Chess South Africa Ratings Database

PLAYER PAGE

Personal

Serdyn, W (Willem)

Chess SA id

1130161521

FIDE id

Date of birth

2013-01-10 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-08-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1188.8	1200	1182	1200
Raw rating	1188.8	1200	1182	1200
Weighted rating	1188.2	1200	1181.5	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	168.5	165.8	170.1	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2024-03-01	1200 2019-12-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2024-03-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1188.8	1200	1182	1200
Analysis
Rating	1188.8	1200	1182	1200
Raw rating	1188.8	1200	1182	1200
Weighted rating	1188.2	1200	1181.5
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	168.5	165.8	170.1	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	1188.8	1200	1182	1200
New weighted rating	1188.2	1200	1181.5	1200
New weighted performance	0	0	0	0
Temp new rating	1188.8	1200	1182	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1188.8	1200	1182	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Rapid
	0	0
	0	0
	5	5
	6	6
	0	0
	0	0
History	11	11

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
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	11	4.5	40.91	-77.3	1214.8	1137.5
Standard	0	0	0	0	0	0
Rapid	11	4.5	40.91	-77.3	1214.8	1137.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1188.8	1200	1182	1200
2025-09-01	1188.8	1200	1182	1200
2025-08-01	1188.8	1200	1182	1200
2025-07-01	1188.8	1200	1182	1200
2025-06-01	1188.8	1200	1182	1200
2025-05-01	1188.8	1200	1182	1200
2025-04-01	1188.8	1200	1182	1200
2025-03-01	1188.8	1200	1182	1200
2025-02-01	1188.6	1200	1182	1200
2025-01-01	1184.6	1200	1179.1	1200
2024-12-01	1184.6	1200	1179.1	1200
2024-11-01	1184.6	1200	1179.1	1200
2024-10-01	1184.6	1200	1179.1	1200
2024-09-01	1184.6	1200	1179.1	1200
2024-08-01	1190.9	1200	1182.7	1200
2024-07-01	1190.9	1200	1182.7	1200
2024-06-01	1190.9	1200	1182.7	1200
2024-08-01	1190.9	1200	1182.7	1200
2024-04-01	1190.9	1200	1182.7	1200
2024-03-01	1190.9	1200	1182.7	1200
2024-02-01	1190.9	1200	1182.7	1200
2024-01-01	1190.9	1200	1182.7	1200
2023-12-01	1190.9	1200	1182.7	1200
2023-11-01	1190.9	1200	1182.7	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	Stellenbosch Primary 2024 (U11)	2024-08-17	2024-08-17	Rapid	Cape Winelands (WCW)	5	5	2	Yes	Analysis
2	Stellenbosch Primary Chess Tournament 2023 (U12)	2023-08-19	2023-08-19	Rapid	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Stellenbosch Primary Chess Tournament 2023				Tournament Stellenbosch Primary Chess Tournament 2023
		date 2023-08-19	rnd 2	type Rapid	result 1	date 2023-08-19	rnd 4	type Rapid	result 1
		Opponent Rossouw, A (Anja)				Opponent Nkosinathi, L (Lukhele)
2	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 4	type Rapid	result 1	date 2024-08-17	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, L (Lily)				Opponent Geldenhuys, L (Lily)
3	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 2	type Rapid	result 1
		Opponent Bronkhorst, C (Cornell)				Opponent Bronkhorst, C (Cornell)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Stellenbosch Primary Chess Tournament 2023				Tournament Stellenbosch Primary Chess Tournament 2023
		date 2023-08-19	rnd 2	type Rapid	result 1	date 2023-08-19	rnd 4	type Rapid	result 1
		Opponent Rossouw, A (Anja)				Opponent Nkosinathi, L (Lukhele)
2	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 4	type Rapid	result 1	date 2024-08-17	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, L (Lily)				Opponent Geldenhuys, L (Lily)
3	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 2	type Rapid	result 1
		Opponent Bronkhorst, C (Cornell)				Opponent Bronkhorst, C (Cornell)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 4	type Rapid	result 1	date 2024-08-17	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, L (Lily)				Opponent Geldenhuys, L (Lily)
2	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 2	type Rapid	result 1
		Opponent Bronkhorst, C (Cornell)				Opponent Bronkhorst, C (Cornell)
3	1	Tournament Stellenbosch Primary Chess Tournament 2023				Tournament Stellenbosch Primary Chess Tournament 2023
		date 2023-08-19	rnd 4	type Rapid	result 1	date 2023-08-19	rnd 4	type Rapid	result 1
		Opponent Nkosinathi, L (Lukhele)				Opponent Nkosinathi, L (Lukhele)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 4	type Rapid	result 1	date 2024-08-17	rnd 4	type Rapid	result 1
		Opponent Geldenhuys, L (Lily)				Opponent Geldenhuys, L (Lily)
2	1	Tournament Stellenbosch Primary 2024				Tournament Stellenbosch Primary 2024
		date 2024-08-17	rnd 2	type Rapid	result 1	date 2024-08-17	rnd 2	type Rapid	result 1
		Opponent Bronkhorst, C (Cornell)				Opponent Bronkhorst, C (Cornell)
3	1	Tournament Stellenbosch Primary Chess Tournament 2023				Tournament Stellenbosch Primary Chess Tournament 2023
		date 2023-08-19	rnd 4	type Rapid	result 1	date 2023-08-19	rnd 4	type Rapid	result 1
		Opponent Nkosinathi, L (Lukhele)				Opponent Nkosinathi, L (Lukhele)

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	Bronkhorst ,C (Cornell)	1	1	425	0	0	0	1	1	425	0	0	0
1	Bronkhorst ,C (Cornell)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
2	Els ,J (Josua)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Els ,J (Josua)	1	1229.5	804.5	0	0	0	1	1291.5	804.5	0	0	0
3	Conradie ,J (Johandre)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	Conradie ,J (Johandre)	1	1208.6	783.6	0	0	0	1	1241.2	783.6	0	0	0
4	Nkosinathi ,L (Lukhele)	1	1	425	0	0	0	1	1	425	0	0	0
4	Nkosinathi ,L (Lukhele)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
5	Philander ,L (Liam)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Philander ,L (Liam)	1	1291	866	0	0	0	1	1310.8	866	0	0	0
6	Kuypers ,P (Parker)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Kuypers ,P (Parker)	1	1338.4	913.4	0	0	0	1	1273.4	913.4	0	0	0
7	Rossouw ,A (Anja)	1	1	425	0	0	0	1	1	425	0	0	0
7	Rossouw ,A (Anja)	1	1118.1	1543.1	0	0	0	1	1082.8	1543.1	0	0	0
8	Janse Van Rensburg ,T (Tj)	1	0	-425	0	0	0	1	0	-425	0	0	0
8	Janse Van Rensburg ,T (Tj)	1	1196.9	771.9	0	0	0	1	1269	771.9	0	0	0
9	Geldenhuys ,L (Lily)	1	1	425	0	0	0	1	1	425	0	0	0
9	Geldenhuys ,L (Lily)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
10	Calvert ,C (Caylim)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
10	Calvert ,C (Caylim)	1	1179.5	1179.5	0	0	0	1	1168.7	1179.5	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Serdyn, W (Willem)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms