Chess South Africa Ratings Database

PLAYER PAGE

Personal

Hefer, J (Jason)

Chess SA id

1090139339

FIDE id

Date of birth

2009-04-30 (U18)

Gender

Male

Region

Lejweleputswa (FLW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1028

Item	Main	Standard	Rapid	Blitz
Rating	1154.8	1147.1	1200	1200
Raw rating	1113.8	1102.8	1200	1200
Weighted rating	1154.8	1147.1	1200	1200
Weighted performance	959.5	959.1	0	0
Floor	720.8	724.8	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	187.5	190.4	165.8	165.8
Highest rating	1305.1 2022-03-01	1305.4 2022-03-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1220.8 2022-04-01	1224.8 2022-04-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1220.8 2023-04-01	1224.8 2023-04-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1305.1 2022-03-01	1305.4 2022-03-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-3.5	-3.6	0	0
New rating	1151.4	1143.4	1200	1200
Analysis
Rating	1154.8	1147.1	1200	1200
Raw rating	1113.8	1102.8	1200	1200
Weighted rating	1154.8	1147.1	1200
Weighted performance	959.5	959.1	0
K-factor	36	36	36	36
Floor	720.8	724.8	700	700
Max/Min rating change allowed	187.5	190.4	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	1113.8	1102.8	1200	1200
New weighted rating	1151.4	1143.4	1200	1200
New weighted performance	953.5	953.1	0	0
Temp new rating	1151.4	1143.4	1200	1200
Temp new rating +/-	-3.5	-3.6	0	0
Final new rating +/-	-3.5	-3.6	0	0
New rating	1151.4	1143.4	1200	1200
New K-factor	36	36	36	36
New floor	720.8	724.8	700	700

Item	Main	Standard
	0	0
	18	18
	9	9
	15	15
	5	5
	0	0
History	47	47

Games since
	Main 27	Standard 27		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Lejweleputswa (FLW)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	18	5.5	30.56	-165.3	1209	1043.7
Standard	18	5.5	30.56	-165.3	1209	1043.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	47	18.5	39.36	-90.4	1210.9	1120.5
Standard	47	18.5	39.36	-90.4	1210.9	1120.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1113.8	1102.8	1200	1200
2025-09-30	1113.8	1102.8	1200	1200
2025-09-01	1113.8	1102.8	1200	1200
2025-08-01	1165.7	1158.5	1200	1200
2025-07-01	1165.2	1157.8	1200	1200
2025-06-01	1164.7	1157	1200	1200
2025-05-01	1163.4	1155.7	1200	1200
2025-04-01	1163.6	1155.6	1200	1200
2025-03-01	1163	1155	1200	1200
2025-02-01	1176.1	1172.3	1200	1200
2025-01-01	1176.1	1172.3	1200	1200
2024-12-01	1176.1	1172.3	1200	1200
2024-11-01	1176.1	1172.3	1200	1200
2024-10-01	1176.1	1172.3	1200	1200
2024-09-01	1169.4	1162.9	1200	1200
2024-08-01	1169.4	1162.9	1200	1200
2024-07-01	1169.4	1162.9	1200	1200
2024-09-01	1169.4	1162.9	1200	1200
2024-05-01	1169.4	1162.9	1200	1200
2024-04-01	1142.5	1127.6	1200	1200
2024-03-01	1142.5	1127.6	1200	1200
2024-02-01	1142.5	1127.6	1200	1200
2024-01-01	1142.5	1127.6	1200	1200
2023-12-01	1142.5	1127.6	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	Free State Closed 2025 (U18 Open)	2025-08-14	2025-08-15	Standard	Mangaung (FMB)	5	4	0	Yes	Analysis
2	Lejweleputswa Chess 4th Qualifying Swiss Open Tournament 2025 (B)	2025-04-12	2025-04-12	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
3	Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025 (U18)	2025-03-29	2025-03-29	Standard	Lejweleputswa (FLW)	5	4	1.5	Yes	Analysis
4	HTS Welkom Open Chess Tournament 2025 (B)	2025-02-22	2025-02-22	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Free State Closed 2025 (U18 Open)	2025-08-14	2025-08-15	Standard	Mangaung (FMB)	5	4	0	Yes	Analysis
2	Lejweleputswa Chess 4th Qualifying Swiss Open Tournament 2025 (B)	2025-04-12	2025-04-12	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
3	Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025 (U18)	2025-03-29	2025-03-29	Standard	Lejweleputswa (FLW)	5	4	1.5	Yes	Analysis
4	HTS Welkom Open Chess Tournament 2025 (B)	2025-02-22	2025-02-22	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
5	Lejweleputswa Closed Chess Championships 2024 (U16)	2024-09-21	2024-09-21	Standard	Lejweleputswa (FLW)	5	4	2	Yes	Analysis
6	Lejweleputswa 3rd Qualifieng Tournament 2024 (U16)	2024-04-20	2024-04-20	Standard	Lejweleputswa (FLW)	5	5	3	Yes	Analysis
7	Inter Regional Chess Championship 2023 (U16)	2023-05-19	2023-05-20	Standard	Mangaung (FMB)	5	5	1	Yes	Analysis
8	Lejweleputswa 4th Qualifying Tournament 2023 (U16)	2023-05-26	2023-05-26	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
9	Lejweleputswa 3rd Qualifieng Tournament 2023 (C)	2023-04-21	2023-04-21	Standard	Lejweleputswa (FLW)	5	5	2	Yes	Analysis
10	Lejweleputswa 2nd Qualifieng Tournament 2022 (D)	2022-03-19	2022-03-19	Standard	Lejweleputswa (FLW)	5	5	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament Lejweleputswa 2nd Qualifieng Tournament 2022				Tournament Lejweleputswa 3rd Qualifieng Tournament 2023
		date 2022-03-19	rnd 3	type Standard	result 1	date 2023-04-21	rnd 1	type Standard	result 1
		Opponent Segalo, T (Tshiamo)				Opponent Cronje, M (Marnus)
2	3	Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025				Tournament Lejweleputswa Chess 4th Qualifying Swiss Open Tournament 2025
		date 2025-03-29	rnd 3	type Standard	result 0.5	date 2025-04-12	rnd 1	type Standard	result 1
		Opponent Maposa, A (Akhanani)				Opponent Maseko, L (Letlotlo)
3	2	Tournament Lejweleputswa Closed Chess Championships 2024				Tournament Lejweleputswa Closed Chess Championships 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-09-21	rnd 4	type Standard	result 1
		Opponent Michalakis, S (Stylianos)				Opponent Mcnab, A (Andrew)

#	Games	Start				End
1	4	Tournament Lejweleputswa 2nd Qualifieng Tournament 2022				Tournament Lejweleputswa 3rd Qualifieng Tournament 2023
		date 2022-03-19	rnd 3	type Standard	result 1	date 2023-04-21	rnd 1	type Standard	result 1
		Opponent Segalo, T (Tshiamo)				Opponent Cronje, M (Marnus)
2	3	Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025				Tournament Lejweleputswa Chess 4th Qualifying Swiss Open Tournament 2025
		date 2025-03-29	rnd 3	type Standard	result 0.5	date 2025-04-12	rnd 1	type Standard	result 1
		Opponent Maposa, A (Akhanani)				Opponent Maseko, L (Letlotlo)
3	2	Tournament Lejweleputswa Closed Chess Championships 2024				Tournament Lejweleputswa Closed Chess Championships 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-09-21	rnd 4	type Standard	result 1
		Opponent Michalakis, S (Stylianos)				Opponent Mcnab, A (Andrew)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Lejweleputswa 2nd Qualifieng Tournament 2022				Tournament Lejweleputswa 3rd Qualifieng Tournament 2023
		date 2022-03-19	rnd 3	type Standard	result 1	date 2023-04-21	rnd 1	type Standard	result 1
		Opponent Segalo, T (Tshiamo)				Opponent Cronje, M (Marnus)
2	2	Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025				Tournament Lejweleputswa Chess 4th Qualifying Swiss Open Tournament 2025
		date 2025-03-29	rnd 5	type Standard	result 1	date 2025-04-12	rnd 1	type Standard	result 1
		Opponent Hlalele, L (Lehlohonolo)				Opponent Maseko, L (Letlotlo)
3	2	Tournament Lejweleputswa Closed Chess Championships 2024				Tournament Lejweleputswa Closed Chess Championships 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-09-21	rnd 4	type Standard	result 1
		Opponent Michalakis, S (Stylianos)				Opponent Mcnab, A (Andrew)

#	Games	Start				End
1	4	Tournament Lejweleputswa 2nd Qualifieng Tournament 2022				Tournament Lejweleputswa 3rd Qualifieng Tournament 2023
		date 2022-03-19	rnd 3	type Standard	result 1	date 2023-04-21	rnd 1	type Standard	result 1
		Opponent Segalo, T (Tshiamo)				Opponent Cronje, M (Marnus)
2	2	Tournament Lejweleputswa Chess 3rd Qualifying Swiss Open Tournament 2025				Tournament Lejweleputswa Chess 4th Qualifying Swiss Open Tournament 2025
		date 2025-03-29	rnd 5	type Standard	result 1	date 2025-04-12	rnd 1	type Standard	result 1
		Opponent Hlalele, L (Lehlohonolo)				Opponent Maseko, L (Letlotlo)
3	2	Tournament Lejweleputswa Closed Chess Championships 2024				Tournament Lejweleputswa Closed Chess Championships 2024
		date 2024-09-21	rnd 3	type Standard	result 1	date 2024-09-21	rnd 4	type Standard	result 1
		Opponent Michalakis, S (Stylianos)				Opponent Mcnab, A (Andrew)

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	Michalakis ,S (Stylianos)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Michalakis ,S (Stylianos)	3	1198.4	1056.7	3	1198.4	1056.7	0	0	0	0	0	0
2	Van Brakel ,J (Jandre)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Van Brakel ,J (Jandre)	2	1221.8	796.8	2	1230.2	796.8	0	0	0	0	0	0
3	Maposa ,A (Akhanani)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	Maposa ,A (Akhanani)	2	1223.9	1011.4	2	1223.5	1011.4	0	0	0	0	0	0
4	Molongoana ,P (Peo)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Molongoana ,P (Peo)	2	1377	952	2	1376.8	952	0	0	0	0	0	0
5	Monyatso ,T (Tankiso)	2	2	425	2	2	425	0	0	0	0	0	0
5	Monyatso ,T (Tankiso)	2	1196.3	1621.3	2	1195.3	1621.3	0	0	0	0	0	0
6	Cronje ,M (Marnus)	2	1	0	2	1	0	0	0	0	0	0	0
6	Cronje ,M (Marnus)	2	1137.5	1137.5	2	1125.2	1137.5	0	0	0	0	0	0
7	Moru ,T (Tshepo)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Moru ,T (Tshepo)	2	1257.8	832.8	2	1266.5	832.8	0	0	0	0	0	0
8	Khoete ,B (Bokang)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Khoete ,B (Bokang)	1	1179.4	754.4	1	1138.5	754.4	0	0	0	0	0	0
9	Lesupi ,P (Precious)	1	1	425	1	1	425	0	0	0	0	0	0
9	Lesupi ,P (Precious)	1	644	1069	1	644	1069	0	0	0	0	0	0
10	Mcnab ,A (Andrew)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mcnab ,A (Andrew)	1	1042.7	1467.7	1	1039.5	1467.7	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

Hefer, J (Jason)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms