Chess South Africa Ratings Database

PLAYER PAGE

Personal

Prins, S (Stefan)

Chess SA id

1100140763

FIDE id

Date of birth

2010-08-15 (U18)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1299.5	1316.3	1240.2	1200
Raw rating	1283.4	1316.3	1218.6	1200
Weighted rating	1299.5	1315.8	1240.2	1200
Weighted performance	1139.1	1146	1078.8	0
Floor	836.3	867.3	758.9	700
K-factor	36	36	36	36
Min/Max rating change allowed	147.2	140.5	161.5	165.8
Highest rating	1348.8 2023-02-01	1625.2 2023-02-01	1259.5 2024-02-01	1200 2018-10-01
Highest raw rating	1336.3 2024-02-01	1367.3 2024-02-01	1258.9 2024-03-01	1200 2024-02-01
Highest weighted rating	1336.3 2025-05-05	1367.3 2024-10-01	1242.6 2025-08-01	1200 2018-10-01
Highest weighted performance	1348.8 2023-02-01	1625.2 2023-02-01	1259.5 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.4	0	-1.9	0
New rating	1298.1	1316.3	1238.3	1200
Analysis
Rating	1299.5	1316.3	1240.2	1200
Raw rating	1283.4	1316.3	1218.6	1200
Weighted rating	1299.5	1315.8	1240.2
Weighted performance	1139.1	1146	1078.8
K-factor	36	36	36	36
Floor	836.3	867.3	758.9	700
Max/Min rating change allowed	147.2	140.5	161.5	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	1283.4	1316.3	1218.6	1200
New weighted rating	1298.1	1315.8	1238.3	1200
New weighted performance	1131.2	1137.8	1070.8	0
Temp new rating	1298.1	1316.3	1238.3	1200
Temp new rating +/-	-1.4	0	-1.9	0
Final new rating +/-	-1.4	0	-1.9	0
New rating	1298.1	1316.3	1238.3	1200
New K-factor	36	36	36	36
New floor	836.3	867.3	758.9	700

Item	Main	Standard	Rapid
	0	0	0
	28	28	0
	46	22	24
	37	15	22
	5	0	5
	0	0	0
History	116	65	51

Games since
	Main 74	Standard 50		Rapid 24		Blitz 0
Gender	Male
Age group	U16
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3271		1076		145
Male	2555		801		104
U16	517		175		31
U16 Male	382		125		22
Standard
	RSA		Province		Region
Overall	3018		864		119
Male	2384		636		83
U16	483		155		30
U16 Male	363		109		21
Rapid
	RSA		Province		Region
Overall	1430		709		106
Male	1121		549		77
U16	218		101		15
U16 Male	168		76		11
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	28	13.5	48.21	-15.2	1300.8	1285.6
Standard	28	13.5	48.21	-15.2	1300.8	1285.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	116	59	50.86	7.3	1290	1297.3
Standard	65	35	53.85	32.7	1303.5	1336.2
Rapid	51	24	47.06	-25	1272.8	1247.8
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1283.4	1316.3	1218.6	1200
2025-11-30	1300.9	1316.3	1242.7	1200
2025-11-01	1300.9	1316.3	1242.7	1200
2025-09-30	1300.9	1316.3	1242.7	1200
2025-09-01	1300.9	1316.3	1242.7	1200
2025-08-01	1300.9	1316.3	1242.7	1200
2025-07-01	1303.6	1320.8	1242.7	1200
2025-06-01	1303.6	1320.8	1242.7	1200
2025-05-01	1303.6	1320.8	1242.7	1200
2025-04-01	1303.3	1320.1	1242.7	1200
2025-03-01	1325.6	1342.3	1242.7	1200
2025-02-01	1300.1	1318.7	1242.7	1200
2025-01-01	1293.5	1303.6	1242.7	1200
2024-12-01	1293.5	1303.6	1242.7	1200
2024-11-01	1293.5	1303.6	1242.7	1200
2024-10-01	1293.5	1303.6	1242.7	1200
2024-09-01	1294.2	1303.6	1230.1	1200
2024-11-01	1294.2	1303.6	1230.1	1200
2024-07-01	1289.8	1308.6	1230.1	1200
2024-06-01	1289.8	1308.6	1230.1	1200
2024-05-01	1308.6	1308.6	1258.9	1200
2024-04-01	1265.7	1267.6	1258.9	1200
2024-03-01	1327.3	1367.3	1258.9	1200
2024-02-01	1336.3	1367.3	1258.5	1200

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	Kraaifontein Open 2025 (Rapid Open)	2025-12-07	2025-12-07	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
2	Cape Winelands Open 2025 (Intermediate)	2025-07-19	2025-07-20	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	Cape Town Open Chess Festival 2025 (C)	2025-03-22	2025-03-23	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
4	Cape Winelands Schools Prestige 2025 (U15 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
5	Cape Winelands Schools - Trials 1 2025 (U15 Boys)	2025-02-08	2025-02-08	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
6	2025 Kraaifontein Open Chess Championships (Advanced)	2025-01-04	2025-01-05	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
7	Kingsway Chess Open 2024 (U14)	2024-09-14	2024-09-14	Rapid	Overberg (WOS)	6	6	4	Yes	Analysis
8	Kleinmond Chess Club Open 2024 (Advanced)	2024-09-07	2024-09-07	Rapid	Overberg (WOS)	6	6	2	Yes	Analysis
9	South African Open Chess Championship 2024 (C)	2024-07-04	2024-07-07	Standard	Ethekwini (KED)	7	7	3	Yes	Analysis
10	Steinitz Chess Festival 2024 (Open Rapid)	2024-05-11	2024-05-11	Rapid	Cape Town (WCT)	6	6	2	Yes	Analysis
11	Strategize to Win 2024 (F)	2024-04-13	2024-04-14	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
12	Cape Town Open Chess Championship 2024 (Intermediate)	2024-03-16	2024-03-17	Standard	Cape Town (WCT)	6	5	0.5	Yes	Analysis
13	Cape Winelands Schools - Prestige 2024 (U15 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
14	Cape Winelands Schools - HS Trials 1 2024 (U15 Boys)	2024-02-17	2024-02-17	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
15	Chas Everitt and MHI Attorneys Rapid 2023 (U14)	2023-11-04	2023-11-04	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
16	Stellenbosch Primary Chess Tournament 2023 (U14)	2023-08-19	2023-08-19	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
17	Cape Winelands Open 2023 (U14)	2023-07-23	2023-07-23	Standard	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
18	Rhenish Primary Tournament 2023 (U14)	2023-05-13	2023-05-13	Rapid	Cape Winelands (WCW)	6	5	2	Yes	Analysis
19	Cape Town Open 2023 (U14)	2023-03-25	2023-03-25	Rapid	Cape Town (WCT)	6	5	2	Yes	Analysis
20	Cape Winelands Schools Prestige 2023 (U13 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
21	Cape Winelands Schools Chess - Trials 1 2023 (U13 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
22	Rhenish Primary Tournament 2022 (U14)	2022-05-14	2022-05-14	Rapid	Cape Winelands (WCW)	5	5	1	Yes	Analysis

#	Games	Start				End
1	6	Tournament Cape Winelands Open 2023				Tournament Stellenbosch Primary Chess Tournament 2023
		date 2023-07-23	rnd 1	type Standard	result 1	date 2023-08-19	rnd 1	type Rapid	result 1
		Opponent Van Deventer, L (Lia)				Opponent Siebritz, R (Rene)
2	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 4	type Standard	result 1
		Opponent Cyster, J (Jean-Luke)				Opponent Tiemie, J (Jaheim)
3	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 2	type Standard	result 1	date 2024-07-05	rnd 4	type Standard	result 1
		Opponent Rubusana, A (Anda)				Opponent Soobramoney, H (Hezron)

#	Games	Start				End
1	6	Tournament Cape Winelands Open 2023				Tournament Cape Winelands Schools - Prestige 2024
		date 2023-07-23	rnd 1	type Standard	result 1	date 2024-03-02	rnd 1	type Standard	result 1
		Opponent Van Deventer, L (Lia)				Opponent Stevens, W (Wildeno)
2	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 4	type Standard	result 1
		Opponent Cyster, J (Jean-Luke)				Opponent Tiemie, J (Jaheim)
3	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 2	type Standard	result 1	date 2024-07-05	rnd 4	type Standard	result 1
		Opponent Rubusana, A (Anda)				Opponent Soobramoney, H (Hezron)

#	Games	Start				End
1	3	Tournament Chas Everitt and MHI Attorneys Rapid 2023				Tournament Chas Everitt and MHI Attorneys Rapid 2023
		date 2023-11-04	rnd 2	type Rapid	result 1	date 2023-11-04	rnd 4	type Rapid	result 1
		Opponent Chen, L (Lulu)				Opponent Scheepers, R (Riko)
2	2	Tournament Kingsway Chess Open 2024				Tournament Kingsway Chess Open 2024
		date 2024-09-14	rnd 1	type Rapid	result 1	date 2024-09-14	rnd 2	type Rapid	result 1
		Opponent Van Schoor, J (Jade)				Opponent Rule, C (Calem)
3	2	Tournament Steinitz Chess Festival 2024				Tournament Steinitz Chess Festival 2024
		date 2024-05-11	rnd 5	type Rapid	result 1	date 2024-05-11	rnd 6	type Rapid	result 1
		Opponent Venter, C (Chantelle)				Opponent Uys, I (Ivan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 4	type Standard	result 1
		Opponent Cyster, J (Jean-Luke)				Opponent Tiemie, J (Jaheim)
2	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 2	type Standard	result 1	date 2024-07-05	rnd 4	type Standard	result 1
		Opponent Rubusana, A (Anda)				Opponent Soobramoney, H (Hezron)
3	3	Tournament Chas Everitt and MHI Attorneys Rapid 2023				Tournament Chas Everitt and MHI Attorneys Rapid 2023
		date 2023-11-04	rnd 2	type Rapid	result 1	date 2023-11-04	rnd 4	type Rapid	result 1
		Opponent Chen, L (Lulu)				Opponent Scheepers, R (Riko)

#	Games	Start				End
1	4	Tournament Cape Winelands Schools Chess - Trials 1 2023				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2023-02-18	rnd 1	type Standard	result 1	date 2023-02-18	rnd 4	type Standard	result 1
		Opponent Cyster, J (Jean-Luke)				Opponent Tiemie, J (Jaheim)
2	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 2	type Standard	result 1	date 2024-07-05	rnd 4	type Standard	result 1
		Opponent Rubusana, A (Anda)				Opponent Soobramoney, H (Hezron)
3	3	Tournament Cape Winelands Open 2023				Tournament Cape Winelands Open 2023
		date 2023-07-23	rnd 1	type Standard	result 1	date 2023-07-23	rnd 3	type Standard	result 1
		Opponent Van Deventer, L (Lia)				Opponent Kwabe, A (Awonke)

#	Games	Start				End
1	3	Tournament Chas Everitt and MHI Attorneys Rapid 2023				Tournament Chas Everitt and MHI Attorneys Rapid 2023
		date 2023-11-04	rnd 2	type Rapid	result 1	date 2023-11-04	rnd 4	type Rapid	result 1
		Opponent Chen, L (Lulu)				Opponent Scheepers, R (Riko)
2	2	Tournament Kingsway Chess Open 2024				Tournament Kingsway Chess Open 2024
		date 2024-09-14	rnd 1	type Rapid	result 1	date 2024-09-14	rnd 2	type Rapid	result 1
		Opponent Van Schoor, J (Jade)				Opponent Rule, C (Calem)
3	2	Tournament Steinitz Chess Festival 2024				Tournament Steinitz Chess Festival 2024
		date 2024-05-11	rnd 5	type Rapid	result 1	date 2024-05-11	rnd 6	type Rapid	result 1
		Opponent Venter, C (Chantelle)				Opponent Uys, I (Ivan)

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	Radloff ,H (Hunther)	2	1	0	2	1	0	0	0	0	0	0	0
1	Radloff ,H (Hunther)	2	1356.2	1356.2	2	1334.1	1356.2	0	0	0	0	0	0
2	Small ,Q (Quade)	2	1	0	2	1	0	0	0	0	0	0	0
2	Small ,Q (Quade)	2	1464.8	1464.8	2	1476.6	1464.8	0	0	0	0	0	0
3	Toerien ,W (William)	2	1	0	2	1	0	0	0	0	0	0	0
3	Toerien ,W (William)	2	1207.4	1207.4	2	1189.1	1207.4	0	0	0	0	0	0
4	Cupido ,C (Caylah)	2	2	425	2	2	425	0	0	0	0	0	0
4	Cupido ,C (Caylah)	2	1384.9	1809.9	2	1376.8	1809.9	0	0	0	0	0	0
5	Sobada ,A (Anelisa)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Sobada ,A (Anelisa)	2	1337.9	912.9	2	1317.2	912.9	0	0	0	0	0	0
6	Nel ,J (Jaap)	2	2	425	1	1	425	1	1	425	0	0	0
6	Nel ,J (Jaap)	2	1190.9	1615.9	1	1200	1615.9	1	1200	1615.9	0	0	0
7	Kirthan ,V (Vajra)	2	0	-425	0	0	0	2	0	-425	0	0	0
7	Kirthan ,V (Vajra)	2	1293.4	868.4	0	0	0	2	1236.1	868.4	0	0	0
8	Tiemie ,J (Jaheim)	1	1	425	1	1	425	0	0	0	0	0	0
8	Tiemie ,J (Jaheim)	1	1425.6	1850.6	1	1420.5	1850.6	0	0	0	0	0	0
9	Manning ,C (Callan)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Manning ,C (Callan)	1	1481.4	1481.4	1	1454.9	1481.4	0	0	0	0	0	0
10	Swart ,A (Alexander)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Swart ,A (Alexander)	1	1200	775	1	1200	775	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Prins, S (Stefan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms