Chess South Africa Ratings Database

Surname or Chess SA id..

PLAYER TOURNAMENT DETAILS

Nathan Grieb

1160300091
Overberg (WOS)

Tournament details

Tour Id	20250392
Group Id	20250390
Name	Overberg Schools - PS Trials (Region 1) 2025
Section	U9 Boys
Rounds	6
Format	Swiss
Type	Rapid
Start	2025-02-22
End	2025-02-22
Submitted	2025-02-23
Rated	2025-02-23
Submit age weight	1
Host	Overberg (WOS)
Total time	30
Time weight	0.604
Official results	Official results

General

Games	6
Score	3.5
Percent	58.3
Dp	70.8
Aor	1218.6
Perform	1289.4
Penalties	0
Wins	3
Draws	1
Losses	2
White	3
Black	3
White wins	2
Black wins	1
Default wins	0
Default losses	0
Byes	0
Half byes	0
Rank	10
Final Pos	11
Share Pos	9
Count for rating	Yes

Analysis (Main)

Rating	1242.8
K-factor	20
Score	3.5
Expected score	3.17
Score - Expected score	0.33
Rating +/-	4

Analysis (Type)

Rating	1214.8
K-factor	20
Score	3.5
Expected score	2.86
Score - Expected score	0.64
Rating +/-	12.8

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	2025-02-22	Swarts, Z (Zac-Anthony)	WOS		1165.1	1200	W	1	0.63	0.37	4.4	0.56	0.44	8.8	Yes
2	2025-02-22	Coetzer, R (Rossouw)	WOS		1377.1	1330	B	0	0.3	-0.3	-3.6	0.32	-0.32	-6.4	Yes
3	2025-02-22	Grobbelaar, M (Marlo)	WOS		1182.9	1208.2	W	0	0.61	-0.61	-7.3	0.55	-0.55	-11	Yes
4	2025-02-22	Sander, M (Malakai)	WOS		1184.4	1215.2	B	1	0.53	0.47	5.6	0.46	0.54	10.8	Yes
5	2025-02-22	Fourie, C (Cj)	WOS		1188	1221.6	W	1	0.61	0.39	4.7	0.53	0.47	9.4	Yes
6	2025-02-22	Barnard, H (Hendrik)	WOS		1214	1232.5	B	0.5	0.49	0.01	0.1	0.44	0.06	1.2	Yes