Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, R (Rosco)

Chess SA id

1150149954

FIDE id

Date of birth

2015-02-10 (U12)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-02-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1168.8	1160.8	1200	1200
Raw rating	1168.8	1160.8	1200	1200
Weighted rating	1168.8	1160.8	1200	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	173.4	175.3	165.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1168.8	1160.8	1200	1200
Analysis
Rating	1168.8	1160.8	1200	1200
Raw rating	1168.8	1160.8	1200	1200
Weighted rating	1168.8	1160.8	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	173.4	175.3	165.8	165.8
Games	0	0	0	0
Score	0	0	0	0
Expected score	0	0	0	0
Score-Expected	0	0	0	0
Temp raw +/-	0	0	0	0
Final raw +/-	0	0	0	0
New raw rating	1168.8	1160.8	1200	1200
New weighted rating	1168.8	1160.8	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1168.8	1160.8	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1168.8	1160.8	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	0	0
	0	0
	10	10
	0	0
	0	0
History	10	10

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1


	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

	Games	Score	%	Dp	AvgOpp	Performance
Main	0	0	0	0	0	0
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	10	4	40	-85	1198.3	1113.3
Standard	10	4	40	-85	1198.3	1113.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1168.8	1160.8	1200	1200
2025-09-30	1168.8	1160.8	1200	1200
2025-09-01	1168.8	1160.8	1200	1200
2025-08-01	1168.8	1160.8	1200	1200
2025-07-01	1168.8	1160.8	1200	1200
2025-06-01	1168.8	1160.8	1200	1200
2025-05-01	1168.8	1160.8	1200	1200
2025-04-01	1168.8	1160.8	1200	1200
2025-03-01	1168.8	1160.8	1200	1200
2025-02-01	1168.8	1160.8	1200	1200
2025-01-01	1168.8	1160.8	1200	1200
2024-12-01	1168.8	1160.8	1200	1200
2024-11-01	1168.8	1160.8	1200	1200
2024-10-01	1168.8	1160.8	1200	1200
2024-09-01	1168.8	1160.8	1200	1200
2024-08-01	1168.8	1160.8	1200	1200
2024-07-01	1168.8	1160.8	1200	1200
2024-09-01	1168.8	1160.8	1200	1200
2024-05-01	1168.8	1160.8	1200	1200
2024-04-01	1168.8	1160.8	1200	1200
2024-03-01	1168.8	1160.8	1200	1200
2024-02-01	1168.8	1160.8	1200	1200
2024-01-01	1168.8	1160.8	1200	1200
2023-12-01	1168.8	1160.8	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	George Schools Trials 2 2024 (U9 Boys)	2024-02-17	2024-02-17	Standard	Eden (WEG)	5	0	0	No	Analysis
2	George Chess Trials 3 2023 (U9 Boys)	2023-02-25	2023-02-25	Standard	Eden (WEG)	5	5	2	Yes	Analysis
3	George Chess Trials 2 2023 (U9 Boys)	2023-02-11	2023-02-11	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 3 2023
		date 2023-02-11	rnd 5	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Fourie, N (Nicholis)				Opponent Reddy, X (Xander)
2	1	Tournament George Chess Trials 3 2023				Tournament George Chess Trials 3 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 4	type Standard	result 1
		Opponent Damons, E (Ernest)				Opponent Damons, E (Ernest)
3	1	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Opperman, K (Kieran)				Opponent Opperman, K (Kieran)

#	Games	Start				End
1	2	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 3 2023
		date 2023-02-11	rnd 5	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Fourie, N (Nicholis)				Opponent Reddy, X (Xander)
2	1	Tournament George Chess Trials 3 2023				Tournament George Chess Trials 3 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 4	type Standard	result 1
		Opponent Damons, E (Ernest)				Opponent Damons, E (Ernest)
3	1	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Opperman, K (Kieran)				Opponent Opperman, K (Kieran)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 3 2023
		date 2023-02-11	rnd 5	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Fourie, N (Nicholis)				Opponent Reddy, X (Xander)
2	1	Tournament George Chess Trials 3 2023				Tournament George Chess Trials 3 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 4	type Standard	result 1
		Opponent Damons, E (Ernest)				Opponent Damons, E (Ernest)
3	1	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Opperman, K (Kieran)				Opponent Opperman, K (Kieran)

#	Games	Start				End
1	2	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 3 2023
		date 2023-02-11	rnd 5	type Standard	result 1	date 2023-02-25	rnd 1	type Standard	result 1
		Opponent Fourie, N (Nicholis)				Opponent Reddy, X (Xander)
2	1	Tournament George Chess Trials 3 2023				Tournament George Chess Trials 3 2023
		date 2023-02-25	rnd 4	type Standard	result 1	date 2023-02-25	rnd 4	type Standard	result 1
		Opponent Damons, E (Ernest)				Opponent Damons, E (Ernest)
3	1	Tournament George Chess Trials 2 2023				Tournament George Chess Trials 2 2023
		date 2023-02-11	rnd 2	type Standard	result 1	date 2023-02-11	rnd 2	type Standard	result 1
		Opponent Opperman, K (Kieran)				Opponent Opperman, K (Kieran)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

Top 10 opponents most often played

#	Opponent	Main			Standard			Rapid			Blitz
		Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp	Gms	Score	Dp
		Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat	Gms	Aor	Prat
1	Reddy ,X (Xander)	1	1	425	1	1	425	0	0	0	0	0	0
1	Reddy ,X (Xander)	1	1188.1	1613.1	1	1180.8	1613.1	0	0	0	0	0	0
2	Brewis ,F (Fox)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Brewis ,F (Fox)	1	1127.2	702.2	1	1114.4	702.2	0	0	0	0	0	0
3	Steenberg ,R (Regardt)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Steenberg ,R (Regardt)	1	1171.4	746.4	1	1166	746.4	0	0	0	0	0	0
4	Fourie ,N (Nicholis)	1	1	425	1	1	425	0	0	0	0	0	0
4	Fourie ,N (Nicholis)	1	1189	1614	1	1188	1614	0	0	0	0	0	0
5	Damons ,E (Ernest)	1	1	425	1	1	425	0	0	0	0	0	0
5	Damons ,E (Ernest)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Nel ,H (Hanroux Maritz)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Nel ,H (Hanroux Maritz)	1	1150.9	725.9	1	1141.6	725.9	0	0	0	0	0	0
7	Opperman ,K (Kieran)	1	1	425	1	1	425	0	0	0	0	0	0
7	Opperman ,K (Kieran)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Bond ,B (Ben)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Bond ,B (Ben)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	James ,W (William)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	James ,W (William)	1	1251.1	826.1	1	1253.5	826.1	0	0	0	0	0	0
10	Van Der Merwe ,O (Oliver)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Van Der Merwe ,O (Oliver)	1	1305.2	880.2	1	1303.9	880.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Van Der Merwe, R (Rosco)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms