Chess South Africa Ratings Database

Surname or Chess SA id..

PLAYER TOURNAMENT DETAILS

Johan Van Der Merwe

1170332978
West Coast (WCU)

Tournament details

Tour Id	20262999
Group Id	20262999
Name	Pedro Booyse Top Schools 2026
Section	U9 Open
Rounds	6
Format	Team
Type	Standard
Start	2026-07-25
End	2026-07-25
Submitted	2026-08-21
Rated	2026-08-22
Submit age weight	0.55
Host	West Coast (WCU)
Total time	60
Time weight	0.83
Official results	Official results

General

Games	6
Score	3.5
Percent	58.3
Dp	70.8
Aor	1242.6
Perform	1313.4
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	14
Final Pos	8
Share Pos	8
Count for rating	Yes

Analysis (Main)

Rating	1281.6
K-factor	36
Score	3.5
Expected score	2.96
Score - Expected score	0.54
Rating +/-	8.8

Analysis (Type)

Rating	1171.3
K-factor	36
Score	3.5
Expected score	2.71
Score - Expected score	0.79
Rating +/-	15.6

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	2026-07-25	Abrahams, A (Anchalee)	WCU		1251.8	1151.6	W	1	0.47	0.53	8.8	0.51	0.49	9.7	Yes
2	2026-07-25	Juganan, E (Emily)	WCU		1058.9	1056.3	B	0	0.57	-0.57	-17	0.42	-0.42	-15.2	Yes
3	2026-07-25	Skippers, D (Devedene)	WCU		1301.7	1230.4	W	0	0.49	-0.49	-14.5	0.47	-0.47	-16.8	Yes
4	2026-07-25	Van Huyssteen, A (Alexander)	WCU		1388.4	1246.9	B	0.5	0.38	0.12	1.9	0.42	0.08	1.5	Yes
5	2026-07-25	Juganan, E (Emily)	WCU		1058.9	1056.3	W	1	0.65	0.35	5.7	0.51	0.49	9.8	Yes
6	2026-07-25	Skippers, D (Devedene)	WCU		1301.7	1230.4	B	1	0.4	0.6	9.8	0.38	0.62	12.2	Yes