Chess South Africa Ratings Database

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Personal

Crabbia, M (Mattia)

Chess SA id

1120150128

FIDE id

Date of birth

2012-04-26 (U14)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-11

Personal details last changed

1900-01-01

Junior GPX Games

12.7

Junior GPX Points

1114.2

Item	Main	Standard	Rapid	Blitz
Rating	1265.9	1226.9	1248.7	1200
Raw rating	1265.9	1226.9	1248.7	1200
Weighted rating	1230.2	1208.6	1234.4	1200
Weighted performance	1233.4	0	1246.8	0
Floor	765.9	726.9	752.3	700
K-factor	36	36	36	36
Min/Max rating change allowed	151	159.6	154.7	165.8
Highest rating	1265.9 2025-11-01	1226.9 2025-09-30	1405.4 2024-09-01	1200 2018-10-01
Highest raw rating	1265.9 2025-11-01	1226.9 2025-09-30	1252.3 2025-09-30	1200 2024-03-01
Highest weighted rating	1230.2 2025-11-01	1206.9 2025-09-30	1234.4 2025-11-01	1200 2018-10-01
Highest weighted performance	1236.8 2023-03-01	1213.4 2023-03-01	1405.4 2024-09-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1265.9	1226.9	1248.7	1200
Analysis
Rating	1265.9	1226.9	1248.7	1200
Raw rating	1265.9	1226.9	1248.7	1200
Weighted rating	1230.2	1208.6	1234.4
Weighted performance	1233.4	0	1246.8
K-factor	36	36	36	36
Floor	765.9	726.9	752.3	700
Max/Min rating change allowed	151	159.6	154.7	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	1265.9	1226.9	1248.7	1200
New weighted rating	1233.5	1210.2	1236.3	1200
New weighted performance	1226	0	1239.4	0
Temp new rating	1265.9	1226.9	1248.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1265.9	1226.9	1248.7	1200
New K-factor	36	36	36	36
New floor	765.9	726.9	752.3	700

Item	Main	Standard	Rapid
	0	0	0
	25	5	20
	5	0	5
	11	11	0
	0	0	0
	0	0	0
History	41	16	25

Games since
	Main 30	Standard 5		Rapid 25		Blitz 0
Gender	Male
Age group	U14
Region	Cape Town (WCT)
Province	Western Cape (WC)
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	1383		688		276
Male	1093		530		236
U14	304		158		59
U14 Male	215		112		46
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	25	11.5	46	-34	1333.6	1299.6
Standard	5	2.5	50	0	1287.5	1287.5
Rapid	20	9	45	-42.5	1345.1	1302.6
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	41	20	48.78	-10.4	1304.8	1294.5
Standard	16	8	50	0	1249.7	1249.7
Rapid	25	12	48	-17	1340.1	1323.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1265.9	1226.9	1248.7	1200
2025-09-30	1256.5	1226.9	1252.3	1200
2025-09-01	1217.3	1209.6	1215.2	1200
2025-08-01	1229	1204.8	1243.2	1200
2025-07-01	1229	1204.8	1243.2	1200
2025-06-01	1229	1204.8	1243.2	1200
2025-05-01	1229	1204.8	1243.2	1200
2025-04-01	1229	1204.8	1243.2	1200
2025-03-01	1229	1204.8	1243.2	1200
2025-02-01	1229	1204.8	1243.2	1200
2025-01-01	1229	1204.8	1243.2	1200
2024-12-01	1229	1204.8	1243.2	1200
2024-11-01	1229	1204.8	1243.2	1200
2024-10-01	1229	1204.8	1243.2	1200
2024-09-01	1212.6	1204.8	1200	1200
2024-08-01	1212.6	1204.8	1200	1200
2024-07-01	1212.6	1204.8	1200	1200
2024-09-01	1212.6	1204.8	1200	1200
2024-05-01	1212.6	1204.8	1200	1200
2024-04-01	1212.6	1204.8	1200	1200
2024-03-01	1212.6	1204.8	1200	1200
2024-02-01	1212.6	1204.8	1200	1200
2024-01-01	1212.6	1204.8	1200	1200
2023-12-01	1212.6	1204.8	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	Closed Somerset College Chess Tournament 2025 (U13)	2025-09-12	2025-09-12	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
2	UCT Open Chess Championship 2025 (U14)	2025-10-11	2025-10-11	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
3	Rhenish Primary 2025 (U14+Over)	2025-09-20	2025-09-20	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
4	Western Cape Schools - Top Schools 2025 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	2	1	Yes	Analysis
5	Curro Chess Open Rapid 2025 (U14)	2025-08-23	2025-08-23	Rapid	Cape Town (WCT)	6	5	1.5	Yes	Analysis
6	CT Metro District East Top Schools Chess 2025 (U13)	2025-08-02	2025-08-03	Standard	Cape Town (WCT)	7	3	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Closed Somerset College Chess Tournament 2025 (U13)	2025-09-12	2025-09-12	Rapid	Cape Town (WCT)	5	5	2	Yes	Analysis
2	UCT Open Chess Championship 2025 (U14)	2025-10-11	2025-10-11	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
3	Rhenish Primary 2025 (U14+Over)	2025-09-20	2025-09-20	Rapid	Cape Winelands (WCW)	5	5	3.5	Yes	Analysis
4	Western Cape Schools - Top Schools 2025 (U13)	2025-09-06	2025-09-07	Standard	Overberg (WOS)	6	2	1	Yes	Analysis
5	Curro Chess Open Rapid 2025 (U14)	2025-08-23	2025-08-23	Rapid	Cape Town (WCT)	6	5	1.5	Yes	Analysis
6	CT Metro District East Top Schools Chess 2025 (U13)	2025-08-02	2025-08-03	Standard	Cape Town (WCT)	7	3	1.5	Yes	Analysis
7	Closed Somerset College Chess Tournament 2024 (U13)	2024-09-13	2024-09-13	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
8	Cape Town Metro Schools Chess Closed Individuals 2023 (U11 Boys)	2023-03-03	2023-03-04	Standard	Cape Town (WCT)	6	6	3	Yes	Analysis
9	District East Schools Chess Individual Trials 2023 (U11 Boys)	2023-02-03	2023-02-04	Standard	Cape Town (WCT)	6	5	2.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Closed Somerset College Chess Tournament 2024				Tournament CT Metro District East Top Schools Chess 2025
		date 2024-09-13	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Myrmingos, G (Georgina)				Opponent Gevenga, I (Inonge)
2	2	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 5	type Rapid	result 0.5
		Opponent Tshixo, A (Aka)				Opponent Bergstedt, G (Grayson)
3	2	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 1	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Blauw, E (Eugene)				Opponent Coetzee, J (Jowayne)

#	Games	Start				End
1	2	Tournament CT Metro District East Top Schools Chess 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-08-03	rnd 5	type Standard	result 0.5	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Mertz, K (Kian)				Opponent Jansen Van Rensburg, X (Xandre)
2	2	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament CT Metro District East Top Schools Chess 2025
		date 2023-03-04	rnd 6	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Waldeck, A (Aaron)				Opponent Gevenga, I (Inonge)
3	2	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-03-04	rnd 3	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Du Preez, Z (Zolani)				Opponent Anderson, J (Jean)

#	Games	Start				End
1	3	Tournament Closed Somerset College Chess Tournament 2024				Tournament Curro Chess Open Rapid 2025
		date 2024-09-13	rnd 4	type Rapid	result 1	date 2025-08-23	rnd 2	type Rapid	result 0.5
		Opponent Myrmingos, G (Georgina)				Opponent Troskie, G (Gerhard)
2	2	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 5	type Rapid	result 0.5
		Opponent Tshixo, A (Aka)				Opponent Bergstedt, G (Grayson)
3	2	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 1	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Blauw, E (Eugene)				Opponent Coetzee, J (Jowayne)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Closed Somerset College Chess Tournament 2024				Tournament CT Metro District East Top Schools Chess 2025
		date 2024-09-13	rnd 4	type Rapid	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Myrmingos, G (Georgina)				Opponent Gevenga, I (Inonge)
2	2	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 1	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Blauw, E (Eugene)				Opponent Coetzee, J (Jowayne)
3	2	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-03-04	rnd 3	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Du Preez, Z (Zolani)				Opponent Anderson, J (Jean)

#	Games	Start				End
1	2	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament CT Metro District East Top Schools Chess 2025
		date 2023-03-04	rnd 6	type Standard	result 1	date 2025-08-02	rnd 1	type Standard	result 1
		Opponent Waldeck, A (Aaron)				Opponent Gevenga, I (Inonge)
2	2	Tournament Cape Town Metro Schools Chess Closed Individuals 2023				Tournament Cape Town Metro Schools Chess Closed Individuals 2023
		date 2023-03-04	rnd 3	type Standard	result 1	date 2023-03-04	rnd 4	type Standard	result 1
		Opponent Du Preez, Z (Zolani)				Opponent Anderson, J (Jean)
3	1	Tournament Western Cape Schools - Top Schools 2025				Tournament Western Cape Schools - Top Schools 2025
		date 2025-09-06	rnd 1	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Jansen Van Rensburg, X (Xandre)				Opponent Jansen Van Rensburg, X (Xandre)

#	Games	Start				End
1	2	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 1	type Rapid	result 1	date 2025-09-20	rnd 2	type Rapid	result 1
		Opponent Blauw, E (Eugene)				Opponent Coetzee, J (Jowayne)
2	2	Tournament Closed Somerset College Chess Tournament 2024				Tournament Closed Somerset College Chess Tournament 2024
		date 2024-09-13	rnd 4	type Rapid	result 1	date 2024-09-13	rnd 5	type Rapid	result 1
		Opponent Myrmingos, G (Georgina)				Opponent Nieuwoudt, Z (Zoe)
3	1	Tournament Rhenish Primary 2025				Tournament Rhenish Primary 2025
		date 2025-09-20	rnd 4	type Rapid	result 1	date 2025-09-20	rnd 4	type Rapid	result 1
		Opponent Tshixo, A (Aka)				Opponent Tshixo, A (Aka)

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	Cass ,T (Troy)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Cass ,T (Troy)	2	1242.8	817.8	2	1223.6	817.8	0	0	0	0	0	0
2	Waldeck ,A (Aaron)	2	1	0	1	1	425	1	0	-425	0	0	0
2	Waldeck ,A (Aaron)	2	1287.8	1287.8	1	1240	1712.8	1	1395.1	862.8	0	0	0
3	Lee ,K (Ken-Win)	2	2	425	0	0	0	2	2	425	0	0	0
3	Lee ,K (Ken-Win)	2	1446.8	1871.8	0	0	0	2	1300.6	1871.8	0	0	0
4	Nieuwoudt ,Z (Zoe)	2	2	425	0	0	0	2	2	425	0	0	0
4	Nieuwoudt ,Z (Zoe)	2	1160.3	1585.3	0	0	0	2	1192.6	1585.3	0	0	0
5	Timm ,M (Matthew)	2	1	0	0	0	0	2	1	0	0	0	0
5	Timm ,M (Matthew)	2	1217.8	1217.8	0	0	0	2	1224.9	1217.8	0	0	0
6	Liu ,A (Amy)	2	0	-425	0	0	0	2	0	-425	0	0	0
6	Liu ,A (Amy)	2	1629.6	1204.6	0	0	0	2	1394.3	1204.6	0	0	0
7	Van Wyk ,D (Dimitri)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Van Wyk ,D (Dimitri)	1	1322.8	897.8	1	1278.4	897.8	0	0	0	0	0	0
8	Niemann ,J (Jandre)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Niemann ,J (Jandre)	1	1186.8	761.8	1	1200	761.8	0	0	0	0	0	0
9	Anderson ,J (Jean)	1	1	425	1	1	425	0	0	0	0	0	0
9	Anderson ,J (Jean)	1	1307.9	1732.9	1	1249.8	1732.9	0	0	0	0	0	0
10	Katazwa ,M (Milani)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Katazwa ,M (Milani)	1	1231.8	806.8	1	1263.7	806.8	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

Crabbia, M (Mattia)

Ratings

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Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms