Chess South Africa Ratings Database

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Personal

Pieterse, R (Ronan)

Chess SA id

1060108574

FIDE id

Date of birth

2006-11-08 (U20)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-08-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1320.4	1320.5	1070	1173.6
Raw rating	1320.4	1320.5	1070	1173.6
Weighted rating	1318.2	1318.7	1070	1173.6
Weighted performance	1114	1107.4	630.8	0
Floor	845.1	840.8	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	139.7	139.7	199.6	172.2
Highest rating	1359 2020-03-01	1355.2 2020-03-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1345.1 2021-11-01	1340.8 2020-04-01	1200 2019-12-01	1200 2019-12-01
Highest weighted rating	1345.1 2022-01-01	1340.8 2022-01-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1359 2020-03-01	1355.2 2020-03-01	1200 2019-12-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1320.4	1320.5	1070	1173.6
Analysis
Rating	1320.4	1320.5	1070	1173.6
Raw rating	1320.4	1320.5	1070	1173.6
Weighted rating	1318.2	1318.7	1070
Weighted performance	1114	1107.4	630.8
K-factor	36	36	36	36
Floor	845.1	840.8	700	700
Max/Min rating change allowed	139.7	139.7	199.6	172.2
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	1320.4	1320.5	1070	1173.6
New weighted rating	1318.7	1319.2	1070	1173.6
New weighted performance	1112.6	1106	629.8	0
Temp new rating	1320.4	1320.5	1070	1173.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1320.4	1320.5	1070	1173.6
New K-factor	36	36	36	36
New floor	845.1	840.8	700	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	20	20	0	0
	26	26	0	0
	46	18	22	6
	10	5	5	0
History	176	143	27	6

Games since
	Main 25	Standard 25		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	176	100.5	57.1	60.4	1229.5	1289.9
Standard	143	85.5	59.79	83.2	1216.3	1299.5
Rapid	27	12.5	46.3	-31.5	1262.6	1231.1
Blitz	6	2.5	41.67	-70.8	1396.1	1325.3

Date	Main	Standard	Rapid	Blitz
2025-09-30	1320.4	1320.5	1070	1173.6
2025-09-01	1320.4	1320.5	1070	1173.6
2025-08-01	1320.4	1320.5	1070	1173.6
2025-07-01	1320.4	1320.5	1070	1173.6
2025-06-01	1320.4	1320.5	1070	1173.6
2025-05-01	1320.4	1320.5	1070	1173.6
2025-04-01	1320.4	1320.5	1070	1173.6
2025-03-01	1320.4	1320.5	1070	1173.6
2025-02-01	1320.4	1320.5	1070	1173.6
2025-01-01	1320.4	1320.5	1070	1173.6
2024-12-01	1320.4	1320.5	1070	1173.6
2024-11-01	1320.4	1320.5	1070	1173.6
2024-10-01	1320.4	1320.5	1070	1173.6
2024-09-01	1320.4	1320.5	1070	1173.6
2024-08-01	1311.4	1314	1070	1173.6
2024-07-01	1311.4	1314	1070	1173.6
2024-06-01	1311.4	1314	1070	1173.6
2024-08-01	1311.4	1314	1070	1173.6
2024-04-01	1311.4	1314	1070	1173.6
2024-03-01	1317.4	1320.8	1070	1173.6
2024-02-01	1291.7	1292.4	1070	1173.6
2024-01-01	1289.6	1293.1	1070	1173.6
2023-12-01	1289.6	1293.1	1070	1173.6
2023-11-01	1289.6	1293.1	1070	1173.6

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	Eden Top Schools 2024 (U18 Open)	2024-08-17	2024-08-17	Standard	Eden (WEG)	5	5	2	Yes	Analysis
2	Eden School Chess Trials 1 2024 (U18 Boys)	2024-03-09	2024-03-09	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
3	Hessequa Skole Proewe 2 2024 (U18 Boys)	2024-02-03	2024-02-03	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
4	Hessequa Proewe 1 2024 (U18 Boys)	2024-01-27	2024-01-27	Standard	Eden (WEG)	5	5	3	Yes	Analysis
5	Western Cape Club Championships 2023 (Tier 2)	2023-10-21	2023-10-22	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
6	Eden Trials 2+3 2023 (U18)	2023-04-15	2023-05-13	Standard	Eden (WEG)	10	6	2.5	Yes	Analysis
7	Eden Trails 1 2023 (U17 Boys)	2023-03-11	2023-03-11	Standard	Eden (WEG)	5	5	2	Yes	Analysis
8	Hessequa Proewe 2 2023 (O17 Seuns)	2023-02-11	2023-02-11	Standard	Eden (WEG)	5	5	4	Yes	Analysis
9	Hessequa Proewe 1 2023 (O17 Seuns)	2023-01-28	2023-01-28	Standard	Eden (WEG)	5	5	3	Yes	Analysis
10	VGK 2022 (Rapid Open)	2022-11-12	2022-11-12	Rapid	Eden (WEG)	6	6	2.5	Yes	Analysis
11	VGK 2022 (Blitz)	2022-11-12	2022-11-12	Blitz	Eden (WEG)	6	6	2.5	Yes	Analysis
12	Hessequa Ontwikkeling 2022 (Hoerskole)	2022-10-22	2022-10-22	Rapid	Eden (WEG)	5	5	2.5	Yes	Analysis
13	Albertinia Chess Club Closed 1 2022 (Open)	2022-09-10	2022-09-10	Rapid	Eden (WEG)	6	6	4	Yes	Analysis
14	Eden Topskole 2022 (O18 Ope)	2022-08-13	2022-08-13	Standard	Eden (WEG)	5	3	2	Yes	Analysis
15	Knysna Oyster Festival Rapid Chess 2022 (A)	2022-07-02	2022-07-02	Rapid	Eden (WEG)	5	5	1	Yes	Analysis
16	Eden Proewe 2 2022 (O18 Seuns)	2022-04-09	2022-04-09	Standard	Eden (WEG)	5	5	2.5	Yes	Analysis
17	Eden Proewe 1 2022 (O18 Seuns)	2022-03-12	2022-03-12	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
18	Hessequa Proewe 1 2022 (O18 Seuns)	2022-01-29	2022-01-29	Standard	Eden (WEG)	5	5	3	Yes	Analysis
19	Western Cape Club Championships 2021 (C)	2021-10-15	2021-10-17	Standard	Eden (WEG)	5	5	3	Yes	Analysis
20	Eden Proewe 2021 (O15 Seuns)	2021-10-15	2021-10-15	Rapid	Eden (WEG)	5	5	2.5	Yes	Analysis
21	Western Cape Schools 2020 (U15 Boys)	2020-03-14	2020-03-15	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
22	Eden Schools Closed Trials 1 2020 (U15 Boys)	2020-03-07	2020-03-07	Standard	Eden (WEG)	5	5	4	Yes	Analysis
23	Hessequa Skaak Proewe 2 2020 (O15 Seuns)	2020-02-22	2020-02-22	Standard	Eden (WEG)	5	5	3	Yes	Analysis
24	Hessequa Skaak Proewe 1 2020 (O15 Seuns)	2020-02-01	2020-02-01	Standard	Eden (WEG)	5	5	3	Yes	Analysis
25	2019 South African Junior Team Championships (U14B)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
26	Hessequa Ontwikkelings Toernooi 2019 (B)	2019-11-01	2019-11-01	Standard	Eden (WEG)	6	6	6	Yes	Analysis
27	Eden Top Schools 2019 (U13)	2019-07-20	2019-07-20	Standard	Eden (WEG)	5	5	2	Yes	Analysis
28	Eden Trials 3 2019 (U14 Open)	2019-05-11	2019-05-11	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
29	Western Cape Schools Individuals 2019 (U13 Boys)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	2.5	Yes	Analysis
30	Eden Trials 2 2019 (U14 Open)	2019-04-13	2019-04-13	Standard	Eden (WEG)	5	5	3	Yes	Analysis
31	Eden Trials 1 2019 (U14 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	5	4	Yes	Analysis
32	Hessequa Proewe 3 2019 (O14)	2019-02-23	2019-02-23	Standard	Eden (WEG)	5	5	2	Yes	Analysis
33	Hessequa Proewe 2 2019 (O14)	2019-02-16	2019-02-16	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
34	Hessequa Proewe 1 2019 (O14)	2019-01-26	2019-01-26	Standard	Eden (WEG)	5	5	4	Yes	Analysis

#	Games	Start				End
1	7	Tournament Eden Top Schools 2019				Tournament Hessequa Ontwikkelings Toernooi 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-11-01	rnd 6	type Standard	result 1
		Opponent Burgess, J (Jaydelan-Waytt)				Opponent Heynse, A (Armando)
2	6	Tournament Hessequa Proewe 1 2023				Tournament Hessequa Proewe 2 2023
		date 2023-01-28	rnd 5	type Standard	result 1	date 2023-02-11	rnd 5	type Standard	result 1
		Opponent Micheals, D (Dihogen)				Opponent Groenewald, C (Curlin)
3	5	Tournament Albertinia Chess Club Closed 1 2022				Tournament Hessequa Ontwikkeling 2022
		date 2022-09-10	rnd 4	type Rapid	result 1	date 2022-10-22	rnd 2	type Rapid	result 0.5
		Opponent Losper, S (Simone)				Opponent Hermanus, J (Jesse)

#	Games	Start				End
1	7	Tournament Eden Top Schools 2019				Tournament Hessequa Ontwikkelings Toernooi 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-11-01	rnd 6	type Standard	result 1
		Opponent Burgess, J (Jaydelan-Waytt)				Opponent Heynse, A (Armando)
2	6	Tournament Hessequa Proewe 1 2023				Tournament Hessequa Proewe 2 2023
		date 2023-01-28	rnd 5	type Standard	result 1	date 2023-02-11	rnd 5	type Standard	result 1
		Opponent Micheals, D (Dihogen)				Opponent Groenewald, C (Curlin)
3	5	Tournament Eden Topskole 2022				Tournament Hessequa Proewe 1 2023
		date 2022-08-13	rnd 4	type Standard	result 1	date 2023-01-28	rnd 3	type Standard	result 0.5
		Opponent Buis, H (Henley)				Opponent Pietersen, E (Enzalin)

#	Games	Start				End
1	5	Tournament Albertinia Chess Club Closed 1 2022				Tournament Hessequa Ontwikkeling 2022
		date 2022-09-10	rnd 4	type Rapid	result 1	date 2022-10-22	rnd 2	type Rapid	result 0.5
		Opponent Losper, S (Simone)				Opponent Hermanus, J (Jesse)
2	3	Tournament VGK 2022				Tournament VGK 2022
		date 2022-11-12	rnd 3	type Rapid	result 1	date 2022-11-12	rnd 5	type Rapid	result 1
		Opponent Kenzenie, A (Adrian)				Opponent Michaels, D (Digohen)
3	2	Tournament Eden Proewe 2021				Tournament Eden Proewe 2021
		date 2021-10-15	rnd 1	type Rapid	result 0.5	date 2021-10-15	rnd 2	type Rapid	result 1
		Opponent Daniels, R (Reuben)				Opponent Valentine, J (Jaden)

#	Games	Start				End
1	2	Tournament VGK 2022				Tournament VGK 2022
		date 2022-11-12	rnd 2	type Blitz	result 1	date 2022-11-12	rnd 3	type Blitz	result 1
		Opponent Petersen, B (Brionay)				Opponent Jansen, G (Giovante)
2	1	Tournament VGK 2022				Tournament VGK 2022
		date 2022-11-12	rnd 5	type Blitz	result 0.5	date 2022-11-12	rnd 5	type Blitz	result 0.5
		Opponent Nomdo, M (Monique)				Opponent Nomdo, M (Monique)

#	Games	Start				End
1	7	Tournament Eden Top Schools 2019				Tournament Hessequa Ontwikkelings Toernooi 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-11-01	rnd 6	type Standard	result 1
		Opponent Burgess, J (Jaydelan-Waytt)				Opponent Heynse, A (Armando)
2	4	Tournament Albertinia Chess Club Closed 1 2022				Tournament Hessequa Ontwikkeling 2022
		date 2022-09-10	rnd 4	type Rapid	result 1	date 2022-10-22	rnd 1	type Rapid	result 1
		Opponent Losper, S (Simone)				Opponent Daries, N (Nikita)
3	3	Tournament Eden Trails 1 2023				Tournament Eden Trials 2+3 2023
		date 2023-03-11	rnd 5	type Standard	result 1	date 2023-04-15	rnd 2	type Standard	result 1
		Opponent Wheymann, L (Laurenzo)				Opponent Jacobs, P (Pernell)

#	Games	Start				End
1	7	Tournament Eden Top Schools 2019				Tournament Hessequa Ontwikkelings Toernooi 2019
		date 2019-07-20	rnd 5	type Standard	result 1	date 2019-11-01	rnd 6	type Standard	result 1
		Opponent Burgess, J (Jaydelan-Waytt)				Opponent Heynse, A (Armando)
2	3	Tournament Eden Trails 1 2023				Tournament Eden Trials 2+3 2023
		date 2023-03-11	rnd 5	type Standard	result 1	date 2023-04-15	rnd 2	type Standard	result 1
		Opponent Wheymann, L (Laurenzo)				Opponent Jacobs, P (Pernell)
3	3	Tournament Eden Topskole 2022				Tournament Hessequa Proewe 1 2023
		date 2022-08-13	rnd 4	type Standard	result 1	date 2023-01-28	rnd 1	type Standard	result 1
		Opponent Buis, H (Henley)				Opponent Kiewiet, R (Rozaylin)

#	Games	Start				End
1	4	Tournament Albertinia Chess Club Closed 1 2022				Tournament Hessequa Ontwikkeling 2022
		date 2022-09-10	rnd 4	type Rapid	result 1	date 2022-10-22	rnd 1	type Rapid	result 1
		Opponent Losper, S (Simone)				Opponent Daries, N (Nikita)
2	1	Tournament VGK 2022				Tournament VGK 2022
		date 2022-11-12	rnd 5	type Rapid	result 1	date 2022-11-12	rnd 5	type Rapid	result 1
		Opponent Michaels, D (Digohen)				Opponent Michaels, D (Digohen)
3	1	Tournament VGK 2022				Tournament VGK 2022
		date 2022-11-12	rnd 3	type Rapid	result 1	date 2022-11-12	rnd 3	type Rapid	result 1
		Opponent Kenzenie, A (Adrian)				Opponent Kenzenie, A (Adrian)

#	Games	Start				End
1	2	Tournament VGK 2022				Tournament VGK 2022
		date 2022-11-12	rnd 2	type Blitz	result 1	date 2022-11-12	rnd 3	type Blitz	result 1
		Opponent Petersen, B (Brionay)				Opponent Jansen, G (Giovante)

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	Pietersen ,E (Enzalin)	8	3.5	-53.1	6	3	0	2	0.5	-212.5	0	0	0
1	Pietersen ,E (Enzalin)	8	1257.4	1204.3	6	1234.6	1257.4	2	1240.4	1044.9	0	0	0
2	Manho ,L (Leancon)	5	0	-425	4	0	-425	1	0	-425	0	0	0
2	Manho ,L (Leancon)	5	1431	1006	4	1417.3	1006	1	1235.2	1006	0	0	0
3	Sefoor ,J (Jordan)	4	2	0	4	2	0	0	0	0	0	0	0
3	Sefoor ,J (Jordan)	4	1224.8	1224.8	4	1212.9	1224.8	0	0	0	0	0	0
4	Groenewald ,C (Curlin)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
4	Groenewald ,C (Curlin)	4	1193.9	1300.1	4	1183.3	1300.1	0	0	0	0	0	0
5	Sefoor ,F (Fayden)	3	2.5	283.3	3	2.5	283.3	0	0	0	0	0	0
5	Sefoor ,F (Fayden)	3	1124.2	1407.5	3	1114	1407.5	0	0	0	0	0	0
6	Campher ,L (Luwiaan)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
6	Campher ,L (Luwiaan)	3	1196.4	1338	3	1196.8	1338	0	0	0	0	0	0
7	Valentine ,J (Jaden)	3	1.5	0	1	0	-425	2	1.5	212.5	0	0	0
7	Valentine ,J (Jaden)	3	1326.4	1326.4	1	1255.6	901.4	2	791.6	1538.9	0	0	0
8	Jacobs ,P (Pernell)	2	1	0	2	1	0	0	0	0	0	0	0
8	Jacobs ,P (Pernell)	2	1434.7	1434.7	2	1439.2	1434.7	0	0	0	0	0	0
9	Andrews ,K (Kaylin)	2	2	425	2	2	425	0	0	0	0	0	0
9	Andrews ,K (Kaylin)	2	1105.4	1530.4	2	1110.2	1530.4	0	0	0	0	0	0
10	Micheals ,D (Dihogen)	2	1	0	2	1	0	0	0	0	0	0	0
10	Micheals ,D (Dihogen)	2	1137.4	1137.4	2	1125.6	1137.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Pieterse, R (Ronan)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms