Chess South Africa Ratings Database

PLAYER PAGE

Personal

Pieterse, M (Mia)

Chess SA id

2140142667

FIDE id

Date of birth

2014-09-09 (U12)

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

Junior GPX Points

1156.8

Item	Main	Standard	Rapid	Blitz
Rating	1285.6	1337.3	1221.8	1200
Raw rating	1263	1337.3	1160.7	1200
Weighted rating	1285.6	1286.8	1221.8	1200
Weighted performance	1132.6	1242.4	0	0
Floor	838.5	837.3	735.3	700
K-factor	36	36	36	36
Min/Max rating change allowed	151.6	136.4	175.4	165.8
Highest rating	1372.2 2022-08-01	1362.1 2022-08-01	1377.5 2024-03-01	1200 2018-10-01
Highest raw rating	1338.5 2025-07-01	1337.3 2025-07-01	1235.3 2024-04-01	1200 2024-03-01
Highest weighted rating	1338.5 2025-03-01	1337.3 2025-03-01	1232 2025-08-01	1200 2018-10-01
Highest weighted performance	1372.2 2022-08-01	1362.1 2022-08-01	1377.5 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.6	0	-4.9	0
New rating	1284.1	1337.3	1217	1200
Analysis
Rating	1285.6	1337.3	1221.8	1200
Raw rating	1263	1337.3	1160.7	1200
Weighted rating	1285.6	1286.8	1221.8
Weighted performance	1132.6	1242.4	0
K-factor	36	36	36	36
Floor	838.5	837.3	735.3	700
Max/Min rating change allowed	151.6	136.4	175.4	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	1263	1337.3	1160.7	1200
New weighted rating	1284.1	1291.6	1217	1200
New weighted performance	1132.2	1242	0	0
Temp new rating	1284.1	1337.3	1217	1200
Temp new rating +/-	-1.6	0	-4.9	0
Final new rating +/-	-1.6	0	-4.9	0
New rating	1284.1	1337.3	1217	1200
New K-factor	36	36	36	36
New floor	838.5	837.3	735.3	700

Item	Main	Standard	Rapid
	0	0	0
	31	15	16
	9	4	5
	15	15	0
	15	15	0
	0	0	0
History	70	49	21

Games since
	Main 40	Standard 19		Rapid 21		Blitz 0
Gender	Female
Age group	U12
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3325		1100		178
Female	702		226		42
U12	510		166		26
U12 Female	148		47		6
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1493		255		84
Female	308		53		34
U12	278		37		21
U12 Female	82		13		8
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 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	31	15.5	50	0	1263	1263
Standard	15	9.5	63.33	113.3	1266.4	1379.7
Rapid	16	6	37.5	-106.2	1259.9	1153.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	70	37	52.86	24.3	1233.7	1257.9
Standard	49	27.5	56.12	52	1227.8	1279.8
Rapid	21	9.5	45.24	-40.5	1247.4	1206.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1263	1337.3	1160.7	1200
2025-09-01	1263	1337.3	1160.7	1200
2025-08-01	1338.5	1337.3	1235.3	1200
2025-07-01	1338.5	1337.3	1235.3	1200
2025-06-01	1309.3	1303	1235.3	1200
2025-05-01	1309.3	1303	1235.3	1200
2025-04-01	1274.9	1260	1235.3	1200
2025-03-01	1276.3	1261.9	1235.3	1200
2025-02-01	1275.8	1261.3	1235.3	1200
2025-01-01	1271.7	1252.2	1235.3	1200
2024-12-01	1271.7	1252.2	1235.3	1200
2024-11-01	1271.7	1252.2	1235.3	1200
2024-10-01	1271.7	1252.2	1235.3	1200
2024-09-01	1271.7	1252.2	1235.3	1200
2024-08-01	1271.7	1252.2	1235.3	1200
2024-07-01	1271.7	1252.2	1235.3	1200
2024-06-01	1271.7	1252.2	1235.3	1200
2024-08-01	1271.7	1252.2	1235.3	1200
2024-04-01	1271.7	1252.2	1235.3	1200
2024-03-01	1257.4	1252.2	1200	1200
2024-02-01	1257.4	1252.2	1200	1200
2024-01-01	1301.4	1299	1200	1200
2023-12-01	1301.4	1299	1200	1200
2023-11-01	1301.4	1299	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 (U13 Girls)	2025-08-16	2025-08-16	Rapid	Ekurhuleni (GE)	5	3	3	Yes	Analysis
2	Benoni Clusters Team 2025 (U13 Girls A)	2025-08-09	2025-08-09	Rapid	Ekurhuleni (GE)	6	6	2	Yes	Analysis
3	Benoni Primary School Cluster Teams 2025 (U11A)	2025-08-02	2025-08-02	Rapid	Ekurhuleni (GE)	7	7	1	Yes	Analysis
4	Ekurhuleni North School District Finals 2025 (U11 Girls)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
5	Benoni Primary School Cluster 12 April 2025 (U11 Girls)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
6	Ekurhuleni Chess Open 2025 (D)	2025-03-15	2025-03-15	Standard	Ekurhuleni (GE)	5	5	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 (U13 Girls)	2025-08-16	2025-08-16	Rapid	Ekurhuleni (GE)	5	3	3	Yes	Analysis
2	Benoni Clusters Team 2025 (U13 Girls A)	2025-08-09	2025-08-09	Rapid	Ekurhuleni (GE)	6	6	2	Yes	Analysis
3	Benoni Primary School Cluster Teams 2025 (U11A)	2025-08-02	2025-08-02	Rapid	Ekurhuleni (GE)	7	7	1	Yes	Analysis
4	Ekurhuleni North School District Finals 2025 (U11 Girls)	2025-06-14	2025-06-14	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
5	Benoni Primary School Cluster 12 April 2025 (U11 Girls)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
6	Ekurhuleni Chess Open 2025 (D)	2025-03-15	2025-03-15	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
7	Benoni Primary School Cluster Individuals 2024 (U11 Girls)	2024-03-09	2024-03-09	Rapid	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
8	2024 Gauteng Inter-Region Chess Championship (U8+U10 Girls)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
9	Ekurhuleni North Schools Individual Finals 2023 (U9 Girls)	2023-05-12	2023-05-12	Standard	Ekurhuleni (GE)	5	5	5	Yes	Analysis
10	Ekurhuleni Trials 2 2023 (U10)	2023-04-22	2023-04-22	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
11	Ekhuruleni Chess Trials 1 2023 (U8+U10)	2023-03-25	2023-03-25	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
12	2022 South African Junior Team Chess Championships (U10+U12 Girls)	2022-12-04	2022-12-07	Standard	4 Knights (4K)	5	5	0	Yes	Analysis
13	Ekurhuleni-North Schools Teams 2022 (U9)	2022-08-06	2022-08-06	Standard	Ekurhuleni (GE)	5	5	4	Yes	Analysis
14	Ekurhuleni-North Schools Finals Indiv 2022 (U9 Girls)	2022-05-13	2022-05-13	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	10	Tournament Ekurhuleni Trials 2 2023				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-04-22	rnd 2	type Standard	result 1	date 2024-01-13	rnd 1	type Standard	result 1
		Opponent Robinson, Z (Zachariah)				Opponent Gerber, Z (Zoe)
2	6	Tournament Ekurhuleni Chess Open 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-03-15	rnd 4	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Pretorius, R (Ronan Neo)				Opponent Theron, M (Milea)
3	4	Tournament Ekurhuleni North School District Finals 2025				Tournament Benoni Primary School Cluster Teams 2025
		date 2025-06-14	rnd 3	type Standard	result 1	date 2025-08-02	rnd 1	type Rapid	result 1
		Opponent Masenga, G (Gloria)				Opponent Nortje, L (Luke)

#	Games	Start				End
1	10	Tournament Ekurhuleni Trials 2 2023				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-04-22	rnd 2	type Standard	result 1	date 2024-01-13	rnd 1	type Standard	result 1
		Opponent Robinson, Z (Zachariah)				Opponent Gerber, Z (Zoe)
2	6	Tournament Ekurhuleni Chess Open 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-03-15	rnd 4	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Pretorius, R (Ronan Neo)				Opponent Theron, M (Milea)
3	3	Tournament Ekurhuleni North School District Finals 2025				Tournament Ekurhuleni North School District Finals 2025
		date 2025-06-14	rnd 3	type Standard	result 1	date 2025-06-14	rnd 5	type Standard	result 1
		Opponent Masenga, G (Gloria)				Opponent Negota, R (Rialivhuwa)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Rapid	result 1	date 2025-08-16	rnd 3	type Rapid	result 1
		Opponent Khoza, K (Kanteko)				Opponent Nkwanyana, A (Ayanda)
2	3	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Teams 2025
		date 2024-03-09	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 1	type Rapid	result 1
		Opponent Van Wyk, L (Luzelle)				Opponent Nortje, L (Luke)
3	2	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-03-09	rnd 1	type Rapid	result 1	date 2024-03-09	rnd 2	type Rapid	result 0.5
		Opponent Swanevelder, Z (Zianey)				Opponent Theron, M (Milea)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Ekurhuleni Trials 2 2023				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-04-22	rnd 5	type Standard	result 1	date 2024-01-13	rnd 1	type Standard	result 1
		Opponent Diesel, R (Ruben Daniel)				Opponent Gerber, Z (Zoe)
2	4	Tournament Ekurhuleni North School District Finals 2025				Tournament Benoni Primary School Cluster Teams 2025
		date 2025-06-14	rnd 3	type Standard	result 1	date 2025-08-02	rnd 1	type Rapid	result 1
		Opponent Masenga, G (Gloria)				Opponent Nortje, L (Luke)
3	4	Tournament Ekurhuleni Chess Open 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-03-15	rnd 4	type Standard	result 1	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Pretorius, R (Ronan Neo)				Opponent Suleymanov, L (Leyla)

#	Games	Start				End
1	7	Tournament Ekurhuleni Trials 2 2023				Tournament 2024 Gauteng Inter-Region Chess Championship
		date 2023-04-22	rnd 5	type Standard	result 1	date 2024-01-13	rnd 1	type Standard	result 1
		Opponent Diesel, R (Ruben Daniel)				Opponent Gerber, Z (Zoe)
2	4	Tournament Ekurhuleni Chess Open 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-03-15	rnd 4	type Standard	result 1	date 2025-04-12	rnd 2	type Standard	result 1
		Opponent Pretorius, R (Ronan Neo)				Opponent Suleymanov, L (Leyla)
3	3	Tournament Ekurhuleni North School District Finals 2025				Tournament Ekurhuleni North School District Finals 2025
		date 2025-06-14	rnd 3	type Standard	result 1	date 2025-06-14	rnd 5	type Standard	result 1
		Opponent Masenga, G (Gloria)				Opponent Negota, R (Rialivhuwa)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Teams 2025				Tournament Ekurhuleni North Schools Teams 2025
		date 2025-08-16	rnd 1	type Rapid	result 1	date 2025-08-16	rnd 3	type Rapid	result 1
		Opponent Khoza, K (Kanteko)				Opponent Nkwanyana, A (Ayanda)
2	3	Tournament Benoni Primary School Cluster Individuals 2024				Tournament Benoni Primary School Cluster Teams 2025
		date 2024-03-09	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 1	type Rapid	result 1
		Opponent Van Wyk, L (Luzelle)				Opponent Nortje, L (Luke)
3	1	Tournament Benoni Clusters Team 2025				Tournament Benoni Clusters Team 2025
		date 2025-08-09	rnd 5	type Rapid	result 1	date 2025-08-09	rnd 5	type Rapid	result 1
		Opponent Kleinhans, S (Siela)				Opponent Kleinhans, S (Siela)

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	Kleinhans ,S (Siela)	3	3	425	0	0	0	3	3	425	0	0	0
1	Kleinhans ,S (Siela)	3	1206.3	1631.3	0	0	0	3	1190.5	1631.3	0	0	0
2	Khumalo ,ME (Musawenkosi Ethan)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Khumalo ,ME (Musawenkosi Ethan)	2	1210.2	785.2	2	1212.4	785.2	0	0	0	0	0	0
3	Ngubane ,M (Melokuhle)	2	2	425	2	2	425	0	0	0	0	0	0
3	Ngubane ,M (Melokuhle)	2	1220.1	1645.1	2	1221.8	1645.1	0	0	0	0	0	0
4	Visagie ,A (Arina)	2	0.5	-212.5	1	0.5	0	1	0	-425	0	0	0
4	Visagie ,A (Arina)	2	1492.1	1279.6	1	1468.7	1492.1	1	1437.1	1067.1	0	0	0
5	Mann ,L (Leane)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	Mann ,L (Leane)	2	1412.6	987.6	1	1426.6	987.6	1	1217.3	987.6	0	0	0
6	Theron ,M (Milea)	2	1.5	212.5	1	1	425	1	0.5	0	0	0	0
6	Theron ,M (Milea)	2	1161.1	1373.6	1	1136.1	1586.1	1	1200	1161.1	0	0	0
7	Bouwer ,C (Chloe)	2	0	-425	0	0	0	2	0	-425	0	0	0
7	Bouwer ,C (Chloe)	2	1205.6	780.6	0	0	0	2	1200	780.6	0	0	0
8	Mokgele ,M (Mpilo-Enhle)	2	0	-425	0	0	0	2	0	-425	0	0	0
8	Mokgele ,M (Mpilo-Enhle)	2	1267.3	842.3	0	0	0	2	1215.5	842.3	0	0	0
9	Sanderson ,V (Vikshnee)	1	1	425	1	1	425	0	0	0	0	0	0
9	Sanderson ,V (Vikshnee)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Fivaz ,K (Kaylee)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Fivaz ,K (Kaylee)	1	1199.3	1199.3	1	1199.6	1199.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Pieterse, M (Mia)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms