Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzer, R (Rossouw)

Chess SA id

1170159267

FIDE id

Date of birth

2017-02-01 (U10)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-10-26

Personal details last changed

1900-01-01

Junior GPX Games

63.7

Junior GPX Points

1200.9

Item	Main	Standard	Rapid	Blitz
Rating	1399.8	1360.7	1424.4	1298.5
Raw rating	1381.6	1339.2	1424.4	1298.5
Weighted rating	1399.8	1360.7	1396.9	1248.3
Weighted performance	1267.7	1244.5	1340.9	0
Floor	971.5	948.9	1014.7	798.5
K-factor	32	32	32	36
Min/Max rating change allowed	128	136	120.4	144.1
Highest rating	1471.5 2025-04-01	1513.9 2024-05-01	1514.7 2025-03-01	1298.5 2025-05-05
Highest raw rating	1471.5 2025-04-01	1448.9 2024-11-01	1514.7 2025-03-01	1298.5 2025-05-05
Highest weighted rating	1399.8 2025-11-01	1360.7 2025-11-01	1390.1 2025-09-30	1229.5 2025-08-01
Highest weighted performance	1471.4 2025-04-01	1513.9 2024-05-01	1514.7 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	1	0.2	0	0
New rating	1400.8	1360.9	1424.4	1298.5
Analysis
Rating	1399.8	1360.7	1424.4	1298.5
Raw rating	1381.6	1339.2	1424.4	1298.5
Weighted rating	1399.8	1360.7	1396.9
Weighted performance	1267.7	1244.5	1340.9
K-factor	32	32	32	36
Floor	971.5	948.9	1014.7	798.5
Max/Min rating change allowed	128	136	120.4	144.1
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	1381.6	1339.2	1424.4	1298.5
New weighted rating	1400.8	1360.9	1403	1253.8
New weighted performance	1260.1	1236.9	1332.7	0
Temp new rating	1400.8	1360.9	1424.4	1298.5
Temp new rating +/-	1	0.2	0	0
Final new rating +/-	1	0.2	0	0
New rating	1400.8	1360.9	1424.4	1298.5
New K-factor	32	32	32	36
New floor	971.5	948.9	1014.7	798.5

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	83	24	48	11
	68	48	20	0
	5	5	0	0
	0	0	0	0
	0	0	0	0
History	156	77	68	11

Games since
	Main 151	Standard 72		Rapid 68		Blitz 11
Gender	Male
Age group	U10
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2179		680		34
Male	1779		538		25
U10	142		35		5
U10 Male	124		28		5
Standard
	RSA		Province		Region
Overall	2525		717		36
Male	2027		544		27
U10	192		48		5
U10 Male	159		35		5
Rapid
	RSA		Province		Region
Overall	429		209		16
Male	374		181		14
U10	21		11		2
U10 Male	17		8		2
Blitz
	RSA		Province		Region
Overall	288		120		3
Male	272		115		3
U10	2		1		1
U10 Male	2		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	83	49	59.04	76.8	1353.6	1430.4
Standard	24	12.5	52.08	17.7	1341.3	1359.1
Rapid	48	31.5	65.62	132.8	1331.9	1464.7
Blitz	11	5	45.45	-38.6	1474.7	1436.1
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	156	99.5	63.78	117.1	1301.5	1418.7
Standard	77	48.5	62.99	110.4	1278.8	1389.2
Rapid	68	46	67.65	150	1299.2	1449.2
Blitz	11	5	45.45	-38.6	1474.7	1436.1

Date	Main	Standard	Rapid	Blitz
2025-11-01	1381.6	1339.2	1424.4	1298.5
2025-09-30	1407.9	1369.6	1424.4	1298.5
2025-09-01	1406.5	1369.6	1432.1	1298.5
2025-08-01	1406.5	1369.6	1432.1	1298.5
2025-07-01	1418.5	1369.6	1467.1	1298.5
2025-06-01	1418.5	1369.6	1467.1	1298.5
2025-05-01	1386.6	1343.6	1462.5	1298.5
2025-04-01	1471.5	1381.9	1514.7	1200
2025-03-01	1468.5	1373.4	1514.7	1200
2025-02-01	1377.1	1373.4	1330	1200
2025-01-01	1377.1	1373.4	1330	1200
2024-12-01	1381.9	1378.5	1330	1200
2024-11-01	1440.3	1448.9	1330	1200
2024-10-01	1406	1380.4	1330	1200
2024-09-01	1401.7	1343.3	1317	1200
2024-08-01	1401.7	1343.3	1317	1200
2024-07-01	1429.3	1375.3	1317	1200
2024-09-01	1422	1375.3	1281.4	1200
2024-05-01	1304.3	1269.8	1281.4	1200
2024-04-01	1304.3	1269.8	1281.4	1200
2024-03-01	1210.6	1218	1192.8	1200
2024-02-01	1210.6	1218	1192.8	1200
2024-01-01	1215.2	1218	1200	1200
2023-12-01	1215.2	1218	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	Western Cape Club Championship 2025 (C)	2025-10-25	2025-10-26	Standard	Overberg (WOS)	5	4	1.5	Yes	Analysis
2	Kingsway Chess Open 2025 (U8)	2025-09-20	2025-09-20	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
3	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
5	Brave Knights Rapid 2025 (U9)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Blitz)	2025-04-16	2025-04-17	Blitz	Geece (GRE)	11	11	5	Yes	Analysis
7	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid)	2025-04-13	2025-04-15	Rapid	Greece (GRE)	11	11	4	Yes	Analysis
8	South African Junior Closed Chess Championships 2025 (U8 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	3.5	Yes	Analysis
9	Overberg Schools - PS Closed 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
10	Overberg Schools - PS Trials (Region 1) 2025 (U9 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
11	Curro Hermanus Summer Open 2025 (U9)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
12	Overberg Schools & Federation Open 2025 (U9)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	5.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Western Cape Club Championship 2025 (C)	2025-10-25	2025-10-26	Standard	Overberg (WOS)	5	4	1.5	Yes	Analysis
2	Kingsway Chess Open 2025 (U8)	2025-09-20	2025-09-20	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
3	4th Curro Durbanville Rapid Open 2025 (Intermediate)	2025-07-19	2025-07-19	Rapid	Cape Town (WCT)	7	7	4	Yes	Analysis
4	Western Cape Schools Individual Championship 2025 (U9 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	4	Yes	Analysis
5	Brave Knights Rapid 2025 (U9)	2025-05-03	2025-05-03	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Blitz)	2025-04-16	2025-04-17	Blitz	Geece (GRE)	11	11	5	Yes	Analysis
7	FIDE World Cadet & Youth Rapid & Blitz Championships 2025 (Rapid)	2025-04-13	2025-04-15	Rapid	Greece (GRE)	11	11	4	Yes	Analysis
8	South African Junior Closed Chess Championships 2025 (U8 Open)	2025-03-31	2025-04-05	Standard	Cape Winelands (WCW)	9	9	3.5	Yes	Analysis
9	Overberg Schools - PS Closed 2025 (U9 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
10	Overberg Schools - PS Trials (Region 1) 2025 (U9 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
11	Curro Hermanus Summer Open 2025 (U9)	2025-02-08	2025-02-08	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
12	Overberg Schools & Federation Open 2025 (U9)	2025-02-01	2025-02-01	Rapid	Overberg (WOS)	6	6	5.5	Yes	Analysis
13	Mzansi Interprovincial Youth Chess Championships 2024 (U8 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	3.5	Yes	Analysis
14	Helderberg Chess Club Open 2024 (B)	2024-11-09	2024-11-10	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
15	Strategema Chess October 2024 (U7)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	5	Yes	Analysis
16	Overberg GP Invitational Day 2 2024 (C)	2024-09-27	2024-09-27	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
17	Overberg GP Invitational Day 1 2024 (C)	2024-09-26	2024-09-26	Standard	Overberg (WOS)	5	5	3.5	Yes	Analysis
18	Kleinmond Chess Club Open 2024 (U10)	2024-09-07	2024-09-07	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
19	Western Cape Top Schools Championship 2024 (U7 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	5	4	3	Yes	Analysis
20	Overberg Schools - Top Schools 2024 (U7+U9 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	2.5	Yes	Analysis
21	Western Cape - Kings and Queens 2024 (Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	5	4	3.5	Yes	Analysis
22	Western Cape PS Individuals Championship 2024 (U7 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	6	Yes	Analysis
23	Overberg Schools - PS Closed 2024 (U7 Mixed)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
24	Overberg Schools - PS Trials Region 3 2024 (U7 Mixed)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	5	Yes	Analysis
25	Overberg Open Rapid 2024 (U7+U9)	2024-01-27	2024-01-27	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
26	Overberg Top Schools 2023 (U7+U9)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	13	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-03-16	rnd 4	type Standard	result 1	date 2024-07-27	rnd 1	type Standard	result 0.5
		Opponent Henning, A (Alex)				Opponent Lingenfelder, S (Stephanus)
2	10	Tournament Overberg Schools & Federation Open 2025				Tournament Curro Hermanus Summer Open 2025
		date 2025-02-01	rnd 1	type Rapid	result 1	date 2025-02-08	rnd 4	type Rapid	result 1
		Opponent Grobbelaar, M (Marlo)				Opponent Crafford, Q (Quade)
3	8	Tournament Overberg GP Invitational Day 2 2024				Tournament Strategema Chess October 2024
		date 2024-09-27	rnd 3	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Fourie, C (Cj)				Opponent Edons, E (Elijah)

#	Games	Start				End
1	9	Tournament Overberg Schools - PS Closed 2024				Tournament Overberg Schools - Top Schools 2024
		date 2024-03-16	rnd 4	type Standard	result 1	date 2024-07-27	rnd 1	type Standard	result 0.5
		Opponent Henning, A (Alex)				Opponent Lingenfelder, S (Stephanus)
2	8	Tournament Overberg GP Invitational Day 2 2024				Tournament Strategema Chess October 2024
		date 2024-09-27	rnd 3	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Fourie, C (Cj)				Opponent Edons, E (Elijah)
3	6	Tournament Helderberg Chess Club Open 2024				Tournament Mzansi Interprovincial Youth Chess Championships 2024
		date 2024-11-10	rnd 5	type Standard	result 1	date 2024-12-17	rnd 4	type Standard	result 0.5
		Opponent Jansen Van Rensburg, RE (Rylee Edward)				Opponent Arries, T (Tristan)

#	Games	Start				End
1	13	Tournament Overberg Open Rapid 2024				Tournament Kleinmond Chess Club Open 2024
		date 2024-01-27	rnd 5	type Rapid	result 1	date 2024-09-07	rnd 3	type Rapid	result 1
		Opponent Mackenzie, T (Tylo)				Opponent Scholtz, M (Miche)
2	11	Tournament Kleinmond Chess Club Open 2024				Tournament Curro Hermanus Summer Open 2025
		date 2024-09-07	rnd 6	type Rapid	result 1	date 2025-02-08	rnd 4	type Rapid	result 1
		Opponent Tshota, E (Enkosi)				Opponent Crafford, Q (Quade)
3	5	Tournament Curro Hermanus Summer Open 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-08	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Louw, S (Sarel Johannes)				Opponent Faasen, C (Charles)

#	Games	Start				End
1	3	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-17	rnd 8	type Blitz	result 1	date 2025-04-17	rnd 10	type Blitz	result 1
		Opponent Rens, Beauwin				Opponent Ramonyai, Mbhekeni
2	1	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-16	rnd 6	type Blitz	result 1	date 2025-04-16	rnd 6	type Blitz	result 1
		Opponent Ermekov, Khan				Opponent Ermekov, Khan
3	1	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-16	rnd 3	type Blitz	result 1	date 2025-04-16	rnd 3	type Blitz	result 1
		Opponent Margies, Odysseas				Opponent Margies, Odysseas

#	Games	Start				End
1	8	Tournament Overberg Schools - PS Closed 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-03-16	rnd 4	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Henning, A (Alex)				Opponent Van Der Merwe, F (Finley)
2	8	Tournament Overberg Open Rapid 2024				Tournament Overberg Schools - PS Closed 2024
		date 2024-01-27	rnd 5	type Rapid	result 1	date 2024-03-16	rnd 2	type Standard	result 1
		Opponent Mackenzie, T (Tylo)				Opponent Oosthuizen, J (Joshua)
3	5	Tournament Curro Hermanus Summer Open 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-08	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 4	type Rapid	result 1
		Opponent Louw, S (Sarel Johannes)				Opponent Faasen, C (Charles)

#	Games	Start				End
1	8	Tournament Overberg Schools - PS Closed 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-03-16	rnd 4	type Standard	result 1	date 2024-05-05	rnd 6	type Standard	result 1
		Opponent Henning, A (Alex)				Opponent Van Der Merwe, F (Finley)
2	5	Tournament Strategema Chess October 2024				Tournament Strategema Chess October 2024
		date 2024-10-05	rnd 1	type Standard	result 1	date 2024-10-05	rnd 5	type Standard	result 1
		Opponent Llopis Thomas, M (Matisse)				Opponent Edons, E (Elijah)
3	4	Tournament Helderberg Chess Club Open 2024				Tournament Mzansi Interprovincial Youth Chess Championships 2024
		date 2024-11-10	rnd 5	type Standard	result 1	date 2024-12-16	rnd 2	type Standard	result 1
		Opponent Jansen Van Rensburg, RE (Rylee Edward)				Opponent Van Der Merwe, F (Finley)

#	Games	Start				End
1	6	Tournament Kleinmond Chess Club Open 2024				Tournament Overberg Schools & Federation Open 2025
		date 2024-09-07	rnd 6	type Rapid	result 1	date 2025-02-01	rnd 5	type Rapid	result 1
		Opponent Tshota, E (Enkosi)				Opponent Badenhorst, R (Rouxan)
2	6	Tournament Western Cape - Kings and Queens 2024				Tournament Kleinmond Chess Club Open 2024
		date 2024-06-08	rnd 3	type Rapid	result 1	date 2024-09-07	rnd 3	type Rapid	result 1
		Opponent Niemand, J (Jano)				Opponent Scholtz, M (Miche)
3	6	Tournament Overberg Open Rapid 2024				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2024-01-27	rnd 5	type Rapid	result 1	date 2024-03-02	rnd 5	type Rapid	result 1
		Opponent Mackenzie, T (Tylo)				Opponent Avenant, J (Jone)

#	Games	Start				End
1	3	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-17	rnd 8	type Blitz	result 1	date 2025-04-17	rnd 10	type Blitz	result 1
		Opponent Rens, Beauwin				Opponent Ramonyai, Mbhekeni
2	1	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-16	rnd 6	type Blitz	result 1	date 2025-04-16	rnd 6	type Blitz	result 1
		Opponent Ermekov, Khan				Opponent Ermekov, Khan
3	1	Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025				Tournament FIDE World Cadet & Youth Rapid & Blitz Championships 2025
		date 2025-04-16	rnd 3	type Blitz	result 1	date 2025-04-16	rnd 3	type Blitz	result 1
		Opponent Margies, Odysseas				Opponent Margies, Odysseas

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	Louw ,S (Sarel Johannes)	9	7	236.1	6	4	141.7	3	3	425	0	0	0
1	Louw ,S (Sarel Johannes)	9	1222.2	1458.4	6	1220.2	1363.9	3	1198.3	1647.2	0	0	0
2	Badenhorst ,R (Rouxan)	7	2	-182.1	2	0	-425	5	2	-85	0	0	0
2	Badenhorst ,R (Rouxan)	7	1478.1	1295.9	2	1376.4	1053.1	5	1482.2	1393.1	0	0	0
3	Lourens ,L (Lihan)	5	4	255	3	2	141.7	2	2	425	0	0	0
3	Lourens ,L (Lihan)	5	1283.4	1538.4	3	1288	1425.1	2	1263.4	1708.4	0	0	0
4	Lingenfelder ,S (Stephanus)	4	2.5	106.2	1	0.5	0	3	2	141.7	0	0	0
4	Lingenfelder ,S (Stephanus)	4	1284.2	1390.4	1	1255	1284.2	3	1332.7	1425.8	0	0	0
5	Van Der Merwe ,F (Finley)	3	3	425	3	3	425	0	0	0	0	0	0
5	Van Der Merwe ,F (Finley)	3	1336.8	1761.8	3	1338.5	1761.8	0	0	0	0	0	0
6	Smit ,G (Gerrit)	3	3	425	2	2	425	1	1	425	0	0	0
6	Smit ,G (Gerrit)	3	1206.9	1631.9	2	1220.6	1631.9	1	1183.6	1631.9	0	0	0
7	Barnard ,H (Hendrik)	3	3	425	2	2	425	1	1	425	0	0	0
7	Barnard ,H (Hendrik)	3	1247.9	1672.9	2	1198.6	1672.9	1	1232.5	1672.9	0	0	0
8	Rens ,D (Deauwin)	3	2	141.7	2	1.5	212.5	1	0.5	0	0	0	0
8	Rens ,D (Deauwin)	3	1405.9	1547.6	2	1429.5	1618.4	1	1200	1405.9	0	0	0
9	Fourie ,C (Cj)	3	3	425	1	1	425	2	2	425	0	0	0
9	Fourie ,C (Cj)	3	1184	1609	1	1176.8	1609	2	1218.2	1609	0	0	0
10	Oosthuizen ,J (Josua)	3	3	425	1	1	425	2	2	425	0	0	0
10	Oosthuizen ,J (Josua)	3	1197.5	1622.5	1	1200	1622.5	2	1187.2	1622.5	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Coetzer, R (Rossouw)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms