Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Villiers, J (Jean)

Chess SA id

1110303246

FIDE id

Date of birth

2011-11-05 (U16)

Gender

Male

Region

West Coast (WCU)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-06-14

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1234.1	1221.6	1238.9	1200
Raw rating	1234.1	1221.6	1238.9	1200
Weighted rating	1219.1	1215.7	1211.5	1200
Weighted performance	0	0	0	0
Floor	734.1	721.6	738.9	700
K-factor	36	36	36	36
Min/Max rating change allowed	157.9	160.8	156.9	165.8
Highest rating	1326.7 2024-08-01	1296.9 2024-08-01	1238.9 2025-08-01	1200 2024-05-01
Highest raw rating	1234.1 2025-08-01	1221.6 2024-09-01	1238.9 2025-08-01	1200 2024-05-01
Highest weighted rating	1213.2 2025-08-01	1212.3 2025-08-01	1203 2025-08-01	1200 2024-05-01
Highest weighted performance	1326.7 2024-08-01	1296.9 2024-08-01	1200 2024-05-01	1200 2024-05-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1234.1	1221.6	1238.9	1200
Analysis
Rating	1234.1	1221.6	1238.9	1200
Raw rating	1234.1	1221.6	1238.9	1200
Weighted rating	1219.1	1215.7	1211.5
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	734.1	721.6	738.9	700
Max/Min rating change allowed	157.9	160.8	156.9	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	1234.1	1221.6	1238.9	1200
New weighted rating	1220.9	1216.7	1214.1	1200
New weighted performance	0	0	0	0
Temp new rating	1234.1	1221.6	1238.9	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1234.1	1221.6	1238.9	1200
New K-factor	36	36	36	36
New floor	734.1	721.6	738.9	700

Item	Main	Standard	Rapid
	0	0	0
	10	0	10
	9	9	0
	0	0	0
	0	0	0
	0	0	0
History	19	9	10

Games since
	Main 19	Standard 9		Rapid 10		Blitz 0
Gender	Male
Age group	U16
Region	West Coast (WCU)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
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	10	4.5	45	-42.5	1289.9	1247.4
Standard	0	0	0	0	0	0
Rapid	10	4.5	45	-42.5	1289.9	1247.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	19	8.5	44.74	-44.7	1294.4	1249.6
Standard	9	4	44.44	-47.2	1299.3	1252.1
Rapid	10	4.5	45	-42.5	1289.9	1247.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1234.1	1221.6	1238.9	1200
2025-09-30	1234.1	1221.6	1238.9	1200
2025-09-01	1234.1	1221.6	1238.9	1200
2025-08-01	1234.1	1221.6	1238.9	1200
2025-07-01	1214.7	1221.6	1199.8	1200
2025-06-01	1214.7	1221.6	1199.8	1200
2025-05-01	1214.7	1221.6	1199.8	1200
2025-04-01	1214.7	1221.6	1199.8	1200
2025-03-01	1214.7	1221.6	1198.4	1200
2025-02-01	1225.5	1221.6	1200	1200
2025-01-01	1225.5	1221.6	1200	1200
2024-12-01	1225.5	1221.6	1200	1200
2024-11-01	1225.5	1221.6	1200	1200
2024-10-01	1225.5	1221.6	1200	1200
2024-09-01	1225.5	1221.6	1200	1200
2024-08-01	1176.4	1166.4	1200	1200
2024-07-01	1176.4	1166.4	1200	1200
2024-09-01	1176.4	1166.4	1200	1200
2024-05-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	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	Upper West Coast Top Schools 2025 (U15)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
2	Upper West Coast Presrige 2025 (U15 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Upper West Coast Top Schools 2025 (U15)	2025-06-14	2025-06-14	Rapid	West Coast (WCU)	5	5	3	Yes	Analysis
2	Upper West Coast Presrige 2025 (U15 Boys)	2025-02-22	2025-02-22	Rapid	West Coast (WCU)	5	5	1.5	Yes	Analysis
3	Pedro Booyse Top Schools Championships 2024 (U13)	2024-07-20	2024-07-20	Standard	West Coast (WCU)	5	4	3	Yes	Analysis
4	Western Cape PS Individuals Championship 2024 (U13 Boys)	2024-05-04	2024-05-05	Standard	West Coast (WCU)	6	5	1	Yes	Analysis

#	Games	Start				End
1	3	Tournament Upper West Coast Top Schools 2025				Tournament Upper West Coast Top Schools 2025
		date 2025-06-14	rnd 1	type Rapid	result 1	date 2025-06-14	rnd 3	type Rapid	result 1
		Opponent Maletta, S (Sherevitho)				Opponent Seas, A (Ava-Gee)
2	3	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent Brophy, K (Kettarin)				Opponent Skippers, G (Gerano)
3	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 3	type Rapid	result 0.5	date 2025-02-22	rnd 3	type Rapid	result 0.5
		Opponent Boois, J (Jp)				Opponent Boois, J (Jp)

#	Games	Start				End
1	3	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent Brophy, K (Kettarin)				Opponent Skippers, G (Gerano)
2	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 5	type Standard	result 1	date 2024-05-05	rnd 5	type Standard	result 1
		Opponent Booysen, J (Joshua)				Opponent Booysen, J (Joshua)

#	Games	Start				End
1	3	Tournament Upper West Coast Top Schools 2025				Tournament Upper West Coast Top Schools 2025
		date 2025-06-14	rnd 1	type Rapid	result 1	date 2025-06-14	rnd 3	type Rapid	result 1
		Opponent Maletta, S (Sherevitho)				Opponent Seas, A (Ava-Gee)
2	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 3	type Rapid	result 0.5	date 2025-02-22	rnd 3	type Rapid	result 0.5
		Opponent Boois, J (Jp)				Opponent Boois, J (Jp)
3	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Lombaard, R (Royston)				Opponent Lombaard, R (Royston)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Upper West Coast Top Schools 2025				Tournament Upper West Coast Top Schools 2025
		date 2025-06-14	rnd 1	type Rapid	result 1	date 2025-06-14	rnd 3	type Rapid	result 1
		Opponent Maletta, S (Sherevitho)				Opponent Seas, A (Ava-Gee)
2	3	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent Brophy, K (Kettarin)				Opponent Skippers, G (Gerano)
3	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Lombaard, R (Royston)				Opponent Lombaard, R (Royston)

#	Games	Start				End
1	3	Tournament Pedro Booyse Top Schools Championships 2024				Tournament Pedro Booyse Top Schools Championships 2024
		date 2024-07-20	rnd 1	type Standard	result 1	date 2024-07-20	rnd 3	type Standard	result 1
		Opponent Brophy, K (Kettarin)				Opponent Skippers, G (Gerano)
2	1	Tournament Western Cape PS Individuals Championship 2024				Tournament Western Cape PS Individuals Championship 2024
		date 2024-05-05	rnd 5	type Standard	result 1	date 2024-05-05	rnd 5	type Standard	result 1
		Opponent Booysen, J (Joshua)				Opponent Booysen, J (Joshua)

#	Games	Start				End
1	3	Tournament Upper West Coast Top Schools 2025				Tournament Upper West Coast Top Schools 2025
		date 2025-06-14	rnd 1	type Rapid	result 1	date 2025-06-14	rnd 3	type Rapid	result 1
		Opponent Maletta, S (Sherevitho)				Opponent Seas, A (Ava-Gee)
2	1	Tournament Upper West Coast Presrige 2025				Tournament Upper West Coast Presrige 2025
		date 2025-02-22	rnd 1	type Rapid	result 1	date 2025-02-22	rnd 1	type Rapid	result 1
		Opponent Lombaard, R (Royston)				Opponent Lombaard, R (Royston)

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	Sher ,J (Jonah)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Sher ,J (Jonah)	1	1369.1	944.1	1	1332.8	944.1	0	0	0	0	0	0
2	Booysen ,J (Joshua)	1	1	425	1	1	425	0	0	0	0	0	0
2	Booysen ,J (Joshua)	1	1243.5	1668.5	1	1215.5	1668.5	0	0	0	0	0	0
3	Skippers ,G (Gerano)	1	1	425	1	1	425	0	0	0	0	0	0
3	Skippers ,G (Gerano)	1	1240.5	1665.5	1	1139.6	1665.5	0	0	0	0	0	0
4	Oordman ,C (Christiano)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Oordman ,C (Christiano)	1	1324.1	899.1	1	1271.8	899.1	0	0	0	0	0	0
5	Kleynhans ,C (Caylen)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Kleynhans ,C (Caylen)	1	1423.7	998.7	1	1380	998.7	0	0	0	0	0	0
6	Claassen ,U (Uthan)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Claassen ,U (Uthan)	1	1336.3	911.3	1	1318.4	911.3	0	0	0	0	0	0
7	Brophy ,K (Kettarin)	1	1	425	1	1	425	0	0	0	0	0	0
7	Brophy ,K (Kettarin)	1	1116.2	1541.2	1	1200	1541.2	0	0	0	0	0	0
8	Benjamin ,C (Crushion)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Benjamin ,C (Crushion)	1	1368.9	943.9	1	1384.1	943.9	0	0	0	0	0	0
9	Cloete ,F (Fern)	1	1	425	1	1	425	0	0	0	0	0	0
9	Cloete ,F (Fern)	1	1271.7	1696.7	1	1200	1696.7	0	0	0	0	0	0
10	Boois ,J (Jp)	1	0.5	0	0	0	0	1	0.5	0	0	0	0
10	Boois ,J (Jp)	1	1159.7	1159.7	0	0	0	1	1135.2	1159.7	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

De Villiers, J (Jean)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms