Chess South Africa Ratings Database

PLAYER PAGE

Personal

Barnes, D (Derek)

Chess SA id

1150304358

FIDE id

Date of birth

2015-10-26 (U12)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1088.3

Item	Main	Standard	Rapid	Blitz
Rating	1219.8	1222.1	1200	1200
Raw rating	1209	1213.4	1200	1200
Weighted rating	1219.8	1222.1	1200	1200
Weighted performance	1199.9	1197.7	0	0
Floor	761.2	771.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	163.7	162.7	165.8	165.8
Highest rating	1396.9 2024-05-01	1396 2024-05-01	1200 2024-06-01	1200 2024-06-01
Highest raw rating	1261.2 2024-09-01	1271.6 2024-09-01	1200 2024-06-01	1200 2024-06-01
Highest weighted rating	1261.2 2024-10-01	1271.6 2024-10-01	1200 2024-06-01	1200 2024-06-01
Highest weighted performance	1396.9 2024-05-01	1396 2024-05-01	1200 2024-06-01	1200 2024-06-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.7	-0.5	0	0
New rating	1219.1	1221.5	1200	1200
Analysis
Rating	1219.8	1222.1	1200	1200
Raw rating	1209	1213.4	1200	1200
Weighted rating	1219.8	1222.1	1200
Weighted performance	1199.9	1197.7	0
K-factor	36	36	36	36
Floor	761.2	771.6	700	700
Max/Min rating change allowed	163.7	162.7	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	1209	1213.4	1200	1200
New weighted rating	1219.1	1221.5	1200	1200
New weighted performance	1199.5	1197.3	0	0
Temp new rating	1219.1	1221.5	1200	1200
Temp new rating +/-	-0.7	-0.5	0	0
Final new rating +/-	-0.7	-0.5	0	0
New rating	1219.1	1221.5	1200	1200
New K-factor	36	36	36	36
New floor	761.2	771.6	700	700

Item	Main	Standard
	0	0
	34	34
	19	19
	0	0
	0	0
	0	0
History	53	53

Games since
	Main 53	Standard 53		Rapid 0		Blitz 0
Gender	Male
Age group	U12
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3885		1257		451
Male	2946		964		343
U12	643		204		76
U12 Male	441		145		51
Standard
	RSA		Province		Region
Overall	3753		1326		518
Male	2843		1018		395
U12	599		215		85
U12 Male	413		151		56
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	34	9.5	27.94	-187.5	1284.3	1096.8
Standard	34	9.5	27.94	-187.5	1284.3	1096.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	53	19	35.85	-120.3	1261.1	1140.8
Standard	53	19	35.85	-120.3	1261.1	1140.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1209	1213.4	1200	1200
2025-09-01	1209	1213.4	1200	1200
2025-08-01	1236.2	1240	1200	1200
2025-07-01	1219.4	1221	1200	1200
2025-06-01	1218.8	1220.4	1200	1200
2025-05-01	1218.3	1219.9	1200	1200
2025-04-01	1213.9	1215.2	1200	1200
2025-03-01	1214.1	1214.8	1200	1200
2025-02-01	1212.8	1213.1	1200	1200
2025-01-01	1194	1185.2	1200	1200
2024-12-01	1194	1185.2	1200	1200
2024-11-01	1246.6	1250.7	1200	1200
2024-10-01	1261.2	1271.6	1200	1200
2024-09-01	1261.2	1271.6	1200	1200
2024-08-01	1238.8	1246.8	1200	1200
2024-07-01	1238.8	1246.8	1200	1200
2024-06-01	1238.8	1246.8	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng North School District CLOSED League Finals - D1 (U11)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	1	Yes	Analysis
3	2025 Menlo Open (U12)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
4	2025 Gauteng North School Individual Championships D1 (U11 Open)	2025-05-17	2025-05-17	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
5	Lubowski Open 2025 (D2)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
6	Constantiapark Open 2025 (U12)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
7	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	0.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng North School District CLOSED League Finals - D1 (U11)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
2	2025 Etienne Lewis Closed Chess Tournament (U12)	2025-08-08	2025-08-10	Standard	Tshwane (GTP)	7	7	1	Yes	Analysis
3	2025 Menlo Open (U12)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
4	2025 Gauteng North School Individual Championships D1 (U11 Open)	2025-05-17	2025-05-17	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
5	Lubowski Open 2025 (D2)	2025-03-21	2025-03-22	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
6	Constantiapark Open 2025 (U12)	2025-02-15	2025-02-15	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
7	2025 Tshwane Chess OPEN Registration Tournament (U12)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	0.5	Yes	Analysis
8	Lardies Ope 2024 (U10)	2024-10-26	2024-10-26	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
9	Gauteng Top Schools 2024 (U9 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
10	D1 Gauteng North District School Closed 2024 (U9)	2024-08-03	2024-08-03	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
11	2024 Gauteng North School District Individual Championships - D1 (U9 Boys)	2024-05-11	2024-05-11	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2025 Menlo Open				Tournament 2025 Menlo Open
		date 2025-07-26	rnd 2	type Standard	result 0.5	date 2025-07-26	rnd 5	type Standard	result 0.5
		Opponent Bettesworth, J (Joshua)				Opponent Tukker, J (Jakus)
2	3	Tournament D1 Gauteng North District School Closed 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 4	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Slabbert, A (Ava)				Opponent Cordier, L (Leandre)
3	3	Tournament 2024 Gauteng North School District Individual Championships - D1				Tournament D1 Gauteng North District School Closed 2024
		date 2024-05-11	rnd 5	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Pretorius, C (Caleb)				Opponent Khanye, M (Minenhle)

#	Games	Start				End
1	4	Tournament 2025 Menlo Open				Tournament 2025 Menlo Open
		date 2025-07-26	rnd 2	type Standard	result 0.5	date 2025-07-26	rnd 5	type Standard	result 0.5
		Opponent Bettesworth, J (Joshua)				Opponent Tukker, J (Jakus)
2	3	Tournament D1 Gauteng North District School Closed 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 4	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Slabbert, A (Ava)				Opponent Cordier, L (Leandre)
3	3	Tournament 2024 Gauteng North School District Individual Championships - D1				Tournament D1 Gauteng North District School Closed 2024
		date 2024-05-11	rnd 5	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Pretorius, C (Caleb)				Opponent Khanye, M (Minenhle)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament D1 Gauteng North District School Closed 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 4	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Slabbert, A (Ava)				Opponent Cordier, L (Leandre)
2	2	Tournament 2025 Gauteng North School District CLOSED League Finals - D1				Tournament 2025 Gauteng North School District CLOSED League Finals - D1
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Phoku, H (Happen)				Opponent Rampersadh, M (Micah)
3	2	Tournament 2024 Gauteng North School District Individual Championships - D1				Tournament 2024 Gauteng North School District Individual Championships - D1
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 3	type Standard	result 1
		Opponent Mc Gill, J (Jonathan)				Opponent Spies, D (Duard)

#	Games	Start				End
1	3	Tournament D1 Gauteng North District School Closed 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 4	type Standard	result 1	date 2024-10-04	rnd 1	type Standard	result 1
		Opponent Slabbert, A (Ava)				Opponent Cordier, L (Leandre)
2	2	Tournament 2025 Gauteng North School District CLOSED League Finals - D1				Tournament 2025 Gauteng North School District CLOSED League Finals - D1
		date 2025-08-16	rnd 4	type Standard	result 1	date 2025-08-16	rnd 5	type Standard	result 1
		Opponent Phoku, H (Happen)				Opponent Rampersadh, M (Micah)
3	2	Tournament 2024 Gauteng North School District Individual Championships - D1				Tournament 2024 Gauteng North School District Individual Championships - D1
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 3	type Standard	result 1
		Opponent Mc Gill, J (Jonathan)				Opponent Spies, D (Duard)

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	Motumi ,T (Tsepe)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Motumi ,T (Tsepe)	3	1278.6	853.6	3	1271.6	853.6	0	0	0	0	0	0
2	Kgwale ,O (Obotegile)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Kgwale ,O (Obotegile)	2	1453.7	1028.7	2	1450.3	1028.7	0	0	0	0	0	0
3	Venter ,D (Daniel)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	Venter ,D (Daniel)	2	1127.1	914.6	2	1118.2	914.6	0	0	0	0	0	0
4	Ebersohn ,C (Christiaan)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Ebersohn ,C (Christiaan)	1	1376.7	951.7	1	1366.3	951.7	0	0	0	0	0	0
5	Vaughn ,E (Ella)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Vaughn ,E (Ella)	1	1200	1200	1	1200	1200	0	0	0	0	0	0
6	Van Der Merwe ,ZC (Zander Christiaan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Van Der Merwe ,ZC (Zander Christiaan)	1	1509.7	1084.7	1	1503.9	1084.7	0	0	0	0	0	0
7	Jacobs ,I (Inge)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Jacobs ,I (Inge)	1	1296.5	871.5	1	1289.6	871.5	0	0	0	0	0	0
8	Li ,J (Jiming)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Li ,J (Jiming)	1	1491.9	1066.9	1	1488.4	1066.9	0	0	0	0	0	0
9	Marais ,L (Luke)	1	1	425	1	1	425	0	0	0	0	0	0
9	Marais ,L (Luke)	1	1374.4	1799.4	1	1363	1799.4	0	0	0	0	0	0
10	Du Toit ,U (Ulrike)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Du Toit ,U (Ulrike)	1	1170.4	745.4	1	1165.1	745.4	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

Barnes, D (Derek)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms