Chess South Africa Ratings Database

PLAYER PAGE

Personal

Claassen, A (Arno)

Chess SA id

1110312150

FIDE id

Date of birth

2011-05-28 (U16)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1331.4

Item	Main	Standard	Rapid	Blitz
Rating	1255.1	1265.6	1200	1200
Raw rating	1255.1	1265.6	1200	1200
Weighted rating	1218	1220.8	1200	1200
Weighted performance	0	0	0	0
Floor	755.1	765.6	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	153.3	151	165.8	165.8
Highest rating	1257.7 2024-10-01	1265.6 2025-11-01	1200 2024-10-01	1200 2024-10-01
Highest raw rating	1255.1 2025-11-01	1265.6 2025-11-01	1200 2024-10-01	1200 2024-10-01
Highest weighted rating	1218 2025-11-01	1220.8 2025-11-01	1200 2024-10-01	1200 2024-10-01
Highest weighted performance	1257.7 2024-10-01	1255.7 2024-10-01	1200 2024-10-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1255.1	1265.6	1200	1200
Analysis
Rating	1255.1	1265.6	1200	1200
Raw rating	1255.1	1265.6	1200	1200
Weighted rating	1218	1220.8	1200
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	755.1	765.6	700	700
Max/Min rating change allowed	153.3	151	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	1255.1	1265.6	1200	1200
New weighted rating	1221.5	1225	1200	1200
New weighted performance	0	0	0	0
Temp new rating	1255.1	1265.6	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1255.1	1265.6	1200	1200
New K-factor	36	36	36	36
New floor	755.1	765.6	700	700

Item	Main	Standard
	0	0
	16	16
	5	5
	0	0
	0	0
	0	0
History	21	21

Games since
	Main 21	Standard 21		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
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	16	9	56.25	53.1	1263.8	1316.9
Standard	16	9	56.25	53.1	1263.8	1316.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	21	11	52.38	20.2	1282.3	1302.5
Standard	21	11	52.38	20.2	1282.3	1302.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1255.1	1265.6	1200	1200
2025-09-30	1240.8	1247.9	1200	1200
2025-09-01	1240.8	1247.9	1200	1200
2025-08-01	1240.8	1247.9	1200	1200
2025-07-01	1209.6	1210.4	1200	1200
2025-06-01	1209.6	1210.4	1200	1200
2025-05-01	1209.6	1210.4	1200	1200
2025-04-01	1209.6	1210.4	1200	1200
2025-03-01	1209.6	1210.4	1200	1200
2025-02-01	1209.6	1210.4	1200	1200
2025-01-01	1209.6	1210.4	1200	1200
2024-12-01	1209.6	1210.4	1200	1200
2024-11-01	1209.6	1210.4	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	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	2025 Gauteng Top Schools Teams (U15)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	Paarl Boys' High School Chess Festival 2025 (C)	2025-10-17	2025-10-18	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	2025 D2 Schools League Finals (U15)	2025-07-26	2025-07-26	Standard	West Rand (GWR)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Gauteng Top Schools Teams (U15)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	Paarl Boys' High School Chess Festival 2025 (C)	2025-10-17	2025-10-18	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
3	2025 D2 Schools League Finals (U15)	2025-07-26	2025-07-26	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
4	Gauteng Top Schools 2024 (U13 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2025 D2 Schools League Finals				Tournament 2025 Gauteng Top Schools Teams
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-08-30	rnd 1	type Standard	result 1
		Opponent Moruledi, N (Naledi)				Opponent Malepa, K (Kekaetswe)
2	3	Tournament 2025 Gauteng Top Schools Teams				Tournament Paarl Boys' High School Chess Festival 2025
		date 2025-08-30	rnd 4	type Standard	result 1	date 2025-10-17	rnd 1	type Standard	result 1
		Opponent Jikinqina, S (Simphiwe Zusakhe)				Opponent Schepers, D (Deegan)
3	2	Tournament Paarl Boys' High School Chess Festival 2025				Tournament Paarl Boys' High School Chess Festival 2025
		date 2025-10-17	rnd 3	type Standard	result 1	date 2025-10-17	rnd 4	type Standard	result 1
		Opponent Joseph, C (Chlo� Elizabeth)				Opponent Hammond-Aryee, Z (Zaffery)

#	Games	Start				End
1	3	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Moruledi, N (Naledi)				Opponent Viljoen, J (Johandre)
2	2	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-04	rnd 4	type Standard	result 1
		Opponent Myburgh, V (Vaughn)				Opponent Jonker, R (Reagan)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Moruledi, N (Naledi)				Opponent Viljoen, J (Johandre)
2	2	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-04	rnd 4	type Standard	result 1
		Opponent Myburgh, V (Vaughn)				Opponent Jonker, R (Reagan)

#	Games	Start				End
1	3	Tournament 2025 D2 Schools League Finals				Tournament 2025 D2 Schools League Finals
		date 2025-07-26	rnd 3	type Standard	result 1	date 2025-07-26	rnd 5	type Standard	result 1
		Opponent Moruledi, N (Naledi)				Opponent Viljoen, J (Johandre)
2	2	Tournament Gauteng Top Schools 2024				Tournament Gauteng Top Schools 2024
		date 2024-10-04	rnd 3	type Standard	result 1	date 2024-10-04	rnd 4	type Standard	result 1
		Opponent Myburgh, V (Vaughn)				Opponent Jonker, R (Reagan)

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	Ndlovu ,S (Siphesihle)	1	0	-425	1	0	-425	0	0	0	0	0	0
1	Ndlovu ,S (Siphesihle)	1	1200	775	1	1200	775	0	0	0	0	0	0
2	Limba ,N (Neo)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Limba ,N (Neo)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Joseph ,C (Chlo� Elizabeth)	1	1	425	1	1	425	0	0	0	0	0	0
3	Joseph ,C (Chlo� Elizabeth)	1	1268.6	1693.6	1	1314.8	1693.6	0	0	0	0	0	0
4	Pengele ,M (Mboyo Belesi)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Pengele ,M (Mboyo Belesi)	1	1276.5	851.5	1	1268.4	851.5	0	0	0	0	0	0
5	Jonker ,T (Tertius)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Jonker ,T (Tertius)	1	1399.7	974.7	1	1381.6	974.7	0	0	0	0	0	0
6	Jonker ,R (Reagan)	1	1	425	1	1	425	0	0	0	0	0	0
6	Jonker ,R (Reagan)	1	1332.5	1757.5	1	1320.8	1757.5	0	0	0	0	0	0
7	Semwogerere ,J (Joseph)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Semwogerere ,J (Joseph)	1	1383.1	958.1	1	1412.2	958.1	0	0	0	0	0	0
8	Myburgh ,V (Vaughn)	1	1	425	1	1	425	0	0	0	0	0	0
8	Myburgh ,V (Vaughn)	1	1370.9	1795.9	1	1367.6	1795.9	0	0	0	0	0	0
9	Tisana ,K (Kwazokuhle)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Tisana ,K (Kwazokuhle)	1	1153.4	728.4	1	1200	728.4	0	0	0	0	0	0
10	Mothupi ,R (Reotshepile)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Mothupi ,R (Reotshepile)	1	1173.8	748.8	1	1173.1	748.8	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

Claassen, A (Arno)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms