Chess South Africa Ratings Database

PLAYER PAGE

Personal

Donachie, S (Serena)

Chess SA id

201007582

FIDE id

Date of birth

2001-11-07 (Adult)

Gender

Female

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-04-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	839.8	857.2	742	750
Raw rating	839.8	857.2	742	750
Weighted rating	839.8	857.2	742	750
Weighted performance	0	0	0	0
Floor	500	500	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	277	270.2	318.4	314.8
Highest rating	1200 2024-11-01	1408 2019-04-01	1200 2024-02-01	1200 2018-02-01
Highest raw rating	839.8 2024-02-01	857.2 2024-02-01	742 2024-02-01	750 2024-02-01
Highest weighted rating	839.8 2024-11-01	857.2 2024-11-01	742 2024-11-01	750 2024-11-01
Highest weighted performance	1200 2024-12-01	1408 2019-04-01	1200 2024-02-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	839.8	857.2	742	750
Analysis
Rating	839.8	857.2	742	750
Raw rating	839.8	857.2	742	750
Weighted rating	839.8	857.2	742
Weighted performance	0	0	0
K-factor	40	40	40	40
Floor	500	500	500	500
Max/Min rating change allowed	277	270.2	318.4	314.8
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	839.8	857.2	742	750
New weighted rating	839.8	857.2	742	750
New weighted performance	0	0	0	0
Temp new rating	839.8	857.2	742	750
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	839.8	857.2	742	750
New K-factor	40	40	40	40
New floor	500	500	500	500

Item	Main	Standard	Blitz
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	130	124	6

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult 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	12	4	33.33	-141.7	1164.7	1023
Standard	6	3	50	0	1200	1200
Rapid	0	0	0	0	0	0
Blitz	6	1	16.67	-283.3	1129.3	846

Date	Main	Standard	Rapid	Blitz
2025-11-01	839.8	857.2	742	750
2025-09-30	839.8	857.2	742	750
2025-09-01	839.8	857.2	742	750
2025-08-01	839.8	857.2	742	750
2025-07-01	839.8	857.2	742	750
2025-06-01	839.8	857.2	742	750
2025-05-01	839.8	857.2	742	750
2025-04-01	839.8	857.2	742	750
2025-03-01	839.8	857.2	742	750
2025-02-01	839.8	857.2	742	750
2025-01-01	839.8	857.2	742	750
2024-12-01	839.8	857.2	742	750
2024-11-01	839.8	857.2	742	750
2024-10-01	839.8	857.2	742	750
2024-09-01	839.8	857.2	742	750
2024-08-01	839.8	857.2	742	750
2024-07-01	839.8	857.2	742	750
2024-09-01	839.8	857.2	742	750
2024-05-01	839.8	857.2	742	750
2024-04-01	839.8	857.2	742	750
2024-03-01	839.8	857.2	742	750
2024-02-01	839.8	857.2	742	750
2024-01-01	839.8	857.2	742	750
2023-12-01	839.8	857.2	742	750

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	Clarendon Derby Day 2019	2019-04-12	2019-04-12	Standard	Buffalo City (EBC)	1	1	1	Yes	Analysis
2	Smart Chess Blitz 2018 (U18)	2018-03-03	2018-03-03	Blitz	Mangaung (FMB)	7	6	1	Yes	Analysis
3	Grey College Inter Team Chess Tournament 2018 (B)	2018-02-23	2018-02-24	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis

#	Games	Start				End
1	1	Tournament Clarendon Derby Day 2019				Tournament Clarendon Derby Day 2019
		date 2019-04-12	rnd 1	type Standard	result 1	date 2019-04-12	rnd 1	type Standard	result 1
		Opponent Mbasa, G (Giyose)				Opponent Mbasa, G (Giyose)
2	1	Tournament Smart Chess Blitz 2018				Tournament Smart Chess Blitz 2018
		date 2018-03-03	rnd 3	type Blitz	result 1	date 2018-03-03	rnd 3	type Blitz	result 1
		Opponent Mokhethi, S (Sipho)				Opponent Mokhethi, S (Sipho)
3	1	Tournament Grey College Inter Team Chess Tournament 2018				Tournament Grey College Inter Team Chess Tournament 2018
		date 2018-02-24	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Fry, B (Brooklyn)				Opponent Fry, B (Brooklyn)

#	Games	Start				End
1	1	Tournament Clarendon Derby Day 2019				Tournament Clarendon Derby Day 2019
		date 2019-04-12	rnd 1	type Standard	result 1	date 2019-04-12	rnd 1	type Standard	result 1
		Opponent Mbasa, G (Giyose)				Opponent Mbasa, G (Giyose)
2	1	Tournament Grey College Inter Team Chess Tournament 2018				Tournament Grey College Inter Team Chess Tournament 2018
		date 2018-02-24	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Fry, B (Brooklyn)				Opponent Fry, B (Brooklyn)
3	1	Tournament Grey College Inter Team Chess Tournament 2018				Tournament Grey College Inter Team Chess Tournament 2018
		date 2018-02-23	rnd 1	type Standard	result 1	date 2018-02-23	rnd 1	type Standard	result 1
		Opponent Gelderblom, L (Ludwig)				Opponent Gelderblom, L (Ludwig)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Smart Chess Blitz 2018				Tournament Smart Chess Blitz 2018
		date 2018-03-03	rnd 3	type Blitz	result 1	date 2018-03-03	rnd 3	type Blitz	result 1
		Opponent Mokhethi, S (Sipho)				Opponent Mokhethi, S (Sipho)

#	Games	Start				End
1	1	Tournament Clarendon Derby Day 2019				Tournament Clarendon Derby Day 2019
		date 2019-04-12	rnd 1	type Standard	result 1	date 2019-04-12	rnd 1	type Standard	result 1
		Opponent Mbasa, G (Giyose)				Opponent Mbasa, G (Giyose)
2	1	Tournament Smart Chess Blitz 2018				Tournament Smart Chess Blitz 2018
		date 2018-03-03	rnd 3	type Blitz	result 1	date 2018-03-03	rnd 3	type Blitz	result 1
		Opponent Mokhethi, S (Sipho)				Opponent Mokhethi, S (Sipho)
3	1	Tournament Grey College Inter Team Chess Tournament 2018				Tournament Grey College Inter Team Chess Tournament 2018
		date 2018-02-24	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Fry, B (Brooklyn)				Opponent Fry, B (Brooklyn)

#	Games	Start				End
1	1	Tournament Clarendon Derby Day 2019				Tournament Clarendon Derby Day 2019
		date 2019-04-12	rnd 1	type Standard	result 1	date 2019-04-12	rnd 1	type Standard	result 1
		Opponent Mbasa, G (Giyose)				Opponent Mbasa, G (Giyose)
2	1	Tournament Grey College Inter Team Chess Tournament 2018				Tournament Grey College Inter Team Chess Tournament 2018
		date 2018-02-24	rnd 3	type Standard	result 1	date 2018-02-24	rnd 3	type Standard	result 1
		Opponent Fry, B (Brooklyn)				Opponent Fry, B (Brooklyn)
3	1	Tournament Grey College Inter Team Chess Tournament 2018				Tournament Grey College Inter Team Chess Tournament 2018
		date 2018-02-23	rnd 1	type Standard	result 1	date 2018-02-23	rnd 1	type Standard	result 1
		Opponent Gelderblom, L (Ludwig)				Opponent Gelderblom, L (Ludwig)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament Smart Chess Blitz 2018				Tournament Smart Chess Blitz 2018
		date 2018-03-03	rnd 3	type Blitz	result 1	date 2018-03-03	rnd 3	type Blitz	result 1
		Opponent Mokhethi, S (Sipho)				Opponent Mokhethi, S (Sipho)

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	Matthews ,B (Bradly)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Matthews ,B (Bradly)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Majoang ,M (Motheo)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Majoang ,M (Motheo)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Van Aardt ,D (Durand)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Van Aardt ,D (Durand)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Gelderblom ,L (Ludwig)	1	1	425	1	1	425	0	0	0	0	0	0
4	Gelderblom ,L (Ludwig)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Mbasa ,G (Giyose)	1	1	425	1	1	425	0	0	0	0	0	0
5	Mbasa ,G (Giyose)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Fry ,B (Brooklyn)	1	1	425	1	1	425	0	0	0	0	0	0
6	Fry ,B (Brooklyn)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Buchner ,E (Eduard)	1	0	-425	0	0	0	0	0	0	1	0	-425
7	Buchner ,E (Eduard)	1	1080.3	655.3	0	0	0	0	0	0	1	913	655.3
8	Duvenhage ,HW (Hendrik Wian)	1	0	-425	0	0	0	0	0	0	1	0	-425
8	Duvenhage ,HW (Hendrik Wian)	1	1257.7	832.7	0	0	0	0	0	0	1	1257.8	832.7
9	Mutambala ,B (Baraka)	1	0	-425	0	0	0	0	0	0	1	0	-425
9	Mutambala ,B (Baraka)	1	1031.5	606.5	0	0	0	0	0	0	1	905.8	606.5
10	Tshepo ,M (Makhetha)	1	0	-425	0	0	0	0	0	0	1	0	-425
10	Tshepo ,M (Makhetha)	1	1200	775	0	0	0	0	0	0	1	1200	775

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Donachie, S (Serena)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms