Chess South Africa Ratings Database

PLAYER PAGE

Personal

Zwemstra, P (Pieter)

Chess SA id

1130160044

FIDE id

Date of birth

2013-03-25 (U14)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1433.5	1315.2	1380.5	1200
Raw rating	1433.5	1315.2	1380.5	1200
Weighted rating	1362.2	1300.2	1326.2	1200
Weighted performance	1386.3	0	0	0
Floor	933.5	815.2	880.5	700
K-factor	32	36	36	36
Min/Max rating change allowed	118.9	140.7	128.2	165.8
Highest rating	1506.1 2023-08-01	1451.5 2024-07-01	1627 2023-08-01	1200 2018-10-01
Highest raw rating	1433.5 2025-08-01	1315.2 2025-04-01	1380.5 2025-08-01	1200 2024-03-01
Highest weighted rating	1333.6 2025-08-01	1288.8 2025-08-01	1307.6 2025-08-01	1200 2018-10-01
Highest weighted performance	1506.1 2023-08-01	1451.5 2024-07-01	1627 2023-08-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1433.5	1315.2	1380.5	1200
Analysis
Rating	1433.5	1315.2	1380.5	1200
Raw rating	1433.5	1315.2	1380.5	1200
Weighted rating	1362.2	1300.2	1326.2
Weighted performance	1386.3	0	0
K-factor	32	36	36	36
Floor	933.5	815.2	880.5	700
Max/Min rating change allowed	118.9	140.7	128.2	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	1433.5	1315.2	1380.5	1200
New weighted rating	1370.4	1303.2	1331.8	1200
New weighted performance	1377.6	0	0	0
Temp new rating	1433.5	1315.2	1380.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1433.5	1315.2	1380.5	1200
New K-factor	32	36	36	36
New floor	933.5	815.2	880.5	700

Item	Main	Standard	Rapid
	0	0	0
	15	5	10
	14	14	0
	5	0	5
	0	0	0
	0	0	0
History	34	19	15

Games since
	Main 29	Standard 19		Rapid 10		Blitz 0
Gender	Male
Age group	U14
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	12	80	255	1296.1	1551.1
Standard	5	3	60	85	1267.9	1352.9
Rapid	10	9	90	340	1310.2	1650.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	34	26	76.47	225	1276.1	1501.1
Standard	19	12	63.16	111.8	1291.2	1403.1
Rapid	15	14	93.33	368.3	1257	1625.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1433.5	1315.2	1380.5	1200
2025-09-30	1433.5	1315.2	1380.5	1200
2025-09-01	1433.5	1315.2	1380.5	1200
2025-08-01	1433.5	1315.2	1380.5	1200
2025-07-01	1399.4	1315.2	1361.4	1200
2025-06-01	1399.4	1315.2	1361.4	1200
2025-05-01	1332.5	1315.2	1289.6	1200
2025-04-01	1332.5	1315.2	1289.6	1200
2025-03-01	1329.5	1306.6	1289.6	1200
2025-02-01	1329.5	1306.6	1289.6	1200
2025-01-01	1329.5	1306.6	1289.6	1200
2024-12-01	1329.5	1306.6	1289.6	1200
2024-11-01	1329.5	1306.6	1289.6	1200
2024-10-01	1329.5	1306.6	1289.6	1200
2024-09-01	1329.5	1306.6	1289.6	1200
2024-08-01	1307.2	1278.5	1289.6	1200
2024-07-01	1277.3	1236.4	1289.6	1200
2024-09-01	1277.3	1236.4	1289.6	1200
2024-05-01	1277.3	1236.4	1289.6	1200
2024-04-01	1256.7	1200	1289.6	1200
2024-03-01	1256.7	1200	1289.6	1200
2024-02-01	1256.7	1200	1289.6	1200
2024-01-01	1256.7	1200	1289.6	1200
2023-12-01	1256.7	1200	1289.6	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	Bojanala's Clash Of Schools -Primary Schools 2025 (U13)	2025-07-26	2025-07-26	Rapid	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
2	Kwaggasrus Rapids 2025 (Senior)	2025-05-17	2025-05-17	Rapid	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
3	Bojanala Circuit Championships 1 of 4 2025 (U14)	2025-03-01	2025-03-01	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Bojanala's Clash Of Schools -Primary Schools 2025 (U13)	2025-07-26	2025-07-26	Rapid	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
2	Kwaggasrus Rapids 2025 (Senior)	2025-05-17	2025-05-17	Rapid	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
3	Bojanala Circuit Championships 1 of 4 2025 (U14)	2025-03-01	2025-03-01	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
4	Bojanala's FIDE In The Sparkling Waters 2024 (Junior Champs)	2024-08-17	2024-08-17	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
5	Bojanala's Clash Of Schools 2024 (U11)	2024-07-20	2024-07-20	Standard	Bojanala Platina (NBR)	5	4	3	Yes	Analysis
6	Bojanala Olienpark's One For The Ages 2024 (Knights)	2024-04-20	2024-04-20	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
7	Bojanala School League 2023 (U11)	2023-08-19	2023-08-19	Rapid	Bojanala Platina (NBR)	5	5	5	Yes	Analysis

#	Games	Start				End
1	8	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Botes, M (Mine)				Opponent Nkwe, T (Tumalano)
2	6	Tournament Bojanala School League 2023				Tournament Bojanala Olienpark's One For The Ages 2024
		date 2023-08-19	rnd 1	type Rapid	result 1	date 2024-04-20	rnd 1	type Standard	result 1
		Opponent Opperman, L (Lihan)				Opponent Oosthuizen, Z (Zoey)
3	4	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's FIDE In The Sparkling Waters 2024
		date 2024-07-20	rnd 3	type Standard	result 1	date 2024-08-17	rnd 1	type Standard	result 1
		Opponent Terblanche, B (Bernard)				Opponent Kaboyaone, A (Amour Karl)

#	Games	Start				End
1	4	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's FIDE In The Sparkling Waters 2024
		date 2024-07-20	rnd 3	type Standard	result 1	date 2024-08-17	rnd 1	type Standard	result 1
		Opponent Terblanche, B (Bernard)				Opponent Kaboyaone, A (Amour Karl)
2	2	Tournament Bojanala's FIDE In The Sparkling Waters 2024				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2024-08-17	rnd 5	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Taperesu, K (Kaelyn Lynelle)				Opponent Norris, Z (Zacharias)
3	1	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-03-01	rnd 5	type Standard	result 1
		Opponent Botes, M (Mine)				Opponent Botes, M (Mine)

#	Games	Start				End
1	12	Tournament Bojanala School League 2023				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2023-08-19	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Opperman, L (Lihan)				Opponent Nkwe, T (Tumalano)
2	2	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 4	type Rapid	result 1	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Potgieter, R (Reinhardt)				Opponent Masebe, R (Rethabile)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Botes, M (Mine)				Opponent Nkwe, T (Tumalano)
2	6	Tournament Bojanala School League 2023				Tournament Bojanala Olienpark's One For The Ages 2024
		date 2023-08-19	rnd 1	type Rapid	result 1	date 2024-04-20	rnd 1	type Standard	result 1
		Opponent Opperman, L (Lihan)				Opponent Oosthuizen, Z (Zoey)
3	4	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's FIDE In The Sparkling Waters 2024
		date 2024-07-20	rnd 3	type Standard	result 1	date 2024-08-17	rnd 1	type Standard	result 1
		Opponent Terblanche, B (Bernard)				Opponent Kaboyaone, A (Amour Karl)

#	Games	Start				End
1	4	Tournament Bojanala's Clash Of Schools 2024				Tournament Bojanala's FIDE In The Sparkling Waters 2024
		date 2024-07-20	rnd 3	type Standard	result 1	date 2024-08-17	rnd 1	type Standard	result 1
		Opponent Terblanche, B (Bernard)				Opponent Kaboyaone, A (Amour Karl)
2	2	Tournament Bojanala's FIDE In The Sparkling Waters 2024				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2024-08-17	rnd 5	type Standard	result 1	date 2025-03-01	rnd 1	type Standard	result 1
		Opponent Taperesu, K (Kaelyn Lynelle)				Opponent Norris, Z (Zacharias)
3	1	Tournament Bojanala Circuit Championships 1 of 4 2025				Tournament Bojanala Circuit Championships 1 of 4 2025
		date 2025-03-01	rnd 5	type Standard	result 1	date 2025-03-01	rnd 5	type Standard	result 1
		Opponent Botes, M (Mine)				Opponent Botes, M (Mine)

#	Games	Start				End
1	12	Tournament Bojanala School League 2023				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2023-08-19	rnd 1	type Rapid	result 1	date 2025-07-26	rnd 2	type Rapid	result 1
		Opponent Opperman, L (Lihan)				Opponent Nkwe, T (Tumalano)
2	2	Tournament Bojanala's Clash Of Schools -Primary Schools 2025				Tournament Bojanala's Clash Of Schools -Primary Schools 2025
		date 2025-07-26	rnd 4	type Rapid	result 1	date 2025-07-26	rnd 5	type Rapid	result 1
		Opponent Potgieter, R (Reinhardt)				Opponent Masebe, R (Rethabile)

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	Terblanche ,B (Bernard)	2	2	425	2	2	425	0	0	0	0	0	0
1	Terblanche ,B (Bernard)	2	1222.2	1647.2	2	1218.9	1647.2	0	0	0	0	0	0
2	Botes ,M (Mine)	2	2	425	1	1	425	1	1	425	0	0	0
2	Botes ,M (Mine)	2	1276.4	1701.4	1	1268.7	1701.4	1	1113.9	1701.4	0	0	0
3	Taperesu ,K (Kaelyn Lynelle)	1	1	425	1	1	425	0	0	0	0	0	0
3	Taperesu ,K (Kaelyn Lynelle)	1	1228.2	1653.2	1	1223.5	1653.2	0	0	0	0	0	0
4	Oosthuizen ,Z (Zoey)	1	1	425	1	1	425	0	0	0	0	0	0
4	Oosthuizen ,Z (Zoey)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
5	Norris ,Z (Zacharias)	1	1	425	1	1	425	0	0	0	0	0	0
5	Norris ,Z (Zacharias)	1	1162.7	1587.7	1	1154.5	1587.7	0	0	0	0	0	0
6	Vosloo ,D (Des-Mari)	1	1	425	1	1	425	0	0	0	0	0	0
6	Vosloo ,D (Des-Mari)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Talane ,K (Kgosietsile Bokamoso)	1	1	425	1	1	425	0	0	0	0	0	0
7	Talane ,K (Kgosietsile Bokamoso)	1	1433.8	1858.8	1	1423.3	1858.8	0	0	0	0	0	0
8	Bezuidenhout ,D (Declan)	1	1	425	1	1	425	0	0	0	0	0	0
8	Bezuidenhout ,D (Declan)	1	1202.2	1627.2	1	1214.8	1627.2	0	0	0	0	0	0
9	Rossouw ,S (Shaun)	1	1	425	1	1	425	0	0	0	0	0	0
9	Rossouw ,S (Shaun)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Fourie ,K (Karla)	1	1	425	1	1	425	0	0	0	0	0	0
10	Fourie ,K (Karla)	1	1171.5	1596.5	1	1174.8	1596.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Zwemstra, P (Pieter)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms