Chess South Africa Ratings Database

PLAYER PAGE

Personal

Jonas, K (Kirwan)

Chess SA id

107057892

FIDE id

Date of birth

2007-09-24 (U20)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-02-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1251.8	1200	1259.4	1200
Raw rating	1251.8	1200	1259.4	1200
Weighted rating	1250.1	1200	1257.4	1200
Weighted performance	0	0	0	0
Floor	751.8	700	759.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	154	165.8	152.4	165.8
Highest rating	1459.9 2024-02-01	1200 2018-10-01	1440.2 2024-02-01	1200 2018-10-01
Highest raw rating	1251.8 2024-03-01	1200 2024-03-01	1259.4 2024-03-01	1200 2024-03-01
Highest weighted rating	1248.2 2025-08-01	1200 2018-10-01	1255.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1459.9 2024-02-01	1200 2024-03-01	1440.2 2024-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1251.8	1200	1259.4	1200
Analysis
Rating	1251.8	1200	1259.4	1200
Raw rating	1251.8	1200	1259.4	1200
Weighted rating	1250.1	1200	1257.4
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	751.8	700	759.4	700
Max/Min rating change allowed	154	165.8	152.4	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	1251.8	1200	1259.4	1200
New weighted rating	1250.8	1200	1258.2	1200
New weighted performance	0	0	0	0
Temp new rating	1251.8	1200	1259.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1251.8	1200	1259.4	1200
New K-factor	36	36	36	36
New floor	751.8	700	759.4	700

Item	Main	Rapid
	0	0
	0	0
	6	6
	0	0
	0	0
	0	0
History	6	6

Games since
	Main 6	Standard 0		Rapid 6		Blitz 0
Gender	Male
Age group	U20
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	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	6	4	66.67	141.7	1386.7	1528.4
Standard	0	0	0	0	0	0
Rapid	6	4	66.67	141.7	1386.7	1528.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1251.8	1200	1259.4	1200
2025-09-01	1251.8	1200	1259.4	1200
2025-08-01	1251.8	1200	1259.4	1200
2025-07-01	1251.8	1200	1259.4	1200
2025-06-01	1251.8	1200	1259.4	1200
2025-05-01	1251.8	1200	1259.4	1200
2025-04-01	1251.8	1200	1259.4	1200
2025-03-01	1251.8	1200	1259.4	1200
2025-02-01	1251.8	1200	1259.4	1200
2025-01-01	1251.8	1200	1259.4	1200
2024-12-01	1251.8	1200	1259.4	1200
2024-11-01	1251.8	1200	1259.4	1200
2024-10-01	1251.8	1200	1259.4	1200
2024-09-01	1251.8	1200	1259.4	1200
2024-08-01	1251.8	1200	1259.4	1200
2024-07-01	1251.8	1200	1259.4	1200
2024-06-01	1251.8	1200	1259.4	1200
2024-08-01	1251.8	1200	1259.4	1200
2024-04-01	1251.8	1200	1259.4	1200
2024-03-01	1251.8	1200	1259.4	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

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	Cape Winelands Schools - HS Trials 1 2024 (U18 Boys)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis

#	Games	Start				End
1	4	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 1	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Alkaster, R (Rickelme)				Opponent February, E (Ethan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 1	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Alkaster, R (Rickelme)				Opponent February, E (Ethan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 1	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Alkaster, R (Rickelme)				Opponent February, E (Ethan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Cape Winelands Schools - HS Trials 1 2024				Tournament Cape Winelands Schools - HS Trials 1 2024
		date 2024-02-17	rnd 1	type Rapid	result 1	date 2024-02-17	rnd 4	type Rapid	result 1
		Opponent Alkaster, R (Rickelme)				Opponent February, E (Ethan)

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	Dos Martiris ,A (Antonio)	1	1	425	0	0	0	1	1	425	0	0	0
1	Dos Martiris ,A (Antonio)	1	1220.5	1645.5	0	0	0	1	1238.2	1645.5	0	0	0
2	Williams ,B (Brett)	1	0	-425	0	0	0	1	0	-425	0	0	0
2	Williams ,B (Brett)	1	1354.9	929.9	0	0	0	1	1333.3	929.9	0	0	0
3	Lielieveld ,F (Franco)	1	0	-425	0	0	0	1	0	-425	0	0	0
3	Lielieveld ,F (Franco)	1	1760	1335	0	0	0	1	1515.7	1335	0	0	0
4	Kotze ,J (Johann)	1	1	425	0	0	0	1	1	425	0	0	0
4	Kotze ,J (Johann)	1	1204.7	1629.7	0	0	0	1	1168.7	1629.7	0	0	0
5	February ,E (Ethan)	1	1	425	0	0	0	1	1	425	0	0	0
5	February ,E (Ethan)	1	1498	1923	0	0	0	1	1230.6	1923	0	0	0
6	Alkaster ,R (Rickelme)	1	1	425	0	0	0	1	1	425	0	0	0
6	Alkaster ,R (Rickelme)	1	1282.1	1707.1	0	0	0	1	1258.1	1707.1	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Jonas, K (Kirwan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms