Chess South Africa Ratings Database

PLAYER PAGE

Personal

Claassen, D (David Christian)

Chess SA id

1110156834

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

1900-01-01

Junior GPX Games

Junior GPX Points

1240.2

Item	Main	Standard	Rapid	Blitz
Rating	1191.1	1190.5	1200	1200
Raw rating	1191.1	1190.5	1200	1200
Weighted rating	1176.3	1176.2	1200	1200
Weighted performance	1184.3	1184.7	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	167.9	168.1	165.8	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1191.1	1190.5	1200	1200
Analysis
Rating	1191.1	1190.5	1200	1200
Raw rating	1191.1	1190.5	1200	1200
Weighted rating	1176.3	1176.2	1200
Weighted performance	1184.3	1184.7	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	167.9	168.1	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	1191.1	1190.5	1200	1200
New weighted rating	1177.8	1177.8	1200	1200
New weighted performance	1183.9	1184.3	0	0
Temp new rating	1191.1	1190.5	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1191.1	1190.5	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	18	18
	20	20
	9	9
	0	0
	0	0
History	47	47

Games since
	Main 38	Standard 38		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Pixley-ka-Seme (NCP)
Province	Northern Cape (NC)
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	4009		144		33
Male	2999		111		23
U16	649		34		9
U16 Male	455		25		4
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	7	38.89	-94.4	1279.6	1185.2
Standard	18	7	38.89	-94.4	1279.6	1185.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	47	20	42.55	-63.3	1231.9	1168.6
Standard	47	20	42.55	-63.3	1231.9	1168.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1191.1	1190.5	1200	1200
2025-09-01	1191.1	1190.5	1200	1200
2025-08-01	1177.5	1179.5	1200	1200
2025-07-01	1177.5	1179.5	1200	1200
2025-06-01	1177.5	1179.5	1200	1200
2025-05-01	1177.5	1179.5	1200	1200
2025-04-01	1177.5	1179.5	1200	1200
2025-03-01	1177.5	1179.5	1200	1200
2025-02-01	1181.7	1184.9	1200	1200
2025-01-01	1181.7	1184.9	1200	1200
2024-12-01	1181.7	1184.9	1200	1200
2024-11-01	1181.7	1184.9	1200	1200
2024-10-01	1145.4	1139.9	1200	1200
2024-09-01	1145.4	1139.9	1200	1200
2024-08-01	1157.9	1152.1	1200	1200
2024-07-01	1172.4	1167.6	1200	1200
2024-06-01	1172.4	1167.6	1200	1200
2024-08-01	1172.4	1167.6	1200	1200
2024-04-01	1172.4	1167.6	1200	1200
2024-03-01	1172.4	1167.6	1200	1200
2024-02-01	1172.4	1167.6	1200	1200
2024-01-01	1157.6	1150.7	1200	1200
2023-12-01	1157.6	1150.7	1200	1200
2023-11-01	1157.6	1150.7	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	4	2	Yes	Analysis
2	De Aar Primary School 2025 (U14)	2025-08-16	2025-08-16	Standard	Pixley-ka-Seme (NCP)	5	5	2	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	5	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	4	2	Yes	Analysis
2	De Aar Primary School 2025 (U14)	2025-08-16	2025-08-16	Standard	Pixley-ka-Seme (NCP)	5	5	2	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	5	2	Yes	Analysis
5	2024 Hopetown Schools Chess Tournament (U13)	2024-10-12	2024-10-12	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
6	2024 NC Closed Chess Championships (U14 Open)	2024-08-23	2024-08-25	Standard	Frances Baard (NCF)	5	5	2	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	HSDA School Open 2024 (U12+U14)	2024-01-27	2024-01-27	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
9	HSDA Chess Club School Tournament 2023 (U12+U14)	2023-07-29	2023-07-29	Standard	Pixley-ka-Seme (NCP)	5	4	1	Yes	Analysis
10	Hopetown School Chess Open Tournament 2023 (U11+U13)	2023-05-06	2023-05-06	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	2	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-23	rnd 4	type Standard	result 1	date 2025-08-23	rnd 5	type Standard	result 1
		Opponent Chuma, N (Nicholus)				Opponent Matthys, A (Ayden)
2	2	Tournament De Aar Primary School 2025				Tournament De Aar Primary School 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Biko, L (Lihlumile)				Opponent Mitchell, L (Leche)
3	2	Tournament 2024 Hopetown Schools Chess Tournament				Tournament 2024 Hopetown Schools Chess Tournament
		date 2024-10-12	rnd 3	type Standard	result 1	date 2024-10-12	rnd 4	type Standard	result 1
		Opponent Pretorius, J (Johannes)				Opponent Potgieter, M (Martin-Juan)

#	Games	Start				End
1	2	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-23	rnd 4	type Standard	result 1	date 2025-08-23	rnd 5	type Standard	result 1
		Opponent Chuma, N (Nicholus)				Opponent Matthys, A (Ayden)
2	2	Tournament De Aar Primary School 2025				Tournament De Aar Primary School 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Biko, L (Lihlumile)				Opponent Mitchell, L (Leche)
3	2	Tournament 2024 Hopetown Schools Chess Tournament				Tournament 2024 Hopetown Schools Chess Tournament
		date 2024-10-12	rnd 3	type Standard	result 1	date 2024-10-12	rnd 4	type Standard	result 1
		Opponent Pretorius, J (Johannes)				Opponent Potgieter, M (Martin-Juan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-23	rnd 4	type Standard	result 1	date 2025-08-23	rnd 5	type Standard	result 1
		Opponent Chuma, N (Nicholus)				Opponent Matthys, A (Ayden)
2	2	Tournament De Aar Primary School 2025				Tournament De Aar Primary School 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Biko, L (Lihlumile)				Opponent Mitchell, L (Leche)
3	2	Tournament 2024 Hopetown Schools Chess Tournament				Tournament 2024 Hopetown Schools Chess Tournament
		date 2024-10-12	rnd 3	type Standard	result 1	date 2024-10-12	rnd 4	type Standard	result 1
		Opponent Pretorius, J (Johannes)				Opponent Potgieter, M (Martin-Juan)

#	Games	Start				End
1	2	Tournament Northern Cape Closed 202				Tournament Northern Cape Closed 202
		date 2025-08-23	rnd 4	type Standard	result 1	date 2025-08-23	rnd 5	type Standard	result 1
		Opponent Chuma, N (Nicholus)				Opponent Matthys, A (Ayden)
2	2	Tournament De Aar Primary School 2025				Tournament De Aar Primary School 2025
		date 2025-08-16	rnd 3	type Standard	result 1	date 2025-08-16	rnd 4	type Standard	result 1
		Opponent Biko, L (Lihlumile)				Opponent Mitchell, L (Leche)
3	2	Tournament 2024 Hopetown Schools Chess Tournament				Tournament 2024 Hopetown Schools Chess Tournament
		date 2024-10-12	rnd 3	type Standard	result 1	date 2024-10-12	rnd 4	type Standard	result 1
		Opponent Pretorius, J (Johannes)				Opponent Potgieter, M (Martin-Juan)

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	Biko ,L (Lihlumile)	4	4	425	4	4	425	0	0	0	0	0	0
1	Biko ,L (Lihlumile)	4	1132.8	1557.8	4	1127.3	1557.8	0	0	0	0	0	0
2	Pretorius ,J (Johannes)	3	3	425	3	3	425	0	0	0	0	0	0
2	Pretorius ,J (Johannes)	3	1176	1601	3	1178.2	1601	0	0	0	0	0	0
3	April ,SL (Swazi Laurian)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	April ,SL (Swazi Laurian)	3	1074.6	932.9	3	1072.8	932.9	0	0	0	0	0	0
4	Ngudle ,CE (Caelyn Ebenezer)	3	0	-425	3	0	-425	0	0	0	0	0	0
4	Ngudle ,CE (Caelyn Ebenezer)	3	1275.8	850.8	3	1285.4	850.8	0	0	0	0	0	0
5	Claassen ,J (Joshua)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
5	Claassen ,J (Joshua)	3	1207.5	1065.8	3	1208.9	1065.8	0	0	0	0	0	0
6	April ,CL (Cherise Lorcia)	2	1	0	2	1	0	0	0	0	0	0	0
6	April ,CL (Cherise Lorcia)	2	1255.8	1255.8	2	1258.4	1255.8	0	0	0	0	0	0
7	Potgieter ,M (Martin-Juan)	2	2	425	2	2	425	0	0	0	0	0	0
7	Potgieter ,M (Martin-Juan)	2	1173	1598	2	1174.8	1598	0	0	0	0	0	0
8	Botha ,A (Ane)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Botha ,A (Ane)	2	1126.4	701.4	2	1129.7	701.4	0	0	0	0	0	0
9	Matthys ,A (Ayden)	2	1	0	2	1	0	0	0	0	0	0	0
9	Matthys ,A (Ayden)	2	1440.7	1440.7	2	1448.9	1440.7	0	0	0	0	0	0
10	Rusford ,C (Chad Jason)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Rusford ,C (Chad Jason)	2	1494.5	1069.5	2	1478.3	1069.5	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, D (David Christian)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms