Chess South Africa Ratings Database

PLAYER PAGE

Personal

Prinsloo, J (Jaco)

Chess SA id

1120145242

FIDE id

Date of birth

2012-01-30 (U14)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1313	1321.8	1227.4	1200
Raw rating	1313	1321.8	1227.4	1200
Weighted rating	1303.6	1313.9	1219.4	1200
Weighted performance	1178.9	1168.3	0	0
Floor	813	821.8	727.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	141.2	139.4	159.5	165.8
Highest rating	1322 2024-07-01	1326.7 2024-07-01	1227.4 2025-03-01	1200 2018-10-01
Highest raw rating	1313 2025-04-01	1321.8 2025-04-01	1227.4 2025-03-01	1200 2024-02-01
Highest weighted rating	1300.6 2025-08-01	1311.6 2025-08-01	1216.4 2025-08-01	1200 2018-10-01
Highest weighted performance	1322 2024-07-01	1326.7 2024-07-01	1214 2024-03-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1313	1321.8	1227.4	1200
Analysis
Rating	1313	1321.8	1227.4	1200
Raw rating	1313	1321.8	1227.4	1200
Weighted rating	1303.6	1313.9	1219.4
Weighted performance	1178.9	1168.3	0
K-factor	36	36	36	36
Floor	813	821.8	727.4	700
Max/Min rating change allowed	141.2	139.4	159.5	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	1313	1321.8	1227.4	1200
New weighted rating	1304.9	1315	1220.6	1200
New weighted performance	1178.4	1167.8	0	0
Temp new rating	1313	1321.8	1227.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1313	1321.8	1227.4	1200
New K-factor	36	36	36	36
New floor	813	821.8	727.4	700

Item	Main	Standard	Rapid
	0	0	0
	11	5	6
	21	16	5
	15	9	6
	5	5	0
	0	0	0
History	52	35	17

Games since
	Main 32	Standard 21		Rapid 11		Blitz 0
Gender	Male
Age group	U14
Region	Overberg (WOS)
Province	Western Cape (WC)
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	11	6	54.55	38.6	1266.1	1304.7
Standard	5	3	60	85	1284	1369
Rapid	6	3	50	0	1251.1	1251.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	52	30.5	58.65	73.6	1238.1	1311.6
Standard	35	22	62.86	109.3	1246.2	1355.5
Rapid	17	8.5	50	0	1221.4	1221.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1313	1321.8	1227.4	1200
2025-09-01	1313	1321.8	1227.4	1200
2025-08-01	1313	1321.8	1227.4	1200
2025-07-01	1313	1321.8	1227.4	1200
2025-06-01	1313	1321.8	1227.4	1200
2025-05-01	1313	1321.8	1227.4	1200
2025-04-01	1313	1321.8	1227.4	1200
2025-03-01	1299.5	1316.9	1227.4	1200
2025-02-01	1306	1316.9	1212.8	1200
2025-01-01	1306	1316.9	1212.8	1200
2024-12-01	1306	1316.9	1212.8	1200
2024-11-01	1306	1316.9	1212.8	1200
2024-10-01	1306	1316.9	1212.8	1200
2024-09-01	1306	1316.9	1212.8	1200
2024-08-01	1306	1316.9	1212.8	1200
2024-07-01	1246.8	1246.3	1212.8	1200
2024-06-01	1246.8	1246.3	1212.8	1200
2024-08-01	1284.1	1298.5	1212.8	1200
2024-04-01	1284.1	1298.5	1212.8	1200
2024-03-01	1282.7	1305	1184.4	1200
2024-02-01	1282.7	1305	1184.4	1200
2024-01-01	1282.7	1305	1184.4	1200
2023-12-01	1282.7	1305	1184.4	1200
2023-11-01	1282.7	1305	1184.4	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	Overberg Schools - PS Closed 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
2	Overberg Schools - PS Trials (Region 1) 2025 (U13 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Overberg Schools - PS Closed 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
2	Overberg Schools - PS Trials (Region 1) 2025 (U13 Boys)	2025-02-22	2025-02-22	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
3	Overberg Schools - Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
4	Western Cape PS Individuals Championship 2024 (U13 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	6	1	Yes	Analysis
5	Overberg Schools - PS Closed 2024 (U13 Boys)	2024-03-16	2024-03-16	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
6	Overberg Schools - PS Trials Region 3 2024 (U13 Boys)	2024-03-02	2024-03-02	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
7	Overberg Top Schools 2023 (U11)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	4	4	Yes	Analysis
8	Overberg School Chess Closed Tournament 2023 (U11 Boys)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
9	Overberg Primary School Trials (Region 2)	2023-02-24	2023-03-10	Rapid	Overberg (WOS)	6	6	2.5	Yes	Analysis
10	Western Cape Top Schools 2022 (U11 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
11	Overberg Topskole 2022 (O11)	2022-08-30	2022-08-30	Standard	Overberg (WOS)	6	0	0	No	Analysis

#	Games	Start				End
1	6	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2024-07-27	rnd 1	type Standard	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Jiri, H (Henry)				Opponent Adolf, D (Damian)
2	5	Tournament Overberg Top Schools 2023				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2023-08-05	rnd 2	type Standard	result 1	date 2024-03-02	rnd 1	type Rapid	result 1
		Opponent Pretorius, D (Dominic Reinhart)				Opponent Drury, R (Riko)
3	3	Tournament Overberg School Chess Closed Tournament 2023				Tournament Overberg School Chess Closed Tournament 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 4	type Standard	result 1
		Opponent Kemp, K (Keathan)				Opponent Bester, B (Benjamin)

#	Games	Start				End
1	6	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - PS Closed 2025
		date 2024-07-27	rnd 1	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Jiri, H (Henry)				Opponent Slingers, B (Brendon)
2	5	Tournament Overberg Top Schools 2023				Tournament Overberg Schools - PS Closed 2024
		date 2023-08-05	rnd 2	type Standard	result 1	date 2024-03-16	rnd 1	type Standard	result 1
		Opponent Pretorius, D (Dominic Reinhart)				Opponent Ess, N (Noah)
3	3	Tournament Overberg School Chess Closed Tournament 2023				Tournament Overberg School Chess Closed Tournament 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 4	type Standard	result 1
		Opponent Kemp, K (Keathan)				Opponent Bester, B (Benjamin)

#	Games	Start				End
1	2	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Swart, E (Eon)				Opponent Adolf, D (Damian)
2	2	Tournament Overberg Primary School Trials				Tournament Overberg Primary School Trials
		date 2023-02-24	rnd 1	type Rapid	result 1	date 2023-02-24	rnd 2	type Rapid	result 1
		Opponent Van Tonder, A (Alexander)				Opponent Van Der Merwe, D (Dante)
3	1	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Groenewald, C (Christiaan)				Opponent Groenewald, C (Christiaan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2024-07-27	rnd 1	type Standard	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Jiri, H (Henry)				Opponent Adolf, D (Damian)
2	5	Tournament Overberg Top Schools 2023				Tournament Overberg Schools - PS Trials Region 3 2024
		date 2023-08-05	rnd 2	type Standard	result 1	date 2024-03-02	rnd 1	type Rapid	result 1
		Opponent Pretorius, D (Dominic Reinhart)				Opponent Drury, R (Riko)
3	3	Tournament Overberg School Chess Closed Tournament 2023				Tournament Overberg School Chess Closed Tournament 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 4	type Standard	result 1
		Opponent Kemp, K (Keathan)				Opponent Bester, B (Benjamin)

#	Games	Start				End
1	6	Tournament Overberg Schools - Top Schools 2024				Tournament Overberg Schools - PS Closed 2025
		date 2024-07-27	rnd 1	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Jiri, H (Henry)				Opponent Slingers, B (Brendon)
2	5	Tournament Overberg Top Schools 2023				Tournament Overberg Schools - PS Closed 2024
		date 2023-08-05	rnd 2	type Standard	result 1	date 2024-03-16	rnd 1	type Standard	result 1
		Opponent Pretorius, D (Dominic Reinhart)				Opponent Ess, N (Noah)
3	3	Tournament Overberg School Chess Closed Tournament 2023				Tournament Overberg School Chess Closed Tournament 2023
		date 2023-03-25	rnd 2	type Standard	result 1	date 2023-03-25	rnd 4	type Standard	result 1
		Opponent Kemp, K (Keathan)				Opponent Bester, B (Benjamin)

#	Games	Start				End
1	2	Tournament Overberg Schools - PS Trials Region 3 2024				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2024-03-02	rnd 5	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Swart, E (Eon)				Opponent Adolf, D (Damian)
2	2	Tournament Overberg Primary School Trials				Tournament Overberg Primary School Trials
		date 2023-02-24	rnd 1	type Rapid	result 1	date 2023-02-24	rnd 2	type Rapid	result 1
		Opponent Van Tonder, A (Alexander)				Opponent Van Der Merwe, D (Dante)
3	1	Tournament Overberg Schools - PS Trials (Region 1) 2025				Tournament Overberg Schools - PS Trials (Region 1) 2025
		date 2025-02-22	rnd 6	type Rapid	result 1	date 2025-02-22	rnd 6	type Rapid	result 1
		Opponent Groenewald, C (Christiaan)				Opponent Groenewald, C (Christiaan)

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	Prinsloo ,L (Lyle)	3	0	-425	1	0	-425	2	0	-425	0	0	0
1	Prinsloo ,L (Lyle)	3	1511.9	1086.9	1	1488.7	1086.9	2	1494.8	1086.9	0	0	0
2	Skippers ,P (Paul)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Skippers ,P (Paul)	2	1283.6	858.6	2	1252.4	858.6	0	0	0	0	0	0
3	Du Plessis ,J (Jan-Dawid)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Du Plessis ,J (Jan-Dawid)	2	1284.2	859.2	1	1225	859.2	1	1355.8	859.2	0	0	0
4	Prins ,C (Christiaan)	2	1	0	1	1	425	1	0	-425	0	0	0
4	Prins ,C (Christiaan)	2	1196.2	1196.2	1	1171.9	1621.2	1	1215.5	771.2	0	0	0
5	Drury ,R (Riko)	2	1	0	0	0	0	2	1	0	0	0	0
5	Drury ,R (Riko)	2	1098.8	1098.8	0	0	0	2	1092.2	1098.8	0	0	0
6	Groenewald ,C (Christiaan)	2	1.5	212.5	0	0	0	2	1.5	212.5	0	0	0
6	Groenewald ,C (Christiaan)	2	1250.2	1462.7	0	0	0	2	1214.2	1462.7	0	0	0
7	Van Tonder ,A (Alexander)	2	2	425	0	0	0	2	2	425	0	0	0
7	Van Tonder ,A (Alexander)	2	1146.7	1571.7	0	0	0	2	1148	1571.7	0	0	0
8	Willemse ,S (Schalk)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Willemse ,S (Schalk)	1	1395.4	970.4	1	1322.8	970.4	0	0	0	0	0	0
9	Pretorius ,D (Dominic Reinhart)	1	1	425	1	1	425	0	0	0	0	0	0
9	Pretorius ,D (Dominic Reinhart)	1	1162.6	1587.6	1	1160.8	1587.6	0	0	0	0	0	0
10	Van Rooyen ,J (Johannes Christiaan)	1	1	425	1	1	425	0	0	0	0	0	0
10	Van Rooyen ,J (Johannes Christiaan)	1	1182	1607	1	1200	1607	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Prinsloo, J (Jaco)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms