091.3	1877.5	0	0	0	0	0	0
7	Shen Yu ,F (Frank)	2	1	0	2	1	0	0	0	0	0	0	0
7	Shen Yu ,F (Frank)	2	1599.9	1599.9	2	1585.3	1599.9	0	0	0	0	0	0
8	Buthelezi ,S (Simphiwe)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Buthelezi ,S (Simphiwe)	1	1625.9	1200.9	1	1551.8	1200.9	0	0	0	0	0	0
9	Flores Bartoli ,A (Andrew)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Flores Bartoli ,A (Andrew)	1	1656.8	1231.8	1	1656.8	1231.8	0	0	0	0	0	0
10	Salem ,A (Abdarahim)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Salem ,A (Abdarahim)	1	1755.7	1330.7	1	1722.4	1330.7	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

Grootboom, EE (Elrich Everel)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms