Chess South Africa Ratings Database

Surname or Chess SA id..

PLAYER TOURNAMENT DETAILS

Rosco Willemse

1170331116
Overberg (WOS)

Tournament details

Tour Id	20260549
Group Id	20260548
Name	Overberg Schools Primary School Trials (Region 1) 2026
Section	U9 Boys
Rounds	6
Format	Swiss
Type	Rapid
Start	2026-02-28
End	2026-02-28
Submitted	2026-02-28
Rated	2026-03-01
Submit age weight	1
Host	Overberg
Total time	30
Time weight	0.604
Official results	Official results

General

Games	6
Score	4
Percent	66.7
Dp	141.7
Aor	1259.8
Perform	1401.5
Penalties	0
Wins	4
Draws	0
Losses	2
White	3
Black	3
White wins	2
Black wins	2
Default wins	0
Default losses	0
Byes	0
Half byes	0
Rank	23
Final Pos	9
Share Pos	5
Count for rating	Yes

Analysis (Main)

Rating	1197.4
K-factor	40
Score	4
Expected score	2.56
Score - Expected score	1.44
Rating +/-	34.7

Analysis (Type)

Rating	1195.7
K-factor	40
Score	4
Expected score	2.52
Score - Expected score	1.48
Rating +/-	59

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	2026-02-28	Coetzer, R (Rossouw)	WOS		1425.2	1494.2	B	0	0.19	-0.19	-4.7	0.11	-0.11	-4.4	Yes
2	2026-02-28	Fourie, W (Wj)	WOS		1160.7	1200	W	0	0.58	-0.58	-14.1	0.54	-0.54	-21.5	Yes
3	2026-02-28	Swanepoel, M (Marco)	WOS		1203.8	1197.5	W	1	0.53	0.47	11.3	0.54	0.46	18.4	Yes
4	2026-02-28	Sander, M (Malakai)	WOS		1169.6	1181.9	B	1	0.49	0.51	12.3	0.47	0.53	21	Yes
5	2026-02-28	Mackenzie, T (Tylo)	WOS		1399.2	1309.3	W	1	0.31	0.69	16.8	0.41	0.59	23.6	Yes
6	2026-02-28	Tuckett, J (Jared)	WOS		1200	1200	B	1	0.46	0.54	13.2	0.45	0.55	21.9	Yes