Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pelzer, J (Janco)

Chess SA id

1160314771

FIDE id

Date of birth

2016-02-16 (U10)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1148.7

Item	Main	Standard	Rapid	Blitz
Rating	1227.7	1235	1200	1200
Raw rating	1227.7	1235	1200	1200
Weighted rating	1205.9	1207.5	1200	1200
Weighted performance	0	0	0	0
Floor	727.7	735	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	159.4	157.8	165.8	165.8
Highest rating	1227.7 2025-08-01	1235 2025-08-01	1200 2025-03-01	1200 2025-03-01
Highest raw rating	1227.7 2025-08-01	1235 2025-08-01	1200 2025-03-01	1200 2025-03-01
Highest weighted rating	1201.7 2025-08-01	1202.2 2025-08-01	1200 2025-03-01	1200 2025-03-01
Highest weighted performance	0 1900-01-01	0 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1227.7	1235	1200	1200
Analysis
Rating	1227.7	1235	1200	1200
Raw rating	1227.7	1235	1200	1200
Weighted rating	1205.9	1207.5	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	727.7	735	700	700
Max/Min rating change allowed	159.4	157.8	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	1227.7	1235	1200	1200
New weighted rating	1207.9	1210	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1227.7	1235	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1227.7	1235	1200	1200
New K-factor	36	36	36	36
New floor	727.7	735	700	700

Item	Main	Standard
	0	0
	19	19
	0	0
	0	0
	0	0
	0	0
History	19	19

Games since
	Main 19	Standard 19		Rapid 0		Blitz 0
Gender	Male
Age group	U10
Region	West Rand (GWR)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	19	7.5	39.47	-89.5	1235.7	1146.2
Standard	19	7.5	39.47	-89.5	1235.7	1146.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	19	7.5	39.47	-89.5	1235.7	1146.2
Standard	19	7.5	39.47	-89.5	1235.7	1146.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1227.7	1235	1200	1200
2025-09-01	1227.7	1235	1200	1200
2025-08-01	1227.7	1235	1200	1200
2025-07-01	1197.7	1197.1	1200	1200
2025-06-01	1199.1	1198.9	1200	1200
2025-05-01	1199.7	1199.7	1200	1200
2025-04-01	1199.6	1199.4	1200	1200
2025-03-01	1197.1	1196.5	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
2024-06-01	1200	1200	1200	1200
2024-08-01	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
2023-11-01	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	2025 D2 Schools League Finals (U9)	2025-07-26	2025-07-26	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
2	West Rand Open 2.0 2025 (U10)	2025-06-07	2025-06-07	Standard	West Rand (GWR)	5	4	1	Yes	Analysis
3	2025 D2 Schools Individuals (U9 Open)	2025-05-09	2025-05-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
4	2025 West Rand Open (U10)	2025-02-08	2025-02-08	Standard	West Rand (GWR)	5	5	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 D2 Schools League Finals (U9)	2025-07-26	2025-07-26	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
2	West Rand Open 2.0 2025 (U10)	2025-06-07	2025-06-07	Standard	West Rand (GWR)	5	4	1	Yes	Analysis
3	2025 D2 Schools Individuals (U9 Open)	2025-05-09	2025-05-09	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
4	2025 West Rand Open (U10)	2025-02-08	2025-02-08	Standard	West Rand (GWR)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mpongo, O (Ontlametse)				Opponent Britz, W (Wian)
2	1	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Abbas, A (Ayaan)				Opponent Abbas, A (Ayaan)
3	1	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Pretorius, K (Keandre)

#	Games	Start				End
1	2	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mpongo, O (Ontlametse)				Opponent Britz, W (Wian)
2	1	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Abbas, A (Ayaan)				Opponent Abbas, A (Ayaan)
3	1	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Pretorius, K (Keandre)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mpongo, O (Ontlametse)				Opponent Britz, W (Wian)
2	1	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Abbas, A (Ayaan)				Opponent Abbas, A (Ayaan)
3	1	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Pretorius, K (Keandre)

#	Games	Start				End
1	2	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 1	type Standard	result 1	date 2025-07-26	rnd 2	type Standard	result 1
		Opponent Mpongo, O (Ontlametse)				Opponent Britz, W (Wian)
2	1	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 4	type Standard	result 1	date 2025-07-26	rnd 4	type Standard	result 1
		Opponent Abbas, A (Ayaan)				Opponent Abbas, A (Ayaan)
3	1	Tournament West Rand Open 2.0 2025				Tournament West Rand Open 2.0 2025
		date 2025-06-07	rnd 4	type Standard	result 1	date 2025-06-07	rnd 4	type Standard	result 1
		Opponent Pretorius, K (Keandre)				Opponent Pretorius, K (Keandre)

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	de Beer ,H (Handre)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	de Beer ,H (Handre)	2	1199.2	774.2	2	1199.1	774.2	0	0	0	0	0	0
2	Abbas ,A (Ayaan)	1	1	425	1	1	425	0	0	0	0	0	0
2	Abbas ,A (Ayaan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Britz ,W (Wian)	1	1	425	1	1	425	0	0	0	0	0	0
3	Britz ,W (Wian)	1	1328.7	1753.7	1	1331.7	1753.7	0	0	0	0	0	0
4	Mpongo ,O (Ontlametse)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mpongo ,O (Ontlametse)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Grobler ,L (Luc Benjamin)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Grobler ,L (Luc Benjamin)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Steyn ,K (Kahn)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Steyn ,K (Kahn)	1	1371.6	946.6	1	1358.9	946.6	0	0	0	0	0	0
7	Tuck ,L (Lihan)	1	1	425	1	1	425	0	0	0	0	0	0
7	Tuck ,L (Lihan)	1	1142.8	1567.8	1	1133.1	1567.8	0	0	0	0	0	0
8	Jaji ,M (Michael)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Jaji ,M (Michael)	1	1259.5	834.5	1	1270.9	834.5	0	0	0	0	0	0
9	Seome ,K (Keotshepa)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Seome ,K (Keotshepa)	1	1250.3	825.3	1	1247.9	825.3	0	0	0	0	0	0
10	Ackermann ,C (Caleb Samuel)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Ackermann ,C (Caleb Samuel)	1	1311.8	886.8	1	1330.7	886.8	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

Pelzer, J (Janco)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms