Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, O (Oliver)

Chess SA id

1150192062

FIDE id

Date of birth

2015-05-19 (U12)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1157.5

Item	Main	Standard	Rapid	Blitz
Rating	1263.6	1248.6	1268.1	1200
Raw rating	1263.6	1248.6	1260.6	1200
Weighted rating	1256.5	1228.4	1268.1	1200
Weighted performance	1166.4	0	0	0
Floor	774.6	748.6	776.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	151.5	154.7	152.1	165.8
Highest rating	1375.9 2024-02-01	1290 2024-05-01	1459.5 2024-02-01	1200 2024-02-01
Highest raw rating	1274.6 2025-05-05	1248.6 2025-05-05	1276.5 2025-02-01	1200 2024-02-01
Highest weighted rating	1274.6 2024-09-01	1248.6 2024-09-01	1276.5 2024-10-01	1200 2024-02-01
Highest weighted performance	1375.9 2024-02-01	1290 2024-05-01	1459.5 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0.2	0
New rating	1263.6	1248.6	1268.3	1200
Analysis
Rating	1263.6	1248.6	1268.1	1200
Raw rating	1263.6	1248.6	1260.6	1200
Weighted rating	1256.5	1228.4	1268.1
Weighted performance	1166.4	0	0
K-factor	36	36	36	36
Floor	774.6	748.6	776.5	700
Max/Min rating change allowed	151.5	154.7	152.1	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	1263.6	1248.6	1260.6	1200
New weighted rating	1258	1230.8	1268.3	1200
New weighted performance	1165.9	0	0	0
Temp new rating	1263.6	1248.6	1268.3	1200
Temp new rating +/-	0	0	0.2	0
Final new rating +/-	0	0	0.2	0
New rating	1263.6	1248.6	1268.3	1200
New K-factor	36	36	36	36
New floor	774.6	748.6	776.5	700

Item	Main	Standard	Rapid
	0	0	0
	15	5	10
	23	13	10
	0	0	0
	0	0	0
	0	0	0
History	38	18	20

Games since
	Main 38	Standard 18		Rapid 20		Blitz 0
Gender	Male
Age group	U12
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
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	1216		212		70
Male	983		170		44
U12	226		30		18
U12 Male	162		20		12
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	15	9	60	85	1212.5	1297.5
Standard	5	3.5	70	170	1182.4	1352.4
Rapid	10	5.5	55	42.5	1227.6	1270.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	38	23	60.53	89.5	1208.3	1297.8
Standard	18	10.5	58.33	70.8	1203.5	1274.3
Rapid	20	12.5	62.5	106.2	1212.7	1318.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1263.6	1248.6	1260.6	1200
2025-09-01	1263.6	1248.6	1260.6	1200
2025-08-01	1274.6	1248.6	1276.5	1200
2025-07-01	1274.6	1248.6	1276.5	1200
2025-06-01	1274.6	1248.6	1276.5	1200
2025-05-01	1274.6	1248.6	1276.5	1200
2025-04-01	1256.3	1217.3	1276.5	1200
2025-03-01	1256.3	1217.3	1276.5	1200
2025-02-01	1256.3	1217.3	1276.5	1200
2025-01-01	1244.3	1217.3	1267.8	1200
2024-12-01	1244.3	1217.3	1267.8	1200
2024-11-01	1244.3	1217.3	1267.8	1200
2024-10-01	1234.1	1197.9	1267.8	1200
2024-09-01	1255.3	1222	1267.8	1200
2024-08-01	1255.3	1222	1267.8	1200
2024-07-01	1255.3	1222	1267.8	1200
2024-06-01	1241.6	1200	1267.8	1200
2024-08-01	1241.6	1200	1267.8	1200
2024-04-01	1241.6	1200	1267.8	1200
2024-03-01	1233.4	1200	1258.4	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	Benoni Primary School Cluster Teams 2025 (U11B)	2025-08-02	2025-08-02	Rapid	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
2	Benoni Primary School Cluster 12 April 2025 (U11 Open)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
3	LS Northmead Trials 2025 (U11)	2025-01-25	2025-01-25	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Benoni Primary School Cluster Teams 2025 (U11B)	2025-08-02	2025-08-02	Rapid	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
2	Benoni Primary School Cluster 12 April 2025 (U11 Open)	2025-04-12	2025-04-12	Standard	Ekurhuleni (GE)	5	5	3.5	Yes	Analysis
3	LS Northmead Trials 2025 (U11)	2025-01-25	2025-01-25	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
4	Gauteng Top Schools 2024 (U9 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
5	Ekurhuleni North Schools Finals - Teams 2024 (U9 Open)	2024-08-03	2024-08-03	Standard	Ekurhuleni (GE)	5	3	1	Yes	Analysis
6	Ekurhuleni North Primary Schools District Individual Finals 2024 (U9 Boys)	2024-05-11	2024-05-11	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
7	Benoni Primary School Cluster Individuals 2024 (U9 Boys)	2024-03-09	2024-03-09	Rapid	Ekurhuleni (GE)	5	5	3	Yes	Analysis
8	Laerskool Northmead Proewe 2024 (U9)	2024-02-10	2024-02-10	Rapid	Ekurhuleni (GE)	5	5	4	Yes	Analysis

#	Games	Start				End
1	5	Tournament Benoni Primary School Cluster 12 April 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-04-12	rnd 5	type Standard	result 0.5
		Opponent De Bruin, E (EJ)				Opponent Pretorius, R (Ronan Neo)
2	4	Tournament Gauteng Top Schools 2024				Tournament LS Northmead Trials 2025
		date 2024-10-04	rnd 5	type Standard	result 1	date 2025-01-25	rnd 3	type Rapid	result 1
		Opponent De Plessis, A (Anushka)				Opponent Steyn, J (Janco)
3	4	Tournament Laerskool Northmead Proewe 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Terblanche, W (Wouter)				Opponent Saunders, J (Jaiden)

#	Games	Start				End
1	6	Tournament Gauteng Top Schools 2024				Tournament Benoni Primary School Cluster 12 April 2025
		date 2024-10-04	rnd 5	type Standard	result 1	date 2025-04-12	rnd 5	type Standard	result 0.5
		Opponent De Plessis, A (Anushka)				Opponent Pretorius, R (Ronan Neo)
2	3	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-10-04	rnd 2	type Standard	result 1
		Opponent Ncube, N (Nolwazi)				Opponent Alene, C (Christian)
3	3	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Ekurhuleni North Primary Schools District Individual Finals 2024
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Mkhwanazi, B (Boipelo)				Opponent Botha, D (Dillen)

#	Games	Start				End
1	4	Tournament Laerskool Northmead Proewe 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Terblanche, W (Wouter)				Opponent Saunders, J (Jaiden)
2	3	Tournament LS Northmead Trials 2025				Tournament LS Northmead Trials 2025
		date 2025-01-25	rnd 1	type Rapid	result 1	date 2025-01-25	rnd 3	type Rapid	result 1
		Opponent Du Preez, M (Minka)				Opponent Steyn, J (Janco)
3	3	Tournament Laerskool Northmead Proewe 2024				Tournament Laerskool Northmead Proewe 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 3	type Rapid	result 1
		Opponent Smit, L (Liam)				Opponent Prins, K (Kobus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Gauteng Top Schools 2024				Tournament LS Northmead Trials 2025
		date 2024-10-04	rnd 5	type Standard	result 1	date 2025-01-25	rnd 3	type Rapid	result 1
		Opponent De Plessis, A (Anushka)				Opponent Steyn, J (Janco)
2	4	Tournament Laerskool Northmead Proewe 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Terblanche, W (Wouter)				Opponent Saunders, J (Jaiden)
3	3	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-10-04	rnd 2	type Standard	result 1
		Opponent Ncube, N (Nolwazi)				Opponent Alene, C (Christian)

#	Games	Start				End
1	3	Tournament Ekurhuleni North Schools Finals - Teams 2024				Tournament Gauteng Top Schools 2024
		date 2024-08-03	rnd 5	type Standard	result 1	date 2024-10-04	rnd 2	type Standard	result 1
		Opponent Ncube, N (Nolwazi)				Opponent Alene, C (Christian)
2	3	Tournament Ekurhuleni North Primary Schools District Individual Finals 2024				Tournament Ekurhuleni North Primary Schools District Individual Finals 2024
		date 2024-05-11	rnd 2	type Standard	result 1	date 2024-05-11	rnd 4	type Standard	result 1
		Opponent Mkhwanazi, B (Boipelo)				Opponent Botha, D (Dillen)
3	2	Tournament Benoni Primary School Cluster 12 April 2025				Tournament Benoni Primary School Cluster 12 April 2025
		date 2025-04-12	rnd 3	type Standard	result 1	date 2025-04-12	rnd 4	type Standard	result 1
		Opponent Botha, L (Louis)				Opponent Solan, J (Joshua)

#	Games	Start				End
1	4	Tournament Laerskool Northmead Proewe 2024				Tournament Benoni Primary School Cluster Individuals 2024
		date 2024-02-10	rnd 5	type Rapid	result 1	date 2024-03-09	rnd 3	type Rapid	result 1
		Opponent Terblanche, W (Wouter)				Opponent Saunders, J (Jaiden)
2	3	Tournament LS Northmead Trials 2025				Tournament LS Northmead Trials 2025
		date 2025-01-25	rnd 1	type Rapid	result 1	date 2025-01-25	rnd 3	type Rapid	result 1
		Opponent Du Preez, M (Minka)				Opponent Steyn, J (Janco)
3	3	Tournament Laerskool Northmead Proewe 2024				Tournament Laerskool Northmead Proewe 2024
		date 2024-02-10	rnd 1	type Rapid	result 1	date 2024-02-10	rnd 3	type Rapid	result 1
		Opponent Smit, L (Liam)				Opponent Prins, K (Kobus)

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	Botha ,D (Dillen)	2	1	0	1	1	425	1	0	-425	0	0	0
1	Botha ,D (Dillen)	2	1216	1216	1	1172.6	1641	1	1200	791	0	0	0
2	Van Rensburg ,J (Janru)	2	0	-425	1	0	-425	1	0	-425	0	0	0
2	Van Rensburg ,J (Janru)	2	1249.6	824.6	1	1207.2	824.6	1	1255.4	824.6	0	0	0
3	Westermann ,Z (Zelri)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Westermann ,Z (Zelri)	1	1151.2	726.2	1	1147.9	726.2	0	0	0	0	0	0
4	Mkhwanazi ,B (Boipelo)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mkhwanazi ,B (Boipelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Beaton ,M (Mekhl)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Beaton ,M (Mekhl)	1	1220.7	795.7	1	1223.2	795.7	0	0	0	0	0	0
6	Pretorius ,R (Ronan Neo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
6	Pretorius ,R (Ronan Neo)	1	1150.6	1150.6	1	1139.6	1150.6	0	0	0	0	0	0
7	Alene ,C (Christian)	1	1	425	1	1	425	0	0	0	0	0	0
7	Alene ,C (Christian)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
8	Solan ,J (Joshua)	1	1	425	1	1	425	0	0	0	0	0	0
8	Solan ,J (Joshua)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Smith ,D (Deone)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Smith ,D (Deone)	1	1280.9	855.9	1	1232	855.9	0	0	0	0	0	0
10	Coetzee ,S (Stian)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Coetzee ,S (Stian)	1	1200	1200	1	1200	1200	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

Coetzee, O (Oliver)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms