Chess South Africa Ratings Database

Surname or Chess SA id..

PLAYER TOURNAMENT DETAILS

Clarissa Extro

2120332477
Overberg (WOS)

Tournament details

Tour Id	20260394
Group Id	20260394
Name	Overberg Schools High School Trials 2026
Section	U15 Girls
Rounds	6
Format	Swiss
Type	Rapid
Start	2026-02-21
End	2026-02-21
Submitted	2026-02-22
Rated	2026-02-23
Submit age weight	1
Host	Overberg (WOS)
Total time	30
Time weight	0.6
Official results	Official results

General

Games	6
Score	2
Percent	33.3
Dp	-141.7
Aor	1247.2
Perform	1105.5
Penalties	0
Wins	2
Draws	0
Losses	4
White	3
Black	3
White wins	0
Black wins	2
Default wins	0
Default losses	0
Byes	0
Half byes	0
Rank	25
Final Pos	25
Share Pos	23
Count for rating	Yes

Analysis (Main)

Rating	1200
K-factor	20
Score	2
Expected score	2.68
Score - Expected score	-0.68
Rating +/-	-8.2

Analysis (Type)

Rating	1200
K-factor	20
Score	2
Expected score	2.82
Score - Expected score	-0.82
Rating +/-	-16.4

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	2026-02-21	Buhr, G (Gretchen)	WOS		1289.1	1251.8	B	0	0.35	-0.35	-4.2	0.4	-0.4	-8	Yes
2	2026-02-21	Somi, O (Onwabe)	WOS		1342.6	1195.6	W	0	0.38	-0.38	-4.6	0.55	-0.55	-11	Yes
3	2026-02-21	September, R (Rioney)	WOS		1200	1200	B	1	0.46	0.54	6.5	0.46	0.54	10.8	Yes
4	2026-02-21	van de Rheede, F (Farownique)	WOS		1256.5	1313.3	W	0	0.48	-0.48	-5.8	0.41	-0.41	-8.2	Yes
5	2026-02-21	Smith, M (Mieke)	WOS		1200	1200	B	1	0.46	0.54	6.5	0.46	0.54	10.8	Yes
6	2026-02-21	Sebybo, N (Natasha)	WOS		1195.2	1199.8	W	0	0.55	-0.55	-6.6	0.54	-0.54	-10.8	Yes