Chess South Africa Ratings Database

Surname or Chess SA id..

PLAYER TOURNAMENT DETAILS

Jonah Robertson

1120112288
Cape Winelands (WCW)

Tournament details

Tour Id	20232041
Group Id	20232037
Name	Western Cape Top Schools 2023
Section	U11 Mixed
Rounds	6
Format	Round-Robin
Type	Standard
Start	2023-09-02
End	2023-09-03
Submitted	2023-09-08
Rated	2023-09-08
Submit age weight	1
Host	Cape Winelands (WCW)
Total time	60
Time weight	0.83
Official results	Official results

General

Games	5
Score	4
Percent	80
Dp	255
Aor	1526.5
Perform	1781.5
Penalties	0
Wins	4
Draws	0
Losses	1
White	2
Black	3
White wins	1
Black wins	3
Default wins	1
Default losses	0
Byes	0
Half byes	0
Rank	6
Final Pos	0
Share Pos	0
Count for rating	Yes

Analysis (Main)

Rating	1554.7
K-factor	20
Score	4
Expected score	2.62
Score - Expected score	1.38
Rating +/-	22.9

Analysis (Type)

Rating	1470.9
K-factor	20
Score	4
Expected score	2.33
Score - Expected score	1.67
Rating +/-	33.4

Opponents

Round	Date	Opponent	Fed	Title	Main	Type	Col	Res	Main			Type			Cfr
Round	Date	Opponent	Fed	Title	Main	Type	Col	Res	We	Swe	+/-	We	Swe	+/-	Cfr
1	2023-09-02	Damane, L (Lukhanyo)	WCT		1294.8	1250.2	D	1	0	0	0	0	0	0	No (Forfeit)
2	2023-09-02	Van Der Merwe, S (Schalk Wolf)	WCT		1557.6	1497.1	W	0	0.54	-0.54	-9	0.51	-0.51	-10.2	Yes
3	2023-09-02	Brink, A (Andrew)	WEG		1694.6	1697.4	B	1	0.3	0.7	11.6	0.19	0.81	16.2	Yes
4	2023-09-02	Cornforth, K (Kayleigh)	WEG		1673.6	1716.4	B	1	0.32	0.68	11.3	0.17	0.83	16.6	Yes
5	2023-09-03	Cornelius, L (Laythan)	WCW		1474.3	1357.2	W	1	0.64	0.36	6	0.67	0.33	6.6	Yes
6	2023-09-03	Magubane, P (Phila)	MGS		1232.4	1200	B	1	0.83	0.17	2.8	0.77	0.23	4.6	Yes