Chess South Africa Ratings Database

PLAYER PAGE

Personal

Leeson, CL (Calib Lee)

Chess SA id

107087641

FIDE id

Date of birth

2007-12-18 (U20)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-03-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1268.5	1265.2	653.2	526
Raw rating	1268.5	1265.2	653.2	526
Weighted rating	1268.5	1265.2	653.2	526
Weighted performance	361.6	360.6	0	0
Floor	768.5	765.2	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	150.4	151.1	361.4	433.2
Highest rating	1282.3 2020-03-01	1278.9 2020-03-01	1200 2024-11-01	1200 2024-02-01
Highest raw rating	1268.5 2024-02-01	1265.2 2024-02-01	653.2 2024-02-01	526 2024-02-01
Highest weighted rating	1268.5 2024-02-01	1265.2 2024-02-01	653.2 2024-11-01	526 2024-11-01
Highest weighted performance	1282.3 2020-03-01	1278.9 2020-03-01	1200 2024-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1268.5	1265.2	653.2	526
Analysis
Rating	1268.5	1265.2	653.2	526
Raw rating	1268.5	1265.2	653.2	526
Weighted rating	1268.5	1265.2	653.2
Weighted performance	361.6	360.6	0
K-factor	36	36	40	40
Floor	768.5	765.2	500	500
Max/Min rating change allowed	150.4	151.1	361.4	433.2
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	1268.5	1265.2	653.2	526
New weighted rating	1268.5	1265.2	653.2	526
New weighted performance	354	353.1	0	0
Temp new rating	1268.5	1265.2	653.2	526
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1268.5	1265.2	653.2	526
New K-factor	36	36	40	40
New floor	768.5	765.2	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	118	108	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	94	45	47.87	-18.1	1073.2	1055.1
Standard	89	41	46.07	-33.4	1080.6	1047.2
Rapid	5	4	80	255	941.3	1196.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1268.5	1265.2	653.2	526
2025-09-30	1268.5	1265.2	653.2	526
2025-09-01	1268.5	1265.2	653.2	526
2025-08-01	1268.5	1265.2	653.2	526
2025-07-01	1268.5	1265.2	653.2	526
2025-06-01	1268.5	1265.2	653.2	526
2025-05-01	1268.5	1265.2	653.2	526
2025-04-01	1268.5	1265.2	653.2	526
2025-03-01	1268.5	1265.2	653.2	526
2025-02-01	1268.5	1265.2	653.2	526
2025-01-01	1268.5	1265.2	653.2	526
2024-12-01	1268.5	1265.2	653.2	526
2024-11-01	1268.5	1265.2	653.2	526
2024-10-01	1268.5	1265.2	653.2	526
2024-09-01	1268.5	1265.2	653.2	526
2024-08-01	1268.5	1265.2	653.2	526
2024-07-01	1268.5	1265.2	653.2	526
2024-09-01	1268.5	1265.2	653.2	526
2024-05-01	1268.5	1265.2	653.2	526
2024-04-01	1268.5	1265.2	653.2	526
2024-03-01	1268.5	1265.2	653.2	526
2024-02-01	1268.5	1265.2	653.2	526
2024-01-01	1268.5	1265.2	653.2	526
2023-12-01	1268.5	1265.2	653.2	526

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	2020 NMBCU Chess Trials 2 2020 (U14)	2020-03-07	2020-03-07	Standard	Nelson Mandela Bay (ENM)	5	4	3	Yes	Analysis
2	2020 Boardwalk Pearson Open Chess Festival (Open)	2020-03-14	2020-03-15	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
3	2020 NMBCU Chess Trial 1 (U14)	2020-02-08	2020-02-09	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	NMBYCC Closed 2019 (U14)	2019-07-26	2019-07-27	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
5	Nelson Mandela Bay Junior Trials 4 2019 (U14)	2019-07-12	2019-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	3	Yes	Analysis
6	NMBJCU Trials 3 2019 (U14)	2019-05-10	2019-05-11	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
7	Nelson Mandela Bay Junior Chess Trials 2 2019 (U14)	2019-04-05	2019-04-06	Standard	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis
8	NMBCU Trials 1 2019 (U14)	2019-03-08	2019-03-09	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
9	Ultimate Chess Open 2018 (C)	2018-11-30	2018-12-01	Standard	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
10	South African Junior Team Championships 2018 (U12B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	1.5	Yes	Analysis
11	NMBJC Closed 2018 (U12)	2018-07-27	2018-07-28	Standard	Nelson Mandela Bay (ENM)	6	6	1	Yes	Analysis
12	NMBJC Trials 4 2018 (U12)	2018-07-20	2018-07-21	Standard	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
13	NMB Youth Chess Trial 3 2018 (U12)	2018-05-11	2018-05-12	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
14	NMB Second Trials 2018 (U12)	2018-04-20	2018-04-22	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
15	NMB First Trails 2018 (U12)	2018-03-23	2018-03-24	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
16	Registration Tournament 2018 (B)	2018-02-23	2018-02-24	Standard	Nelson Mandela Bay (ENM)	5	5	2	Yes	Analysis
17	Despatch Open 2018 (B)	2018-02-17	2018-02-17	Rapid	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis

#	Games	Start				End
1	6	Tournament Nelson Mandela Bay Junior Trials 4 2019				Tournament NMBYCC Closed 2019
		date 2019-07-13	rnd 3	type Standard	result 1	date 2019-07-27	rnd 2	type Standard	result 0.5
		Opponent Beecroft, E (Ella-Skye)				Opponent Magadla, L (Lathitha)
2	4	Tournament 2020 NMBCU Chess Trials 2 2020				Tournament 2020 Boardwalk Pearson Open Chess Festival
		date 2020-03-07	rnd 3	type Standard	result 1	date 2020-03-14	rnd 1	type Standard	result 1
		Opponent Campher, C (Caden)				Opponent Smith, A (Andre)
3	3	Tournament NMBYCC Closed 2019				Tournament 2020 NMBCU Chess Trial 1
		date 2019-07-27	rnd 6	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Reddy, E (Evania)				Opponent Witbooi, A (Anneqwa)

#	Games	Start				End
1	6	Tournament Nelson Mandela Bay Junior Trials 4 2019				Tournament NMBYCC Closed 2019
		date 2019-07-13	rnd 3	type Standard	result 1	date 2019-07-27	rnd 2	type Standard	result 0.5
		Opponent Beecroft, E (Ella-Skye)				Opponent Magadla, L (Lathitha)
2	4	Tournament 2020 NMBCU Chess Trials 2 2020				Tournament 2020 Boardwalk Pearson Open Chess Festival
		date 2020-03-07	rnd 3	type Standard	result 1	date 2020-03-14	rnd 1	type Standard	result 1
		Opponent Campher, C (Caden)				Opponent Smith, A (Andre)
3	3	Tournament NMBYCC Closed 2019				Tournament 2020 NMBCU Chess Trial 1
		date 2019-07-27	rnd 6	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Reddy, E (Evania)				Opponent Witbooi, A (Anneqwa)

#	Games	Start				End
1	3	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 3	type Rapid	result 1
		Opponent Percock, A (Alwande)				Opponent Magadla, L (Lathitha)
2	1	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 5	type Rapid	result 1	date 2018-02-17	rnd 5	type Rapid	result 1
		Opponent Taljard, J (Julian)				Opponent Taljard, J (Julian)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2020 NMBCU Chess Trials 2 2020				Tournament 2020 Boardwalk Pearson Open Chess Festival
		date 2020-03-07	rnd 3	type Standard	result 1	date 2020-03-14	rnd 1	type Standard	result 1
		Opponent Campher, C (Caden)				Opponent Smith, A (Andre)
2	3	Tournament NMBYCC Closed 2019				Tournament 2020 NMBCU Chess Trial 1
		date 2019-07-27	rnd 6	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Reddy, E (Evania)				Opponent Witbooi, A (Anneqwa)
3	3	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 3	type Rapid	result 1
		Opponent Percock, A (Alwande)				Opponent Magadla, L (Lathitha)

#	Games	Start				End
1	4	Tournament 2020 NMBCU Chess Trials 2 2020				Tournament 2020 Boardwalk Pearson Open Chess Festival
		date 2020-03-07	rnd 3	type Standard	result 1	date 2020-03-14	rnd 1	type Standard	result 1
		Opponent Campher, C (Caden)				Opponent Smith, A (Andre)
2	3	Tournament NMBYCC Closed 2019				Tournament 2020 NMBCU Chess Trial 1
		date 2019-07-27	rnd 6	type Standard	result 1	date 2020-02-08	rnd 2	type Standard	result 1
		Opponent Reddy, E (Evania)				Opponent Witbooi, A (Anneqwa)
3	2	Tournament 2020 Boardwalk Pearson Open Chess Festival				Tournament 2020 Boardwalk Pearson Open Chess Festival
		date 2020-03-14	rnd 3	type Standard	result 1	date 2020-03-15	rnd 4	type Standard	result 1
		Opponent Munir, A (Ainy)				Opponent Twigg, G (Garen)

#	Games	Start				End
1	3	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 1	type Rapid	result 1	date 2018-02-17	rnd 3	type Rapid	result 1
		Opponent Percock, A (Alwande)				Opponent Magadla, L (Lathitha)
2	1	Tournament Despatch Open 2018				Tournament Despatch Open 2018
		date 2018-02-17	rnd 5	type Rapid	result 1	date 2018-02-17	rnd 5	type Rapid	result 1
		Opponent Taljard, J (Julian)				Opponent Taljard, J (Julian)

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	Williams ,CL (Cleveland Leigh)	6	0.5	-354.2	6	0.5	-354.2	0	0	0	0	0	0
1	Williams ,CL (Cleveland Leigh)	6	1030	675.8	6	1023.7	675.8	0	0	0	0	0	0
2	Pienaar ,KT (Keaton Thomas)	5	1.5	-170	4	1.5	-106.2	1	0	-425	0	0	0
2	Pienaar ,KT (Keaton Thomas)	5	1051.3	881.3	4	1091.8	945	1	725	626.3	0	0	0
3	Carolus ,CJ (Cayline Jade)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Carolus ,CJ (Cayline Jade)	3	1045.7	904	3	1045.4	904	0	0	0	0	0	0
4	Reddy ,E (Evania)	2	2	425	2	2	425	0	0	0	0	0	0
4	Reddy ,E (Evania)	2	879.3	1304.3	2	910.6	1304.3	0	0	0	0	0	0
5	Griezel ,R (Reuben)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Griezel ,R (Reuben)	2	780.6	355.6	2	786.4	355.6	0	0	0	0	0	0
6	Singwani ,T (Thabang Musa)	2	1	0	2	1	0	0	0	0	0	0	0
6	Singwani ,T (Thabang Musa)	2	1122.6	1122.6	2	1137.4	1122.6	0	0	0	0	0	0
7	Yoyo ,A (Alulutho)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Yoyo ,A (Alulutho)	2	1159.9	734.9	2	1160.9	734.9	0	0	0	0	0	0
8	Le Roux ,R (Roxanne)	2	2	425	2	2	425	0	0	0	0	0	0
8	Le Roux ,R (Roxanne)	2	1012.5	1437.5	2	971.6	1437.5	0	0	0	0	0	0
9	Lamont ,J (Joshua)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Lamont ,J (Joshua)	2	1011.4	586.4	2	1005.8	586.4	0	0	0	0	0	0
10	Rautenbach ,C (Cadyn)	2	1	0	2	1	0	0	0	0	0	0	0
10	Rautenbach ,C (Cadyn)	2	1189.1	1189.1	2	1187.4	1189.1	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

Leeson, CL (Calib Lee)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms