Chess South Africa Ratings Database

PLAYER PAGE

Personal

Ackerman, J (Joshua)

Chess SA id

1080301060

FIDE id

Date of birth

2008-12-12 (U18)

Gender

Male

Region

West Rand (GWR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-06

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1323.5

Item	Main	Standard	Rapid	Blitz
Rating	1281	1290.1	1200	1200
Raw rating	1281	1290.1	1200	1200
Weighted rating	1236	1242.8	1200	1200
Weighted performance	1267.7	1265.1	0	0
Floor	806.4	823.3	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	147.7	145.8	165.8	165.8
Highest rating	1315.6 2025-09-01	1323.3 2025-09-01	1200 2024-04-01	1200 2024-04-01
Highest raw rating	1306.4 2025-09-01	1323.3 2025-09-01	1200 2024-04-01	1200 2024-04-01
Highest weighted rating	1266.1 2024-03-01	1280.8 2024-03-01	1200 2024-04-01	1200 2024-04-01
Highest weighted performance	1315.6 2025-09-01	1314.9 2025-09-01	1200 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1281	1290.1	1200	1200
Analysis
Rating	1281	1290.1	1200	1200
Raw rating	1281	1290.1	1200	1200
Weighted rating	1236	1242.8	1200
Weighted performance	1267.7	1265.1	0
K-factor	36	36	36	36
Floor	806.4	823.3	700	700
Max/Min rating change allowed	147.7	145.8	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	1281	1290.1	1200	1200
New weighted rating	1241	1248.2	1200	1200
New weighted performance	1259.9	1257.4	0	0
Temp new rating	1281	1290.1	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1281	1290.1	1200	1200
New K-factor	36	36	36	36
New floor	806.4	823.3	700	700

Item	Main	Standard
	0	0
	20	20
	18	18
	0	0
	0	0
	0	0
History	38	38

Games since
	Main 38	Standard 38		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	West Rand (GWR)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	3271		1176		112
Male	2556		921		85
U18	523		197		22
U18 Male	432		162		18
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	20	10.5	52.5	21.2	1331.5	1352.8
Standard	20	10.5	52.5	21.2	1331.5	1352.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	38	18.5	48.68	-11.2	1295.4	1284.2
Standard	38	18.5	48.68	-11.2	1295.4	1284.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1281	1290.1	1200	1200
2025-09-30	1281	1290.1	1200	1200
2025-09-01	1306.4	1323.3	1200	1200
2025-08-01	1266.1	1280.8	1200	1200
2025-07-01	1266.1	1280.8	1200	1200
2025-06-01	1266.1	1280.8	1200	1200
2025-05-01	1266.1	1280.8	1200	1200
2025-04-01	1196	1196.5	1200	1200
2025-03-01	1199.7	1201.5	1200	1200
2025-02-01	1199.7	1201.5	1200	1200
2025-01-01	1199.7	1201.5	1200	1200
2024-12-01	1199.7	1201.5	1200	1200
2024-11-01	1199.7	1201.5	1200	1200
2024-10-01	1222.7	1227.4	1200	1200
2024-09-01	1220.6	1225.6	1200	1200
2024-08-01	1174.8	1171.2	1200	1200
2024-07-01	1174.8	1171.2	1200	1200
2024-09-01	1174.8	1171.2	1200	1200
2024-05-01	1174.8	1171.2	1200	1200
2024-04-01	1174.8	1171.2	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	West Rand Trials 2025 (U18)	2025-09-06	2025-09-06	Standard	West Rand (GWR)	5	5	1	Yes	Analysis
2	West Rand Women's Day Open 2025 (Rooks)	2025-08-09	2025-08-09	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
3	FIDE in The West 2025 (Bishops)	2025-04-12	2025-04-12	Standard	West Rand (GWR)	5	5	4.5	Yes	Analysis
4	West Rand Juniors 2025 (U18)	2025-03-08	2025-03-08	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
5	2025 West Rand Open (Rooks)	2025-02-08	2025-02-08	Standard	West Rand (GWR)	5	0	0	No	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	West Rand Trials 2025 (U18)	2025-09-06	2025-09-06	Standard	West Rand (GWR)	5	5	1	Yes	Analysis
2	West Rand Women's Day Open 2025 (Rooks)	2025-08-09	2025-08-09	Standard	West Rand (GWR)	5	5	3	Yes	Analysis
3	FIDE in The West 2025 (Bishops)	2025-04-12	2025-04-12	Standard	West Rand (GWR)	5	5	4.5	Yes	Analysis
4	West Rand Juniors 2025 (U18)	2025-03-08	2025-03-08	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
5	2025 West Rand Open (Rooks)	2025-02-08	2025-02-08	Standard	West Rand (GWR)	5	0	0	No	Analysis
6	2024 West Rand Closed (U18)	2024-10-12	2024-10-12	Standard	West Rand (GWR)	5	4	0.5	Yes	Analysis
7	2024 West Rand Trials (U18)	2024-09-07	2024-09-07	Standard	West Rand (GWR)	5	5	2	Yes	Analysis
8	2024 West Rand Rappies Open (Bishops)	2024-08-03	2024-08-03	Standard	West Rand (GWR)	5	5	4	Yes	Analysis
9	2024 West Rand Juniors (U18)	2024-03-09	2024-03-09	Standard	West Rand (GWR)	5	4	1.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament FIDE in The West 2025				Tournament West Rand Women's Day Open 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent De Jager, L (Luado)				Opponent Lekoma, A (Amogelang)
2	4	Tournament 2024 West Rand Rappies Open				Tournament 2024 West Rand Rappies Open
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Keepilwe, O (Ofentse Victoria)				Opponent Van Vollenhoven, R (Reuben Francois)
3	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Women's Day Open 2025
		date 2025-08-09	rnd 4	type Standard	result 1	date 2025-08-09	rnd 5	type Standard	result 1
		Opponent Songoane, S (Sifiso)				Opponent Van Staden, J (Jenna)

#	Games	Start				End
1	6	Tournament FIDE in The West 2025				Tournament West Rand Women's Day Open 2025
		date 2025-04-12	rnd 1	type Standard	result 0.5	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent De Jager, L (Luado)				Opponent Lekoma, A (Amogelang)
2	4	Tournament 2024 West Rand Rappies Open				Tournament 2024 West Rand Rappies Open
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Keepilwe, O (Ofentse Victoria)				Opponent Van Vollenhoven, R (Reuben Francois)
3	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Women's Day Open 2025
		date 2025-08-09	rnd 4	type Standard	result 1	date 2025-08-09	rnd 5	type Standard	result 1
		Opponent Songoane, S (Sifiso)				Opponent Van Staden, J (Jenna)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament FIDE in The West 2025				Tournament West Rand Women's Day Open 2025
		date 2025-04-12	rnd 2	type Standard	result 1	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Corneelson, R (Rygardt)				Opponent Lekoma, A (Amogelang)
2	4	Tournament 2024 West Rand Rappies Open				Tournament 2024 West Rand Rappies Open
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Keepilwe, O (Ofentse Victoria)				Opponent Van Vollenhoven, R (Reuben Francois)
3	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Women's Day Open 2025
		date 2025-08-09	rnd 4	type Standard	result 1	date 2025-08-09	rnd 5	type Standard	result 1
		Opponent Songoane, S (Sifiso)				Opponent Van Staden, J (Jenna)

#	Games	Start				End
1	5	Tournament FIDE in The West 2025				Tournament West Rand Women's Day Open 2025
		date 2025-04-12	rnd 2	type Standard	result 1	date 2025-08-09	rnd 1	type Standard	result 1
		Opponent Corneelson, R (Rygardt)				Opponent Lekoma, A (Amogelang)
2	4	Tournament 2024 West Rand Rappies Open				Tournament 2024 West Rand Rappies Open
		date 2024-08-03	rnd 2	type Standard	result 1	date 2024-08-03	rnd 5	type Standard	result 1
		Opponent Keepilwe, O (Ofentse Victoria)				Opponent Van Vollenhoven, R (Reuben Francois)
3	2	Tournament West Rand Women's Day Open 2025				Tournament West Rand Women's Day Open 2025
		date 2025-08-09	rnd 4	type Standard	result 1	date 2025-08-09	rnd 5	type Standard	result 1
		Opponent Songoane, S (Sifiso)				Opponent Van Staden, J (Jenna)

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	Udodi ,E (Edubechukwu)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Udodi ,E (Edubechukwu)	2	1444.4	1019.4	2	1431.6	1019.4	0	0	0	0	0	0
2	Idehen ,M (Michael)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Idehen ,M (Michael)	2	1368.2	943.2	2	1384.9	943.2	0	0	0	0	0	0
3	Arlow ,JF (Jonathan)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Arlow ,JF (Jonathan)	2	1298.2	873.2	2	1296.2	873.2	0	0	0	0	0	0
4	Corneelson ,R (Rygardt)	1	1	425	1	1	425	0	0	0	0	0	0
4	Corneelson ,R (Rygardt)	1	1212	1637	1	1216.5	1637	0	0	0	0	0	0
5	Sibeko ,N (Njabulo Kamogelo)	1	1	425	1	1	425	0	0	0	0	0	0
5	Sibeko ,N (Njabulo Kamogelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Van Staden ,J (Jenna)	1	1	425	1	1	425	0	0	0	0	0	0
6	Van Staden ,J (Jenna)	1	1347.2	1772.2	1	1353.9	1772.2	0	0	0	0	0	0
7	Ngobeni ,N (Ntumbuluko)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Ngobeni ,N (Ntumbuluko)	1	1349.3	924.3	1	1321.3	924.3	0	0	0	0	0	0
8	Mojaki ,T (Tshegofatso)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mojaki ,T (Tshegofatso)	1	1249.3	824.3	1	1249.3	824.3	0	0	0	0	0	0
9	Lekoma ,A (Amogelang)	1	1	425	1	1	425	0	0	0	0	0	0
9	Lekoma ,A (Amogelang)	1	1446.6	1871.6	1	1377.9	1871.6	0	0	0	0	0	0
10	Rankin ,L (Lara)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Rankin ,L (Lara)	1	751.6	751.6	1	785.8	751.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Ackerman, 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