Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Klerk, W (Wihan)

Chess SA id

1110138291

FIDE id

Date of birth

2011-10-31 (U16)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-06-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1249	1250.4	1120	1200
Raw rating	1249	1250.4	1120	1200
Weighted rating	1244.3	1245.7	1120	1200
Weighted performance	1036.3	1037.4	0	0
Floor	749	750.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	154.6	154.3	185.8	165.8
Highest rating	1262.1 2024-06-01	1263.5 2024-06-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1249 2024-07-01	1250.4 2024-07-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1237.8 2025-08-01	1239 2025-08-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1262.1 2024-06-01	1263.5 2024-06-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1249	1250.4	1120	1200
Analysis
Rating	1249	1250.4	1120	1200
Raw rating	1249	1250.4	1120	1200
Weighted rating	1244.3	1245.7	1120
Weighted performance	1036.3	1037.4	0
K-factor	36	36	36	36
Floor	749	750.4	700	700
Max/Min rating change allowed	154.6	154.3	185.8	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	1249	1250.4	1120	1200
New weighted rating	1245.8	1247.3	1120	1200
New weighted performance	1028.9	1030	0	0
Temp new rating	1249	1250.4	1120	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1249	1250.4	1120	1200
New K-factor	36	36	36	36
New floor	749	750.4	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	38	38	0
	38	38	0
	33	26	7
	0	0	0
History	109	102	7

Games since
	Main 38	Standard 38		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	3642		1307		498
Male	2793		1008		378
U16	602		216		76
U16 Male	437		155		57
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	109	45	41.28	-74.1	1208.2	1134.1
Standard	102	43	42.16	-66.7	1211.2	1144.5
Rapid	7	2	28.57	-182.1	1163.9	981.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1249	1250.4	1120	1200
2025-09-30	1249	1250.4	1120	1200
2025-09-01	1249	1250.4	1120	1200
2025-08-01	1249	1250.4	1120	1200
2025-07-01	1249	1250.4	1120	1200
2025-06-01	1249	1250.4	1120	1200
2025-05-01	1249	1250.4	1120	1200
2025-04-01	1249	1250.4	1120	1200
2025-03-01	1249	1250.4	1120	1200
2025-02-01	1249	1250.4	1120	1200
2025-01-01	1249	1250.4	1120	1200
2024-12-01	1249	1250.4	1120	1200
2024-11-01	1249	1250.4	1120	1200
2024-10-01	1249	1250.4	1120	1200
2024-09-01	1249	1250.4	1120	1200
2024-08-01	1249	1250.4	1120	1200
2024-07-01	1249	1250.4	1120	1200
2024-09-01	1228.1	1235.8	1120	1200
2024-05-01	1211.1	1212.8	1120	1200
2024-04-01	1190.2	1189.2	1120	1200
2024-03-01	1180.9	1179.2	1120	1200
2024-02-01	1197.5	1199.6	1120	1200
2024-01-01	1144.7	1141.2	1120	1200
2023-12-01	1144.7	1141.2	1120	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	2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D)	2024-06-01	2024-06-01	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	2024 Tshwane South School District CLOSED Individual Championships (U13 Mixed)	2024-05-11	2024-05-11	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	2024 Milos Ristic Open Chess Tournament (U14)	2024-04-27	2024-04-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
4	2024 KSNG CHess Academy Open Tournament (D2)	2024-04-06	2024-04-06	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	2024 Chris Greyling Open Chess Tournament (D1)	2024-03-16	2024-03-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
6	2024 Blou Bul Open Chess Tournament (D)	2024-02-10	2024-02-10	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
7	2024 Tshwane Chess OPEN Registration Tournament (D1)	2024-01-27	2024-01-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
8	2024 Gauteng Inter-Region Chess Championship (U14C)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
9	2023 Etienne Lewis Closed Tournament (U14)	2023-08-25	2023-08-27	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
10	2023 Elize Steenkamp Open Tournament (D1)	2023-06-16	2023-06-17	Standard	Tshwane (GTP)	6	6	2.5	Yes	Analysis
11	2023 Tshwane South School District CLOSED Individual Championships (U13 Open)	2023-04-22	2023-04-22	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
12	2023 Milos Ristic Open Tournament (D2)	2023-04-27	2023-04-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	Chris Greyling Open Tournament 2023 (D2)	2023-03-21	2023-03-21	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
14	Ekhuruleni Chess Trials 1 2023 (U14)	2023-03-25	2023-03-25	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
15	Laerskool Constantiapark Open Chess Tournament 2023 (U14)	2023-02-18	2023-02-18	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis
16	2022 Etienne Lewis (U12 Open)	2022-09-02	2022-09-04	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
17	2022 Jacaranda Round Robin (V)	2022-07-30	2022-07-30	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
18	2022 Menlo Open Tournament (D)	2022-07-23	2022-07-23	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
19	D4 Individuals 2022 (U11 Open)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	2	Yes	Analysis
20	2022 Lubowski Open Tournament (D)	2022-04-09	2022-04-10	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
21	2022 Chris Greyling Open (D)	2022-03-12	2022-03-12	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis

#	Games	Start				End
1	4	Tournament Chris Greyling Open Tournament 2023				Tournament Chris Greyling Open Tournament 2023
		date 2023-03-21	rnd 2	type Standard	result 1	date 2023-03-21	rnd 5	type Standard	result 1
		Opponent Neumann, C (Christian)				Opponent Aikman, D (Desmond Gustav)
2	3	Tournament 2024 Chris Greyling Open Chess Tournament				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Mokoena, K (Kopano)				Opponent Botha, G (Gregory)
3	3	Tournament 2024 Tshwane Chess OPEN Registration Tournament				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-27	rnd 2	type Standard	result 1	date 2024-01-27	rnd 4	type Standard	result 1
		Opponent Mokwena, B (Bahati)				Opponent Rajagpaul, C (Cole)

#	Games	Start				End
1	4	Tournament Chris Greyling Open Tournament 2023				Tournament Chris Greyling Open Tournament 2023
		date 2023-03-21	rnd 2	type Standard	result 1	date 2023-03-21	rnd 5	type Standard	result 1
		Opponent Neumann, C (Christian)				Opponent Aikman, D (Desmond Gustav)
2	3	Tournament 2024 Chris Greyling Open Chess Tournament				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Mokoena, K (Kopano)				Opponent Botha, G (Gregory)
3	3	Tournament 2024 Tshwane Chess OPEN Registration Tournament				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-27	rnd 2	type Standard	result 1	date 2024-01-27	rnd 4	type Standard	result 1
		Opponent Mokwena, B (Bahati)				Opponent Rajagpaul, C (Cole)

#	Games	Start				End
1	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 6	type Rapid	result 1	date 2022-04-23	rnd 6	type Rapid	result 1
		Opponent Smit, L (Liam Christo)				Opponent Smit, L (Liam Christo)
2	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 2	type Rapid	result 1	date 2022-04-23	rnd 2	type Rapid	result 1
		Opponent Fourie, J (Johan)				Opponent Fourie, J (Johan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2024 Chris Greyling Open Chess Tournament				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Mokoena, K (Kopano)				Opponent Botha, G (Gregory)
2	3	Tournament 2024 Tshwane Chess OPEN Registration Tournament				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-27	rnd 2	type Standard	result 1	date 2024-01-27	rnd 4	type Standard	result 1
		Opponent Mokwena, B (Bahati)				Opponent Rajagpaul, C (Cole)
3	3	Tournament 2022 Jacaranda Round Robin				Tournament 2022 Jacaranda Round Robin
		date 2022-07-30	rnd 3	type Standard	result 1	date 2022-07-30	rnd 5	type Standard	result 1
		Opponent Boshoff, R (Reinhardt)				Opponent Loubser, L (Lara)

#	Games	Start				End
1	3	Tournament 2024 Chris Greyling Open Chess Tournament				Tournament 2024 Chris Greyling Open Chess Tournament
		date 2024-03-16	rnd 2	type Standard	result 1	date 2024-03-16	rnd 4	type Standard	result 1
		Opponent Mokoena, K (Kopano)				Opponent Botha, G (Gregory)
2	3	Tournament 2024 Tshwane Chess OPEN Registration Tournament				Tournament 2024 Tshwane Chess OPEN Registration Tournament
		date 2024-01-27	rnd 2	type Standard	result 1	date 2024-01-27	rnd 4	type Standard	result 1
		Opponent Mokwena, B (Bahati)				Opponent Rajagpaul, C (Cole)
3	3	Tournament 2022 Jacaranda Round Robin				Tournament 2022 Jacaranda Round Robin
		date 2022-07-30	rnd 3	type Standard	result 1	date 2022-07-30	rnd 5	type Standard	result 1
		Opponent Boshoff, R (Reinhardt)				Opponent Loubser, L (Lara)

#	Games	Start				End
1	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 6	type Rapid	result 1	date 2022-04-23	rnd 6	type Rapid	result 1
		Opponent Smit, L (Liam Christo)				Opponent Smit, L (Liam Christo)
2	1	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 2	type Rapid	result 1	date 2022-04-23	rnd 2	type Rapid	result 1
		Opponent Fourie, J (Johan)				Opponent Fourie, J (Johan)

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	Pretorius ,P (Pieter)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Pretorius ,P (Pieter)	3	1106.4	964.7	3	1116.4	964.7	0	0	0	0	0	0
2	Buchner ,E (Emil)	3	0	-425	2	0	-425	1	0	-425	0	0	0
2	Buchner ,E (Emil)	3	1244.5	819.5	2	1273.1	819.5	1	1200	819.5	0	0	0
3	Le Roux ,R (Reuben)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Le Roux ,R (Reuben)	2	1215.9	790.9	2	1209.1	790.9	0	0	0	0	0	0
4	Kheswa ,MZ (Manqoba Zamokuhle)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Kheswa ,MZ (Manqoba Zamokuhle)	2	1125.5	700.5	2	1130.2	700.5	0	0	0	0	0	0
5	Boshoff ,R (Reinhardt)	2	1	0	2	1	0	0	0	0	0	0	0
5	Boshoff ,R (Reinhardt)	2	1254.7	1254.7	2	1245.4	1254.7	0	0	0	0	0	0
6	Jacobs ,H (Hanno)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Jacobs ,H (Hanno)	2	1375.5	950.5	2	1368.4	950.5	0	0	0	0	0	0
7	Janse Van Rensburg ,A (Andreas)	2	1	0	2	1	0	0	0	0	0	0	0
7	Janse Van Rensburg ,A (Andreas)	2	1264.7	1264.7	2	1272.3	1264.7	0	0	0	0	0	0
8	Snyman ,J (Jacques)	2	1	0	2	1	0	0	0	0	0	0	0
8	Snyman ,J (Jacques)	2	1077.9	1077.9	2	1055.4	1077.9	0	0	0	0	0	0
9	Coetzee ,M (Marko)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Coetzee ,M (Marko)	2	1221.4	796.4	2	1200.9	796.4	0	0	0	0	0	0
10	Moolman ,C (Christian)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Moolman ,C (Christian)	2	1190	765	2	1185.6	765	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

De Klerk, W (Wihan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms