Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pieterse, Z (Zandri)

Chess SA id

2110152999

FIDE id

Date of birth

2011-03-01 (U16)

Gender

Female

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

11.2

Junior GPX Points

1159.7

Item	Main	Standard	Rapid	Blitz
Rating	1179.5	1200.7	1191.7	1200
Raw rating	1179.5	1200.7	1156.4	1200
Weighted rating	1166.1	1166.5	1191.7	1200
Weighted performance	1066.1	1040.2	0	0
Floor	708.7	710.4	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	170.7	165.7	176.4	165.8
Highest rating	1239.4 2023-05-01	1237.5 2023-05-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1208.7 2023-06-01	1210.4 2023-06-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1208.7 2024-01-01	1210.4 2024-01-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1239.4 2023-05-01	1237.5 2023-05-01	1200 2019-12-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	-3.1	0
New rating	1179.5	1200.7	1188.6	1200
Analysis
Rating	1179.5	1200.7	1191.7	1200
Raw rating	1179.5	1200.7	1156.4	1200
Weighted rating	1166.1	1166.5	1191.7
Weighted performance	1066.1	1040.2	0
K-factor	36	36	36	36
Floor	708.7	710.4	700	700
Max/Min rating change allowed	170.7	165.7	176.4	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	1179.5	1200.7	1156.4	1200
New weighted rating	1167.3	1169.5	1188.6	1200
New weighted performance	1065.7	1039.8	0	0
Temp new rating	1179.5	1200.7	1188.6	1200
Temp new rating +/-	0	0	-3.1	0
Final new rating +/-	0	0	-3.1	0
New rating	1179.5	1200.7	1188.6	1200
New K-factor	36	36	36	36
New floor	708.7	710.4	700	700

Item	Main	Standard	Rapid
	0	0	0
	14	9	5
	9	4	5
	14	14	0
	0	0	0
	0	0	0
History	37	27	10

Games since
	Main 23	Standard 13		Rapid 10		Blitz 0
Gender	Female
Age group	U16
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U16	-1		-1		-1
U16 Female	-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	14	6.5	46.43	-30.4	1236.9	1206.5
Standard	9	5	55.56	47.2	1253.9	1301.1
Rapid	5	1.5	30	-170	1206.2	1036.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	37	16	43.24	-57.4	1214.2	1156.8
Standard	27	12	44.44	-47.2	1223.5	1176.3
Rapid	10	4	40	-85	1189	1104
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1179.5	1200.7	1156.4	1200
2025-09-01	1179.5	1200.7	1156.4	1200
2025-08-01	1182.6	1180	1198.3	1200
2025-07-01	1182.6	1180	1198.3	1200
2025-06-01	1182.6	1180	1198.3	1200
2025-05-01	1182.2	1180	1198.5	1200
2025-04-01	1182.2	1180	1198.5	1200
2025-03-01	1182.2	1180	1198.5	1200
2025-02-01	1157	1153.7	1198.5	1200
2025-01-01	1143	1138	1197.8	1200
2024-12-01	1143	1138	1197.8	1200
2024-11-01	1143	1138	1197.8	1200
2024-10-01	1143	1138	1197.8	1200
2024-09-01	1143	1138	1197.8	1200
2024-08-01	1143	1138	1197.8	1200
2024-07-01	1143	1138	1197.8	1200
2024-06-01	1143	1138	1197.8	1200
2024-08-01	1143	1138	1197.8	1200
2024-04-01	1143	1138	1197.8	1200
2024-03-01	1140	1138	1200	1200
2024-02-01	1140	1138	1200	1200
2024-01-01	1208.7	1210.4	1200	1200
2023-12-01	1208.7	1210.4	1200	1200
2023-11-01	1208.7	1210.4	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	Ekurhuleni North Schools Teams 2025 (U19 Girls)	2025-08-15	2025-08-15	Rapid	Ekurhuleni (GE)	5	3	0.5	Yes	Analysis
2	Ekurhuleni North Schools Teams 2025 (U15 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
3	Benoni High School Cluster 2025 (U18 Girls)	2025-05-09	2025-05-09	Rapid	Ekurhuleni (GE)	5	2	1	Yes	Analysis
4	Benoni High School Cluster 15Feb 2025 (U15 Girls)	2025-02-15	2025-02-15	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Ekurhuleni North Schools Teams 2025 (U19 Girls)	2025-08-15	2025-08-15	Rapid	Ekurhuleni (GE)	5	3	0.5	Yes	Analysis
2	Ekurhuleni North Schools Teams 2025 (U15 Open)	2025-08-16	2025-08-16	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
3	Benoni High School Cluster 2025 (U18 Girls)	2025-05-09	2025-05-09	Rapid	Ekurhuleni (GE)	5	2	1	Yes	Analysis
4	Benoni High School Cluster 15Feb 2025 (U15 Girls)	2025-02-15	2025-02-15	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis
5	Benoni Primary School Cluster Individuals 2024 (U13 Girls)	2024-03-09	2024-03-09	Rapid	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
6	2024 Gauteng Inter-Region Chess Championship (U14C)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
7	Ekurhuleni North Schools Individual Finals 2023 (U13 Girls)	2023-05-12	2023-05-12	Standard	Ekurhuleni (GE)	5	4	2	Yes	Analysis
8	Ekurhuleni Trials 2 2023 (U14)	2023-04-22	2023-04-22	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
9	Ekhuruleni Chess Trials 1 2023 (U14)	2023-03-25	2023-03-25	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 2	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Pretorius, T (Theunica)				Opponent Mchunu, L (Lwandile)
2	3	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 4	type Rapid	result 1
		Opponent Dyson, B (Brenda)				Opponent Lourens, A (Ashley)
3	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-12	rnd 3	type Standard	result 1	date 2023-05-12	rnd 4	type Standard	result 1
		Opponent Letsolo, K (Kutlwano Masody Annah)				Opponent Maphuthoma, T (Tshegofatso)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 2	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Pretorius, T (Theunica)				Opponent Mchunu, L (Lwandile)
2	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-12	rnd 3	type Standard	result 1	date 2023-05-12	rnd 4	type Standard	result 1
		Opponent Letsolo, K (Kutlwano Masody Annah)				Opponent Maphuthoma, T (Tshegofatso)
3	2	Tournament Ekurhuleni Trials 2 2023				Tournament Ekurhuleni Trials 2 2023
		date 2023-04-22	rnd 2	type Standard	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Gwaza, U (Unathi)				Opponent Buthelezi, O (Owethu)

#	Games	Start				End
1	3	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 4	type Rapid	result 1
		Opponent Dyson, B (Brenda)				Opponent Lourens, A (Ashley)
2	1	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-15	rnd 4	type Rapid	result 0.5	date 2025-08-15	rnd 4	type Rapid	result 0.5
		Opponent Rwodzi, M (Makanaka)				Opponent Rwodzi, M (Makanaka)
3	1	Tournament Benoni High School Cluster 2025				Tournament Benoni High School Cluster 2025
		date 2025-05-09	rnd 5	type Rapid	result 1	date 2025-05-09	rnd 5	type Rapid	result 1
		Opponent Ferreira, L (Lara)				Opponent Ferreira, L (Lara)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 2	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Pretorius, T (Theunica)				Opponent Mchunu, L (Lwandile)
2	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-12	rnd 3	type Standard	result 1	date 2023-05-12	rnd 4	type Standard	result 1
		Opponent Letsolo, K (Kutlwano Masody Annah)				Opponent Maphuthoma, T (Tshegofatso)
3	2	Tournament Ekurhuleni Trials 2 2023				Tournament Ekurhuleni Trials 2 2023
		date 2023-04-22	rnd 2	type Standard	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Gwaza, U (Unathi)				Opponent Buthelezi, O (Owethu)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 2	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Pretorius, T (Theunica)				Opponent Mchunu, L (Lwandile)
2	2	Tournament Ekurhuleni North Schools Individual Finals 2023				Tournament Ekurhuleni North Schools Individual Finals 2023
		date 2023-05-12	rnd 3	type Standard	result 1	date 2023-05-12	rnd 4	type Standard	result 1
		Opponent Letsolo, K (Kutlwano Masody Annah)				Opponent Maphuthoma, T (Tshegofatso)
3	2	Tournament Ekurhuleni Trials 2 2023				Tournament Ekurhuleni Trials 2 2023
		date 2023-04-22	rnd 2	type Standard	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Gwaza, U (Unathi)				Opponent Buthelezi, O (Owethu)

#	Games	Start				End
1	1	Tournament Benoni High School Cluster 2025				Tournament Benoni High School Cluster 2025
		date 2025-05-09	rnd 5	type Rapid	result 1	date 2025-05-09	rnd 5	type Rapid	result 1
		Opponent Ferreira, L (Lara)				Opponent Ferreira, L (Lara)
2	1	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 4	type Rapid	result 1	date 2024-03-09	rnd 4	type Rapid	result 1
		Opponent Lourens, A (Ashley)				Opponent Lourens, A (Ashley)
3	1	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 2	type Rapid	result 1	date 2024-03-09	rnd 2	type Rapid	result 1
		Opponent Dyson, B (Brenda)				Opponent Dyson, B (Brenda)

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	Myburgh ,M (Melinda)	2	0	-425	1	0	-425	1	0	-425	0	0	0
1	Myburgh ,M (Melinda)	2	1152.8	727.8	1	1125.2	727.8	1	1182	727.8	0	0	0
2	Ferreira ,L (Lara)	2	1	0	0	0	0	2	1	0	0	0	0
2	Ferreira ,L (Lara)	2	1198.4	1198.4	0	0	0	2	1203.8	1198.4	0	0	0
3	Vermaak ,L (Louis Jacobus)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Vermaak ,L (Louis Jacobus)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Masogo ,M (Mogau Raesibe)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Masogo ,M (Mogau Raesibe)	1	1200	775	1	1200	775	0	0	0	0	0	0
5	Hattingh ,K (Kale)	1	1	425	1	1	425	0	0	0	0	0	0
5	Hattingh ,K (Kale)	1	1120.8	1545.8	1	1107.6	1545.8	0	0	0	0	0	0
6	Maseko ,N (Nkosingiphile)	1	1	425	1	1	425	0	0	0	0	0	0
6	Maseko ,N (Nkosingiphile)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Segeel ,K (Kian)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Segeel ,K (Kian)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Ambrose ,I (Isabella)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Ambrose ,I (Isabella)	1	1542.8	1117.8	1	1541.5	1117.8	0	0	0	0	0	0
9	Booysen ,Z (Zian)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Booysen ,Z (Zian)	1	1191.8	766.8	1	1222.4	766.8	0	0	0	0	0	0
10	Motaung ,B (Boitumelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Motaung ,B (Boitumelo)	1	1200	775	1	1200	775	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

Pieterse, Z (Zandri)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms