Chess South Africa Ratings Database

PLAYER PAGE

Personal

Struis, J (Jethro)

Chess SA id

1100146489

FIDE id

Date of birth

2010-01-13 (U16)

Gender

Male

Region

Pixley-ka-Seme (NCP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-08-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1332	1332.2	1200	1200
Raw rating	1332	1332.2	1200	1200
Weighted rating	1311.8	1313.2	1200	1200
Weighted performance	1143.9	1144	0	0
Floor	832	832.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	137.4	137.3	165.8	165.8
Highest rating	1346.8 2024-08-01	1347 2024-08-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1332 2024-09-01	1332.2 2024-09-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1302.6 2025-08-01	1304.3 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1346.8 2024-08-01	1347 2024-08-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1332	1332.2	1200	1200
Analysis
Rating	1332	1332.2	1200	1200
Raw rating	1332	1332.2	1200	1200
Weighted rating	1311.8	1313.2	1200
Weighted performance	1143.9	1144	0
K-factor	36	36	36	36
Floor	832	832.2	700	700
Max/Min rating change allowed	137.4	137.3	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	1332	1332.2	1200	1200
New weighted rating	1315.8	1317	1200	1200
New weighted performance	1143.4	1143.6	0	0
Temp new rating	1332	1332.2	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1332	1332.2	1200	1200
New K-factor	36	36	36	36
New floor	832	832.2	700	700

Item	Main	Standard
	0	0
	0	0
	15	15
	10	10
	5	5
	0	0
History	30	30

Games since
	Main 15	Standard 15		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Pixley-ka-Seme (NCP)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	30	17.5	58.33	70.8	1239.6	1310.5
Standard	30	17.5	58.33	70.8	1239.6	1310.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1332	1332.2	1200	1200
2025-09-01	1332	1332.2	1200	1200
2025-08-01	1332	1332.2	1200	1200
2025-07-01	1332	1332.2	1200	1200
2025-06-01	1332	1332.2	1200	1200
2025-05-01	1332	1332.2	1200	1200
2025-04-01	1332	1332.2	1200	1200
2025-03-01	1332	1332.2	1200	1200
2025-02-01	1332	1332.2	1200	1200
2025-01-01	1332	1332.2	1200	1200
2024-12-01	1332	1332.2	1200	1200
2024-11-01	1332	1332.2	1200	1200
2024-10-01	1332	1332.2	1200	1200
2024-09-01	1332	1332.2	1200	1200
2024-08-01	1280.7	1296.7	1200	1200
2024-07-01	1218.1	1223.3	1200	1200
2024-06-01	1218.1	1223.3	1200	1200
2024-08-01	1218.1	1223.3	1200	1200
2024-04-01	1198.7	1202.1	1200	1200
2024-03-01	1198.7	1202.1	1200	1200
2024-02-01	1198.7	1202.1	1200	1200
2024-01-01	1198.7	1202.1	1200	1200
2023-12-01	1198.7	1202.1	1200	1200
2023-11-01	1198.7	1202.1	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Hopetown Schools Chess Tournament 2024 (U15)	2024-08-17	2024-08-17	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
2	2024 HSDA Open 3 (U15)	2024-07-27	2024-07-27	Standard	Pixley-ka-Seme (NCP)	5	5	4.5	Yes	Analysis
3	The Pixley ka Seme Chess Open Schools Tournament 2024 (U15)	2024-04-06	2024-04-06	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
4	Inter Regional Chess Championship 2023 (U14)	2023-05-19	2023-05-20	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
5	Hopetown Schools Chess Open Tournament 2023 (U13)	2023-02-25	2023-02-25	Standard	John Taolo Gaetswewe (NCJ)	5	5	3	Yes	Analysis
6	Pixley Chess Trials 2022 (U14)	2022-09-03	2022-09-03	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	8	Tournament The Pixley ka Seme Chess Open Schools Tournament 2024				Tournament Hopetown Schools Chess Tournament 2024
		date 2024-04-06	rnd 5	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Kanjee, K (Khiyaan)				Opponent Botha, J (Jan-Petrus)
2	3	Tournament Inter Regional Chess Championship 2023				Tournament The Pixley ka Seme Chess Open Schools Tournament 2024
		date 2023-05-20	rnd 5	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent May, K (Kieran Taine)				Opponent Damons, C (Chaziah)
3	2	Tournament Hopetown Schools Chess Open Tournament 2023				Tournament Hopetown Schools Chess Open Tournament 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Damons, C (Chaziah)				Opponent Botha, A (Ane)

#	Games	Start				End
1	8	Tournament The Pixley ka Seme Chess Open Schools Tournament 2024				Tournament Hopetown Schools Chess Tournament 2024
		date 2024-04-06	rnd 5	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Kanjee, K (Khiyaan)				Opponent Botha, J (Jan-Petrus)
2	3	Tournament Inter Regional Chess Championship 2023				Tournament The Pixley ka Seme Chess Open Schools Tournament 2024
		date 2023-05-20	rnd 5	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent May, K (Kieran Taine)				Opponent Damons, C (Chaziah)
3	2	Tournament Hopetown Schools Chess Open Tournament 2023				Tournament Hopetown Schools Chess Open Tournament 2023
		date 2023-02-25	rnd 1	type Standard	result 1	date 2023-02-25	rnd 2	type Standard	result 1
		Opponent Damons, C (Chaziah)				Opponent Botha, A (Ane)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2024 HSDA Open 3				Tournament Hopetown Schools Chess Tournament 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Botha, J (Jan-Petrus)				Opponent Botha, J (Jan-Petrus)
2	3	Tournament The Pixley ka Seme Chess Open Schools Tournament 2024				Tournament 2024 HSDA Open 3
		date 2024-04-06	rnd 5	type Standard	result 1	date 2024-07-27	rnd 2	type Standard	result 1
		Opponent Kanjee, K (Khiyaan)				Opponent Tobias, J (Jordan)
3	3	Tournament Inter Regional Chess Championship 2023				Tournament The Pixley ka Seme Chess Open Schools Tournament 2024
		date 2023-05-20	rnd 5	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent May, K (Kieran Taine)				Opponent Damons, C (Chaziah)

#	Games	Start				End
1	4	Tournament 2024 HSDA Open 3				Tournament Hopetown Schools Chess Tournament 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-08-17	rnd 2	type Standard	result 1
		Opponent Botha, J (Jan-Petrus)				Opponent Botha, J (Jan-Petrus)
2	3	Tournament The Pixley ka Seme Chess Open Schools Tournament 2024				Tournament 2024 HSDA Open 3
		date 2024-04-06	rnd 5	type Standard	result 1	date 2024-07-27	rnd 2	type Standard	result 1
		Opponent Kanjee, K (Khiyaan)				Opponent Tobias, J (Jordan)
3	3	Tournament Inter Regional Chess Championship 2023				Tournament The Pixley ka Seme Chess Open Schools Tournament 2024
		date 2023-05-20	rnd 5	type Standard	result 1	date 2024-04-06	rnd 2	type Standard	result 1
		Opponent May, K (Kieran Taine)				Opponent Damons, C (Chaziah)

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	Botha ,J (Jan-Petrus)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
1	Botha ,J (Jan-Petrus)	3	1304.2	1445.9	3	1304.7	1445.9	0	0	0	0	0	0
2	Damons ,C (Chaziah)	2	2	425	2	2	425	0	0	0	0	0	0
2	Damons ,C (Chaziah)	2	1097.2	1522.2	2	1083	1522.2	0	0	0	0	0	0
3	Murphy ,M (Migael)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Murphy ,M (Migael)	2	1425.7	1000.7	2	1422.8	1000.7	0	0	0	0	0	0
4	Botha ,A (Ane)	2	2	425	2	2	425	0	0	0	0	0	0
4	Botha ,A (Ane)	2	1120.8	1545.8	2	1125.6	1545.8	0	0	0	0	0	0
5	Oberholzer ,K (Kyle)	2	2	425	2	2	425	0	0	0	0	0	0
5	Oberholzer ,K (Kyle)	2	1129.9	1554.9	2	1142.6	1554.9	0	0	0	0	0	0
6	Van Rooyen ,A (Andre)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Van Rooyen ,A (Andre)	1	1464.8	1039.8	1	1451.1	1039.8	0	0	0	0	0	0
7	Fourie ,K (Kyle)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Fourie ,K (Kyle)	1	1345.1	920.1	1	1343.3	920.1	0	0	0	0	0	0
8	Booysen ,L (Liyakhanya)	1	1	425	1	1	425	0	0	0	0	0	0
8	Booysen ,L (Liyakhanya)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Michalakis ,S (Stefanos)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Michalakis ,S (Stefanos)	1	1423	998	1	1420.8	998	0	0	0	0	0	0
10	Molongoana ,P (Peo)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Molongoana ,P (Peo)	1	1345.1	920.1	1	1328.3	920.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Struis, J (Jethro)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms