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

2025-04-05

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1686

Item	Main	Standard	Rapid	Blitz
Rating	1791.6	1769.8	1433.6	1200
Raw rating	1791.6	1769.8	1433.6	1200
Weighted rating	1777.9	1757.6	1416.8	1200
Weighted performance	1589.4	1589.7	1195.6	0
Floor	1313.1	1299.7	933.6	700
K-factor	24	40	32	36
Min/Max rating change allowed	71.4	73.6	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	1767.3 2025-08-01	1746.6 2025-08-01	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	0	0	0
New rating	1791.6	1769.8	1433.6	1200
Analysis
Rating	1791.6	1769.8	1433.6	1200
Raw rating	1791.6	1769.8	1433.6	1200
Weighted rating	1777.9	1757.6	1416.8
Weighted performance	1589.4	1589.7	1195.6
K-factor	24	40	32	36
Floor	1313.1	1299.7	933.6	700
Max/Min rating change allowed	71.4	73.6	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	1791.6	1769.8	1433.6	1200
New weighted rating	1782.2	1761.9	1420.5	1200
New weighted performance	1588.8	1589.1	1195.1	0
Temp new rating	1791.6	1769.8	1433.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1791.6	1769.8	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
	9	9	0
	65	53	12
	58	52	6
	13	13	0
	11	0	11
History	167	133	34

Games since
	Main 86	Standard 74		Rapid 12		Blitz 0
Gender	Male
Age group	U20
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	163		50		41
Male	157		49		40
U20	18		7		6
U20 Male	16		7		6
Standard
	RSA		Province		Region
Overall	186		53		44
Male	177		52		43
U20	24		8		6
U20 Male	20		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	9	4.5	50	0	1719.1	1719.1
Standard	9	4.5	50	0	1719.1	1719.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	162	105	64.81	125.9	1510.8	1636.7
Standard	133	89	66.92	143.8	1494.3	1638.1
Rapid	29	16	55.17	44	1586.6	1630.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
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
2024-06-01	1694.8	1669.5	1342.9	1200
2024-08-01	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
2023-11-01	1572.4	1526.3	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	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	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
2	Paarl Boys' High Chess Festival 2024 (Elite)	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	5	4	Yes	Analysis
3	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
4	CT League 2024 (A)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	10	8	Yes	Analysis
5	Curro Durbanville Chess Rapid Open 2024 (Championship)	2024-07-13	2024-07-13	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
6	2024 African Youth Chess Championship	2024-06-16	2024-06-22	Standard	Tshwane (GTP)	9	9	5	Yes	Analysis
7	Hermanus Chess Club Open 2024 (Championship)	2024-04-20	2024-04-20	Rapid	Overberg (WOS)	7	6	2	Yes	Analysis
8	Western Cape Inter Region Cup 2024 (U20 Boys)	2024-03-23	2024-03-24	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
9	Western Cape HS Individuals Championship 2024 (U18 Boys)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	4.5	Yes	Analysis
10	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
11	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
12	Kraaifontein Open 2023 (Adanced)	2023-12-09	2023-12-10	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
13	Paarl Boys High Chess Festival 2023 (Elite Division)	2023-10-13	2023-10-14	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
14	WP Club League 2023 (A)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	2	0.5	Yes	Analysis
15	WP Club League 2023 (D PlayOffs)	2023-09-02	2023-09-09	Standard	Cape Town (WCT)	5	2	2	Yes	Analysis
16	WP Club League 2023 (D1)	2023-07-29	2023-08-19	Standard	Cape Town (WCT)	6	3	1.5	Yes	Analysis
17	Curro Durbanville Chess Open Rapid 2023 (Advanced)	2023-07-15	2023-07-15	Rapid	Cape Town (WCT)	6	6	5	Yes	Analysis
18	WP Closed 2023 (U18+U20)	2023-06-16	2023-06-17	Standard	Cape Town (WCT)	6	6	5.5	Yes	Analysis
19	Western Cape HS Individuals 2023 (U17 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
20	Cape Town Open 2023 (Advanced)	2023-03-24	2023-03-26	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
21	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
22	Central District School Trials 2023 (U17 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
23	Cape of Good Hope Open 2023 (Intermediate)	2023-01-28	2023-01-29	Standard	Cape Town (WCT)	6	4	2	Yes	Analysis
24	2022 Western Province Club League (Premier)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	6	1	Yes	Analysis
25	2022 Western Province Club League (D)	2022-08-27	2022-10-01	Standard	Cape Town (WCT)	7	1	1	Yes	Analysis
26	2022 Cape Of Good Hope Open (Intrmediate)	2022-01-29	2022-01-30	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis
27	Jacques Vuyo Le Roux Memorial Rapid 2021	2021-12-04	2021-12-04	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
28	CWP Youth Day Rapid 2021 (U16)	2021-06-16	2021-06-16	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
29	Curro Durbanville Chess Tournament 2019 (Premier)	2019-08-23	2019-08-24	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
30	WP District South 2018 (U13)	2018-02-01	2018-02-02	Standard	Cape Town (WCT)	6	0	0	No	Analysis
31	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	Thakersee ,A (Akshay)	3	3	425	2	2	425	1	1	425	0	0	0
2	Thakersee ,A (Akshay)	3	1565.6	1990.6	2	1553.6	1990.6	1	1389.2	1990.6	0	0	0
3	Mchontsi ,A (Ayabonga)	2	1	0	2	1	0	0	0	0	0	0	0
3	Mchontsi ,A (Ayabonga)	2	1553.9	1553.9	2	1540.2	1553.9	0	0	0	0	0	0
4	Mnyasta ,T (Tezihano)	2	1	0	2	1	0	0	0	0	0	0	0
4	Mnyasta ,T (Tezihano)	2	1968.6	1968.6	2	1962.9	1968.6	0	0	0	0	0	0
5	Slabber ,P (Pieter)	2	2	425	2	2	425	0	0	0	0	0	0
5	Slabber ,P (Pieter)	2	1395.6	1820.6	2	1391.8	1820.6	0	0	0	0	0	0
6	Michaels ,A (Antonio)	2	2	425	2	2	425	0	0	0	0	0	0
6	Michaels ,A (Antonio)	2	1536.8	1961.8	2	1550.9	1961.8	0	0	0	0	0	0
7	Maruma ,K (Katlego)	2	1	0	2	1	0	0	0	0	0	0	0
7	Maruma ,K (Katlego)	2	1378.7	1378.7	2	1369.6	1378.7	0	0	0	0	0	0
8	Lau ,C (Callum)	2	2	425	2	2	425	0	0	0	0	0	0
8	Lau ,C (Callum)	2	1470.8	1895.8	2	1453.2	1895.8	0	0	0	0	0	0
9	Moollajee ,R (Rehaan)	2	1	0	2	1	0	0	0	0	0	0	0
9	Moollajee ,R (Rehaan)	2	1615.6	1615.6	2	1601.4	1615.6	0	0	0	0	0	0
10	Manning ,C (Callan)	2	1	0	2	1	0	0	0	0	0	0	0
10	Manning ,C (Callan)	2	1488	1488	2	1489.3	1488	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

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