Chess South Africa Ratings Database

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Personal

Kotze, M (Mirah)

Chess SA id

2160157861

FIDE id

Date of birth

2016-01-04 (U10)

Gender

Female

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

1900-01-01

Junior GPX Games

20.5

Junior GPX Points

1158.3

Item	Main	Standard	Rapid	Blitz
Rating	1234.1	1226.2	1258	1200
Raw rating	1234.1	1226.2	1258	1200
Weighted rating	1215.6	1216.4	1223.9	1200
Weighted performance	1179.3	1116.4	1169.3	0
Floor	753.5	755.4	758	700
K-factor	36	36	36	36
Min/Max rating change allowed	158	159.7	152.7	165.8
Highest rating	1253.5 2025-08-01	1255.4 2025-06-01	1258 2025-08-01	1200 2018-10-01
Highest raw rating	1253.5 2025-08-01	1255.4 2025-06-01	1258 2025-08-01	1200 2024-02-01
Highest weighted rating	1237.4 2018-10-01	1214.6 2025-09-30	1232.3 2018-10-01	1200 2018-10-01
Highest weighted performance	1222.7 2025-08-01	1200 2019-12-01	1231.7 2024-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1234.1	1226.2	1258	1200
Analysis
Rating	1234.1	1226.2	1258	1200
Raw rating	1234.1	1226.2	1258	1200
Weighted rating	1215.6	1216.4	1223.9
Weighted performance	1179.3	1116.4	1169.3
K-factor	36	36	36	36
Floor	753.5	755.4	758	700
Max/Min rating change allowed	158	159.7	152.7	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	1234.1	1226.2	1258	1200
New weighted rating	1218.8	1218	1229.3	1200
New weighted performance	1172.1	1109.3	1161.7	0
Temp new rating	1234.1	1226.2	1258	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1234.1	1226.2	1258	1200
New K-factor	36	36	36	36
New floor	753.5	755.4	758	700

Item	Main	Standard	Rapid
	0	0	0
	25	16	9
	32	10	22
	17	5	12
	0	0	0
	0	0	0
History	74	31	43

Games since
	Main 57	Standard 26		Rapid 31		Blitz 0
Gender	Female
Age group	U10
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3860		1281		132
Female	886		353		42
U10	350		117		13
U10 Female	76		34		6
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	1321		659		157
Female	244		138		43
U10	117		63		12
U10 Female	21		13		4
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U10	-1		-1		-1
U10 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	25	13	52	17	1230.2	1247.2
Standard	16	7.5	46.88	-26.6	1248.7	1222.1
Rapid	9	5.5	61.11	94.4	1197.3	1291.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	74	35.5	47.97	-17.2	1206.6	1189.4
Standard	31	14.5	46.77	-27.4	1235.9	1208.4
Rapid	43	21	48.84	-9.9	1185.6	1175.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1234.1	1226.2	1258	1200
2025-09-30	1234.1	1226.2	1258	1200
2025-09-01	1253.5	1255.4	1258	1200
2025-08-01	1253.5	1255.4	1258	1200
2025-07-01	1237.4	1255.4	1230.9	1200
2025-06-01	1237.4	1255.4	1230.9	1200
2025-05-01	1189.3	1193.3	1230.9	1200
2025-04-01	1189.3	1191.7	1230.9	1200
2025-03-01	1218.2	1197.6	1230.9	1200
2025-02-01	1218.4	1197.6	1232.3	1200
2025-01-01	1218.4	1197.6	1232.3	1200
2024-12-01	1218.4	1197.6	1232.3	1200
2024-11-01	1218.4	1197.6	1232.3	1200
2024-10-01	1218.4	1197.6	1232.3	1200
2024-09-01	1217.5	1199	1232.3	1200
2024-08-01	1161.3	1199	1132.6	1200
2024-07-01	1174.7	1199	1143.8	1200
2024-09-01	1174.7	1199	1143.8	1200
2024-05-01	1154.7	1182.4	1143.8	1200
2024-04-01	1154.7	1182.4	1143.8	1200
2024-03-01	1146.7	1182.4	1128.3	1200
2024-02-01	1110.6	1182.4	1052.7	1200
2024-01-01	1110.6	1182.4	1052.7	1200
2023-12-01	1110.6	1182.4	1052.7	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	Western Cape Schools - Top Schools 2025 (U9 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	2	Yes	Analysis
2	Upper West Coast Top Schools 2025 (U7+U9)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	4	2.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U9 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
4	West Coast Schools Chess Prestige 2025 (U9 Girls)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	5	2	Yes	Analysis
5	Upper West Coast Presrige 2025 (U9 Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Schools - Top Schools 2025 (U9 Girls)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	5	2	Yes	Analysis
2	Upper West Coast Top Schools 2025 (U7+U9)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	4	2.5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U9 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
4	West Coast Schools Chess Prestige 2025 (U9 Girls)	2025-03-08	2025-03-08	Standard	West Coast (WCU)	6	5	2	Yes	Analysis
5	Upper West Coast Presrige 2025 (U9 Girls)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
6	Western Cape Top Schools Championship 2024 (U9 Girls)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	4	2	Yes	Analysis
7	Pedro Booyse Top Schools Championships 2024 (U7+U9)	2024-07-20	2024-07-20	Rapid	West Coast (WCU)	7	7	6	Yes	Analysis
8	Pedro Booyse Annual Rapid 2024 (Development)	2024-07-06	2024-07-06	Rapid	West Coast (WCU)	5	5	2	Yes	Analysis
9	Western Cape PS Individuals Championship 2024 (U9 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
10	West Coast Schools Chess Prestige Championships 2024 (U9 Girls)	2024-03-09	2024-03-09	Rapid	West Coast (WCU)	5	5	2.5	Yes	Analysis
11	Bo-Weskus Skole Prestige 2024 (O9 Dogters)	2024-02-10	2024-02-10	Rapid	West Coast (WCU)	5	5	3.5	Yes	Analysis
12	Western Cape Top Schools 2023 (U7 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
13	Pedro Booyse Top Schools Round 2 2023 (U7+U9)	2023-08-22	2023-08-22	Rapid	West Coast (WCU)	5	4	0.5	Yes	Analysis
14	Pedro Booyse Top Schools 2023 (U7+U9)	2023-07-29	2023-07-29	Rapid	West Coast (WCU)	5	4	0.5	Yes	Analysis
15	Upper West Coast Top Schools Championship 2023 (U7-U11)	2023-06-10	2023-06-10	Rapid	West Coast (WCU)	5	4	0.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament Western Cape Schools Individual Championship 2025				Tournament Upper West Coast Top Schools 2025
		date 2025-05-18	rnd 6	type Standard	result 0.5	date 2025-06-14	rnd 4	type Rapid	result 0.5
		Opponent Hodgson, N (Neva)				Opponent Avontuur, E (Ezrah)
2	4	Tournament Western Cape Top Schools Championship 2024				Tournament Upper West Coast Presrige 2025
		date 2024-09-01	rnd 6	type Standard	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Qumba, I (Imani)				Opponent Van Der Westhuizen, J (Jeneme)
3	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Fortuin, M (Mia)				Opponent Jantjies, A (Amia)

#	Games	Start				End
1	3	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-05-17	rnd 3	type Standard	result 1
		Opponent Greyling, M (Miandri)				Opponent Theron, M (Mia)
2	2	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Fredericks, L (Leahne)				Opponent Kotze, Z (Ziandre)
3	2	Tournament Western Cape Top Schools 2023				Tournament Western Cape Top Schools 2023
		date 2023-09-02	rnd 3	type Standard	result 0.5	date 2023-09-03	rnd 4	type Standard	result 1
		Opponent Swanepoel, M (Mariaan)				Opponent Heasman, J (Jd)

#	Games	Start				End
1	6	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Upper West Coast Presrige 2025
		date 2024-07-20	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Martin, M (Mikaeel)				Opponent Van Der Westhuizen, J (Jeneme)
2	5	Tournament Pedro Booyse Top Schools Round 2 2023				Tournament Bo-Weskus Skole Prestige 2024
		date 2023-08-22	rnd 5	type Rapid	result 0.5	date 2024-02-10	rnd 4	type Rapid	result 1
		Opponent De Kock, C (Charlotte)				Opponent Klaase, N (Nizeche)
3	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Fortuin, M (Mia)				Opponent Jantjies, A (Amia)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Western Cape Top Schools Championship 2024				Tournament Upper West Coast Presrige 2025
		date 2024-09-01	rnd 6	type Standard	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Qumba, I (Imani)				Opponent Van Der Westhuizen, J (Jeneme)
2	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Fortuin, M (Mia)				Opponent Jantjies, A (Amia)
3	3	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-05-17	rnd 3	type Standard	result 1
		Opponent Greyling, M (Miandri)				Opponent Theron, M (Mia)

#	Games	Start				End
1	3	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-17	rnd 1	type Standard	result 1	date 2025-05-17	rnd 3	type Standard	result 1
		Opponent Greyling, M (Miandri)				Opponent Theron, M (Mia)
2	2	Tournament West Coast Schools Chess Prestige 2025				Tournament West Coast Schools Chess Prestige 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 3	type Standard	result 1
		Opponent Fredericks, L (Leahne)				Opponent Kotze, Z (Ziandre)
3	1	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-07	rnd 6	type Standard	result 1	date 2025-09-07	rnd 6	type Standard	result 1
		Opponent Khanya, L (Lesedi)				Opponent Khanya, L (Lesedi)

#	Games	Start				End
1	6	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Upper West Coast Presrige 2025
		date 2024-07-20	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 3	type Rapid	result 1
		Opponent Martin, M (Mikaeel)				Opponent Van Der Westhuizen, J (Jeneme)
2	4	Tournament Pedro Booyse Annual Rapid 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-06	rnd 5	type Rapid	result 1	date 2024-07-20	rnd 3	type Rapid	result 1
		Opponent Fortuin, M (Mia)				Opponent Jantjies, A (Amia)
3	2	Tournament Upper West Coast Top Schools 2025				Tournament Upper West Coast Top Schools 2025
		date 2025-06-14	rnd 1	type Rapid	result 1	date 2025-06-14	rnd 3	type Rapid	result 1
		Opponent Volgraaff, A (Alexander)				Opponent Hahn, L (Liam)

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	Avontuur ,E (Ezrah)	5	1.5	-170	2	1	0	3	0.5	-283.3	0	0	0
1	Avontuur ,E (Ezrah)	5	1275.1	1105.1	2	1233	1275.1	3	1278.8	991.8	0	0	0
2	De Kock ,C (Charlotte)	3	0.5	-283.3	1	0	-425	2	0.5	-212.5	0	0	0
2	De Kock ,C (Charlotte)	3	1143	859.7	1	1200	718	2	1116.7	930.5	0	0	0
3	Fortuin ,M (Mia)	3	1	-141.7	1	0	-425	2	1	0	0	0	0
3	Fortuin ,M (Mia)	3	1023.1	881.4	1	1085.2	598.1	2	1024	1023.1	0	0	0
4	Adonis ,G (Gia)	2	1	0	1	0	-425	1	1	425	0	0	0
4	Adonis ,G (Gia)	2	1051.2	1051.2	1	1118.9	626.2	1	1016.6	1476.2	0	0	0
5	Willemse ,A (Avah)	2	0	-425	1	0	-425	1	0	-425	0	0	0
5	Willemse ,A (Avah)	2	1270.4	845.4	1	1166.8	845.4	1	1317.8	845.4	0	0	0
6	Witbooi ,A (Ava)	2	0	-425	0	0	0	2	0	-425	0	0	0
6	Witbooi ,A (Ava)	2	1173.2	748.2	0	0	0	2	1164.1	748.2	0	0	0
7	Van Der Westhuizen ,J (Jeneme)	2	2	425	0	0	0	2	2	425	0	0	0
7	Van Der Westhuizen ,J (Jeneme)	2	1181.8	1606.8	0	0	0	2	1176.4	1606.8	0	0	0
8	Kapank ,K (Kristen)	2	0.5	-212.5	0	0	0	2	0.5	-212.5	0	0	0
8	Kapank ,K (Kristen)	2	1234.3	1021.8	0	0	0	2	1250.9	1021.8	0	0	0
9	Fredericks ,B (Bethany)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Fredericks ,B (Bethany)	1	1266.2	841.2	1	1263.6	841.2	0	0	0	0	0	0
10	Smith ,S (Sophia)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Smith ,S (Sophia)	1	1287.6	862.6	1	1226.1	862.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Kotze, M (Mirah)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms