Chess South Africa Ratings Database

PLAYER PAGE

Personal

Green, GAO (Guy Andrew Orpen)

Chess SA id

195011065

FIDE id

Date of birth

1995-09-23 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1636.3	1633.1	1581	1567.4
Raw rating	1636.3	1633.1	1581	1567.4
Weighted rating	1545	1540.8	1581	1567.4
Weighted performance	1202.8	956.9	0	0
Floor	1136.3	1133.1	1081	1081
K-factor	28	28	32	32
Min/Max rating change allowed	89.1	89.5	96.4	98.2
Highest rating	1636.3 2025-11-01	1633.1 2025-11-01	1581 2018-09-01	1581 2018-02-01
Highest raw rating	1636.3 2025-11-01	1633.1 2025-11-01	1581 2024-02-01	1581 2018-02-01
Highest weighted rating	1584.4 2018-01-01	1584.4 2018-01-01	1581 2018-09-01	1581 2018-02-01
Highest weighted performance	1520 2025-06-01	1521.9 2018-03-01	1200 2024-02-01	1415.4 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1636.3	1633.1	1581	1567.4
Analysis
Rating	1636.3	1633.1	1581	1567.4
Raw rating	1636.3	1633.1	1581	1567.4
Weighted rating	1545	1540.8	1581
Weighted performance	1202.8	956.9	0
K-factor	28	28	32	32
Floor	1136.3	1133.1	1081	1081
Max/Min rating change allowed	89.1	89.5	96.4	98.2
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	1636.3	1633.1	1581	1567.4
New weighted rating	1553.7	1549.7	1581	1567.4
New weighted performance	1193.8	947.9	0	0
Temp new rating	1636.3	1633.1	1581	1567.4
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1636.3	1633.1	1581	1567.4
New K-factor	28	28	32	32
New floor	1136.3	1133.1	1081	1081

Item	Main	Standard	Blitz
	0	0	0
	25	20	5
	8	8	0
	4	4	0
	8	8	0
	0	0	0
History	502	485	17

Games since
	Main 33	Standard 28		Rapid 0		Blitz 5
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
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	25	13	52	17	1665.6	1682.6
Standard	20	11	55	42.5	1660.4	1702.9
Rapid	0	0	0	0	0	0
Blitz	5	2	40	-85	1686.3	1601.3
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	85	43.5	51.18	10	1508.5	1518.5
Standard	74	38	51.35	11.5	1509.7	1521.2
Rapid	0	0	0	0	0	0
Blitz	11	5.5	50	0	1499.9	1499.9

Date	Main	Standard	Rapid	Blitz
2025-11-01	1636.3	1633.1	1581	1567.4
2025-09-30	1584.4	1584.4	1581	1567.4
2025-09-01	1584.4	1584.4	1581	1567.4
2025-08-01	1584.4	1584.4	1581	1567.4
2025-07-01	1584.4	1584.4	1581	1567.4
2025-06-01	1584.4	1584.4	1581	1567.4
2025-05-01	1521.7	1514.6	1581	1567.3
2025-04-01	1521.7	1514.6	1581	1565.7
2025-03-01	1507.8	1500.6	1581	1567.6
2025-02-01	1507.8	1500.6	1581	1567.6
2025-01-01	1507.8	1500.6	1581	1567.6
2024-12-01	1507.8	1500.6	1581	1567.6
2024-11-01	1507.8	1500.6	1581	1567.6
2024-10-01	1507.8	1500.6	1581	1567.6
2024-09-01	1499.4	1493.3	1581	1567.6
2024-08-01	1499.4	1493.3	1581	1567.6
2024-07-01	1499.4	1493.3	1581	1567.6
2024-09-01	1499.4	1493.3	1581	1567.6
2024-05-01	1499.4	1493.3	1581	1567.6
2024-04-01	1499.4	1493.3	1581	1567.6
2024-03-01	1499.4	1493.3	1581	1567.6
2024-02-01	1499.4	1493.3	1581	1567.6
2024-01-01	1499.4	1493.3	1581	1567.6
2023-12-01	1499.4	1493.3	1581	1567.6

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	Cape Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	6	5.5	Yes	Analysis
2	Moja Chess Extravaganza 2025 (B)	2025-04-26	2025-05-01	Standard	Johannesburg Metro (GJM)	9	9	4.5	Yes	Analysis
3	Cape Town Open Chess Festival 2025 (A)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	1	Yes	Analysis
4	Cape Town Open Chess Festival 2025 (Team Blitz)	2025-03-21	2025-03-21	Blitz	Cape Town (WCT)	6	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (C)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	6	5.5	Yes	Analysis
2	Moja Chess Extravaganza 2025 (B)	2025-04-26	2025-05-01	Standard	Johannesburg Metro (GJM)	9	9	4.5	Yes	Analysis
3	Cape Town Open Chess Festival 2025 (A)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	5	1	Yes	Analysis
4	Cape Town Open Chess Festival 2025 (Team Blitz)	2025-03-21	2025-03-21	Blitz	Cape Town (WCT)	6	5	2	Yes	Analysis
5	CT League 2024 (B)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	1	1	Yes	Analysis
6	CT League 2024 (D-Playoffs)	2024-09-07	2024-09-08	Standard	Cape Town (WCT)	5	3	0.5	Yes	Analysis
7	CT League 2024 (D)	2024-08-03	2024-08-03	Standard	Cape Town (WCT)	6	4	2.5	Yes	Analysis
8	WP Club League 2023 (C)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	4	3.5	Yes	Analysis
9	2022 Western Province Club League (C)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	5	3	Yes	Analysis
10	2022 Cape Of Good Hope Open (Championship)	2022-01-28	2022-01-30	Standard	Cape Town (WCT)	6	3	0	Yes	Analysis
11	2019 National Club Chess Championships (A)	2019-09-27	2019-09-29	Standard	Cape Town (WCT)	6	3	1.5	Yes	Analysis
12	2019 Western Province League (Premier)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	2	0	Yes	Analysis
13	2019 Western Province League (B)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	3	0	Yes	Analysis
14	2018 Western Province League (Premier)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	2	1	Yes	Analysis
15	2018 Western Province League (B)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	3	2	Yes	Analysis
16	2018 USSA Championship (Open)	2018-07-02	2018-07-06	Standard	Gert Sibande (MGS)	9	9	4.5	Yes	Analysis
17	2018 Western Province Open (Prestige)	2018-03-02	2018-03-04	Standard	Cape Town (WCT)	6	6	3.5	Yes	Analysis
18	WP Team Blitz 2018 (B)	2018-02-17	2018-02-17	Blitz	Cape Town (WCT)	7	6	3.5	Yes	Analysis
19	2018 Cape of Good Hope Open Chess Championships (Prestige)	2018-01-26	2018-01-28	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis

#	Games	Start				End
1	8	Tournament 2022 Western Province Club League				Tournament CT League 2024
		date 2022-09-17	rnd 9	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Bester, C (Christoff)				Opponent Maruma, KB (Kamogelo)
2	6	Tournament Cape Town Chess Federation Club League 2025				Tournament Cape Town Chess Federation Club League 2025
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-09-20	rnd 10	type Standard	result 1
		Opponent Hjelden, E (Einwald)				Opponent Jacobs, DE (Darryl)
3	4	Tournament 2018 Western Province Open				Tournament 2018 Western Province Open
		date 2018-03-03	rnd 2	type Standard	result 0.5	date 2018-03-04	rnd 5	type Standard	result 1
		Opponent Thakersee, R (Rishay)				Opponent Olkers, LP (Lleyton)

#	Games	Start				End
1	8	Tournament 2022 Western Province Club League				Tournament CT League 2024
		date 2022-09-17	rnd 9	type Standard	result 1	date 2024-08-03	rnd 4	type Standard	result 1
		Opponent Bester, C (Christoff)				Opponent Maruma, KB (Kamogelo)
2	4	Tournament 2018 Western Province Open				Tournament 2018 Western Province Open
		date 2018-03-03	rnd 2	type Standard	result 0.5	date 2018-03-04	rnd 5	type Standard	result 1
		Opponent Thakersee, R (Rishay)				Opponent Olkers, LP (Lleyton)
3	3	Tournament Moja Chess Extravaganza 2025				Tournament Moja Chess Extravaganza 2025
		date 2025-04-28	rnd 4	type Standard	result 1	date 2025-04-29	rnd 6	type Standard	result 1
		Opponent Machet, J (Jordan)				Opponent Bekker, J (Jason )

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament WP Team Blitz 2018				Tournament WP Team Blitz 2018
		date 2018-02-17	rnd 2	type Blitz	result 1	date 2018-02-17	rnd 4	type Blitz	result 0.5
		Opponent Snijders, G (Gerard)				Opponent Blows, KT (Kian)
2	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 2	type Blitz	result 1	date 2025-03-21	rnd 3	type Blitz	result 1
		Opponent Tjale, P (Phillipmaite)				Opponent Pick, BF (Bjorn Bjorn)
3	1	Tournament WP Team Blitz 2018				Tournament WP Team Blitz 2018
		date 2018-02-17	rnd 7	type Blitz	result 1	date 2018-02-17	rnd 7	type Blitz	result 1
		Opponent Ntukulela, B (Bafana)				Opponent Ntukulela, B (Bafana)

#	Games	Start				End
1	5	Tournament 2022 Western Province Club League				Tournament WP Club League 2023
		date 2022-09-17	rnd 9	type Standard	result 1	date 2023-09-02	rnd 10	type Standard	result 1
		Opponent Bester, C (Christoff)				Opponent Mthi, Y (Yamkela)
2	3	Tournament 2018 Western Province Open				Tournament 2018 Western Province Open
		date 2018-03-03	rnd 3	type Standard	result 1	date 2018-03-04	rnd 5	type Standard	result 1
		Opponent Sheldon, MB (Matthew)				Opponent Olkers, LP (Lleyton)
3	3	Tournament 2018 Cape of Good Hope Open Chess Championships				Tournament 2018 Cape of Good Hope Open Chess Championships
		date 2018-01-26	rnd 1	type Standard	result 1	date 2018-01-27	rnd 3	type Standard	result 1
		Opponent Visagie, JC (Joubert)				Opponent Nkosana, L (Luvuyo)

#	Games	Start				End
1	5	Tournament 2022 Western Province Club League				Tournament WP Club League 2023
		date 2022-09-17	rnd 9	type Standard	result 1	date 2023-09-02	rnd 10	type Standard	result 1
		Opponent Bester, C (Christoff)				Opponent Mthi, Y (Yamkela)
2	3	Tournament 2018 Western Province Open				Tournament 2018 Western Province Open
		date 2018-03-03	rnd 3	type Standard	result 1	date 2018-03-04	rnd 5	type Standard	result 1
		Opponent Sheldon, MB (Matthew)				Opponent Olkers, LP (Lleyton)
3	3	Tournament 2018 Cape of Good Hope Open Chess Championships				Tournament 2018 Cape of Good Hope Open Chess Championships
		date 2018-01-26	rnd 1	type Standard	result 1	date 2018-01-27	rnd 3	type Standard	result 1
		Opponent Visagie, JC (Joubert)				Opponent Nkosana, L (Luvuyo)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Cape Town Open Chess Festival 2025				Tournament Cape Town Open Chess Festival 2025
		date 2025-03-21	rnd 2	type Blitz	result 1	date 2025-03-21	rnd 3	type Blitz	result 1
		Opponent Tjale, P (Phillipmaite)				Opponent Pick, BF (Bjorn Bjorn)
2	2	Tournament WP Team Blitz 2018				Tournament WP Team Blitz 2018
		date 2018-02-17	rnd 2	type Blitz	result 1	date 2018-02-17	rnd 3	type Blitz	result 1
		Opponent Snijders, G (Gerard)				Opponent Mangoro, R (Richard)
3	1	Tournament WP Team Blitz 2018				Tournament WP Team Blitz 2018
		date 2018-02-17	rnd 7	type Blitz	result 1	date 2018-02-17	rnd 7	type Blitz	result 1
		Opponent Ntukulela, B (Bafana)				Opponent Ntukulela, B (Bafana)

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	Braaf ,J (Jiraan)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Braaf ,J (Jiraan)	2	1819.2	1394.2	2	1839.5	1394.2	0	0	0	0	0	0
2	Mncwabe ,M (Minenhle Junior)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Mncwabe ,M (Minenhle Junior)	2	1790.5	1365.5	2	1803.2	1365.5	0	0	0	0	0	0
3	Weideman ,J (Janko)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Weideman ,J (Janko)	2	1658.2	1233.2	2	1645.7	1233.2	0	0	0	0	0	0
4	Pick ,BF (Bjorn Bjorn)	2	1	0	1	0	-425	0	0	0	1	1	425
4	Pick ,BF (Bjorn Bjorn)	2	1728.8	1728.8	1	1736.1	1303.8	0	0	0	1	1756	2153.8
5	Mangoro ,R (Richard)	2	1	0	1	0	-425	0	0	0	1	1	425
5	Mangoro ,R (Richard)	2	1468.3	1468.3	1	1445.3	1043.3	0	0	0	1	1488.5	1893.3
6	Louw ,C (Carlo)	2	1	0	1	1	425	0	0	0	1	0	-425
6	Louw ,C (Carlo)	2	1506.6	1506.6	1	1463.6	1931.6	0	0	0	1	1482.6	1081.6
7	Pick ,DD (Deon Derick)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Pick ,DD (Deon Derick)	1	1812	1387	1	1844.2	1387	0	0	0	0	0	0
8	Frank ,D (Daniel)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Frank ,D (Daniel)	1	1525.4	1100.4	1	1525.4	1100.4	0	0	0	0	0	0
9	Allison ,J (James)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Allison ,J (James)	1	1678.4	1253.4	1	1643.1	1253.4	0	0	0	0	0	0
10	Ntukela ,A (Amzolele)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Ntukela ,A (Amzolele)	1	1651.4	1226.4	1	1632.2	1226.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Green, GAO (Guy Andrew Orpen)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms