Chess South Africa Ratings Database

PLAYER PAGE

Personal

Lotter, S (Sofia)

Chess SA id

2140300064

FIDE id

Date of birth

2014-06-06 (U12)

Gender

Female

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1112.3

Item	Main	Standard	Rapid	Blitz
Rating	1188.2	1174.2	1198.2	1200
Raw rating	1174.9	1151.3	1198.2	1200
Weighted rating	1188.2	1174.2	1197.9	1200
Weighted performance	1154.2	1106.4	0	0
Floor	723	705.7	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	171.8	177.7	166.3	165.8
Highest rating	1223 2025-04-01	1205.7 2025-04-01	1200 2024-03-01	1200 2024-04-01
Highest raw rating	1223 2025-04-01	1205.7 2025-04-01	1200 2024-03-01	1200 2024-04-01
Highest weighted rating	1223 2024-03-01	1205.7 2024-03-01	1200 2024-03-01	1200 2024-04-01
Highest weighted performance	1210.4 2025-04-01	1200 2024-12-01	1200 2024-12-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.9	-1.9	0	0
New rating	1187.3	1172.3	1198.2	1200
Analysis
Rating	1188.2	1174.2	1198.2	1200
Raw rating	1174.9	1151.3	1198.2	1200
Weighted rating	1188.2	1174.2	1197.9
Weighted performance	1154.2	1106.4	0
K-factor	36	36	36	36
Floor	723	705.7	700	700
Max/Min rating change allowed	171.8	177.7	166.3	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	1174.9	1151.3	1198.2	1200
New weighted rating	1187.3	1172.3	1197.9	1200
New weighted performance	1153.8	1105.9	0	0
Temp new rating	1187.3	1172.3	1198.2	1200
Temp new rating +/-	-0.9	-1.9	0	0
Final new rating +/-	-0.9	-1.9	0	0
New rating	1187.3	1172.3	1198.2	1200
New K-factor	36	36	36	36
New floor	723	705.7	700	700

Item	Main	Standard	Rapid
	0	0	0
	26	14	12
	20	15	5
	0	0	0
	0	0	0
	0	0	0
History	46	29	17

Games since
	Main 46	Standard 29		Rapid 17		Blitz 0
Gender	Female
Age group	U12
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	4096		1366		132
Female	1001		409		51
U12	692		248		28
U12 Female	218		90		13
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	-1		-1		-1
Female	-1		-1		-1
U12	-1		-1		-1
U12 Female	-1		-1		-1
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	26	11.5	44.23	-49	1255.7	1206.7
Standard	14	5.5	39.29	-91.1	1276.4	1185.4
Rapid	12	6	50	0	1231.5	1231.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	46	20	43.48	-55.4	1234.4	1179
Standard	29	11.5	39.66	-87.9	1246.2	1158.3
Rapid	17	8.5	50	0	1214.3	1214.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1174.9	1151.3	1198.2	1200
2025-09-01	1174.9	1151.3	1198.2	1200
2025-08-01	1215.7	1201.1	1198.2	1200
2025-07-01	1215.7	1201.1	1198.2	1200
2025-06-01	1215.7	1201.1	1198.2	1200
2025-05-01	1223	1205.7	1198.2	1200
2025-04-01	1223	1205.7	1198.2	1200
2025-03-01	1192.7	1169.1	1198.2	1200
2025-02-01	1175.7	1169	1198	1200
2025-01-01	1167.2	1157.2	1197.2	1200
2024-12-01	1167.2	1157.2	1197.2	1200
2024-11-01	1167.2	1157.2	1197.2	1200
2024-10-01	1167.2	1157.2	1197.2	1200
2024-09-01	1167.2	1157.2	1197.2	1200
2024-08-01	1167.2	1157.2	1197.2	1200
2024-07-01	1145	1133.6	1197.2	1200
2024-06-01	1145	1133.6	1197.2	1200
2024-08-01	1177.5	1172	1197.2	1200
2024-04-01	1177.5	1172	1197.2	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	Overberg Top Schools 2025 (U11)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	3	3	0	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U11 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
3	Overberg Schools - PS Closed 2025 (U11 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
4	Overberg Schools - PS Trials (Region 1) 2025 (U11 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
5	Overberg Schools & Federation Open 2025 (U11)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Overberg Top Schools 2025 (U11)	2025-08-02	2025-08-02	Standard	Overberg (WOS)	3	3	0	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U11 Girls)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
3	Overberg Schools - PS Closed 2025 (U11 Girls)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
4	Overberg Schools - PS Trials (Region 1) 2025 (U11 Girls)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
5	Overberg Schools & Federation Open 2025 (U11)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
6	Overberg Schools - Top Schools 2024 (U11 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	4	2.5	Yes	Analysis
7	Western Cape PS Individuals Championship 2024 (U11 Girls)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	1.5	Yes	Analysis
8	Overberg Schools - PS Closed 2024 (U11 Girls)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
9	Overberg Schools - PS Trials Region 3 2024 (U11 Girls)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-17	rnd 4	type Standard	result 0.5	date 2025-05-18	rnd 6	type Standard	result 1
		Opponent Joubert, D (Danielle)				Opponent Harikisun, A (Acira)
2	3	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Rossouw, A (Avore-Lee)				Opponent Ngalo, E (Entle)
3	3	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-03-02	rnd 4	type Rapid	result 1	date 2024-03-16	rnd 1	type Standard	result 1
		Opponent Foye, R (Rhossanah)				Opponent Van Geems, A (Anrisca)

#	Games	Start				End
1	3	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-17	rnd 4	type Standard	result 0.5	date 2025-05-18	rnd 6	type Standard	result 1
		Opponent Joubert, D (Danielle)				Opponent Harikisun, A (Acira)
2	3	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Rossouw, A (Avore-Lee)				Opponent Ngalo, E (Entle)
3	2	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-07-27	rnd 5	type Standard	result 1
		Opponent Muller, A (Andreas)				Opponent Van Heerden, J (Johanathan)

#	Games	Start				End
1	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 2	type Rapid	result 1	date 2025-02-01	rnd 3	type Rapid	result 1
		Opponent Mutamba, E (Elizabeth)				Opponent Indhull, N (Nikita)
2	2	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-03-02	rnd 4	type Rapid	result 1	date 2024-03-02	rnd 5	type Rapid	result 0.5
		Opponent Foye, R (Rhossanah)				Opponent November, K (Kihara)
3	1	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Gela, N (Nosiya)				Opponent Gela, N (Nosiya)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Rossouw, A (Avore-Lee)				Opponent Ngalo, E (Entle)
2	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-18	rnd 5	type Standard	result 1	date 2025-05-18	rnd 6	type Standard	result 1
		Opponent Du Toit, C (Christina)				Opponent Harikisun, A (Acira)
3	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 2	type Rapid	result 1	date 2025-02-01	rnd 3	type Rapid	result 1
		Opponent Mutamba, E (Elizabeth)				Opponent Indhull, N (Nikita)

#	Games	Start				End
1	3	Tournament Overberg Schools - PS Closed 2025				Tournament Overberg Schools - PS Closed 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 4	type Standard	result 1
		Opponent Rossouw, A (Avore-Lee)				Opponent Ngalo, E (Entle)
2	2	Tournament Western Cape Schools Individual Championship 2025				Tournament Western Cape Schools Individual Championship 2025
		date 2025-05-18	rnd 5	type Standard	result 1	date 2025-05-18	rnd 6	type Standard	result 1
		Opponent Du Toit, C (Christina)				Opponent Harikisun, A (Acira)
3	2	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-07-27	rnd 4	type Standard	result 1	date 2024-07-27	rnd 5	type Standard	result 1
		Opponent Muller, A (Andreas)				Opponent Van Heerden, J (Johanathan)

#	Games	Start				End
1	2	Tournament Overberg Schools & Federation Open 2025				Tournament Overberg Schools & Federation Open 2025
		date 2025-02-01	rnd 2	type Rapid	result 1	date 2025-02-01	rnd 3	type Rapid	result 1
		Opponent Mutamba, E (Elizabeth)				Opponent Indhull, N (Nikita)
2	1	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Gela, N (Nosiya)				Opponent Gela, N (Nosiya)
3	1	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 4	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Frans, S (Shandre)				Opponent Frans, S (Shandre)

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	Van Zyl ,H (Hannah)	3	1	-141.7	2	1	0	1	0	-425	0	0	0
1	Van Zyl ,H (Hannah)	3	1165.9	1024.2	2	1139.4	1165.9	1	1215.6	740.9	0	0	0
2	Du Preez ,A (Anneke)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Du Preez ,A (Anneke)	2	1385.6	960.6	2	1344.4	960.6	0	0	0	0	0	0
3	Matinywa ,S (Sesona)	2	0.5	-212.5	1	0.5	0	1	0	-425	0	0	0
3	Matinywa ,S (Sesona)	2	1183.8	971.3	1	1166	1183.8	1	1190.9	758.8	0	0	0
4	Ngalo ,E (Entle)	2	1	0	1	1	425	1	0	-425	0	0	0
4	Ngalo ,E (Entle)	2	1247.1	1247.1	1	1246	1672.1	1	1086.3	822.1	0	0	0
5	Pretorius ,S (Sylvie)	2	0	-425	0	0	0	2	0	-425	0	0	0
5	Pretorius ,S (Sylvie)	2	1301.7	876.7	0	0	0	2	1267	876.7	0	0	0
6	Moses ,L (Limpho)	1	1	425	1	1	425	0	0	0	0	0	0
6	Moses ,L (Limpho)	1	1222.5	1647.5	1	1200	1647.5	0	0	0	0	0	0
7	Sander ,H (Hannah)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Sander ,H (Hannah)	1	1250.7	825.7	1	1215.5	825.7	0	0	0	0	0	0
8	Muller ,A (Andreas)	1	1	425	1	1	425	0	0	0	0	0	0
8	Muller ,A (Andreas)	1	1241.8	1666.8	1	1176.4	1666.8	0	0	0	0	0	0
9	Cetywayo ,S (Siyahluma)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Cetywayo ,S (Siyahluma)	1	1340.7	915.7	1	1344.6	915.7	0	0	0	0	0	0
10	Van Zyl ,E (Ethan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Van Zyl ,E (Ethan)	1	1273.1	848.1	1	1217	848.1	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

Lotter, S (Sofia)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms