Chess South Africa Ratings Database

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Personal

Van Zyl-Rudd, J (Jack)

Chess SA id

102041158

FIDE id

Date of birth

2002-07-10 (Adult)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-12-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	2318.2	2325.2	2130.2	2118.2
Raw rating	2316.2	2323.6	2130.2	2118.2
Weighted rating	2318.2	2325.2	2130.2	2118.2
Weighted performance	1948.1	1954.2	0	0
Floor	1846.9	1864.2	1630.2	1637.4
K-factor	16	16	20	20
Min/Max rating change allowed	33.8	33.4	44.1	44.8
Highest rating	2346.9 2024-02-01	2364.2 2024-02-01	2130.2 2024-02-01	2137.4 2019-12-01
Highest raw rating	2346.9 2024-02-01	2364.2 2024-02-01	2130.2 2024-02-01	2137.4 2019-12-01
Highest weighted rating	2346.9 2025-07-01	2364.2 2025-07-01	2129.9 2025-08-01	2137.4 2018-02-01
Highest weighted performance	2302.8 2024-06-01	2302.8 2024-06-01	2001.8 2019-12-01	2015 2019-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1	-1.1	0	0
New rating	2317.3	2324.1	2130.2	2118.2
Analysis
Rating	2318.2	2325.2	2130.2	2118.2
Raw rating	2316.2	2323.6	2130.2	2118.2
Weighted rating	2318.2	2325.2	2130.2
Weighted performance	1948.1	1954.2	0
K-factor	16	16	20	20
Floor	1846.9	1864.2	1630.2	1637.4
Max/Min rating change allowed	33.8	33.4	44.1	44.8
Games	9	9	0	0
Score	5	5	0	0
Expected score	5.32	5.4	0	0
Score-Expected	-0.32	-0.4	0	0
Temp raw +/-	-5.1	-6.4	0	0
Final raw +/-	-5.1	-6.4	0	0
New raw rating	2311	2317.2	2130.2	2118.2
New weighted rating	2317.3	2324.1	2130.2	2118.2
New weighted performance	2052.4	2057.1	0	0
Temp new rating	2317.3	2324.1	2130.2	2118.2
Temp new rating +/-	-1	-1.1	0	0
Final new rating +/-	-1	-1.1	0	0
New rating	2317.3	2324.1	2130.2	2118.2
New K-factor	16	16	20	20
New floor	1846.9	1864.2	1630.2	1637.4

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	26	26	0	0
	61	61	0	0
	5	5	0	0
	0	0	0	0
	0	0	0	0
History	1171	1077	28	66

Games since
	Main 87	Standard 87		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	4		1		1
Male	4		1		1
Adult	1		1		1
Adult Male	1		1		1
Standard
	RSA		Province		Region
Overall	6		1		1
Male	6		1		1
Adult	3		1		1
Adult Male	3		1		1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	26	17.5	67.31	147.1	2002.4	2149.5
Standard	26	17.5	67.31	147.1	2002.4	2149.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	255	174	68.24	155	1973.2	2128.2
Standard	218	148.5	68.12	154	1994.6	2148.6
Rapid	6	5.5	91.67	354.2	1643.5	1997.7
Blitz	31	20	64.52	123.4	1886.5	2009.9

Date	Main	Standard	Rapid	Blitz
2026-01-01	2316.2	2323.6	2130.2	2118.2
2025-11-30	2316.2	2323.6	2130.2	2118.2
2025-11-01	2316.2	2323.6	2130.2	2118.2
2025-09-30	2316.2	2323.6	2130.2	2118.2
2025-09-01	2316.2	2323.6	2130.2	2118.2
2025-08-01	2316.2	2323.6	2130.2	2118.2
2025-07-01	2317.8	2325.3	2130.2	2118.2
2025-06-01	2315.7	2323.4	2130.2	2118.2
2025-05-01	2315.4	2323	2130.2	2118.2
2025-04-01	2313.8	2321.4	2130.2	2118.2
2025-03-01	2312.8	2319.8	2130.2	2118.2
2025-02-01	2312.8	2317.9	2130.2	2118.2
2025-01-01	2312.8	2315.9	2130.2	2118.2
2024-12-01	2323	2326.6	2130.2	2118.2
2024-11-01	2323	2326.6	2130.2	2118.2
2024-10-01	2323	2326.6	2130.2	2118.2
2024-09-01	2324.9	2329.2	2130.2	2118.2
2024-11-01	2324.9	2329.2	2130.2	2118.2
2024-07-01	2324.9	2329.2	2130.2	2118.2
2024-06-01	2341.1	2356.7	2130.2	2118.2
2024-05-01	2341.1	2356.7	2130.2	2118.2
2024-04-01	2341.1	2356.7	2130.2	2118.2
2024-03-01	2346.9	2364.2	2130.2	2118.2
2024-02-01	2346.9	2364.2	2130.2	2118.2

Comming soon.

Tournaments

History

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	XII SUNWAY SITGES INTERNATIONAL CHESS FESTIVAL 2025	2025-12-12	2025-12-22	Standard	Spain (ESP)	10	9	5	Yes	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	XII SUNWAY SITGES INTERNATIONAL CHESS FESTIVAL 2025	2025-12-12	2025-12-22	Standard	Spain (ESP)	10	9	5	Yes	Analysis
2	South African Open 2025 (Championship)	2025-06-28	2025-07-05	Standard	Johannesburg Metro (GJM)	11	11	6.5	Yes	Analysis
3	NMBCU Open 2025 (A)	2025-05-23	2025-05-25	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
4	Moja Chess Extravaganza 2025 (Prestige)	2025-04-26	2025-05-01	Standard	Johannesburg Metro (GJM)	9	9	5.5	Yes	Analysis
5	XXI Open Internacional Gran Hotel Bali 2024	2024-11-29	2024-12-05	Standard	Spain (ESP)	9	9	5	Yes	Analysis
6	2024 UCC Mind Over Board (A)	2024-08-30	2024-09-01	Standard	Nelson Mandela Bay (ENM)	5	5	4.5	Yes	Analysis
7	SixDays Budapest June IM-B 2024	2024-06-03	2024-06-08	Standard	Hungary (HUN)	9	6	3.5	Yes	Analysis
8	Budapesti Spring Festival A 2024	2024-05-23	2024-05-31	Standard	Hungary (HUN)	9	9	4	Yes	Analysis
9	3rd MIKIS THEODORAKIS INTERNATIONAL CHESS TOURNAMENT CHANIA 2024	2024-05-06	2024-06-12	Standard	Greece (GRE)	9	9	6	Yes	Analysis
10	Sardinia World Chess Festival - Open A 2024	2024-04-27	2024-05-04	Standard	Italy (ITA)	9	9	5	Yes	Analysis
11	XVI Memorial Pedro Lezcano Montalvo 2024	2024-03-23	2024-03-31	Standard	Spain (ESP)	9	9	6	Yes	Analysis
12	UCC Strategic Moves 2024 (A)	2024-03-08	2024-03-09	Standard	Nelson Mandela Bay (ENM)	5	5	4.5	Yes	Analysis
13	Uitenhage Chess Club Grand Prix 2023 (A)	2023-08-25	2023-08-26	Standard	Nelson Mandela Bay (ENM)	5	5	5	Yes	Analysis
14	2020 Boardwalk Pearson Open Chess Festival (IM Norm)	2020-03-11	2020-03-17	Standard	Nelson Mandela Bay (ENM)	10	10	3.5	Yes	Analysis
15	2019 South African Junior Team Championships (U18A)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
16	Adelboden Open 2019	2019-12-13	2019-12-15	Standard	Switzerland (SUI)	5	5	4	Yes	Analysis
17	11th CSC London Chess Classic Blitz A 2019	2019-12-08	2019-12-08	Blitz	England (ENG)	11	11	6	Yes	Analysis
18	11th CSC London Chess Classic Rapid Under 1825 2019	2019-12-07	2019-12-07	Rapid	England (ENG)	7	6	5.5	Yes	Analysis
19	11th CSC London Chess Classic FIDE Open 2019	2019-11-29	2019-12-06	Standard	England (ENG)	9	9	5.5	Yes	Analysis
20	Sandy Matthews Memorial 2019	2019-05-14	2019-07-02	Standard	Nelson Mandela Bay (ENM)	7	1	0.5	Yes	Analysis
21	NMBYCC Closed 2019 (U18)	2019-07-26	2019-07-27	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
22	Nelson Mandela Bay Junior Trials 4 2019 (U18+U20)	2019-07-12	2019-07-13	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
23	King Cars PECC Grand Prix Third Leg 2019	2019-04-27	2019-05-04	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
24	NMBJCU Trials 3 2019 (U18)	2019-05-10	2019-05-11	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
25	Open El Ksiba Blitz 2019	2019-04-11	2019-04-11	Blitz	Morocco (MAR)	11	11	7	Yes	Analysis
26	Open El Ksiba 2019	2019-04-08	2019-04-13	Standard	Morocco (MAR)	9	9	6.5	Yes	Analysis
27	2019 Boardwalk Pearson Open (GM Norm)	2019-03-25	2019-04-03	Standard	Nelson Mandela Bay (ENM)	10	10	2.5	Yes	Analysis
28	Ultimate Chess Open 2018 (A)	2018-11-30	2018-12-01	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
29	Oslo Chess Festival 2018	2018-09-30	2018-10-07	Standard	Norway (NOR)	10	9	6	Yes	Analysis
30	King Cars PECC Grand Prix Third Leg 2018	2018-06-22	2018-06-24	Standard	Nelson Mandela Bay (ENM)	6	6	6	Yes	Analysis
31	2018 Capablanca RR (GM Norm)	2018-04-26	2018-05-01	Standard	Tshwane (GTP)	9	9	3	Yes	Analysis
32	King Cars PECC Grand Prix Second Leg 2018	2018-04-14	2018-04-14	Blitz	Nelson Mandela Bay (ENM)	9	9	7	Yes	Analysis
33	NMB First Trails 2018 (U18+U20)	2018-03-23	2018-03-24	Standard	Nelson Mandela Bay (ENM)	6	6	5.5	Yes	Analysis
34	King Cars PECC Grand Prix First Leg 2018	2018-03-03	2018-03-10	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
35	2018 Boardwalk Pearson Open (IM Norm)	2018-03-12	2018-03-18	Standard	Nelson Mandela Bay (ENM)	9	9	5.5	Yes	Analysis

#	Games	Start				End
1	28	Tournament Open El Ksiba 2019				Tournament 11th CSC London Chess Classic FIDE Open 2019
		date 2019-04-13	rnd 9	type Standard	result 1	date 2019-11-30	rnd 2	type Standard	result 1
		Opponent Skalli Taoufik				Opponent Wilks Simon
2	23	Tournament King Cars PECC Grand Prix First Leg 2018				Tournament King Cars PECC Grand Prix Second Leg 2018
		date 2018-03-03	rnd 1	type Standard	result 1	date 2018-04-14	rnd 2	type Blitz	result 0.5
		Opponent Banks, DA (Delano)				Opponent Nevin, TW (Tyler)
3	19	Tournament 2020 Boardwalk Pearson Open Chess Festival				Tournament XVI Memorial Pedro Lezcano Montalvo 2024
		date 2020-03-16	rnd 8	type Standard	result 0.5	date 2024-03-28	rnd 6	type Standard	result 1
		Opponent Oatlhotse, P (Providence)				Opponent Bergero, Simone

#	Games	Start				End
1	28	Tournament Open El Ksiba 2019				Tournament 11th CSC London Chess Classic FIDE Open 2019
		date 2019-04-13	rnd 9	type Standard	result 1	date 2019-11-30	rnd 2	type Standard	result 1
		Opponent Skalli Taoufik				Opponent Wilks Simon
2	21	Tournament King Cars PECC Grand Prix First Leg 2018				Tournament NMB First Trails 2018
		date 2018-03-03	rnd 1	type Standard	result 1	date 2018-03-24	rnd 6	type Standard	result 0.5
		Opponent Banks, DA (Delano)				Opponent Riordan, SA (Simon)
3	19	Tournament 2020 Boardwalk Pearson Open Chess Festival				Tournament XVI Memorial Pedro Lezcano Montalvo 2024
		date 2020-03-16	rnd 8	type Standard	result 0.5	date 2024-03-28	rnd 6	type Standard	result 1
		Opponent Oatlhotse, P (Providence)				Opponent Bergero, Simone

#	Games	Start				End
1	6	Tournament 11th CSC London Chess Classic Rapid Under 1825 2019				Tournament 11th CSC London Chess Classic Rapid Under 1825 2019
		date 2019-12-07	rnd 2	type Rapid	result 1	date 2019-12-07	rnd 7	type Rapid	result 0.5
		Opponent Gogia Abeer				Opponent Ratnesan Rajeiv

#	Games	Start				End
1	8	Tournament King Cars PECC Grand Prix Second Leg 2018				Tournament Open El Ksiba Blitz 2019
		date 2018-04-14	rnd 4	type Blitz	result 1	date 2019-04-11	rnd 2	type Blitz	result 1
		Opponent Korf, R (Ruben)				Opponent El Habachi Rachid
2	6	Tournament Open El Ksiba Blitz 2019				Tournament Open El Ksiba Blitz 2019
		date 2019-04-11	rnd 4	type Blitz	result 1	date 2019-04-11	rnd 9	type Blitz	result 1
		Opponent Messala Noureddine				Opponent Becham Khalid
3	3	Tournament 11th CSC London Chess Classic Blitz A 2019				Tournament 11th CSC London Chess Classic Blitz A 2019
		date 2019-12-08	rnd 2	type Blitz	result 1	date 2019-12-08	rnd 4	type Blitz	result 1
		Opponent Neo Jing Yi Mischa				Opponent Pappelis Dimitrios

#	Games	Start				End
1	14	Tournament Nelson Mandela Bay Junior Trials 4 2019				Tournament 11th CSC London Chess Classic FIDE Open 2019
		date 2019-07-12	rnd 1	type Standard	result 1	date 2019-11-30	rnd 2	type Standard	result 1
		Opponent Taljard, D (Dante)				Opponent Wilks Simon
2	9	Tournament Uitenhage Chess Club Grand Prix 2023				Tournament UCC Strategic Moves 2024
		date 2023-08-25	rnd 1	type Standard	result 1	date 2024-03-09	rnd 4	type Standard	result 1
		Opponent Van Der Bank, RO (Ronald)				Opponent Jacobs, KT (Kevin)
3	8	Tournament King Cars PECC Grand Prix Third Leg 2018				Tournament Oslo Chess Festival 2018
		date 2018-06-22	rnd 1	type Standard	result 1	date 2018-10-01	rnd 2	type Standard	result 1
		Opponent Van Huyssteen, JA (Johan Abraham)				Opponent Shemsi Rukovci

#	Games	Start				End
1	14	Tournament Nelson Mandela Bay Junior Trials 4 2019				Tournament 11th CSC London Chess Classic FIDE Open 2019
		date 2019-07-12	rnd 1	type Standard	result 1	date 2019-11-30	rnd 2	type Standard	result 1
		Opponent Taljard, D (Dante)				Opponent Wilks Simon
2	9	Tournament Uitenhage Chess Club Grand Prix 2023				Tournament UCC Strategic Moves 2024
		date 2023-08-25	rnd 1	type Standard	result 1	date 2024-03-09	rnd 4	type Standard	result 1
		Opponent Van Der Bank, RO (Ronald)				Opponent Jacobs, KT (Kevin)
3	8	Tournament King Cars PECC Grand Prix Third Leg 2018				Tournament Oslo Chess Festival 2018
		date 2018-06-22	rnd 1	type Standard	result 1	date 2018-10-01	rnd 2	type Standard	result 1
		Opponent Van Huyssteen, JA (Johan Abraham)				Opponent Shemsi Rukovci

#	Games	Start				End
1	5	Tournament 11th CSC London Chess Classic Rapid Under 1825 2019				Tournament 11th CSC London Chess Classic Rapid Under 1825 2019
		date 2019-12-07	rnd 2	type Rapid	result 1	date 2019-12-07	rnd 6	type Rapid	result 1
		Opponent Gogia Abeer				Opponent Saidmurodov Shahjahon

#	Games	Start				End
1	4	Tournament King Cars PECC Grand Prix Second Leg 2018				Tournament Open El Ksiba Blitz 2019
		date 2018-04-14	rnd 8	type Blitz	result 1	date 2019-04-11	rnd 2	type Blitz	result 1
		Opponent Peter, NM (Neathan)				Opponent El Habachi Rachid
2	3	Tournament 11th CSC London Chess Classic Blitz A 2019				Tournament 11th CSC London Chess Classic Blitz A 2019
		date 2019-12-08	rnd 2	type Blitz	result 1	date 2019-12-08	rnd 4	type Blitz	result 1
		Opponent Neo Jing Yi Mischa				Opponent Pappelis Dimitrios
3	3	Tournament King Cars PECC Grand Prix Second Leg 2018				Tournament King Cars PECC Grand Prix Second Leg 2018
		date 2018-04-14	rnd 4	type Blitz	result 1	date 2018-04-14	rnd 6	type Blitz	result 1
		Opponent Korf, R (Ruben)				Opponent Hargreaves, NP (Nicholas)

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	Cawdery ,DJ (Daniel John)	6	2	-141.7	6	2	-141.7	0	0	0	0	0	0
1	Cawdery ,DJ (Daniel John)	6	2424.3	2282.7	6	2429.6	2282.7	0	0	0	0	0	0
2	Oatlhotse ,P (Providence)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
2	Oatlhotse ,P (Providence)	5	2201.8	2201.8	5	2215.9	2201.8	0	0	0	0	0	0
3	Grover ,S (Sahaj)	4	1.5	-106.2	4	1.5	-106.2	0	0	0	0	0	0
3	Grover ,S (Sahaj)	4	2549.8	2443.5	4	2551.9	2443.5	0	0	0	0	0	0
4	Nevin ,TW (Tyler William)	4	3	212.5	3	2.5	283.3	0	0	0	1	0.5	0
4	Nevin ,TW (Tyler William)	4	1729.8	1942.3	3	1825.3	2013.2	0	0	0	1	1421.6	1729.8
5	Jacobs ,KT (Kevin Terence)	4	3.5	318.8	3	3	425	0	0	0	1	0.5	0
5	Jacobs ,KT (Kevin Terence)	4	1899.2	2217.9	3	1885	2324.2	0	0	0	1	1905.4	1899.2
6	Lagardien ,I (Ismaeel)	3	3	425	3	3	425	0	0	0	0	0	0
6	Lagardien ,I (Ismaeel)	3	1592.4	2017.4	3	1590.6	2017.4	0	0	0	0	0	0
7	Reans ,S (Simbonisiwe)	3	3	425	3	3	425	0	0	0	0	0	0
7	Reans ,S (Simbonisiwe)	3	1243.7	1668.7	3	1252.6	1668.7	0	0	0	0	0	0
8	Kayonde ,A (Andrew)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
8	Kayonde ,A (Andrew)	3	2389.2	2247.5	3	2389.3	2247.5	0	0	0	0	0	0
9	Mafanya ,K (Kulasande)	3	3	425	3	3	425	0	0	0	0	0	0
9	Mafanya ,K (Kulasande)	3	1875.7	2300.7	3	1867	2300.7	0	0	0	0	0	0
10	Taljard ,D (Dante)	3	3	425	3	3	425	0	0	0	0	0	0
10	Taljard ,D (Dante)	3	1158.7	1583.7	3	1160.1	1583.7	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Van Zyl-Rudd, J (Jack)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms