Chess South Africa Ratings Database

PLAYER PAGE

Personal

Claassen, J (Joshua)

Chess SA id

1110150641

FIDE id

Date of birth

2011-12-11 (U16)

Gender

Male

Region

Pixley-ka-Seme (NCP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-23

Personal details last changed

2025-04-13

Junior GPX Games

Junior GPX Points

1238.7

Item	Main	Standard	Rapid	Blitz
Rating	1267.9	1271.8	1200	1200
Raw rating	1267.9	1271.8	1200	1200
Weighted rating	1244.9	1247.8	1200	1200
Weighted performance	1230.5	1231.4	0	0
Floor	767.9	771.8	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	150.5	149.7	165.8	165.8
Highest rating	1267.9 2025-09-01	1271.8 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1267.9 2025-09-01	1271.8 2025-09-01	1200 2024-03-01	1200 2024-03-01
Highest weighted rating	1238.9 2025-09-01	1241.8 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1257.3 2025-09-01	1258.2 2025-09-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1267.9	1271.8	1200	1200
Analysis
Rating	1267.9	1271.8	1200	1200
Raw rating	1267.9	1271.8	1200	1200
Weighted rating	1244.9	1247.8	1200
Weighted performance	1230.5	1231.4	0
K-factor	36	36	36	36
Floor	767.9	771.8	700	700
Max/Min rating change allowed	150.5	149.7	165.8	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	1267.9	1271.8	1200	1200
New weighted rating	1247.5	1250.5	1200	1200
New weighted performance	1223	1223.9	0	0
Temp new rating	1267.9	1271.8	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1267.9	1271.8	1200	1200
New K-factor	36	36	36	36
New floor	767.9	771.8	700	700

Item	Main	Standard
	0	0
	18	18
	25	25
	19	19
	0	0
	0	0
History	62	62

Games since
	Main 43	Standard 43		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Pixley-ka-Seme (NCP)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	3571		95		24
Male	2745		69		16
U16	575		22		6
U16 Male	409		15		2
Standard
	RSA		Province		Region
Overall	3444		124		27
Male	2663		94		18
U16	570		26		6
U16 Male	416		19		2
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	18	8.5	47.22	-23.6	1309.2	1285.6
Standard	18	8.5	47.22	-23.6	1309.2	1285.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	62	30.5	49.19	-6.9	1247.6	1240.8
Standard	62	30.5	49.19	-6.9	1247.6	1240.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1267.9	1271.8	1200	1200
2025-09-30	1267.9	1271.8	1200	1200
2025-09-01	1267.9	1271.8	1200	1200
2025-08-01	1245.2	1247.4	1200	1200
2025-07-01	1245.2	1247.4	1200	1200
2025-06-01	1245.2	1247.4	1200	1200
2025-05-01	1245.2	1247.4	1200	1200
2025-04-01	1245.2	1247.4	1200	1200
2025-03-01	1245.2	1247.4	1200	1200
2025-02-01	1239.9	1241.5	1200	1200
2025-01-01	1239.9	1241.5	1200	1200
2024-12-01	1239.9	1241.5	1200	1200
2024-11-01	1239.9	1241.5	1200	1200
2024-10-01	1248.1	1253	1200	1200
2024-09-01	1248.1	1253	1200	1200
2024-08-01	1214.6	1218.1	1200	1200
2024-07-01	1214.6	1218.5	1200	1200
2024-09-01	1214.6	1218.5	1200	1200
2024-05-01	1214.6	1218.5	1200	1200
2024-04-01	1214.6	1218.5	1200	1200
2024-03-01	1214.6	1218.5	1200	1200
2024-02-01	1205.8	1209.9	1200	1200
2024-01-01	1203.4	1208.8	1200	1200
2023-12-01	1203.4	1208.8	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	Northern Cape Closed 202 (U16 Open)	2025-08-22	2025-08-23	Standard	ZF Mgcawu (NZF)	5	5	2.5	Yes	Analysis
2	De Aar Primary School 2025 (U14)	2025-08-16	2025-08-16	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
3	Hopetown Schools Open 2025 (U15)	2025-08-01	2025-08-01	Standard	Pixley-ka-Seme (NCP)	5	4	1	Yes	Analysis
4	2025 HSDA School Chess Tournament (U15)	2025-02-08	2025-02-08	Standard	Pixley-ka-Seme (NCP)	5	4	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Northern Cape Closed 202 (U16 Open)	2025-08-22	2025-08-23	Standard	ZF Mgcawu (NZF)	5	5	2.5	Yes	Analysis
2	De Aar Primary School 2025 (U14)	2025-08-16	2025-08-16	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
3	Hopetown Schools Open 2025 (U15)	2025-08-01	2025-08-01	Standard	Pixley-ka-Seme (NCP)	5	4	1	Yes	Analysis
4	2025 HSDA School Chess Tournament (U15)	2025-02-08	2025-02-08	Standard	Pixley-ka-Seme (NCP)	5	4	2	Yes	Analysis
5	2024 Hopetown Schools Chess Tournament (U13)	2024-10-12	2024-10-12	Standard	Pixley-ka-Seme (NCP)	5	5	2.5	Yes	Analysis
6	2024 NC Closed Chess Championships (U14 Open)	2024-08-23	2024-08-25	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
7	2024 HSDA Open 3 (U13)	2024-07-27	2024-07-27	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis
8	Hopetown Open Chess Tournament 2024 (U14)	2024-02-10	2024-02-10	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
9	HSDA School Open 2024 (U12+U14)	2024-01-27	2024-01-27	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
10	Hopetown Chess Open Tournament 2023 (U14-U18)	2023-08-05	2023-08-05	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
11	HSDA Chess Club School Tournament 2023 (U12+U14)	2023-07-29	2023-07-29	Standard	Pixley-ka-Seme (NCP)	5	4	1	Yes	Analysis
12	Hopetown School Chess Open Tournament 2023 (U11+U13)	2023-05-06	2023-05-06	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
13	Hopetown Schools Chess Open Tournament 2023 (U13)	2023-02-25	2023-02-25	Standard	John Taolo Gaetswewe (NCJ)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-22	rnd 2	type Standard	result 0.5	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Davids, T (Tylor)				Opponent Buanga, A (Adeli)
2	3	Tournament 2024 NC Closed Chess Championships				Tournament 2024 NC Closed Chess Championships
		date 2024-08-24	rnd 3	type Standard	result 1	date 2024-08-25	rnd 5	type Standard	result 0.5
		Opponent Claassen, D (David Christian)				Opponent Mayanja, B (Brianah)
3	3	Tournament Hopetown Open Chess Tournament 2024				Tournament 2024 HSDA Open 3
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-07-27	rnd 1	type Standard	result 1
		Opponent Horn, Z (Zandru)				Opponent Booysen, D (Dhesan)

#	Games	Start				End
1	3	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-22	rnd 2	type Standard	result 0.5	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Davids, T (Tylor)				Opponent Buanga, A (Adeli)
2	3	Tournament 2024 NC Closed Chess Championships				Tournament 2024 NC Closed Chess Championships
		date 2024-08-24	rnd 3	type Standard	result 1	date 2024-08-25	rnd 5	type Standard	result 0.5
		Opponent Claassen, D (David Christian)				Opponent Mayanja, B (Brianah)
3	3	Tournament Hopetown Open Chess Tournament 2024				Tournament 2024 HSDA Open 3
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-07-27	rnd 1	type Standard	result 1
		Opponent Horn, Z (Zandru)				Opponent Booysen, D (Dhesan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Hopetown Open Chess Tournament 2024				Tournament 2024 HSDA Open 3
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-07-27	rnd 1	type Standard	result 1
		Opponent Horn, Z (Zandru)				Opponent Booysen, D (Dhesan)
2	2	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-23	rnd 3	type Standard	result 1	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Chuma, N (Nicholus)				Opponent Buanga, A (Adeli)
3	2	Tournament 2024 Hopetown Schools Chess Tournament				Tournament 2024 Hopetown Schools Chess Tournament
		date 2024-10-12	rnd 2	type Standard	result 1	date 2024-10-12	rnd 3	type Standard	result 1
		Opponent Potgieter, M (Martin-Juan)				Opponent Fischer, C (Carlanda)

#	Games	Start				End
1	3	Tournament Hopetown Open Chess Tournament 2024				Tournament 2024 HSDA Open 3
		date 2024-02-10	rnd 4	type Standard	result 1	date 2024-07-27	rnd 1	type Standard	result 1
		Opponent Horn, Z (Zandru)				Opponent Booysen, D (Dhesan)
2	2	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-23	rnd 3	type Standard	result 1	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Chuma, N (Nicholus)				Opponent Buanga, A (Adeli)
3	2	Tournament 2024 Hopetown Schools Chess Tournament				Tournament 2024 Hopetown Schools Chess Tournament
		date 2024-10-12	rnd 2	type Standard	result 1	date 2024-10-12	rnd 3	type Standard	result 1
		Opponent Potgieter, M (Martin-Juan)				Opponent Fischer, C (Carlanda)

No games found.

#	Games	Start				End

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	Rusford ,C (Chad Jason)	7	0.5	-364.3	7	0.5	-364.3	0	0	0	0	0	0
1	Rusford ,C (Chad Jason)	7	1447.2	1082.9	7	1458.7	1082.9	0	0	0	0	0	0
2	April ,SL (Swazi Laurian)	5	4	255	5	4	255	0	0	0	0	0	0
2	April ,SL (Swazi Laurian)	5	1077.3	1332.3	5	1072.8	1332.3	0	0	0	0	0	0
3	Botha ,A (Ane)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
3	Botha ,A (Ane)	4	1124	1336.5	4	1125.4	1336.5	0	0	0	0	0	0
4	Claassen ,D (David Christian)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Claassen ,D (David Christian)	3	1167.8	1309.4	3	1164	1309.4	0	0	0	0	0	0
5	Vermeulen ,P (Petrus Van Der Walt)	3	0	-425	3	0	-425	0	0	0	0	0	0
5	Vermeulen ,P (Petrus Van Der Walt)	3	1505.5	1080.5	3	1508.5	1080.5	0	0	0	0	0	0
6	Morai ,T (Tlotlisang)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
6	Morai ,T (Tlotlisang)	2	1183.6	1396.1	2	1180.6	1396.1	0	0	0	0	0	0
7	Nel ,K (Kayla)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Nel ,K (Kayla)	2	1380.2	955.2	2	1381.8	955.2	0	0	0	0	0	0
8	Potgieter ,M (Martin-Juan)	2	2	425	2	2	425	0	0	0	0	0	0
8	Potgieter ,M (Martin-Juan)	2	1129.8	1554.8	2	1120	1554.8	0	0	0	0	0	0
9	Horn ,Z (Zandru)	2	2	425	2	2	425	0	0	0	0	0	0
9	Horn ,Z (Zandru)	2	1107.7	1532.7	2	1089.4	1532.7	0	0	0	0	0	0
10	Fischer ,C (Carlanda)	2	1	0	2	1	0	0	0	0	0	0	0
10	Fischer ,C (Carlanda)	2	1158.4	1158.4	2	1144.8	1158.4	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

Claassen, J (Joshua)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms