Chess South Africa Ratings Database

PLAYER PAGE

Personal

Groenewaldt, O (Orren)

Chess SA id

1090111409

FIDE id

Date of birth

2009-04-16 (U18)

Gender

Male

Region

Frances Baard (NCF)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-02-09

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1247	1240.1	1219.8	1206.4
Raw rating	1247	1240.1	1219.8	1206.4
Weighted rating	1245.2	1237.5	1216.2	1206.4
Weighted performance	937	866.1	0	0
Floor	784.2	779.9	719.8	706.4
K-factor	36	36	36	36
Min/Max rating change allowed	155.1	156.6	161.2	164.3
Highest rating	1298.3 2022-03-01	1293.6 2022-03-01	1283.9 2024-09-01	1230.8 2022-06-01
Highest raw rating	1284.2 2022-04-01	1279.9 2022-04-01	1219.8 2024-10-01	1206.4 2024-02-01
Highest weighted rating	1284.2 2024-03-01	1279.9 2024-03-01	1213.8 2025-08-01	1206.4 2024-06-01
Highest weighted performance	1298.3 2022-03-01	1293.6 2022-03-01	1283.9 2024-09-01	1230.8 2022-06-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1247	1240.1	1219.8	1206.4
Analysis
Rating	1247	1240.1	1219.8	1206.4
Raw rating	1247	1240.1	1219.8	1206.4
Weighted rating	1245.2	1237.5	1216.2
Weighted performance	937	866.1	0
K-factor	36	36	36	36
Floor	784.2	779.9	719.8	706.4
Max/Min rating change allowed	155.1	156.6	161.2	164.3
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	1247	1240.1	1219.8	1206.4
New weighted rating	1245.2	1237.5	1216.8	1206.4
New weighted performance	930.2	859.3	0	0
Temp new rating	1247	1240.1	1219.8	1206.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1247	1240.1	1219.8	1206.4
New K-factor	36	36	36	36
New floor	784.2	779.9	719.8	706.4

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	6	6	0	0
	15	9	6	0
	0	0	0	0
	27	20	0	7
	14	14	0	0
History	92	79	6	7

Games since
	Main 21	Standard 15		Rapid 6		Blitz 0
Gender	Male
Age group	U18
Region	Frances Baard (NCF)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	6	2.5	41.67	-70.8	1190.6	1119.8
Standard	6	2.5	41.67	-70.8	1190.6	1119.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	92	49	53.26	27.7	1185.3	1213
Standard	79	42	53.16	26.9	1182.1	1209
Rapid	6	3	50	0	1264.7	1264.7
Blitz	7	4	57.14	60.7	1152.5	1213.2

Date	Main	Standard	Rapid	Blitz
2025-11-01	1247	1240.1	1219.8	1206.4
2025-09-30	1247	1240.1	1219.8	1206.4
2025-09-01	1247	1240.1	1219.8	1206.4
2025-08-01	1247	1240.1	1219.8	1206.4
2025-07-01	1247	1240.1	1219.8	1206.4
2025-06-01	1247	1240.1	1219.8	1206.4
2025-05-01	1247	1240.1	1219.8	1206.4
2025-04-01	1247	1240.1	1219.8	1206.4
2025-03-01	1245.7	1238.6	1219.8	1206.4
2025-02-01	1247.8	1241	1219.8	1206.4
2025-01-01	1240.9	1228.5	1219.8	1206.4
2024-12-01	1240.9	1228.5	1219.8	1206.4
2024-11-01	1240.9	1228.5	1219.8	1206.4
2024-10-01	1240.9	1228.5	1219.8	1206.4
2024-09-01	1236.4	1228.5	1200	1206.4
2024-08-01	1236.4	1228.5	1200	1206.4
2024-07-01	1236.4	1228.5	1200	1206.4
2024-09-01	1236.4	1228.5	1200	1206.4
2024-05-01	1236.4	1228.5	1200	1206.4
2024-04-01	1236.4	1228.5	1200	1206.4
2024-03-01	1276.4	1278.9	1200	1206.4
2024-02-01	1267.4	1268.1	1200	1206.4
2024-01-01	1267.4	1268.1	1200	1206.4
2023-12-01	1267.4	1268.1	1200	1206.4

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	CT Metro North Schools Chess Individual Trials 2025 (U17 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	CT Metro North Schools Chess Individual Trials 2025 (U17 Open)	2025-02-08	2025-02-09	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
2	CBC Rapid Chess Tournament 2024 (U16)	2024-09-14	2024-09-14	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
3	Cape Town Metro Schools Chess Closed Individuals 2024 (U15 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
4	North District School Trials 2024 (U15 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	3	2	Yes	Analysis
5	FB Open Development Tournament 2022 (B)	2022-09-17	2022-09-17	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
6	NC Youth Day Open Blitz 2022 (C)	2022-06-18	2022-06-18	Blitz	Frances Baard (NCF)	8	7	4	Yes	Analysis
7	Kimberley Chess Club Open 2022 (U7-U13)	2022-04-30	2022-04-30	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
8	Moja Open 2022 (D)	2022-03-19	2022-03-20	Standard	Frances Baard (NCF)	5	5	4	Yes	Analysis
9	Kimberley Chess Club Open 2022 (C)	2022-01-21	2022-01-22	Standard	Frances Baard (NCF)	5	5	4	Yes	Analysis
10	Northern Cape Schools Chess Provincial Eliminations 2021 (Boys)	2021-11-05	2021-11-05	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
11	NC Open 2021 (C)	2021-10-22	2021-10-23	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
12	Northern Cape Open Fundraiser 2021 (B)	2021-03-20	2021-03-20	Standard	Frances Baard (NCF)	5	4	1	Yes	Analysis
13	NC Open Schools 2020 (U11 Open)	2020-02-29	2020-02-29	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
14	Kimberley Chess Club Christmas Open 2019 (D)	2019-12-06	2019-12-07	Standard	Frances Baard (NCF)	5	5	4	Yes	Analysis
15	Kimberley Chess Club Schools` Open 2019 (U11 Open)	2019-07-20	2019-07-20	Standard	Frances Baard (NCF)	5	5	4	Yes	Analysis
16	Inter Regional Chess Championship 2019 (U12)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	4	1	Yes	Analysis
17	Frances Baard IRCC Trials 2019 (U12+U14 Boys)	2019-04-13	2019-04-13	Standard	Frances Baard (NCF)	5	4	3	Yes	Analysis
18	Moja Chess Club FIDE Open 2019 (C)	2019-03-21	2019-03-24	Standard	Frances Baard (NCF)	7	7	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament Kimberley Chess Club Open 2022				Tournament Moja Open 2022
		date 2022-01-22	rnd 3	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Daniels, P (Peyton)				Opponent Changara, A (Alvern Takura)
2	5	Tournament Kimberley Chess Club Christmas Open 2019				Tournament NC Open Schools 2020
		date 2019-12-07	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Ahjum, AXE (Annabelle)				Opponent Siyoko, B (Bonakele)
3	4	Tournament Moja Open 2022				Tournament Kimberley Chess Club Open 2022
		date 2022-03-20	rnd 4	type Standard	result 1	date 2022-04-30	rnd 2	type Standard	result 1
		Opponent Modisane, R (Rema)				Opponent Vermeulen, J (Johannes)

#	Games	Start				End
1	5	Tournament Kimberley Chess Club Open 2022				Tournament Moja Open 2022
		date 2022-01-22	rnd 3	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Daniels, P (Peyton)				Opponent Changara, A (Alvern Takura)
2	5	Tournament Kimberley Chess Club Christmas Open 2019				Tournament NC Open Schools 2020
		date 2019-12-07	rnd 4	type Standard	result 1	date 2020-02-29	rnd 3	type Standard	result 1
		Opponent Ahjum, AXE (Annabelle)				Opponent Siyoko, B (Bonakele)
3	4	Tournament Moja Open 2022				Tournament Kimberley Chess Club Open 2022
		date 2022-03-20	rnd 4	type Standard	result 1	date 2022-04-30	rnd 2	type Standard	result 1
		Opponent Modisane, R (Rema)				Opponent Vermeulen, J (Johannes)

#	Games	Start				End
1	1	Tournament CBC Rapid Chess Tournament 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-09-14	rnd 6	type Rapid	result 1	date 2024-09-14	rnd 6	type Rapid	result 1
		Opponent Arluck, M (Matthew)				Opponent Arluck, M (Matthew)
2	1	Tournament CBC Rapid Chess Tournament 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-09-14	rnd 3	type Rapid	result 1	date 2024-09-14	rnd 3	type Rapid	result 1
		Opponent Gabriel, R (Romeo)				Opponent Gabriel, R (Romeo)
3	1	Tournament CBC Rapid Chess Tournament 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-09-14	rnd 1	type Rapid	result 1	date 2024-09-14	rnd 1	type Rapid	result 1
		Opponent O`connell, G (Geordan)				Opponent O`connell, G (Geordan)

#	Games	Start				End
1	2	Tournament NC Youth Day Open Blitz 2022				Tournament NC Youth Day Open Blitz 2022
		date 2022-06-18	rnd 4	type Blitz	result 1	date 2022-06-18	rnd 5	type Blitz	result 1
		Opponent May, K (Kieran Taine)				Opponent Ahjum, AXE (Annabelle)
2	1	Tournament NC Youth Day Open Blitz 2022				Tournament NC Youth Day Open Blitz 2022
		date 2022-06-18	rnd 7	type Blitz	result 1	date 2022-06-18	rnd 7	type Blitz	result 1
		Opponent May, K (Kieran Taine)				Opponent May, K (Kieran Taine)
3	1	Tournament NC Youth Day Open Blitz 2022				Tournament NC Youth Day Open Blitz 2022
		date 2022-06-18	rnd 1	type Blitz	result 1	date 2022-06-18	rnd 1	type Blitz	result 1
		Opponent May, K (Kieran Taine)				Opponent May, K (Kieran Taine)

#	Games	Start				End
1	5	Tournament Kimberley Chess Club Open 2022				Tournament Moja Open 2022
		date 2022-01-22	rnd 3	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Daniels, P (Peyton)				Opponent Changara, A (Alvern Takura)
2	4	Tournament Moja Open 2022				Tournament Kimberley Chess Club Open 2022
		date 2022-03-20	rnd 4	type Standard	result 1	date 2022-04-30	rnd 2	type Standard	result 1
		Opponent Modisane, R (Rema)				Opponent Vermeulen, J (Johannes)
3	3	Tournament NC Youth Day Open Blitz 2022				Tournament FB Open Development Tournament 2022
		date 2022-06-18	rnd 7	type Blitz	result 1	date 2022-09-17	rnd 2	type Standard	result 1
		Opponent May, K (Kieran Taine)				Opponent Kgosimolao, K (Kopano)

#	Games	Start				End
1	5	Tournament Kimberley Chess Club Open 2022				Tournament Moja Open 2022
		date 2022-01-22	rnd 3	type Standard	result 1	date 2022-03-19	rnd 2	type Standard	result 1
		Opponent Daniels, P (Peyton)				Opponent Changara, A (Alvern Takura)
2	4	Tournament Moja Open 2022				Tournament Kimberley Chess Club Open 2022
		date 2022-03-20	rnd 4	type Standard	result 1	date 2022-04-30	rnd 2	type Standard	result 1
		Opponent Modisane, R (Rema)				Opponent Vermeulen, J (Johannes)
3	3	Tournament NC Open 2021				Tournament Northern Cape Schools Chess Provincial Eliminations 2021
		date 2021-10-23	rnd 5	type Standard	result 1	date 2021-11-05	rnd 2	type Standard	result 1
		Opponent Saul, L (Lihle)				Opponent Daniels, E (Elroy)

#	Games	Start				End
1	1	Tournament CBC Rapid Chess Tournament 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-09-14	rnd 6	type Rapid	result 1	date 2024-09-14	rnd 6	type Rapid	result 1
		Opponent Arluck, M (Matthew)				Opponent Arluck, M (Matthew)
2	1	Tournament CBC Rapid Chess Tournament 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-09-14	rnd 3	type Rapid	result 1	date 2024-09-14	rnd 3	type Rapid	result 1
		Opponent Gabriel, R (Romeo)				Opponent Gabriel, R (Romeo)
3	1	Tournament CBC Rapid Chess Tournament 2024				Tournament CBC Rapid Chess Tournament 2024
		date 2024-09-14	rnd 1	type Rapid	result 1	date 2024-09-14	rnd 1	type Rapid	result 1
		Opponent O`connell, G (Geordan)				Opponent O`connell, G (Geordan)

#	Games	Start				End
1	2	Tournament NC Youth Day Open Blitz 2022				Tournament NC Youth Day Open Blitz 2022
		date 2022-06-18	rnd 4	type Blitz	result 1	date 2022-06-18	rnd 5	type Blitz	result 1
		Opponent May, K (Kieran Taine)				Opponent Ahjum, AXE (Annabelle)
2	1	Tournament NC Youth Day Open Blitz 2022				Tournament NC Youth Day Open Blitz 2022
		date 2022-06-18	rnd 7	type Blitz	result 1	date 2022-06-18	rnd 7	type Blitz	result 1
		Opponent May, K (Kieran Taine)				Opponent May, K (Kieran Taine)
3	1	Tournament NC Youth Day Open Blitz 2022				Tournament NC Youth Day Open Blitz 2022
		date 2022-06-18	rnd 1	type Blitz	result 1	date 2022-06-18	rnd 1	type Blitz	result 1
		Opponent May, K (Kieran Taine)				Opponent May, K (Kieran Taine)

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	Ahjum ,AXE (Annabelle)	4	3	212.5	2	2	425	0	0	0	2	1	0
1	Ahjum ,AXE (Annabelle)	4	1139.5	1352	2	1115.3	1564.5	0	0	0	2	1070.4	1139.5
2	Kgosimolao ,K (Kopano)	4	1	-212.5	2	1	0	0	0	0	2	0	-425
2	Kgosimolao ,K (Kopano)	4	1212.6	1000.1	2	1199.4	1212.6	0	0	0	2	1200	787.6
3	Ross ,E (Ebenezer)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Ross ,E (Ebenezer)	3	1344	1202.4	3	1339.6	1202.4	0	0	0	0	0	0
4	Daniels ,P (Peyton)	3	3	425	3	3	425	0	0	0	0	0	0
4	Daniels ,P (Peyton)	3	1152.6	1577.6	3	1146.2	1577.6	0	0	0	0	0	0
5	May ,K (Kieran Taine)	3	3	425	0	0	0	0	0	0	3	3	425
5	May ,K (Kieran Taine)	3	1106.5	1531.5	0	0	0	0	0	0	3	1200	1531.5
6	Lekhwi ,N (Nazia)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
6	Lekhwi ,N (Nazia)	2	1075.6	1288.1	2	1048	1288.1	0	0	0	0	0	0
7	Mphuthi ,U (U-Nae)	2	1	0	2	1	0	0	0	0	0	0	0
7	Mphuthi ,U (U-Nae)	2	1208.2	1208.2	2	1201.5	1208.2	0	0	0	0	0	0
8	Botha ,J (Jan-Petrus)	2	1	0	2	1	0	0	0	0	0	0	0
8	Botha ,J (Jan-Petrus)	2	1192.8	1192.8	2	1191.1	1192.8	0	0	0	0	0	0
9	Ashworth ,DA (Dylan Adrian)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Ashworth ,DA (Dylan Adrian)	1	1211.9	786.9	1	1232.4	786.9	0	0	0	0	0	0
10	Coetzee ,E (Erik)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Coetzee ,E (Erik)	1	1200	775	1	1200	775	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

Groenewaldt, O (Orren)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms