Chess South Africa Ratings Database

PLAYER PAGE

Personal

Lederman, A (Azriel)

Chess SA id

1120133817

FIDE id

Date of birth

2012-06-12 (U14)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-01-28

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1265.6	1249.5	1230.8	1200
Raw rating	1265.6	1249.5	1230.8	1200
Weighted rating	1265.4	1249.2	1230.8	1200
Weighted performance	953.9	0	0	0
Floor	765.6	749.5	730.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	151	154.5	158.7	165.8
Highest rating	1265.6 2024-02-01	1249.5 2024-02-01	1230.8 2024-02-01	1200 2018-10-01
Highest raw rating	1265.6 2024-02-01	1249.5 2024-02-01	1230.8 2024-02-01	1200 2024-02-01
Highest weighted rating	1263.9 2025-08-01	1248 2025-08-01	1229.7 2025-08-01	1200 2018-10-01
Highest weighted performance	1256.6 2024-01-01	1200 2020-01-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1265.6	1249.5	1230.8	1200
Analysis
Rating	1265.6	1249.5	1230.8	1200
Raw rating	1265.6	1249.5	1230.8	1200
Weighted rating	1265.4	1249.2	1230.8
Weighted performance	953.9	0	0
K-factor	36	36	36	36
Floor	765.6	749.5	730.8	700
Max/Min rating change allowed	151	154.5	158.7	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	1265.6	1249.5	1230.8	1200
New weighted rating	1265.5	1249.4	1230.8	1200
New weighted performance	946.3	0	0	0
Temp new rating	1265.6	1249.5	1230.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1265.6	1249.5	1230.8	1200
New K-factor	36	36	36	36
New floor	765.6	749.5	730.8	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	5	5	0
	11	5	6
	10	10	0
	4	0	4
History	30	20	10

Games since
	Main 11	Standard 5		Rapid 6		Blitz 0
Gender	Male
Age group	U14
Region	Johannesburg Metro (GJM)
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	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	15.5	51.67	14.2	1281.1	1295.3
Standard	20	10	50	0	1275.4	1275.4
Rapid	10	5.5	55	42.5	1292.4	1334.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1265.6	1249.5	1230.8	1200
2025-09-30	1265.6	1249.5	1230.8	1200
2025-09-01	1265.6	1249.5	1230.8	1200
2025-08-01	1265.6	1249.5	1230.8	1200
2025-07-01	1265.6	1249.5	1230.8	1200
2025-06-01	1265.6	1249.5	1230.8	1200
2025-05-01	1265.6	1249.5	1230.8	1200
2025-04-01	1265.6	1249.5	1230.8	1200
2025-03-01	1265.6	1249.5	1230.8	1200
2025-02-01	1265.6	1249.5	1230.8	1200
2025-01-01	1265.6	1249.5	1230.8	1200
2024-12-01	1265.6	1249.5	1230.8	1200
2024-11-01	1265.6	1249.5	1230.8	1200
2024-10-01	1265.6	1249.5	1230.8	1200
2024-09-01	1265.6	1249.5	1230.8	1200
2024-08-01	1265.6	1249.5	1230.8	1200
2024-07-01	1265.6	1249.5	1230.8	1200
2024-09-01	1265.6	1249.5	1230.8	1200
2024-05-01	1265.6	1249.5	1230.8	1200
2024-04-01	1265.6	1249.5	1230.8	1200
2024-03-01	1265.6	1249.5	1230.8	1200
2024-02-01	1265.6	1249.5	1230.8	1200
2024-01-01	1244.4	1219.3	1230.8	1200
2023-12-01	1244.4	1219.3	1230.8	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	JMC Kick Off Tournament 2024 (D)	2024-01-28	2024-01-28	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
2	Chess Power House Festive Rapid 2023 (Grade 3-7)	2023-12-15	2023-12-15	Rapid	Johannesburg Metro (GJM)	6	6	4	Yes	Analysis
3	ThinkChess 6 July 2023	2023-07-06	2023-07-06	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
4	JMC Trials 1 - Laerskool Fontainebleau 2022 (U12)	2022-07-24	2022-07-24	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
5	Goforchess Junior Championship 2022 (Grayston)	2022-03-06	2022-03-06	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	Pinnacle College Waterfall Open (Pinnacle)	2021-10-02	2021-10-03	Standard	Johannesburg Metro (GJM)	6	0	0	No	Analysis
7	JMC Helpmekaar 2021 (U10)	2021-09-06	2021-09-06	Rapid	Johannesburg Metro (GJM)	5	4	1.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament JMC Kick Off Tournament 2024				Tournament JMC Kick Off Tournament 2024
		date 2024-01-28	rnd 1	type Standard	result 1	date 2024-01-28	rnd 3	type Standard	result 1
		Opponent Parag, A (Aadya)				Opponent Ma, M (Matthew)
2	3	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 3	type Rapid	result 1	date 2023-12-15	rnd 5	type Rapid	result 1
		Opponent Van Wyk, P (Paul)				Opponent Mlilo, S (Sibongisiwe)
3	3	Tournament Goforchess Junior Championship 2022				Tournament Goforchess Junior Championship 2022
		date 2022-03-06	rnd 2	type Standard	result 1	date 2022-03-06	rnd 4	type Standard	result 1
		Opponent Exarchos, I (Isabella)				Opponent Johnson, A (Ashar)

#	Games	Start				End
1	3	Tournament JMC Kick Off Tournament 2024				Tournament JMC Kick Off Tournament 2024
		date 2024-01-28	rnd 1	type Standard	result 1	date 2024-01-28	rnd 3	type Standard	result 1
		Opponent Parag, A (Aadya)				Opponent Ma, M (Matthew)
2	3	Tournament Goforchess Junior Championship 2022				Tournament Goforchess Junior Championship 2022
		date 2022-03-06	rnd 2	type Standard	result 1	date 2022-03-06	rnd 4	type Standard	result 1
		Opponent Exarchos, I (Isabella)				Opponent Johnson, A (Ashar)
3	2	Tournament JMC Trials 1 - Laerskool Fontainebleau 2022				Tournament JMC Trials 1 - Laerskool Fontainebleau 2022
		date 2022-07-24	rnd 3	type Standard	result 1	date 2022-07-24	rnd 4	type Standard	result 1
		Opponent Naidoo, D (Dhiya)				Opponent Ismael, Z (Ziya)

#	Games	Start				End
1	3	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 3	type Rapid	result 1	date 2023-12-15	rnd 5	type Rapid	result 1
		Opponent Van Wyk, P (Paul)				Opponent Mlilo, S (Sibongisiwe)
2	3	Tournament JMC Helpmekaar 2021				Tournament Chess Power House Festive Rapid 2023
		date 2021-09-06	rnd 4	type Rapid	result 1	date 2023-12-15	rnd 1	type Rapid	result 1
		Opponent Horne, K (Kian Louis)				Opponent Nkuna, I (Inathi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament JMC Kick Off Tournament 2024				Tournament JMC Kick Off Tournament 2024
		date 2024-01-28	rnd 1	type Standard	result 1	date 2024-01-28	rnd 3	type Standard	result 1
		Opponent Parag, A (Aadya)				Opponent Ma, M (Matthew)
2	3	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 3	type Rapid	result 1	date 2023-12-15	rnd 5	type Rapid	result 1
		Opponent Van Wyk, P (Paul)				Opponent Mlilo, S (Sibongisiwe)
3	3	Tournament Goforchess Junior Championship 2022				Tournament Goforchess Junior Championship 2022
		date 2022-03-06	rnd 2	type Standard	result 1	date 2022-03-06	rnd 4	type Standard	result 1
		Opponent Exarchos, I (Isabella)				Opponent Johnson, A (Ashar)

#	Games	Start				End
1	3	Tournament JMC Kick Off Tournament 2024				Tournament JMC Kick Off Tournament 2024
		date 2024-01-28	rnd 1	type Standard	result 1	date 2024-01-28	rnd 3	type Standard	result 1
		Opponent Parag, A (Aadya)				Opponent Ma, M (Matthew)
2	3	Tournament Goforchess Junior Championship 2022				Tournament Goforchess Junior Championship 2022
		date 2022-03-06	rnd 2	type Standard	result 1	date 2022-03-06	rnd 4	type Standard	result 1
		Opponent Exarchos, I (Isabella)				Opponent Johnson, A (Ashar)
3	2	Tournament JMC Trials 1 - Laerskool Fontainebleau 2022				Tournament JMC Trials 1 - Laerskool Fontainebleau 2022
		date 2022-07-24	rnd 3	type Standard	result 1	date 2022-07-24	rnd 4	type Standard	result 1
		Opponent Naidoo, D (Dhiya)				Opponent Ismael, Z (Ziya)

#	Games	Start				End
1	3	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 3	type Rapid	result 1	date 2023-12-15	rnd 5	type Rapid	result 1
		Opponent Van Wyk, P (Paul)				Opponent Mlilo, S (Sibongisiwe)
2	1	Tournament Chess Power House Festive Rapid 2023				Tournament Chess Power House Festive Rapid 2023
		date 2023-12-15	rnd 1	type Rapid	result 1	date 2023-12-15	rnd 1	type Rapid	result 1
		Opponent Nkuna, I (Inathi)				Opponent Nkuna, I (Inathi)
3	1	Tournament JMC Helpmekaar 2021				Tournament JMC Helpmekaar 2021
		date 2021-09-06	rnd 4	type Rapid	result 1	date 2021-09-06	rnd 4	type Rapid	result 1
		Opponent Horne, K (Kian Louis)				Opponent Horne, K (Kian Louis)

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	Ismael ,Z (Ziya)	1	1	425	1	1	425	0	0	0	0	0	0
1	Ismael ,Z (Ziya)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
2	Exarchos ,I (Isabella)	1	1	425	1	1	425	0	0	0	0	0	0
2	Exarchos ,I (Isabella)	1	1227.6	1652.6	1	1234.4	1652.6	0	0	0	0	0	0
3	Malebye ,T (Tshimega)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Malebye ,T (Tshimega)	1	1216	791	1	1213.2	791	0	0	0	0	0	0
4	Ma ,M (Matthew)	1	1	425	1	1	425	0	0	0	0	0	0
4	Ma ,M (Matthew)	1	1419.6	1844.6	1	1417	1844.6	0	0	0	0	0	0
5	Kojetin ,C (Connor)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Kojetin ,C (Connor)	1	1322.6	897.6	1	1295.2	897.6	0	0	0	0	0	0
6	Bazhko ,M (Mikhail)	1	1	425	1	1	425	0	0	0	0	0	0
6	Bazhko ,M (Mikhail)	1	1051.7	1476.7	1	1029.2	1476.7	0	0	0	0	0	0
7	Deng ,J (Jinyuan)	1	1	425	1	1	425	0	0	0	0	0	0
7	Deng ,J (Jinyuan)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Johnson ,A (Ashar)	1	1	425	1	1	425	0	0	0	0	0	0
8	Johnson ,A (Ashar)	1	1232	1657	1	1223	1657	0	0	0	0	0	0
9	Botha ,CA (Cathri Amari)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Botha ,CA (Cathri Amari)	1	1443.2	1018.2	1	1441.4	1018.2	0	0	0	0	0	0
10	D`Alton ,E (Ezra)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	D`Alton ,E (Ezra)	1	1336.5	911.5	1	1330.4	911.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Lederman, A (Azriel)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms