Chess South Africa Ratings Database

PLAYER PAGE

Personal

Strydom, J (Jacobus)

Chess SA id

1120145794

FIDE id

Date of birth

2012-04-27 (U14)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-29

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1321.2

Item	Main	Standard	Rapid	Blitz
Rating	1225.5	1230.5	1200	1200
Raw rating	1225.5	1230.5	1200	1200
Weighted rating	1188.1	1187.1	1200	1200
Weighted performance	1186.1	1187.3	0	0
Floor	743.5	756	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	159.9	158.8	165.8	165.8
Highest rating	1258.6 2022-08-01	1259.3 2022-08-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1243.5 2025-09-01	1256 2025-09-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1207.3 2023-05-01	1208.8 2023-05-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1258.6 2022-08-01	1259.3 2022-08-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1225.5	1230.5	1200	1200
Analysis
Rating	1225.5	1230.5	1200	1200
Raw rating	1225.5	1230.5	1200	1200
Weighted rating	1188.1	1187.1	1200
Weighted performance	1186.1	1187.3	0
K-factor	36	36	36	36
Floor	743.5	756	700	700
Max/Min rating change allowed	159.9	158.8	165.8	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	1225.5	1230.5	1200	1200
New weighted rating	1191.9	1191.6	1200	1200
New weighted performance	1178.8	1180	0	0
Temp new rating	1225.5	1230.5	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1225.5	1230.5	1200	1200
New K-factor	36	36	36	36
New floor	743.5	756	700	700

Item	Main	Standard
	0	0
	15	15
	5	5
	10	10
	4	4
	0	0
History	34	34

Games since
	Main 20	Standard 20		Rapid 0		Blitz 0
Gender	Male
Age group	U14
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	15	9.5	63.33	113.3	1204.4	1317.7
Standard	15	9.5	63.33	113.3	1204.4	1317.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	34	16	47.06	-25	1243.4	1218.4
Standard	34	16	47.06	-25	1243.4	1218.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1225.5	1230.5	1200	1200
2025-09-30	1243.5	1256	1200	1200
2025-09-01	1243.5	1256	1200	1200
2025-08-01	1198.3	1200.7	1200	1200
2025-07-01	1198.3	1200.7	1200	1200
2025-06-01	1198.3	1200.7	1200	1200
2025-05-01	1165.7	1159.2	1200	1200
2025-04-01	1165.7	1159.2	1200	1200
2025-03-01	1165.7	1159.2	1200	1200
2025-02-01	1165.7	1159.2	1200	1200
2025-01-01	1164.6	1158.8	1200	1200
2024-12-01	1164.6	1158.8	1200	1200
2024-11-01	1164.6	1158.8	1200	1200
2024-10-01	1164.6	1158.8	1200	1200
2024-09-01	1163.7	1156.3	1200	1200
2024-08-01	1163.7	1156.3	1200	1200
2024-07-01	1163.7	1156.3	1200	1200
2024-09-01	1163.7	1156.3	1200	1200
2024-05-01	1163.7	1156.3	1200	1200
2024-04-01	1163.7	1156.3	1200	1200
2024-03-01	1163.7	1156.3	1200	1200
2024-02-01	1163.7	1156.3	1200	1200
2024-01-01	1163.7	1156.3	1200	1200
2023-12-01	1163.7	1156.3	1200	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 Gauteng Top Schools Teams (U13)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	D5 Teams 2025 (U13 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
3	D5 Anker 2025 (U13 Boys)	2025-05-17	2025-05-17	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U13)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	D5 Teams 2025 (U13 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
3	D5 Anker 2025 (U13 Boys)	2025-05-17	2025-05-17	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
4	Gauteng Schools Individuals Finals 2024 (U13 Boys)	2024-08-16	2024-08-16	Standard	Ekurhuleni (GE)	5	5	1.5	Yes	Analysis
5	2023 Gauteng Top Schools (U11 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	1	Yes	Analysis
6	Gauteng Schools Individual Finals 2023 (U11 Boys)	2023-05-26	2023-05-26	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
7	2022 Gauteng Schools Team Championships (U11 Open)	2022-08-27	2022-08-27	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis

#	Games	Start				End
1	5	Tournament D5 Anker 2025				Tournament D5 Teams 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Motaung, T (Thapelo)				Opponent Steyn, M (Marikus)
2	3	Tournament D5 Teams 2025				Tournament 2025 Gauteng Top Schools Teams
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-29	rnd 1	type Standard	result 1
		Opponent Letshela, H (Hope)				Opponent Alberts, J (Jayden)
3	3	Tournament 2022 Gauteng Schools Team Championships				Tournament Gauteng Schools Individual Finals 2023
		date 2022-08-27	rnd 3	type Standard	result 1	date 2023-05-26	rnd 1	type Standard	result 1
		Opponent Jolosi, S (Siyanda)				Opponent Sibandlana, I (Iminathi)

#	Games	Start				End
1	5	Tournament D5 Anker 2025				Tournament D5 Teams 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Motaung, T (Thapelo)				Opponent Steyn, M (Marikus)
2	3	Tournament 2022 Gauteng Schools Team Championships				Tournament Gauteng Schools Individual Finals 2023
		date 2022-08-27	rnd 3	type Standard	result 1	date 2023-05-26	rnd 1	type Standard	result 1
		Opponent Jolosi, S (Siyanda)				Opponent Sibandlana, I (Iminathi)
3	2	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Letshela, H (Hope)				Opponent Marais, R (Reinghardt)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2022 Gauteng Schools Team Championships				Tournament Gauteng Schools Individual Finals 2023
		date 2022-08-27	rnd 3	type Standard	result 1	date 2023-05-26	rnd 1	type Standard	result 1
		Opponent Jolosi, S (Siyanda)				Opponent Sibandlana, I (Iminathi)
2	2	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Letshela, H (Hope)				Opponent Marais, R (Reinghardt)
3	2	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Van Rooyen, A (Anika)				Opponent Steyn, M (Marikus)

#	Games	Start				End
1	3	Tournament 2022 Gauteng Schools Team Championships				Tournament Gauteng Schools Individual Finals 2023
		date 2022-08-27	rnd 3	type Standard	result 1	date 2023-05-26	rnd 1	type Standard	result 1
		Opponent Jolosi, S (Siyanda)				Opponent Sibandlana, I (Iminathi)
2	2	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Letshela, H (Hope)				Opponent Marais, R (Reinghardt)
3	2	Tournament D5 Teams 2025				Tournament D5 Teams 2025
		date 2025-08-16	rnd 1	type Standard	result 1	date 2025-08-16	rnd 2	type Standard	result 1
		Opponent Van Rooyen, A (Anika)				Opponent Steyn, M (Marikus)

No games found.

#	Games	Start				End

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	Pitzer ,M (Marlu)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
1	Pitzer ,M (Marlu)	2	1177.7	965.2	2	1202.5	965.2	0	0	0	0	0	0
2	Jiyane ,O (Osiphayo)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Jiyane ,O (Osiphayo)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Brand ,H (Henko)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Brand ,H (Henko)	1	1493.4	1068.4	1	1501.7	1068.4	0	0	0	0	0	0
4	Jolosi ,S (Siyanda)	1	1	425	1	1	425	0	0	0	0	0	0
4	Jolosi ,S (Siyanda)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Esterhuizen ,Z (Zane)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Esterhuizen ,Z (Zane)	1	1468.7	1043.7	1	1460.9	1043.7	0	0	0	0	0	0
6	Lay ,T (Tyler Otto)	1	1	425	1	1	425	0	0	0	0	0	0
6	Lay ,T (Tyler Otto)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Lekwape ,R (Retshidisitswe)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Lekwape ,R (Retshidisitswe)	1	1437	1012	1	1427	1012	0	0	0	0	0	0
8	Mathebula ,B (Bunene)	1	1	425	1	1	425	0	0	0	0	0	0
8	Mathebula ,B (Bunene)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Marais ,R (Reinghardt)	1	1	425	1	1	425	0	0	0	0	0	0
9	Marais ,R (Reinghardt)	1	1199.8	1624.8	1	1199.8	1624.8	0	0	0	0	0	0
10	Bender ,J (Jandre)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Bender ,J (Jandre)	1	1108.2	683.2	1	1097.7	683.2	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

Strydom, J (Jacobus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms