Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jacobson, G (Gabriel)

Chess SA id

106085427

FIDE id

Date of birth

2006-05-02 (U20)

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

1657.4

Item	Main	Standard	Rapid	Blitz
Rating	1778.9	1757.8	1433.6	1200
Raw rating	1751.2	1718.6	1433.6	1200
Weighted rating	1778.9	1757.8	1420.5	1200
Weighted performance	1569.9	1570.2	1178.4	0
Floor	1313.1	1299.7	933.6	700
K-factor	24	28	32	36
Min/Max rating change allowed	75.6	79.2	118.9	165.8
Highest rating	1813.1 2024-12-01	1799.7 2024-12-01	1440.1 2024-07-01	1200 2018-10-01
Highest raw rating	1813.1 2024-12-01	1799.7 2024-12-01	1433.6 2024-08-01	1200 2024-02-01
Highest weighted rating	1778.9 2025-11-01	1757.8 2025-11-01	1408.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1781.4 2024-09-01	1771.4 2024-09-01	1440.1 2024-07-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.4	-0.4	0	0
New rating	1779.4	1757.4	1433.6	1200
Analysis
Rating	1778.9	1757.8	1433.6	1200
Raw rating	1751.2	1718.6	1433.6	1200
Weighted rating	1778.9	1757.8	1420.5
Weighted performance	1569.9	1570.2	1178.4
K-factor	24	28	32	36
Floor	1313.1	1299.7	933.6	700
Max/Min rating change allowed	75.6	79.2	118.9	165.8
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	1751.2	1718.6	1433.6	1200
New weighted rating	1779.4	1757.4	1423.6	1200
New weighted performance	1559.6	1559.8	1169.3	0
Temp new rating	1779.4	1757.4	1433.6	1200
Temp new rating +/-	0.4	-0.4	0	0
Final new rating +/-	0.4	-0.4	0	0
New rating	1779.4	1757.4	1433.6	1200
New K-factor	24	40	32	36
New floor	1313.1	1299.7	933.6	700

Item	Main	Standard	Rapid
	0	0	0
	17	17	0
	65	53	12
	58	52	6
	13	13	0
	11	0	11
History	175	141	34

Games since
	Main 88	Standard 76		Rapid 12		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	190		63		52
Male	181		62		51
U20	20		7		6
U20 Male	17		7		6
Standard
	RSA		Province		Region
Overall	212		63		53
Male	199		61		51
U20	26		8		6
U20 Male	21		8		6
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	17	6.5	38.24	-100	1761.4	1661.4
Standard	17	6.5	38.24	-100	1761.4	1661.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	170	107	62.94	110	1524.8	1634.8
Standard	141	91	64.54	123.6	1512.1	1635.7
Rapid	29	16	55.17	44	1586.6	1630.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1751.2	1718.6	1433.6	1200
2025-09-30	1791.6	1769.8	1433.6	1200
2025-09-01	1791.6	1769.8	1433.6	1200
2025-08-01	1791.6	1769.8	1433.6	1200
2025-07-01	1791.6	1769.8	1433.6	1200
2025-06-01	1791.6	1769.8	1433.6	1200
2025-05-01	1791.6	1769.8	1433.6	1200
2025-04-01	1813.1	1799.7	1433.6	1200
2025-03-01	1813.1	1799.7	1433.6	1200
2025-02-01	1813.1	1799.7	1433.6	1200
2025-01-01	1813.1	1799.7	1433.6	1200
2024-12-01	1813.1	1799.7	1433.6	1200
2024-11-01	1807.5	1790.7	1433.6	1200
2024-10-01	1807.5	1790.7	1433.6	1200
2024-09-01	1753.7	1719.6	1433.6	1200
2024-08-01	1753.7	1719.6	1433.6	1200
2024-07-01	1738.5	1719.6	1342.9	1200
2024-09-01	1694.8	1669.5	1342.9	1200
2024-05-01	1694.8	1669.5	1342.9	1200
2024-04-01	1689.8	1669.5	1297.9	1200
2024-03-01	1617.5	1600.6	1297.9	1200
2024-02-01	1592.9	1561.2	1297.9	1200
2024-01-01	1592.9	1561.2	1297.9	1200
2023-12-01	1592.9	1561.2	1297.9	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	Cape Town Chess Federation Club League 2025 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	8	2	Yes	Analysis
2	South African Junior Closed Chess Championships 2025 (U20 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4.5	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 (A)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	8	2	Yes	Analysis
2	South African Junior Closed Chess Championships 2025 (U20 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	4.5	Yes	Analysis
3	Paarl Boys' High Chess Festival 2024 (Elite)	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	5	4	Yes	Analysis
4	2024 South Africa National Schools Chess Championship (U18 Boys)	2024-09-27	2024-09-28	Standard	Nelson Mandela Bay (ENM)	7	7	5.5	Yes	Analysis
5	CT League 2024 (A)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	10	8	Yes	Analysis
6	Curro Durbanville Chess Rapid Open 2024 (Championship)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
7	2024 African Youth Chess Championship	2024-06-16	2024-06-22	Standard	Tshwane (GTP)	9	9	5	Yes	Analysis
8	Hermanus Chess Club Open 2024 (Championship)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	6	2	Yes	Analysis
9	Western Cape Inter Region Cup 2024 (U20 Boys)	2024-03-23	2024-03-24	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
10	Western Cape HS Individuals Championship 2024 (U18 Boys)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	4.5	Yes	Analysis
11	Cape Town Metro Schools Chess Closed Individuals 2024 (U18 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
12	CT Metro Central District Schools Chess Individuals Trials 2024 (U18 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	4.5	Yes	Analysis
13	Kraaifontein Open 2023 (Adanced)	2023-12-09	2023-12-10	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
14	Paarl Boys High Chess Festival 2023 (Elite Division)	2023-10-13	2023-10-14	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
15	WP Club League 2023 (A)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	2	0.5	Yes	Analysis
16	WP Club League 2023 (D PlayOffs)	2023-09-02	2023-09-09	Standard	Cape Town (WCT)	5	2	2	Yes	Analysis
17	WP Club League 2023 (D1)	2023-07-29	2023-08-19	Standard	Cape Town (WCT)	6	3	1.5	Yes	Analysis
18	Curro Durbanville Chess Open Rapid 2023 (Advanced)	2023-07-15	2023-07-15	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
19	WP Closed 2023 (U18+U20)	2023-06-16	2023-06-17	Standard	Cape Town (WCT)	6	6	5.5	Yes	Analysis
20	Western Cape HS Individuals 2023 (U17 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
21	Cape Town Open 2023 (Advanced)	2023-03-24	2023-03-26	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
22	Cape Town Metro Schools Chess Closed Individuals 2023 (U17 Boys)	2023-03-03	2023-03-04	Standard	Cape Town (WCT)	6	5	3.5	Yes	Analysis
23	Central District School Trials 2023 (U17 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
24	Cape of Good Hope Open 2023 (Intermediate)	2023-01-28	2023-01-29	Standard	Cape Town (WCT)	6	4	2	Yes	Analysis
25	2022 Western Province Club League (Premier)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	6	1	Yes	Analysis
26	2022 Western Province Club League (D)	2022-08-27	2022-10-01	Standard	Cape Town (WCT)	7	1	1	Yes	Analysis
27	2022 Cape Of Good Hope Open (Intrmediate)	2022-01-29	2022-01-30	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
28	Jacques Vuyo Le Roux Memorial Rapid 2021	2021-12-04	2021-12-04	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
29	CWP Youth Day Rapid 2021 (U16)	2021-06-16	2021-06-16	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
30	Curro Durbanville Chess Tournament 2019 (Premier)	2019-08-23	2019-08-24	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
31	WP District South 2018 (U13)	2018-02-01	2018-02-02	Standard	Cape Town (WCT)	6	0	0	No	Analysis
32	2018 Central District Trials (U13)	2018-02-02	2018-02-03	Standard	Cape Town (WCT)	6	0	0	No	Analysis

#	Games	Start				End
1	13	Tournament Western Cape HS Individuals 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-04-01	rnd 2	type Standard	result 1	date 2023-07-15	rnd 2	type Rapid	result 1
		Opponent Stalmeester, A (Aiden)				Opponent Allie, I (Ishmaeel)
2	9	Tournament 2024 South Africa National Schools Chess Championship				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-09-27	rnd 3	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Sera, G (Galaletsang)				Opponent Slabber, P (Pieter)
3	8	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Western Cape HS Individuals Championship 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-21	rnd 4	type Standard	result 1
		Opponent Bowers, C (Chad)				Opponent Lau, C (Callum)

#	Games	Start				End
1	12	Tournament Western Cape HS Individuals 2023				Tournament WP Club League 2023
		date 2023-04-01	rnd 2	type Standard	result 1	date 2023-08-19	rnd 4	type Standard	result 1
		Opponent Stalmeester, A (Aiden)				Opponent Mdini, A (Ayakha)
2	9	Tournament 2024 South Africa National Schools Chess Championship				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-09-27	rnd 3	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Sera, G (Galaletsang)				Opponent Slabber, P (Pieter)
3	8	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Western Cape HS Individuals Championship 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-21	rnd 4	type Standard	result 1
		Opponent Bowers, C (Chad)				Opponent Lau, C (Callum)

#	Games	Start				End
1	3	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 4	type Rapid	result 1	date 2023-07-15	rnd 6	type Rapid	result 1
		Opponent Thakersee, A (Akshay)				Opponent Masoka, L (Lwando)
2	2	Tournament Curro Durbanville Chess Rapid Open 2024				Tournament Curro Durbanville Chess Rapid Open 2024
		date 2024-07-13	rnd 3	type Rapid	result 1	date 2024-07-13	rnd 4	type Rapid	result 1
		Opponent Frick, J (Jacques)				Opponent Chiriya, T (Takudzwa)
3	2	Tournament Hermanus Chess Club Open 2024				Tournament Curro Durbanville Chess Rapid Open 2024
		date 2024-04-20	rnd 7	type Rapid	result 1	date 2024-07-13	rnd 1	type Rapid	result 1
		Opponent Southey, AM (Andrew)				Opponent Whyatt, B (Benji)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament 2024 South Africa National Schools Chess Championship				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-09-28	rnd 5	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Mokoena, T (Tlhokomelo)				Opponent Slabber, P (Pieter)
2	6	Tournament CT League 2024				Tournament CT League 2024
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-08-24	rnd 7	type Standard	result 1
		Opponent Mabuza, M (Mnelisi)				Opponent Petersen, MG (Marc)
3	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Western Cape HS Individuals Championship 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-21	rnd 1	type Standard	result 1
		Opponent Bowers, C (Chad)				Opponent Hjelden, E (Einwald)

#	Games	Start				End
1	7	Tournament 2024 South Africa National Schools Chess Championship				Tournament Paarl Boys' High Chess Festival 2024
		date 2024-09-28	rnd 5	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Mokoena, T (Tlhokomelo)				Opponent Slabber, P (Pieter)
2	6	Tournament CT League 2024				Tournament CT League 2024
		date 2024-07-20	rnd 2	type Standard	result 1	date 2024-08-24	rnd 7	type Standard	result 1
		Opponent Mabuza, M (Mnelisi)				Opponent Petersen, MG (Marc)
3	5	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament Western Cape HS Individuals Championship 2024
		date 2024-03-02	rnd 3	type Standard	result 1	date 2024-03-21	rnd 1	type Standard	result 1
		Opponent Bowers, C (Chad)				Opponent Hjelden, E (Einwald)

#	Games	Start				End
1	3	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Curro Durbanville Chess Open Rapid 2023
		date 2023-07-15	rnd 4	type Rapid	result 1	date 2023-07-15	rnd 6	type Rapid	result 1
		Opponent Thakersee, A (Akshay)				Opponent Masoka, L (Lwando)
2	2	Tournament Curro Durbanville Chess Rapid Open 2024				Tournament Curro Durbanville Chess Rapid Open 2024
		date 2024-07-13	rnd 3	type Rapid	result 1	date 2024-07-13	rnd 4	type Rapid	result 1
		Opponent Frick, J (Jacques)				Opponent Chiriya, T (Takudzwa)
3	2	Tournament Hermanus Chess Club Open 2024				Tournament Curro Durbanville Chess Rapid Open 2024
		date 2024-04-20	rnd 7	type Rapid	result 1	date 2024-07-13	rnd 1	type Rapid	result 1
		Opponent Southey, AM (Andrew)				Opponent Whyatt, B (Benji)

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	Van Staaden ,D (Darren)	3	3	425	2	2	425	1	1	425	0	0	0
1	Van Staaden ,D (Darren)	3	1385.7	1810.7	2	1399.4	1810.7	1	751.6	1810.7	0	0	0
2	Bell ,L (Luke)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
2	Bell ,L (Luke)	3	1626.6	1484.9	2	1586.8	1201.6	1	1338.4	2051.6	0	0	0
3	Thakersee ,A (Akshay)	3	3	425	2	2	425	1	1	425	0	0	0
3	Thakersee ,A (Akshay)	3	1565.6	1990.6	2	1553.6	1990.6	1	1389.2	1990.6	0	0	0
4	Macheka ,C (Clayton)	2	1	0	2	1	0	0	0	0	0	0	0
4	Macheka ,C (Clayton)	2	1835.6	1835.6	2	1862.1	1835.6	0	0	0	0	0	0
5	Michaels ,A (Antonio)	2	2	425	2	2	425	0	0	0	0	0	0
5	Michaels ,A (Antonio)	2	1536.8	1961.8	2	1550.9	1961.8	0	0	0	0	0	0
6	Braaf ,J (Jiraan)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
6	Braaf ,J (Jiraan)	2	1948.4	1735.9	2	1953.1	1735.9	0	0	0	0	0	0
7	Lau ,C (Callum)	2	2	425	2	2	425	0	0	0	0	0	0
7	Lau ,C (Callum)	2	1470.8	1895.8	2	1453.2	1895.8	0	0	0	0	0	0
8	Maruma ,K (Katlego)	2	1	0	2	1	0	0	0	0	0	0	0
8	Maruma ,K (Katlego)	2	1378.7	1378.7	2	1369.6	1378.7	0	0	0	0	0	0
9	Mnyasta ,T (Tezihano)	2	1	0	2	1	0	0	0	0	0	0	0
9	Mnyasta ,T (Tezihano)	2	1968.6	1968.6	2	1962.9	1968.6	0	0	0	0	0	0
10	Slabber ,P (Pieter)	2	2	425	2	2	425	0	0	0	0	0	0
10	Slabber ,P (Pieter)	2	1395.6	1820.6	2	1391.8	1820.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Jacobson, G (Gabriel)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms