Chess South Africa Ratings Database

PLAYER PAGE

Personal

Petro, Y (Yulin)

Chess SA id

206078547

FIDE id

Date of birth

2006-01-01 (U20)

Gender

Female

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2021-03-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1147.6	1075.6	1136.4	1200
Raw rating	1147.6	1075.6	1136.4	1200
Weighted rating	1147.6	1075.6	1136.4	1200
Weighted performance	386.6	220.8	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	178.7	198	181.5	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2018-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1147.6	1075.6	1136.4	1200
Analysis
Rating	1147.6	1075.6	1136.4	1200
Raw rating	1147.6	1075.6	1136.4	1200
Weighted rating	1147.6	1075.6	1136.4
Weighted performance	386.6	220.8	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	178.7	198	181.5	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	1147.6	1075.6	1136.4	1200
New weighted rating	1147.6	1075.6	1136.4	1200
New weighted performance	386.2	220.5	0	0
Temp new rating	1147.6	1075.6	1136.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1147.6	1075.6	1136.4	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	7	0	7
History	52	29	23

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	U20
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
U20	-1		-1		-1
U20 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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	47	23	48.94	-9	1090.3	1081.3
Standard	29	13.5	46.55	-29.3	1020.9	991.6
Rapid	18	9.5	52.78	23.6	1202.2	1225.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1147.6	1075.6	1136.4	1200
2025-09-01	1147.6	1075.6	1136.4	1200
2025-08-01	1147.6	1075.6	1136.4	1200
2025-07-01	1147.6	1075.6	1136.4	1200
2025-06-01	1147.6	1075.6	1136.4	1200
2025-05-01	1147.6	1075.6	1136.4	1200
2025-04-01	1147.6	1075.6	1136.4	1200
2025-03-01	1147.6	1075.6	1136.4	1200
2025-02-01	1147.6	1075.6	1136.4	1200
2025-01-01	1147.6	1075.6	1136.4	1200
2024-12-01	1147.6	1075.6	1136.4	1200
2024-11-01	1147.6	1075.6	1136.4	1200
2024-10-01	1147.6	1075.6	1136.4	1200
2024-09-01	1147.6	1075.6	1136.4	1200
2024-08-01	1147.6	1075.6	1136.4	1200
2024-07-01	1147.6	1075.6	1136.4	1200
2024-06-01	1147.6	1075.6	1136.4	1200
2024-08-01	1147.6	1075.6	1136.4	1200
2024-04-01	1147.6	1075.6	1136.4	1200
2024-03-01	1147.6	1075.6	1136.4	1200
2024-02-01	1147.6	1075.6	1136.4	1200
2024-01-01	1147.6	1075.6	1136.4	1200
2023-12-01	1147.6	1075.6	1136.4	1200
2023-11-01	1147.6	1075.6	1136.4	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Olifantsrivier CC 2021 (Invitational)	2021-03-27	2021-03-27	Rapid	West Coast (WCU)	7	7	3.5	Yes	Analysis
2	West Coast Schools Prestige 2020 (U15 Girls)	2020-03-07	2020-03-07	Rapid	West Coast (WCU)	5	4	2	Yes	Analysis
3	Bo-Weskus Skole Prestige 2020 (O15+O18 Dogters)	2020-02-15	2020-02-15	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
4	Western Cape Schools Individuals 2019 (U15 Girls)	2019-05-04	2019-05-05	Standard	Eden (WEG)	6	6	2.5	Yes	Analysis
5	Weskus Skole Prestige Skaak Kampioenskappe 2019 (O15 Dogters)	2019-03-02	2019-04-06	Standard	West Coast (WCU)	6	6	3	Yes	Analysis
6	Bo-Weskus Skole Skaak Prestige 2019 (Ope Dogters)	2019-02-16	2019-02-16	Rapid	West Coast (WCU)	7	7	4	Yes	Analysis
7	Western Cape Schools Individuals 2018 (U13 Girls)	2018-05-19	2018-05-20	Standard	Overberg (WOS)	6	6	2	Yes	Analysis
8	West Coast Schools Prestige Individual Championship 2018 (U13 Girls)	2018-03-10	2018-03-24	Standard	West Coast (WCU)	6	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament Olifantsrivier CC 2021				Tournament Olifantsrivier CC 2021
		date 2021-03-27	rnd 1	type Rapid	result 0.5	date 2021-03-27	rnd 3	type Rapid	result 1
		Opponent Ligwa, A (Anastacia)				Opponent Saal, F (Fabian)
2	3	Tournament Bo-Weskus Skole Prestige 2020				Tournament West Coast Schools Prestige 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-03-07	rnd 1	type Rapid	result 1
		Opponent Owies, L (Lehanna)				Opponent Cloete, R (Roberta)
3	3	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-04	rnd 3	type Standard	result 1	date 2019-05-05	rnd 5	type Standard	result 1
		Opponent Festus, T (Tracey Lee Rogail)				Opponent Green, CL (Carol-Lynne)

#	Games	Start				End
1	3	Tournament Western Cape Schools Individuals 2019				Tournament Western Cape Schools Individuals 2019
		date 2019-05-04	rnd 3	type Standard	result 1	date 2019-05-05	rnd 5	type Standard	result 1
		Opponent Festus, T (Tracey Lee Rogail)				Opponent Green, CL (Carol-Lynne)
2	3	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 4	type Standard	result 1	date 2018-03-24	rnd 6	type Standard	result 1
		Opponent Oldroyd, E (Edith)				Opponent Nel, L (Leigh-Andrea)
3	2	Tournament Bo-Weskus Skole Prestige 2020				Tournament Bo-Weskus Skole Prestige 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-02-15	rnd 6	type Standard	result 1
		Opponent Owies, L (Lehanna)				Opponent Julies, F (Fredeline)

#	Games	Start				End
1	3	Tournament Olifantsrivier CC 2021				Tournament Olifantsrivier CC 2021
		date 2021-03-27	rnd 1	type Rapid	result 0.5	date 2021-03-27	rnd 3	type Rapid	result 1
		Opponent Ligwa, A (Anastacia)				Opponent Saal, F (Fabian)
2	2	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament Bo-Weskus Skole Skaak Prestige 2019
		date 2019-02-16	rnd 3	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Jantjies, J (Jo-Ann)				Opponent Cloete, L (Lameaze)
3	1	Tournament Olifantsrivier CC 2021				Tournament Olifantsrivier CC 2021
		date 2021-03-27	rnd 6	type Rapid	result 1	date 2021-03-27	rnd 6	type Rapid	result 1
		Opponent Owies, R (Raydn)				Opponent Owies, R (Raydn)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Bo-Weskus Skole Prestige 2020				Tournament West Coast Schools Prestige 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-03-07	rnd 1	type Rapid	result 1
		Opponent Owies, L (Lehanna)				Opponent Cloete, R (Roberta)
2	3	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 4	type Standard	result 1	date 2018-03-24	rnd 6	type Standard	result 1
		Opponent Oldroyd, E (Edith)				Opponent Nel, L (Leigh-Andrea)
3	2	Tournament Olifantsrivier CC 2021				Tournament Olifantsrivier CC 2021
		date 2021-03-27	rnd 2	type Rapid	result 1	date 2021-03-27	rnd 3	type Rapid	result 1
		Opponent Maletta, J (Johan)				Opponent Saal, F (Fabian)

#	Games	Start				End
1	3	Tournament West Coast Schools Prestige Individual Championship 2018				Tournament West Coast Schools Prestige Individual Championship 2018
		date 2018-03-10	rnd 4	type Standard	result 1	date 2018-03-24	rnd 6	type Standard	result 1
		Opponent Oldroyd, E (Edith)				Opponent Nel, L (Leigh-Andrea)
2	2	Tournament Bo-Weskus Skole Prestige 2020				Tournament Bo-Weskus Skole Prestige 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-02-15	rnd 6	type Standard	result 1
		Opponent Owies, L (Lehanna)				Opponent Julies, F (Fredeline)
3	2	Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019				Tournament Weskus Skole Prestige Skaak Kampioenskappe 2019
		date 2019-03-02	rnd 1	type Standard	result 1	date 2019-03-02	rnd 2	type Standard	result 1
		Opponent Van Wyk, A (Alicia)				Opponent Beyers, S (Shireen)

#	Games	Start				End
1	2	Tournament Olifantsrivier CC 2021				Tournament Olifantsrivier CC 2021
		date 2021-03-27	rnd 2	type Rapid	result 1	date 2021-03-27	rnd 3	type Rapid	result 1
		Opponent Maletta, J (Johan)				Opponent Saal, F (Fabian)
2	2	Tournament Bo-Weskus Skole Skaak Prestige 2019				Tournament Bo-Weskus Skole Skaak Prestige 2019
		date 2019-02-16	rnd 3	type Rapid	result 1	date 2019-02-16	rnd 4	type Rapid	result 1
		Opponent Jantjies, J (Jo-Ann)				Opponent Cloete, L (Lameaze)
3	1	Tournament Olifantsrivier CC 2021				Tournament Olifantsrivier CC 2021
		date 2021-03-27	rnd 6	type Rapid	result 1	date 2021-03-27	rnd 6	type Rapid	result 1
		Opponent Owies, R (Raydn)				Opponent Owies, R (Raydn)

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	Maletta ,L (Legene)	4	0	-425	2	0	-425	2	0	-425	0	0	0
1	Maletta ,L (Legene)	4	1354.6	929.6	2	1329.4	929.6	2	1005.2	929.6	0	0	0
2	Maarman ,P (Perusha)	2	0	-425	1	0	-425	1	0	-425	0	0	0
2	Maarman ,P (Perusha)	2	1273.9	848.9	1	1265.5	848.9	1	957	848.9	0	0	0
3	Beyers ,S (Shireen)	2	2	425	1	1	425	1	1	425	0	0	0
3	Beyers ,S (Shireen)	2	888.9	1313.9	1	872.8	1313.9	1	600.8	1313.9	0	0	0
4	Ligwa ,A (Anastacia)	2	0.5	-212.5	1	0	-425	1	0.5	0	0	0	0
4	Ligwa ,A (Anastacia)	2	1147.1	934.6	1	1018.4	722.1	1	758	1147.1	0	0	0
5	Paff ,A (Anastacia)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Paff ,A (Anastacia)	1	746.4	746.4	1	788.8	746.4	0	0	0	0	0	0
6	Johnson ,J (Jesdine)	1	1	425	1	1	425	0	0	0	0	0	0
6	Johnson ,J (Jesdine)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Nel ,L (Leigh-Andrea)	1	1	425	1	1	425	0	0	0	0	0	0
7	Nel ,L (Leigh-Andrea)	1	681.6	1106.6	1	681.6	1106.6	0	0	0	0	0	0
8	Palmer ,ZE (Zante)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Palmer ,ZE (Zante)	1	1268.7	843.7	1	1270.1	843.7	0	0	0	0	0	0
9	Oldroyd ,E (Edith)	1	1	425	1	1	425	0	0	0	0	0	0
9	Oldroyd ,E (Edith)	1	500	925	1	500	925	0	0	0	0	0	0
10	Adams ,A (Atiyyah)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Adams ,A (Atiyyah)	1	1065.3	640.3	1	1028.6	640.3	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

Petro, Y (Yulin)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms