Chess South Africa Ratings Database

PLAYER PAGE

Personal

Amsterdam, J (Jodan)

Chess SA id

1120137590

FIDE id

Date of birth

2012-12-18 (U14)

Gender

Male

Region

Cape Winelands (WCW)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-16

Personal details last changed

1900-01-01

Junior GPX Games

26.7

Junior GPX Points

1339.5

Item	Main	Standard	Rapid	Blitz
Rating	1426.6	1382.9	1342.8	1200
Raw rating	1426.6	1382.9	1342.8	1200
Weighted rating	1347.4	1307.4	1304.9	1200
Weighted performance	1366.9	1323.5	1222.7	0
Floor	926.9	897.6	842.8	700
K-factor	32	36	36	36
Min/Max rating change allowed	120.1	127.8	135.3	165.8
Highest rating	1426.9 2025-04-01	1397.6 2025-04-01	1342.8 2025-09-01	1200 2018-10-01
Highest raw rating	1426.9 2025-04-01	1397.6 2025-04-01	1342.8 2025-09-01	1200 2024-02-01
Highest weighted rating	1336.5 2025-09-01	1397.6 2018-10-01	1300.9 2025-09-01	1200 2018-10-01
Highest weighted performance	1426.9 2025-04-01	1397.6 2024-11-01	1328.4 2023-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1426.6	1382.9	1342.8	1200
Analysis
Rating	1426.6	1382.9	1342.8	1200
Raw rating	1426.6	1382.9	1342.8	1200
Weighted rating	1347.4	1307.4	1304.9
Weighted performance	1366.9	1323.5	1222.7
K-factor	32	36	36	36
Floor	926.9	897.6	842.8	700
Max/Min rating change allowed	120.1	127.8	135.3	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	1426.6	1382.9	1342.8	1200
New weighted rating	1357.5	1318.2	1308.8	1200
New weighted performance	1366.4	1323	1222.2	0
Temp new rating	1426.6	1382.9	1342.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1426.6	1382.9	1342.8	1200
New K-factor	32	36	36	36
New floor	926.9	897.6	842.8	700

Item	Main	Standard	Rapid
	0	0	0
	21	16	5
	38	26	12
	27	16	11
	10	6	4
	0	0	0
History	96	64	32

Games since
	Main 65	Standard 42		Rapid 23		Blitz 0
Gender	Male
Age group	U14
Region	Cape Winelands (WCW)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	1902		575		89
Male	1589		463		69
U14	293		95		14
U14 Male	224		68		9
Standard
	RSA		Province		Region
Overall	2230		608		87
Male	1821		464		65
U14	377		112		16
U14 Male	277		72		10
Rapid
	RSA		Province		Region
Overall	774		398		62
Male	643		327		47
U14	160		88		15
U14 Male	121		67		10
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	21	14.5	69.05	161.9	1307.4	1469.3
Standard	16	10.5	65.62	132.8	1323.2	1456
Rapid	5	4	80	255	1256.9	1511.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	96	51.5	53.65	31	1273.4	1304.4
Standard	64	31.5	49.22	-6.6	1282.6	1276
Rapid	32	20	62.5	106.2	1254.9	1361.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1426.6	1382.9	1342.8	1200
2025-09-01	1426.6	1382.9	1342.8	1200
2025-08-01	1414.1	1382.9	1306.8	1200
2025-07-01	1414.1	1382.9	1306.8	1200
2025-06-01	1414.1	1382.9	1306.8	1200
2025-05-01	1426.9	1397.6	1306.8	1200
2025-04-01	1426.9	1397.6	1306.8	1200
2025-03-01	1346.2	1322.9	1306.8	1200
2025-02-01	1315.8	1287.5	1306.8	1200
2025-01-01	1315.8	1287.5	1306.8	1200
2024-12-01	1315.8	1287.5	1306.8	1200
2024-11-01	1315.8	1287.5	1306.8	1200
2024-10-01	1247.6	1205.9	1278.4	1200
2024-09-01	1247.6	1205.9	1278.4	1200
2024-08-01	1223.7	1169.5	1278.4	1200
2024-07-01	1264.9	1218.8	1278.4	1200
2024-06-01	1264.9	1218.8	1278.4	1200
2024-08-01	1205.7	1116.4	1278.4	1200
2024-04-01	1205.7	1116.4	1278.4	1200
2024-03-01	1208.1	1103.6	1278.4	1200
2024-02-01	1192.9	1103.6	1274.1	1200
2024-01-01	1192.9	1103.6	1274.1	1200
2023-12-01	1192.9	1103.6	1274.1	1200
2023-11-01	1192.9	1103.6	1274.1	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	De Villiers PS 2025 (U14+High School Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U13 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
3	Cape Winelands Schools Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
4	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	De Villiers PS 2025 (U14+High School Boys)	2025-08-16	2025-08-16	Rapid	Cape Winelands (WCW)	5	5	4	Yes	Analysis
2	Western Cape Schools Individual Championship 2025 (U13 Boys)	2025-05-17	2025-05-18	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
3	Cape Winelands Schools Prestige 2025 (U13 Boys)	2025-03-08	2025-03-08	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
4	Cape Winelands Schools - Trials 1 2025 (U13 Boys)	2025-02-22	2025-02-22	Standard	Cape Winelands (WCW)	5	5	4	Yes	Analysis
5	Worcester Knock-Out 2024 (U13 Boys)	2024-10-19	2024-10-19	Rapid	Cape Winelands (WCW)	6	6	4	Yes	Analysis
6	Strategema Chess October 2024 (U13)	2024-10-05	2024-10-05	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
7	De Villiers PS Tournament 2024 (U14)	2024-08-17	2024-08-17	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
8	Cape Winelands - Top Schools 2024 (U13 Mixed)	2024-07-27	2024-07-27	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis
9	Worcester PS League 2024 (U13)	2024-04-27	2024-04-27	Standard	Cape Winelands (WCW)	7	6	5	Yes	Analysis
10	Cape Winelands Schools - Prestige 2024 (U13 Boys)	2024-03-02	2024-03-02	Standard	Cape Winelands (WCW)	5	5	2	Yes	Analysis
11	Cape Winelands Schools - PS Trials 1 2024 (U13 Boys)	2024-02-10	2024-02-10	Rapid	Cape Winelands (WCW)	6	6	3	Yes	Analysis
12	Worcester Knock-Out 2023 (U11 Boys)	2023-10-14	2023-10-14	Rapid	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
13	Western Cape Top Schools 2023 (U11 Mixed)	2023-09-02	2023-09-03	Standard	Cape Winelands (WCW)	6	6	0.5	Yes	Analysis
14	CW Top Schools 2023 (U7-U11 Mixed + U11 Girls)	2023-08-26	2023-08-26	Rapid	Cape Winelands (WCW)	5	5	4.5	Yes	Analysis
15	Cape Winelands Schools Prestige 2023 (U11 Boys)	2023-03-11	2023-03-11	Standard	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
16	Cape Winelands Schools Chess - Trials 1 2023 (U11 Boys)	2023-02-18	2023-02-18	Standard	Cape Winelands (WCW)	5	5	2.5	Yes	Analysis
17	Worcester Primary School League 2022 (U11)	2022-05-21	2022-05-21	Standard	Cape Winelands (WCW)	6	6	2.5	Yes	Analysis
18	Worcester Schools Trials 2022 (U11 Boys)	2022-02-19	2022-02-19	Rapid	Cape Winelands (WCW)	5	4	1	Yes	Analysis

#	Games	Start				End
1	7	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Jonkers, C (Cyrus)
2	7	Tournament Cape Winelands Schools Prestige 2023				Tournament CW Top Schools 2023
		date 2023-03-11	rnd 4	type Standard	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Ockhuis, C (Christiaan)				Opponent Fortuin, L (Liam)
3	5	Tournament Worcester PS League 2024				Tournament Worcester PS League 2024
		date 2024-04-27	rnd 1	type Standard	result 1	date 2024-04-27	rnd 6	type Standard	result 1
		Opponent Muvumbi, L (Leeroy)				Opponent Le Roux, J (Joss)

#	Games	Start				End
1	7	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Jonkers, C (Cyrus)
2	5	Tournament Worcester PS League 2024				Tournament Worcester PS League 2024
		date 2024-04-27	rnd 1	type Standard	result 1	date 2024-04-27	rnd 6	type Standard	result 1
		Opponent Muvumbi, L (Leeroy)				Opponent Le Roux, J (Joss)
3	4	Tournament De Villiers PS Tournament 2024				Tournament Strategema Chess October 2024
		date 2024-08-17	rnd 3	type Standard	result 1	date 2024-10-05	rnd 1	type Standard	result 1
		Opponent Joseph, V (Valdemiro)				Opponent Klopper, M (Marli)

#	Games	Start				End
1	6	Tournament CW Top Schools 2023				Tournament Worcester Knock-Out 2023
		date 2023-08-26	rnd 1	type Rapid	result 0.5	date 2023-10-14	rnd 1	type Rapid	result 0.5
		Opponent Joel, R (Roneeq)				Opponent Cornelius, L (Laythan)
2	3	Tournament De Villiers PS 2025				Tournament De Villiers PS 2025
		date 2025-08-16	rnd 3	type Rapid	result 1	date 2025-08-16	rnd 5	type Rapid	result 1
		Opponent Brandt, C (Cayden)				Opponent Scheepers, G (Gabriel)
3	3	Tournament Worcester Knock-Out 2023				Tournament Worcester Knock-Out 2023
		date 2023-10-14	rnd 3	type Rapid	result 1	date 2023-10-14	rnd 5	type Rapid	result 1
		Opponent Le Roux, A (Alexander)				Opponent Jaftha, H (Henrickquin Conary)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Worcester PS League 2024				Tournament Worcester PS League 2024
		date 2024-04-27	rnd 1	type Standard	result 1	date 2024-04-27	rnd 6	type Standard	result 1
		Opponent Muvumbi, L (Leeroy)				Opponent Le Roux, J (Joss)
2	4	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Da Silva, N (Noah Clint)				Opponent Fortuin, L (Liam)
3	3	Tournament De Villiers PS 2025				Tournament De Villiers PS 2025
		date 2025-08-16	rnd 3	type Rapid	result 1	date 2025-08-16	rnd 5	type Rapid	result 1
		Opponent Brandt, C (Cayden)				Opponent Scheepers, G (Gabriel)

#	Games	Start				End
1	5	Tournament Worcester PS League 2024				Tournament Worcester PS League 2024
		date 2024-04-27	rnd 1	type Standard	result 1	date 2024-04-27	rnd 6	type Standard	result 1
		Opponent Muvumbi, L (Leeroy)				Opponent Le Roux, J (Joss)
2	3	Tournament Cape Winelands Schools - Trials 1 2025				Tournament Cape Winelands Schools Prestige 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 1	type Standard	result 1
		Opponent Arendse, A (Ashton Lee)				Opponent Makone, E (Ethan)
3	3	Tournament Worcester Primary School League 2022				Tournament Cape Winelands Schools Chess - Trials 1 2023
		date 2022-05-21	rnd 6	type Standard	result 1	date 2023-02-18	rnd 2	type Standard	result 1
		Opponent Smith, N (Nehe-Mia)				Opponent Koert, D (Dane)

#	Games	Start				End
1	4	Tournament CW Top Schools 2023				Tournament CW Top Schools 2023
		date 2023-08-26	rnd 2	type Rapid	result 1	date 2023-08-26	rnd 5	type Rapid	result 1
		Opponent Da Silva, N (Noah Clint)				Opponent Fortuin, L (Liam)
2	3	Tournament De Villiers PS 2025				Tournament De Villiers PS 2025
		date 2025-08-16	rnd 3	type Rapid	result 1	date 2025-08-16	rnd 5	type Rapid	result 1
		Opponent Brandt, C (Cayden)				Opponent Scheepers, G (Gabriel)
3	3	Tournament Worcester Knock-Out 2023				Tournament Worcester Knock-Out 2023
		date 2023-10-14	rnd 3	type Rapid	result 1	date 2023-10-14	rnd 5	type Rapid	result 1
		Opponent Le Roux, A (Alexander)				Opponent Jaftha, H (Henrickquin Conary)

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	Le Roux ,J (Joss)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
1	Le Roux ,J (Joss)	3	1194.2	1194.2	3	1194.1	1194.2	0	0	0	0	0	0
2	Mcleod ,N (Ney-Shawn)	3	0.5	-283.3	2	0.5	-212.5	1	0	-425	0	0	0
2	Mcleod ,N (Ney-Shawn)	3	1215.2	931.8	2	1238.2	1002.7	1	1200	790.2	0	0	0
3	Cornelius ,L (Laythan)	3	1.5	0	2	1	0	1	0.5	0	0	0	0
3	Cornelius ,L (Laythan)	3	1465	1465	2	1381.4	1465	1	1332.4	1465	0	0	0
4	Smith ,N (Nehe-Mia)	2	1	0	2	1	0	0	0	0	0	0	0
4	Smith ,N (Nehe-Mia)	2	1150.6	1150.6	2	1144	1150.6	0	0	0	0	0	0
5	Smith ,J (James)	2	1	0	2	1	0	0	0	0	0	0	0
5	Smith ,J (James)	2	1321.7	1321.7	2	1305.6	1321.7	0	0	0	0	0	0
6	Wentzel ,C (Cruxnielle)	2	1	0	2	1	0	0	0	0	0	0	0
6	Wentzel ,C (Cruxnielle)	2	1180.4	1180.4	2	1180	1180.4	0	0	0	0	0	0
7	De Villiers ,M (Malan)	2	1	0	2	1	0	0	0	0	0	0	0
7	De Villiers ,M (Malan)	2	1221.4	1221.4	2	1205.8	1221.4	0	0	0	0	0	0
8	Makone ,E (Ethan)	2	2	425	1	1	425	1	1	425	0	0	0
8	Makone ,E (Ethan)	2	1210.1	1635.1	1	1229.9	1635.1	1	1200	1635.1	0	0	0
9	Brandt ,C (Cayden)	2	1	0	1	0	-425	1	1	425	0	0	0
9	Brandt ,C (Cayden)	2	1383.8	1383.8	1	1291.4	958.8	1	1264.8	1808.8	0	0	0
10	Radloff ,H (Hunther)	2	0	-425	1	0	-425	1	0	-425	0	0	0
10	Radloff ,H (Hunther)	2	1403.1	978.1	1	1300.7	978.1	1	1318.9	978.1	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Amsterdam, J (Jodan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms