Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Villiers, Z (Zach)

Chess SA id

1130314247

FIDE id

Date of birth

2013-06-18 (U14)

Gender

Male

Region

Frances Baard (NCF)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-20

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1203	1203.2	1200	1200
Raw rating	1203	1203.2	1200	1200
Weighted rating	1199.6	1199.6	1200	1200
Weighted performance	0	0	0	0
Floor	703	703.2	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	165.1	165.1	165.8	165.8
Highest rating	1203 2025-09-30	1203.2 2025-09-30	1200 2025-03-01	1200 2025-03-01
Highest raw rating	1203 2025-09-30	1203.2 2025-09-30	1200 2025-03-01	1200 2025-03-01
Highest weighted rating	1200 2025-02-03	1200 2025-02-03	1200 2025-03-01	1200 2025-03-01
Highest weighted performance	1200 1900-01-01	1200 1900-01-01	1200 1900-01-01	1200 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1203	1203.2	1200	1200
Analysis
Rating	1203	1203.2	1200	1200
Raw rating	1203	1203.2	1200	1200
Weighted rating	1199.6	1199.6	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	703	703.2	700	700
Max/Min rating change allowed	165.1	165.1	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	1203	1203.2	1200	1200
New weighted rating	1199.9	1199.9	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1203	1203.2	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1203	1203.2	1200	1200
New K-factor	36	36	36	36
New floor	703	703.2	700	700

Item	Main	Standard	Rapid
	0	0	0
	9	9	0
	5	0	5
	0	0	0
	0	0	0
	0	0	0
History	14	9	5

Games since
	Main 14	Standard 9		Rapid 5		Blitz 0
Gender	Male
Age group	U14
Region	Frances Baard (NCF)
Province	Northern Cape (NC)
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	9	2.5	27.78	-188.9	1195.1	1006.2
Standard	9	2.5	27.78	-188.9	1195.1	1006.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	14	4	28.57	-182.1	1213.2	1031.1
Standard	9	2.5	27.78	-188.9	1195.1	1006.2
Rapid	5	1.5	30	-170	1245.9	1075.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1203	1203.2	1200	1200
2025-09-01	1199.4	1200	1200	1200
2025-08-01	1199.4	1200	1200	1200
2025-07-01	1199.4	1199.3	1200	1200
2025-06-01	1199.4	1199.3	1200	1200
2025-05-01	1199.4	1199.3	1200	1200
2025-04-01	1199.1	1198.9	1200	1200
2025-03-01	1194.1	1192.7	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 Frances Baard Schools Chess Festival 0.2 (U13)	2025-09-20	2025-09-20	Standard	Frances Baard (NCF)	5	5	2.5	Yes	Analysis
2	2025 Frances Baard Schools Open (U13)	2025-02-01	2025-02-01	Standard	Frances Baard (NCF)	5	4	0	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Frances Baard Schools Chess Festival 0.2 (U13)	2025-09-20	2025-09-20	Standard	Frances Baard (NCF)	5	5	2.5	Yes	Analysis
2	2025 Frances Baard Schools Open (U13)	2025-02-01	2025-02-01	Standard	Frances Baard (NCF)	5	4	0	Yes	Analysis
3	2024 Frances Baard Schools Teams (Primary School)	2024-03-02	2024-03-02	Rapid	Frances Baard (NCF)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	2	Tournament 2025 Frances Baard Schools Chess Festival 0.2				Tournament 2025 Frances Baard Schools Chess Festival 0.2
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 2	type Standard	result 1
		Opponent Molaoa, K (Kgotso)				Opponent Mtwana, A (Avuyile)
2	1	Tournament 2025 Frances Baard Schools Chess Festival 0.2				Tournament 2025 Frances Baard Schools Chess Festival 0.2
		date 2025-09-20	rnd 5	type Standard	result 0.5	date 2025-09-20	rnd 5	type Standard	result 0.5
		Opponent Molathwe, M (Mercy)				Opponent Molathwe, M (Mercy)
3	1	Tournament 2024 Frances Baard Schools Teams				Tournament 2024 Frances Baard Schools Teams
		date 2024-03-02	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Anderson, J (James)				Opponent Anderson, J (James)

#	Games	Start				End
1	2	Tournament 2025 Frances Baard Schools Chess Festival 0.2				Tournament 2025 Frances Baard Schools Chess Festival 0.2
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 2	type Standard	result 1
		Opponent Molaoa, K (Kgotso)				Opponent Mtwana, A (Avuyile)
2	1	Tournament 2025 Frances Baard Schools Chess Festival 0.2				Tournament 2025 Frances Baard Schools Chess Festival 0.2
		date 2025-09-20	rnd 5	type Standard	result 0.5	date 2025-09-20	rnd 5	type Standard	result 0.5
		Opponent Molathwe, M (Mercy)				Opponent Molathwe, M (Mercy)

#	Games	Start				End
1	1	Tournament 2024 Frances Baard Schools Teams				Tournament 2024 Frances Baard Schools Teams
		date 2024-03-02	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Anderson, J (James)				Opponent Anderson, J (James)
2	1	Tournament 2024 Frances Baard Schools Teams				Tournament 2024 Frances Baard Schools Teams
		date 2024-03-02	rnd 2	type Rapid	result 0.5	date 2024-03-02	rnd 2	type Rapid	result 0.5
		Opponent Mothabeng, K (Kutlwano)				Opponent Mothabeng, K (Kutlwano)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament 2025 Frances Baard Schools Chess Festival 0.2				Tournament 2025 Frances Baard Schools Chess Festival 0.2
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 2	type Standard	result 1
		Opponent Molaoa, K (Kgotso)				Opponent Mtwana, A (Avuyile)
2	1	Tournament 2024 Frances Baard Schools Teams				Tournament 2024 Frances Baard Schools Teams
		date 2024-03-02	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Anderson, J (James)				Opponent Anderson, J (James)

#	Games	Start				End
1	2	Tournament 2025 Frances Baard Schools Chess Festival 0.2				Tournament 2025 Frances Baard Schools Chess Festival 0.2
		date 2025-09-20	rnd 1	type Standard	result 1	date 2025-09-20	rnd 2	type Standard	result 1
		Opponent Molaoa, K (Kgotso)				Opponent Mtwana, A (Avuyile)

#	Games	Start				End
1	1	Tournament 2024 Frances Baard Schools Teams				Tournament 2024 Frances Baard Schools Teams
		date 2024-03-02	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 4	type Rapid	result 1
		Opponent Anderson, J (James)				Opponent Anderson, J (James)

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	Mamogale ,B (Botlhale)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Mamogale ,B (Botlhale)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Molaoa ,K (Kgotso)	1	1	425	1	1	425	0	0	0	0	0	0
2	Molaoa ,K (Kgotso)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Molathwe ,M (Mercy)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Molathwe ,M (Mercy)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
4	Mtwana ,A (Avuyile)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mtwana ,A (Avuyile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Evans ,A (Andrew)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Evans ,A (Andrew)	1	1191.9	766.9	1	1160.4	766.9	0	0	0	0	0	0
6	Louw ,J (Jason)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Louw ,J (Jason)	1	1098.3	673.3	1	1091.1	673.3	0	0	0	0	0	0
7	Seeco ,N (Nkosana)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Seeco ,N (Nkosana)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Meyer ,J (Jakoba)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Meyer ,J (Jakoba)	1	1130.1	705.1	1	1118.2	705.1	0	0	0	0	0	0
9	Malemela ,G (Gomolemo)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Malemela ,G (Gomolemo)	1	1335.6	910.6	1	1310.9	910.6	0	0	0	0	0	0
10	Anderson ,J (James)	1	1	425	0	0	0	1	1	425	0	0	0
10	Anderson ,J (James)	1	1181.8	1606.8	0	0	0	1	1200	1606.8	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

De Villiers, Z (Zach)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms