Chess South Africa Ratings Database

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Personal

Jacobs, I (Inge)

Chess SA id

2110107176

FIDE id

Date of birth

2011-03-30 (U16)

Gender

Female

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1277.9

Item	Main	Standard	Rapid	Blitz
Rating	1344.1	1347.2	1261.6	1200
Raw rating	1344.1	1347.2	1261.6	1200
Weighted rating	1305	1299.8	1261.6	1200
Weighted performance	1309	1307.6	0	0
Floor	844.1	847.2	761.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	135	134.5	151.9	165.8
Highest rating	1344.1 2025-09-01	1347.2 2025-09-01	1392.5 2022-04-01	1200 2018-10-01
Highest raw rating	1344.1 2025-09-01	1347.2 2025-09-01	1261.6 2024-03-01	1200 2024-03-01
Highest weighted rating	1304.8 2025-05-05	1297.2 2025-05-05	1261.6 2024-04-01	1200 2018-10-01
Highest weighted performance	1322.3 2025-09-01	1320.9 2025-09-01	1392.5 2022-04-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1344.1	1347.2	1261.6	1200
Analysis
Rating	1344.1	1347.2	1261.6	1200
Raw rating	1344.1	1347.2	1261.6	1200
Weighted rating	1305	1299.8	1261.6
Weighted performance	1309	1307.6	0
K-factor	36	36	36	36
Floor	844.1	847.2	761.6	700
Max/Min rating change allowed	135	134.5	151.9	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	1344.1	1347.2	1261.6	1200
New weighted rating	1308.4	1304	1261.6	1200
New weighted performance	1308.5	1307.1	0	0
Temp new rating	1344.1	1347.2	1261.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1344.1	1347.2	1261.6	1200
New K-factor	36	36	36	36
New floor	844.1	847.2	761.6	700

Item	Main	Standard	Rapid
	0	0	0
	37	37	0
	0	0	0
	0	0	0
	48	41	7
	25	25	0
History	201	194	7

Games since
	Main 37	Standard 37		Rapid 0		Blitz 0
Gender	Female
Age group	U16
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	2602		943		364
Female	489		173		74
U16	415		141		56
U16 Female	98		35		12
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-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	37	19.5	52.7	23	1273.2	1296.2
Standard	37	19.5	52.7	23	1273.2	1296.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	201	88.5	44.03	-50.7	1194.3	1143.6
Standard	194	83.5	43.04	-59.1	1194.3	1135.2
Rapid	7	5	71.43	182.1	1193.9	1376
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1344.1	1347.2	1261.6	1200
2025-09-01	1344.1	1347.2	1261.6	1200
2025-08-01	1301.1	1296.7	1261.6	1200
2025-07-01	1297.1	1290.1	1261.6	1200
2025-06-01	1294.1	1286.7	1261.6	1200
2025-05-01	1302.8	1296.2	1261.6	1200
2025-04-01	1302.8	1296.2	1261.6	1200
2025-03-01	1296.5	1289.6	1261.6	1200
2025-02-01	1296.1	1289.3	1261.6	1200
2025-01-01	1296.6	1289.7	1261.6	1200
2024-12-01	1296.6	1289.7	1261.6	1200
2024-11-01	1296.6	1289.7	1261.6	1200
2024-10-01	1296.6	1289.7	1261.6	1200
2024-09-01	1296.6	1289.7	1261.6	1200
2024-08-01	1296.6	1289.7	1261.6	1200
2024-07-01	1296.6	1289.7	1261.6	1200
2024-06-01	1296.6	1289.7	1261.6	1200
2024-08-01	1296.6	1289.7	1261.6	1200
2024-04-01	1296.6	1289.7	1261.6	1200
2024-03-01	1296.6	1289.7	1261.6	1200
2024-02-01	1296.6	1289.7	1261.6	1200
2024-01-01	1296.6	1289.7	1261.6	1200
2023-12-01	1296.6	1289.7	1261.6	1200
2023-11-01	1296.6	1289.7	1261.6	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	2025 Tshwane South School District CLOSED League Championship (U15A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U16)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
3	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Tshwane South School District Individual Finals (D4) (U15 Girls)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
5	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
6	Lubowski Open 2025 (D2)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
7	2025 Tshwane Chess OPEN Registration Tournament (B3)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Tshwane South School District CLOSED League Championship (U15A)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U16)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
3	2025 Wynie Robbertse Chess Tournament (D)	2025-07-19	2025-07-19	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
4	2025 Tshwane South School District Individual Finals (D4) (U15 Girls)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
5	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
6	Lubowski Open 2025 (D2)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
7	2025 Tshwane Chess OPEN Registration Tournament (B3)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
8	2022 South African Junior Team Chess Championships (U10+U12 Girls)	2022-12-04	2022-12-07	Standard	4 Knights (4K)	5	5	5	Yes	Analysis
9	2022 Gauteng North Chess Open (C)	2022-10-15	2022-10-16	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
10	2022 Etienne Lewis (U12 Girls)	2022-09-02	2022-09-04	Standard	Tshwane (GTP)	7	7	4	Yes	Analysis
11	2022 Gauteng Schools Individual Chess Championship (U11 Girls)	2022-06-18	2022-06-18	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
12	2022 Mid Gauteng Open (C)	2022-05-07	2022-05-07	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
13	D4 Individuals 2022 (U11 Girls)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	5	Yes	Analysis
14	2022 Lubowski Open Tournament (C)	2022-04-09	2022-04-10	Standard	Tshwane (GTP)	5	5	0	Yes	Analysis
15	2022 Gauteng Interregion (U12 Girls)	2022-02-26	2022-02-26	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
16	2022 Tshwane Chess Open Registration Tournament (D1)	2022-01-29	2022-01-29	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
17	2021 Etienne Lewis Closed Trials (U12 Girls)	2021-09-24	2021-09-26	Standard	Nelson Mandela Bay (ENM)	7	6	3	Yes	Analysis
18	2021 Alekhine Open (D)	2021-08-14	2021-08-15	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
19	2021 Chris Greyling Open Tournament (C)	2021-05-08	2021-05-08	Standard	Tshwane (GTP)	5	5	0.5	Yes	Analysis
20	2021 Blou Bul Tournament (C)	2021-04-10	2021-04-10	Standard	Mangaung (FMB)	5	5	1	Yes	Analysis
21	2021 Registration Tournament (C)	2021-03-13	2021-03-13	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
22	2020 Wynie Robbertse Open Chess Tournament (U10)	2020-03-07	2020-03-07	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
23	2020 Piet Robbertse (E+F)	2020-01-31	2020-02-02	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
24	2020 Blou Bul (E)	2020-02-15	2020-02-15	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
25	2020 Registration Tournament (E)	2020-01-25	2020-01-25	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
26	2019 South African Junior Team Championships (U10 Girls)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	6	3	Yes	Analysis
27	2019 TC SAJCC Prep Tournament (C)	2019-11-30	2019-11-30	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
28	2019 Etienne Lewis Trials (U10 Girls)	2019-08-30	2019-09-01	Standard	Tshwane (GTP)	7	6	1	Yes	Analysis
29	2019 Mid-Gauteng Open (E)	2019-08-17	2019-08-17	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
30	2019 Lubowski Open Tournament (E)	2019-05-11	2019-05-11	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
31	2019 Chris Greyling (E)	2019-04-27	2019-04-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
32	2019 Capablanca Chess Festival (Swiss E)	2019-04-19	2019-04-19	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
33	2019 D4 Individual Finals (U9 Mixed)	2019-03-09	2019-03-09	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
34	2019 TuksChess Open (C)	2019-02-23	2019-02-23	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
35	2019 Blou Bul (E)	2019-02-16	2019-02-16	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
36	2019 Piet Robbertse (Beginners)	2019-02-02	2019-02-03	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
37	2018 Tshwane Inter Region (U10D)	2018-12-01	2018-12-01	Standard	Cape Town (WCT)	6	5	0	Yes	Analysis
38	South African Junior Team Championships 2018 (U8B+U8 Girls)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	1.5	Yes	Analysis
39	2018 Lardies Ope (F)	2018-10-27	2018-10-27	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis

#	Games	Start				End
1	5	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-07	rnd 5	type Standard	result 1
		Opponent Kriel, V (Vene)				Opponent Smith, L (Leah)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane South School District Individual Finals (D4)
		date 2025-05-03	rnd 3	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent THOKA, M (MORORISENG)
3	4	Tournament 2020 Piet Robbertse				Tournament 2020 Blou Bul
		date 2020-02-02	rnd 5	type Standard	result 1	date 2020-02-15	rnd 3	type Standard	result 1
		Opponent Kilian, D (Daniel)				Opponent Webb, A (Abbygail)

#	Games	Start				End
1	5	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-07	rnd 5	type Standard	result 1
		Opponent Kriel, V (Vene)				Opponent Smith, L (Leah)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane South School District Individual Finals (D4)
		date 2025-05-03	rnd 3	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent THOKA, M (MORORISENG)
3	4	Tournament 2020 Piet Robbertse				Tournament 2020 Blou Bul
		date 2020-02-02	rnd 5	type Standard	result 1	date 2020-02-15	rnd 3	type Standard	result 1
		Opponent Kilian, D (Daniel)				Opponent Webb, A (Abbygail)

#	Games	Start				End
1	3	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 1	type Rapid	result 1	date 2022-04-23	rnd 3	type Rapid	result 1
		Opponent Erasmus, A (Anri)				Opponent Beetge, E (Elzette)
2	2	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 1	date 2022-04-23	rnd 6	type Rapid	result 1
		Opponent Weder, K (Karlien)				Opponent Struwig, K (Karien)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-07	rnd 5	type Standard	result 1
		Opponent Kriel, V (Vene)				Opponent Smith, L (Leah)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane South School District Individual Finals (D4)
		date 2025-05-03	rnd 3	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent THOKA, M (MORORISENG)
3	4	Tournament 2020 Piet Robbertse				Tournament 2020 Blou Bul
		date 2020-02-02	rnd 5	type Standard	result 1	date 2020-02-15	rnd 3	type Standard	result 1
		Opponent Kilian, D (Daniel)				Opponent Webb, A (Abbygail)

#	Games	Start				End
1	5	Tournament 2022 South African Junior Team Chess Championships				Tournament 2022 South African Junior Team Chess Championships
		date 2022-12-04	rnd 1	type Standard	result 1	date 2022-12-07	rnd 5	type Standard	result 1
		Opponent Kriel, V (Vene)				Opponent Smith, L (Leah)
2	4	Tournament 2025 Silver Lakes Chess Club Open Chess Tournament				Tournament 2025 Tshwane South School District Individual Finals (D4)
		date 2025-05-03	rnd 3	type Standard	result 1	date 2025-05-10	rnd 1	type Standard	result 1
		Opponent Matjila, N (Neo)				Opponent THOKA, M (MORORISENG)
3	4	Tournament 2020 Piet Robbertse				Tournament 2020 Blou Bul
		date 2020-02-02	rnd 5	type Standard	result 1	date 2020-02-15	rnd 3	type Standard	result 1
		Opponent Kilian, D (Daniel)				Opponent Webb, A (Abbygail)

#	Games	Start				End
1	3	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 1	type Rapid	result 1	date 2022-04-23	rnd 3	type Rapid	result 1
		Opponent Erasmus, A (Anri)				Opponent Beetge, E (Elzette)
2	2	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 1	date 2022-04-23	rnd 6	type Rapid	result 1
		Opponent Weder, K (Karlien)				Opponent Struwig, K (Karien)

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	Veldman ,C (Chantane)	4	2	0	4	2	0	0	0	0	0	0	0
1	Veldman ,C (Chantane)	4	1073.2	1073.2	4	1044.6	1073.2	0	0	0	0	0	0
2	Mcphail ,M (Matthew)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Mcphail ,M (Matthew)	3	1201.2	1342.9	3	1191	1342.9	0	0	0	0	0	0
3	De Waal ,N (Nadine)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	De Waal ,N (Nadine)	3	1326	901	3	1307	901	0	0	0	0	0	0
4	Webb ,A (Abbygail)	3	3	425	3	3	425	0	0	0	0	0	0
4	Webb ,A (Abbygail)	3	1153	1578	3	1142	1578	0	0	0	0	0	0
5	Theron ,L (Lydia)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
5	Theron ,L (Lydia)	3	1325.4	1042.1	3	1315.8	1042.1	0	0	0	0	0	0
6	Louw ,N (Nova)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
6	Louw ,N (Nova)	2	1312.1	1099.6	2	1304.1	1099.6	0	0	0	0	0	0
7	Niehaus ,J (Johannes)	2	1	0	2	1	0	0	0	0	0	0	0
7	Niehaus ,J (Johannes)	2	1063.3	1063.3	2	1059.6	1063.3	0	0	0	0	0	0
8	Markram ,G (Gideon)	2	1	0	2	1	0	0	0	0	0	0	0
8	Markram ,G (Gideon)	2	1176.2	1176.2	2	1184.2	1176.2	0	0	0	0	0	0
9	Eygelaar ,L (Leila)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Eygelaar ,L (Leila)	2	1143.6	718.6	2	1126.8	718.6	0	0	0	0	0	0
10	Bloem ,R (Reinhardt)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Bloem ,R (Reinhardt)	2	1274.4	849.4	2	1268.2	849.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Jacobs, I (Inge)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms