Chess South Africa Ratings Database

PLAYER PAGE

Personal

Williams, J (Joshua)

Chess SA id

1120132213

FIDE id

Date of birth

2012-02-23 (U14)

Gender

Male

Region

Johannesburg Metro (GJM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1376.7

Item	Main	Standard	Rapid	Blitz
Rating	1447.2	1440.5	1235.1	1168.2
Raw rating	1426	1405.1	1234.2	1168.2
Weighted rating	1447.2	1440.5	1235.1	1168
Weighted performance	1291.6	1290.2	0	0
Floor	1036.3	1034.6	750	700
K-factor	32	32	36	36
Min/Max rating change allowed	120.2	123.8	157.9	173.5
Highest rating	1536.3 2025-04-01	1534.6 2025-04-01	1449.8 2024-02-01	1200 2018-10-01
Highest raw rating	1536.3 2025-04-01	1534.6 2025-04-01	1250 2024-03-01	1200 2020-01-01
Highest weighted rating	1447.2 2025-11-01	1440.5 2025-11-01	1234.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1536.3 2025-04-01	1534.6 2024-04-01	1449.8 2024-02-01	1200 2020-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	1.1	-0.2	0.1	0
New rating	1448.3	1440.3	1235.2	1168.2
Analysis
Rating	1447.2	1440.5	1235.1	1168.2
Raw rating	1426	1405.1	1234.2	1168.2
Weighted rating	1447.2	1440.5	1235.1
Weighted performance	1291.6	1290.2	0
K-factor	32	32	36	36
Floor	1036.3	1034.6	750	700
Max/Min rating change allowed	120.2	123.8	157.9	173.5
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	1405.1	1234.2	1168.2
New weighted rating	1448.3	1440.3	1235.2	1168.1
New weighted performance	1283.8	1282.4	0	0
Temp new rating	1448.3	1440.3	1235.2	1168.2
Temp new rating +/-	1.1	-0.2	0.1	0
Final new rating +/-	1.1	-0.2	0.1	0
New rating	1448.3	1440.3	1235.2	1168.2
New K-factor	32	32	36	36
New floor	1036.3	1034.6	750	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	29	29	0	0
	57	45	12	0
	38	31	0	7
	20	20	0	0
	0	0	0	0
History	148	129	12	7

Games since
	Main 86	Standard 74		Rapid 12		Blitz 0
Gender	Male
Age group	U14
Region	Johannesburg Metro (GJM)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	1713		593		197
Male	1431		478		162
U14	256		82		26
U14 Male	196		58		18
Standard
	RSA		Province		Region
Overall	1680		623		198
Male	1390		504		162
U14	252		85		26
U14 Male	190		62		19
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
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	29	17.5	60.34	87.9	1359.4	1447.4
Standard	29	17.5	60.34	87.9	1359.4	1447.4
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	148	80	54.05	34.5	1281.9	1316.4
Standard	129	70.5	54.65	39.5	1275.5	1315
Rapid	12	6.5	54.17	35.4	1381.5	1416.9
Blitz	7	3	42.86	-60.7	1230.3	1169.6

Date	Main	Standard	Rapid	Blitz
2025-11-01	1426	1405.1	1234.2	1168.2
2025-09-30	1503.3	1495.7	1234.2	1168.2
2025-09-01	1503.3	1495.7	1234.2	1168.2
2025-08-01	1503.3	1495.7	1234.2	1168.2
2025-07-01	1503.3	1495.7	1234.2	1168.2
2025-06-01	1503.3	1495.7	1234.2	1168.2
2025-05-01	1536.3	1534.6	1234.2	1168.2
2025-04-01	1536.3	1534.6	1234.2	1168.2
2025-03-01	1427.3	1448.2	1234.2	1168.2
2025-02-01	1360.6	1351.2	1234.2	1168.2
2025-01-01	1360.6	1348.2	1234.2	1167.6
2024-12-01	1396.7	1393.6	1234.2	1167.6
2024-11-01	1396.7	1393.6	1234.2	1167.6
2024-10-01	1396.7	1393.6	1234.2	1167.6
2024-09-01	1396.7	1393.6	1234.2	1167.6
2024-08-01	1389.3	1381.7	1234.2	1167.6
2024-07-01	1399.2	1381.7	1250	1167.6
2024-09-01	1400.5	1380.3	1250	1167.6
2024-05-01	1409.8	1391.1	1250	1167.6
2024-04-01	1372.2	1356.8	1250	1167.6
2024-03-01	1308.7	1288.8	1250	1167.6
2024-02-01	1278.3	1288.8	1200	1167.6
2024-01-01	1289.9	1314	1200	1167.6
2023-12-01	1289.9	1314	1200	1167.6

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 (U13)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	2025 Gauteng Schools Provincial Individual Chess Championship (U13 Boys)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	JMC Crawford Sandton 2025 (B)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
4	MCA Summer March 2025 (Intermediate)	2025-03-08	2025-03-08	Standard	Johannesburg Metro (GJM)	5	4	4	Yes	Analysis
5	MCA Welcome 2025 (Intermediate)	2025-02-15	2025-02-15	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	JMC Kick Off 2025 (C)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	4	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 (U13)	2025-08-29	2025-08-29	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	2025 Gauteng Schools Provincial Individual Chess Championship (U13 Boys)	2025-09-27	2025-09-27	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	JMC Crawford Sandton 2025 (B)	2025-05-10	2025-05-10	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
4	MCA Summer March 2025 (Intermediate)	2025-03-08	2025-03-08	Standard	Johannesburg Metro (GJM)	5	4	4	Yes	Analysis
5	MCA Welcome 2025 (Intermediate)	2025-02-15	2025-02-15	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
6	JMC Kick Off 2025 (C)	2025-02-02	2025-02-02	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
7	Gauteng Inter-Region at UJ 2024 (U14 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
8	Fourth Knight Riders Juniors Open Chess Tournament 204 (C)	2024-08-03	2024-08-03	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
9	JNW Rapid - Helpmekaar Kollege 2024	2024-07-28	2024-07-28	Rapid	Johannesburg Metro (GJM)	7	7	2.5	Yes	Analysis
10	JMC Trinityhouse Little Falls 2024 (C)	2024-06-02	2024-06-02	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
11	JMC Helpmekaar Kollege Tournament 2024 (C)	2024-05-04	2024-05-04	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
12	First Knight Riders Junior Open 2024 (C)	2024-04-20	2024-04-20	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
13	JNW Open - Classic - Crawford 2024 (C)	2024-03-09	2024-03-09	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
14	JMC Unika School Tournament 2024 (D)	2024-03-02	2024-03-02	Standard	Johannesburg Metro (GJM)	5	5	4.5	Yes	Analysis
15	Gear Up Mzansi Rapid 2024 (Junior)	2024-02-17	2024-02-17	Rapid	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
16	2024 Gauteng Inter-Region Chess Championship (U12B)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
17	JMC Kick Off Tournament 2024 (D)	2024-01-28	2024-01-28	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
18	2023 Gauteng Top Schools (U11 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	5	3.5	Yes	Analysis
19	JMC Closed Aug 2023 (U12)	2023-08-04	2023-08-06	Standard	Johannesburg Metro (GJM)	6	6	3.5	Yes	Analysis
20	JMC Trinity Little Falls 2023 (D)	2023-07-02	2023-07-02	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
21	JNW Open - Trinityhouse Little Falls 2023 (C)	2023-06-24	2023-06-24	Standard	Johannesburg Metro (GJM)	5	5	2.5	Yes	Analysis
22	JMC Blitz - Higher Ground 2023	2023-06-17	2023-06-17	Blitz	Johannesburg Metro (GJM)	7	7	3	Yes	Analysis
23	JNW Open - Trinityhouse Little Falls 2023 (D)	2023-05-13	2023-05-13	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
24	Gauteng Schools Individual Finals 2023 (U11 Boys)	2023-05-26	2023-05-26	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
25	FNB Chessheroes Anity Bullying 2022 (U11)	2022-11-05	2022-11-05	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
26	Mzansi Spring Open 2022 (Young Masters)	2022-09-03	2022-09-03	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
27	JMC 3rd Trials 2022 (D)	2022-09-11	2022-09-11	Standard	Johannesburg Metro (GJM)	5	5	3	Yes	Analysis
28	JMC Womens Day 2022 (C)	2022-08-06	2022-08-07	Standard	Johannesburg Metro (GJM)	6	5	0	Yes	Analysis
29	JNW Club - Trinityhouse Randpark Ridge Open 2020 (E)	2020-02-22	2020-02-22	Standard	Johannesburg Metro (GJM)	5	4	1.5	Yes	Analysis

#	Games	Start				End
1	10	Tournament Gear Up Mzansi Rapid 2024				Tournament JNW Open - Classic - Crawford 2024
		date 2024-02-17	rnd 3	type Rapid	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Luo, Y (Yichen)				Opponent Deng, J (Jinyuan)
2	7	Tournament JMC Closed Aug 2023				Tournament 2023 Gauteng Top Schools
		date 2023-08-05	rnd 3	type Standard	result 1	date 2023-08-18	rnd 3	type Standard	result 1
		Opponent Strickler, L (Luke)				Opponent Monaheng, O (Ofentse)
3	5	Tournament JMC Kick Off 2025				Tournament MCA Welcome 2025
		date 2025-02-02	rnd 2	type Standard	result 1	date 2025-02-15	rnd 1	type Standard	result 1
		Opponent Burger, B (Benjamin)				Opponent Tenzer, A (Alexander)

#	Games	Start				End
1	7	Tournament JMC Unika School Tournament 2024				Tournament JNW Open - Classic - Crawford 2024
		date 2024-03-02	rnd 1	type Standard	result 1	date 2024-03-09	rnd 2	type Standard	result 1
		Opponent Van Der Merwe, R (Ruben)				Opponent Deng, J (Jinyuan)
2	7	Tournament JMC Closed Aug 2023				Tournament 2023 Gauteng Top Schools
		date 2023-08-05	rnd 3	type Standard	result 1	date 2023-08-18	rnd 3	type Standard	result 1
		Opponent Strickler, L (Luke)				Opponent Monaheng, O (Ofentse)
3	5	Tournament JMC Kick Off 2025				Tournament MCA Welcome 2025
		date 2025-02-02	rnd 2	type Standard	result 1	date 2025-02-15	rnd 1	type Standard	result 1
		Opponent Burger, B (Benjamin)				Opponent Tenzer, A (Alexander)

#	Games	Start				End
1	3	Tournament Gear Up Mzansi Rapid 2024				Tournament Gear Up Mzansi Rapid 2024
		date 2024-02-17	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 5	type Rapid	result 1
		Opponent Luo, Y (Yichen)				Opponent Upadhyay, S (Savya)
2	2	Tournament JNW Rapid - Helpmekaar Kollege 2024				Tournament JNW Rapid - Helpmekaar Kollege 2024
		date 2024-07-28	rnd 5	type Rapid	result 0.5	date 2024-07-28	rnd 6	type Rapid	result 1
		Opponent Thomson-Selibowitz, R (Ryder)				Opponent Moabi, O (Olerato)
3	1	Tournament JNW Rapid - Helpmekaar Kollege 2024				Tournament JNW Rapid - Helpmekaar Kollege 2024
		date 2024-07-28	rnd 2	type Rapid	result 1	date 2024-07-28	rnd 2	type Rapid	result 1
		Opponent Mangena, M (Marklee)				Opponent Mangena, M (Marklee)

#	Games	Start				End
1	1	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 7	type Blitz	result 1	date 2023-06-17	rnd 7	type Blitz	result 1
		Opponent Shezi, L (Luyanda)				Opponent Shezi, L (Luyanda)
2	1	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 5	type Blitz	result 1	date 2023-06-17	rnd 5	type Blitz	result 1
		Opponent Gerber, Z (Zoe)				Opponent Gerber, Z (Zoe)
3	1	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 3	type Blitz	result 1	date 2023-06-17	rnd 3	type Blitz	result 1
		Opponent Hlabangwane, N (Ntwanano)				Opponent Hlabangwane, N (Ntwanano)

#	Games	Start				End
1	6	Tournament Gear Up Mzansi Rapid 2024				Tournament JMC Unika School Tournament 2024
		date 2024-02-17	rnd 3	type Rapid	result 1	date 2024-03-02	rnd 3	type Standard	result 1
		Opponent Luo, Y (Yichen)				Opponent Gudladona, K (Kartikeya Praneeth)
2	5	Tournament JMC Kick Off 2025				Tournament MCA Welcome 2025
		date 2025-02-02	rnd 2	type Standard	result 1	date 2025-02-15	rnd 1	type Standard	result 1
		Opponent Burger, B (Benjamin)				Opponent Tenzer, A (Alexander)
3	4	Tournament MCA Summer March 2025				Tournament MCA Summer March 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Parboosing, A (Aryana)				Opponent Fauconier, A (Amber)

#	Games	Start				End
1	5	Tournament JMC Kick Off 2025				Tournament MCA Welcome 2025
		date 2025-02-02	rnd 2	type Standard	result 1	date 2025-02-15	rnd 1	type Standard	result 1
		Opponent Burger, B (Benjamin)				Opponent Tenzer, A (Alexander)
2	4	Tournament MCA Summer March 2025				Tournament MCA Summer March 2025
		date 2025-03-08	rnd 2	type Standard	result 1	date 2025-03-08	rnd 5	type Standard	result 1
		Opponent Parboosing, A (Aryana)				Opponent Fauconier, A (Amber)
3	4	Tournament First Knight Riders Junior Open 2024				Tournament First Knight Riders Junior Open 2024
		date 2024-04-20	rnd 2	type Standard	result 1	date 2024-04-20	rnd 5	type Standard	result 1
		Opponent Wang, Q (Qianfei)				Opponent Mankena, S (Satvik Ram)

#	Games	Start				End
1	3	Tournament Gear Up Mzansi Rapid 2024				Tournament Gear Up Mzansi Rapid 2024
		date 2024-02-17	rnd 3	type Rapid	result 1	date 2024-02-17	rnd 5	type Rapid	result 1
		Opponent Luo, Y (Yichen)				Opponent Upadhyay, S (Savya)
2	1	Tournament JNW Rapid - Helpmekaar Kollege 2024				Tournament JNW Rapid - Helpmekaar Kollege 2024
		date 2024-07-28	rnd 6	type Rapid	result 1	date 2024-07-28	rnd 6	type Rapid	result 1
		Opponent Moabi, O (Olerato)				Opponent Moabi, O (Olerato)
3	1	Tournament JNW Rapid - Helpmekaar Kollege 2024				Tournament JNW Rapid - Helpmekaar Kollege 2024
		date 2024-07-28	rnd 2	type Rapid	result 1	date 2024-07-28	rnd 2	type Rapid	result 1
		Opponent Mangena, M (Marklee)				Opponent Mangena, M (Marklee)

#	Games	Start				End
1	1	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 7	type Blitz	result 1	date 2023-06-17	rnd 7	type Blitz	result 1
		Opponent Shezi, L (Luyanda)				Opponent Shezi, L (Luyanda)
2	1	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 5	type Blitz	result 1	date 2023-06-17	rnd 5	type Blitz	result 1
		Opponent Gerber, Z (Zoe)				Opponent Gerber, Z (Zoe)
3	1	Tournament JMC Blitz - Higher Ground 2023				Tournament JMC Blitz - Higher Ground 2023
		date 2023-06-17	rnd 3	type Blitz	result 1	date 2023-06-17	rnd 3	type Blitz	result 1
		Opponent Hlabangwane, N (Ntwanano)				Opponent Hlabangwane, N (Ntwanano)

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	Van Heerden ,A (Alexander)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
1	Van Heerden ,A (Alexander)	4	1223.3	1435.8	4	1231.3	1435.8	0	0	0	0	0	0
2	Naicker ,V (Victoria Angelique)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Naicker ,V (Victoria Angelique)	3	1157	1298.6	3	1151.1	1298.6	0	0	0	0	0	0
3	Mannar ,A (Aaryan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Mannar ,A (Aaryan)	3	1288.3	1146.6	3	1283	1146.6	0	0	0	0	0	0
4	Thomson-Selibowitz ,R (Ryder)	3	1	-141.7	2	0.5	-212.5	1	0.5	0	0	0	0
4	Thomson-Selibowitz ,R (Ryder)	3	1393.8	1252.2	2	1355.6	1181.3	1	1255.4	1393.8	0	0	0
5	Prinsloo ,N (Nicholas)	2	1	0	2	1	0	0	0	0	0	0	0
5	Prinsloo ,N (Nicholas)	2	1392.9	1392.9	2	1379.5	1392.9	0	0	0	0	0	0
6	Chadalavada ,B (Bhaarghavarama)	2	2	425	2	2	425	0	0	0	0	0	0
6	Chadalavada ,B (Bhaarghavarama)	2	1304.7	1729.7	2	1302.3	1729.7	0	0	0	0	0	0
7	Smith ,C (Caleb)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	Smith ,C (Caleb)	2	1312.4	1524.9	2	1341.8	1524.9	0	0	0	0	0	0
8	Naidoo ,D (Dhiya)	2	0	-425	2	0	-425	0	0	0	0	0	0
8	Naidoo ,D (Dhiya)	2	1103.5	678.5	2	1092.4	678.5	0	0	0	0	0	0
9	Kay ,J (Jaime Leo)	2	1	0	2	1	0	0	0	0	0	0	0
9	Kay ,J (Jaime Leo)	2	1208.1	1208.1	2	1200	1208.1	0	0	0	0	0	0
10	Bazhko ,A (Anton)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Bazhko ,A (Anton)	2	1420.4	995.4	2	1407.5	995.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Williams, J (Joshua)

Ratings

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Last 24 raw ratings

Rating graph

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Top 3 Streaks

Top 10 opponents most often played

Norms