Chess South Africa Ratings Database

PLAYER PAGE

Personal

Gertze, J (Josiah)

Chess SA id

1140327755

FIDE id

Date of birth

2014-01-05 (U12)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1220.7	1200	1222.8	1200
Raw rating	1220.7	1200	1222.8	1200
Weighted rating	1203.4	1200	1203.9	1200
Weighted performance	0	0	0	0
Floor	723	700	726.8	700
K-factor	36	40	36	40
Min/Max rating change allowed	161	165.8	160.5	165.8
Highest rating	1223 2025-09-30	1199 2025-09-16	1226.8 2025-09-30	1199 2025-09-16
Highest raw rating	1223 2025-09-30	1199 2025-09-16	1226.8 2025-09-30	1199 2025-09-16
Highest weighted rating	1203.4 2025-11-01	0 2025-09-16	1203.9 2025-11-01	0 2025-09-16
Highest weighted performance	0 2025-09-16	0 2025-09-16	0 2025-09-16	0 2025-09-16

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1220.7	1200	1222.8	1200
Analysis
Rating	1220.7	1200	1222.8	1200
Raw rating	1220.7	1200	1222.8	1200
Weighted rating	1203.4	1200	1203.9
Weighted performance	0	0	0
K-factor	36	40	36	40
Floor	723	700	726.8	700
Max/Min rating change allowed	161	165.8	160.5	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	1220.7	1200	1222.8	1200
New weighted rating	1204.9	1200	1205.5	1200
New weighted performance	0	0	0	0
Temp new rating	1220.7	1200	1222.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1220.7	1200	1222.8	1200
New K-factor	36	36	36	36
New floor	723	700	726.8	700

Item	Main	Rapid
	0	0
	11	11
	0	0
	0	0
	0	0
	0	0
History	11	11

Games since
	Main 11	Standard 0		Rapid 11		Blitz 0
Gender	M
Age group	U12
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U12	-1		-1		-1
U12 M	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U12	-1		-1		-1
U12 M	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U12	-1		-1		-1
U12 M	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
M	-1		-1		-1
U12	-1		-1		-1
U12 M	-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	11	6	54.55	38.6	1237.6	1276.2
Standard	0	0	0	0	0	0
Rapid	11	6	54.55	38.6	1237.6	1276.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	11	6	54.55	38.6	1237.6	1276.2
Standard	0	0	0	0	0	0
Rapid	11	6	54.55	38.6	1237.6	1276.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1220.7	1200	1222.8	1200
2025-09-30	1223	1200	1226.8	1200
2025-09-01	1200	1200	1200	1200
2025-08-01	1200	1200	1200	1200
2025-07-01	1200	1200	1200	1200
2025-06-01	1200	1200	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	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	SACSSA Nationals 2025 (U11 Boys)	2025-10-18	2025-10-18	Rapid	Ekurhuleni (GE)	6	6	3	Yes	Analysis
2	G7 Regional Chess Tournament 2025 (U11)	2025-09-13	2025-09-13	Rapid	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	SACSSA Nationals 2025 (U11 Boys)	2025-10-18	2025-10-18	Rapid	Ekurhuleni (GE)	6	6	3	Yes	Analysis
2	G7 Regional Chess Tournament 2025 (U11)	2025-09-13	2025-09-13	Rapid	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis

#	Games	Start				End
1	2	Tournament SACSSA Nationals 2025				Tournament SACSSA Nationals 2025
		date 2025-10-18	rnd 3	type Rapid	result 1	date 2025-10-18	rnd 4	type Rapid	result 1
		Opponent De Wet, T (Timothy)				Opponent Mtshawalana, K (Kuhle)
2	2	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 4	type Rapid	result 1	date 2025-09-13	rnd 5	type Rapid	result 1
		Opponent Molotsi, O (Olebogeng)				Opponent Thurman, H (Hayley)
3	1	Tournament SACSSA Nationals 2025				Tournament SACSSA Nationals 2025
		date 2025-10-18	rnd 6	type Rapid	result 1	date 2025-10-18	rnd 6	type Rapid	result 1
		Opponent Makhalemle, B (Boikano)				Opponent Makhalemle, B (Boikano)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 4	type Rapid	result 1	date 2025-09-13	rnd 5	type Rapid	result 1
		Opponent Molotsi, O (Olebogeng)				Opponent Thurman, H (Hayley)
2	1	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 2	type Rapid	result 1	date 2025-09-13	rnd 2	type Rapid	result 1
		Opponent Musau, G (Gabriella)				Opponent Musau, G (Gabriella)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 4	type Rapid	result 1	date 2025-09-13	rnd 5	type Rapid	result 1
		Opponent Molotsi, O (Olebogeng)				Opponent Thurman, H (Hayley)
2	1	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 2	type Rapid	result 1	date 2025-09-13	rnd 2	type Rapid	result 1
		Opponent Musau, G (Gabriella)				Opponent Musau, G (Gabriella)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 4	type Rapid	result 1	date 2025-09-13	rnd 5	type Rapid	result 1
		Opponent Molotsi, O (Olebogeng)				Opponent Thurman, H (Hayley)
2	1	Tournament G7 Regional Chess Tournament 2025				Tournament G7 Regional Chess Tournament 2025
		date 2025-09-13	rnd 2	type Rapid	result 1	date 2025-09-13	rnd 2	type Rapid	result 1
		Opponent Musau, G (Gabriella)				Opponent Musau, G (Gabriella)

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	Mtshawalana ,K (Kuhle)	1	1	425	0	0	0	1	1	425	0	0	0
1	Mtshawalana ,K (Kuhle)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
2	Eapen ,J (Johan)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Eapen ,J (Johan)	1	1561.8	1136.8	0	0	0	1	1314.3	1136.8	0	0	0
3	Molotsi ,O (Olebogeng)	1	1	425	0	0	0	1	1	425	0	0	0
3	Molotsi ,O (Olebogeng)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
4	Mngomezulu ,A (Aiden)	1	0	-425	0	0	0	1	0	-425	0	0	0
4	Mngomezulu ,A (Aiden)	1	1251.2	826.2	0	0	0	1	1273.7	826.2	0	0	0
5	De Wet ,T (Timothy)	1	1	425	0	0	0	1	1	425	0	0	0
5	De Wet ,T (Timothy)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
6	Weber ,R (Reuben)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Weber ,R (Reuben)	1	1199.7	774.7	0	0	0	1	1195.3	774.7	0	0	0
7	Musau ,G (Gabriella)	1	1	425	0	0	0	1	1	425	0	0	0
7	Musau ,G (Gabriella)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
8	Shakung ,T (Tshiamo)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Shakung ,T (Tshiamo)	1	1200	775	0	0	0	1	1200	775	0	0	0
9	Thurman ,H (Hayley)	1	1	425	0	0	0	1	1	425	0	0	0
9	Thurman ,H (Hayley)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Makhalemle ,B (Boikano)	1	1	425	0	0	0	1	1	425	0	0	0
10	Makhalemle ,B (Boikano)	1	1200.8	1625.8	0	0	0	1	1201.6	1625.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Gertze, J (Josiah)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms