Chess South Africa Ratings Database

PLAYER PAGE

Personal

Wilken, JB (Justin Barend)

Chess SA id

171042847

FIDE id

Date of birth

1971-05-31 (Adult)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-09-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1898.7	1910.9	1926.5	1935
Raw rating	1898.7	1910.9	1926.5	1935
Weighted rating	1869.7	1876.5	1926.5	1935
Weighted performance	1826.3	1834.9	0	0
Floor	1471.6	1471.6	1471.6	1483.8
K-factor	24	24	24	24
Min/Max rating change allowed	61.3	60.2	58.9	58.2
Highest rating	1971.6 2018-01-01	1971.6 2018-01-01	1971.6 2018-06-01	2021.7 2018-12-01
Highest raw rating	1971.6 2018-01-01	1971.6 2018-01-01	1971.6 2018-01-01	1983.8 2019-01-01
Highest weighted rating	1971.6 2018-01-01	1971.6 2018-01-01	1971.6 2018-06-01	1983.8 2019-11-01
Highest weighted performance	1883.7 2025-03-01	1889.6 2018-01-01	1638.4 2019-11-01	2021.7 2018-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1898.7	1910.9	1926.5	1935
Analysis
Rating	1898.7	1910.9	1926.5	1935
Raw rating	1898.7	1910.9	1926.5	1935
Weighted rating	1869.7	1876.5	1926.5
Weighted performance	1826.3	1834.9	0
K-factor	24	24	24	24
Floor	1471.6	1471.6	1471.6	1483.8
Max/Min rating change allowed	61.3	60.2	58.9	58.2
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	1898.7	1910.9	1926.5	1935
New weighted rating	1872.9	1880.3	1926.5	1935
New weighted performance	1825.6	1834.2	0	0
Temp new rating	1898.7	1910.9	1926.5	1935
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1898.7	1910.9	1926.5	1935
New K-factor	24	24	24	24
New floor	1471.6	1471.6	1471.6	1483.8

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	15	15	0	0
	27	27	0	0
	16	16	0	0
	23	16	0	7
	20	20	0	0
History	938	877	25	36

Games since
	Main 42	Standard 42		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	87		36		15
Male	84		35		15
Adult	64		27		12
Adult Male	63		27		12
Standard
	RSA		Province		Region
Overall	84		34		15
Male	81		33		15
Adult	60		24		12
Adult Male	59		24		12
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	15	11	73.33	198.3	1816	2014.3
Standard	15	11	73.33	198.3	1816	2014.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	200	127	63.5	114.8	1705.8	1820.5
Standard	174	111	63.79	117.2	1704.4	1821.7
Rapid	6	3.5	58.33	70.8	1669.1	1739.9
Blitz	20	12.5	62.5	106.2	1728.6	1834.9

Date	Main	Standard	Rapid	Blitz
2025-09-30	1898.7	1910.9	1926.5	1935
2025-09-01	1891.1	1901.8	1926.5	1935
2025-08-01	1891.1	1901.8	1926.5	1935
2025-07-01	1891.1	1901.8	1926.5	1935
2025-06-01	1891.1	1901.8	1926.5	1935
2025-05-01	1891.1	1901.8	1926.5	1935
2025-04-01	1891.1	1901.8	1926.5	1935
2025-03-01	1891.1	1901.8	1926.5	1935
2025-02-01	1875.5	1884.9	1926.5	1935
2025-01-01	1837.8	1839.3	1926.5	1935
2024-12-01	1837.8	1839.3	1926.5	1935
2024-11-01	1837.8	1839.3	1926.5	1935
2024-10-01	1837.8	1839.3	1926.5	1935
2024-09-01	1837.8	1839.3	1926.5	1935
2024-08-01	1821	1819.4	1926.5	1935
2024-07-01	1821	1819.4	1926.5	1935
2024-06-01	1840.6	1838.6	1926.5	1935
2024-08-01	1840.6	1838.6	1926.5	1935
2024-04-01	1858.1	1861.8	1926.5	1935
2024-03-01	1858.1	1861.8	1926.5	1935
2024-02-01	1858.1	1861.8	1926.5	1935
2024-01-01	1858.1	1861.8	1926.5	1935
2023-12-01	1817.7	1822.9	1926.5	1931
2023-11-01	1817.7	1822.9	1926.5	1931

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	Tshwane Chess Club Clash 2025 (Prestige)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	2025 Piet Robbertse Fide Rated Open Chess Tournament (A)	2025-02-01	2025-02-02	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
3	2025 Tshwane Chess OPEN Registration Tournament (A1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	4.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Tshwane Chess Club Clash 2025 (Prestige)	2025-09-13	2025-09-13	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
2	2025 Piet Robbertse Fide Rated Open Chess Tournament (A)	2025-02-01	2025-02-02	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
3	2025 Tshwane Chess OPEN Registration Tournament (A1)	2025-01-25	2025-01-25	Standard	Tshwane (GTP)	5	5	4.5	Yes	Analysis
4	Bojanala's FIDE In The Sparkling Waters 2024 (Prestige)	2024-08-16	2024-08-18	Standard	Bojanala Platina (NBR)	6	6	4.5	Yes	Analysis
5	2024 Elise Steenkamp Open Chess Tournament (Kings)	2024-06-15	2024-06-17	Standard	Tshwane (GTP)	7	7	4.5	Yes	Analysis
6	2024 Silver Lakes Open Chess Tournament (Prestige)	2024-04-20	2024-04-20	Standard	Tshwane (GTP)	5	3	0	Yes	Analysis
7	South African Closed Chess Championship 2024 (Seniors)	2024-03-25	2024-04-02	Standard	Cape Town (WCT)	11	11	7.5	Yes	Analysis
8	Bojanala's FIDE in the Sparkling Waters 2023 (Prestige)	2023-07-28	2023-07-30	Standard	Bojanala Platina (NBR)	6	6	3	Yes	Analysis
9	2023 Lubowski Open Tournament (A)	2023-06-24	2023-06-25	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
10	Harties Wolf Pack 2023 (Money Queens)	2023-01-21	2023-01-21	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
11	Lardies Tournament 2022 (Open)	2022-10-29	2022-10-29	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
12	South African Open 2022 (Championship)	2022-07-09	2022-07-17	Standard	Cape Town (WCT)	11	11	6.5	Yes	Analysis
13	Chessheroes Choo Choo Challenge 2022	2022-01-08	2022-01-08	Blitz	Tshwane (GTP)	7	7	4	Yes	Analysis
14	2021 Milos Ristic Open (A)	2021-10-09	2021-10-09	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
15	2021 Lardies Ope (A+B)	2021-10-29	2021-10-29	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
16	Volkskool Tournament 2021 (Open)	2021-06-26	2021-06-26	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
17	KHS 2021 (A)	2021-04-10	2021-04-10	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
18	2020 Boardwalk Pearson Open Chess Festival (Prestige)	2020-03-13	2020-03-15	Standard	Nelson Mandela Bay (ENM)	7	7	2.5	Yes	Analysis
19	King Cars Pe Chess Club Grand Prix Leg 1 2020	2020-02-15	2020-02-22	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
20	2019 Inter Region Chess Championships	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	6	4.5	Yes	Analysis
21	Ulitmate Chess Open 2019 (Rapid A)	2019-11-30	2019-11-30	Rapid	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
22	Ulitmate Chess Open 2019 (Blitz A)	2019-11-30	2019-11-30	Blitz	Nelson Mandela Bay (ENM)	6	6	4.5	Yes	Analysis
23	South African Open Chess Championships 2019 (A)	2019-06-15	2019-06-22	Standard	Frances Baard (NCF)	9	9	5.5	Yes	Analysis
24	2019 Chris Greyling (A)	2019-04-27	2019-04-27	Standard	Tshwane (GTP)	5	0	0	No	Analysis
25	2019 Capablanca Chess Festival (RR A)	2019-04-18	2019-04-22	Standard	Tshwane (GTP)	9	9	3.5	Yes	Analysis
26	2019 TuksChess Open (A)	2019-02-23	2019-02-23	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
27	2018 Inter Region Chess Championships	2018-12-21	2018-12-24	Standard	4 Knights (4K)	7	6	4.5	Yes	Analysis
28	South African Junior Blitz 2018 (Open)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	7	4	Yes	Analysis
29	2018 Sedibeng Summer Open (A)	2018-10-20	2018-10-20	Standard	Sedibeng (GSV)	5	4	2.5	Yes	Analysis
30	South African Open 2018 (A)	2018-07-07	2018-07-14	Standard	Mangaung (FMB)	11	11	6.5	Yes	Analysis
31	2018 Crawford Open (A)	2018-03-24	2018-03-24	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
32	2018 Boardwalk Pearson Open (A)	2018-03-16	2018-03-18	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
33	South African Inter Regional Championships 2017	2018-01-09	2018-01-12	Standard	4 Knights (4K)	7	6	3	Yes	Analysis

#	Games	Start				End
1	10	Tournament Bojanala's FIDE In The Sparkling Waters 2024				Tournament 2025 Tshwane Chess OPEN Registration Tournament
		date 2024-08-17	rnd 2	type Standard	result 0.5	date 2025-01-25	rnd 5	type Standard	result 1
		Opponent Diale, A (Aobakwe)				Opponent Du Plessis, H (Heinco)
2	8	Tournament Ulitmate Chess Open 2019				Tournament 2019 Inter Region Chess Championships
		date 2019-11-30	rnd 5	type Rapid	result 1	date 2020-01-12	rnd 7	type Standard	result 0.5
		Opponent Freeman, V (Vianco)				Opponent Mpya, TM (Tshediso)
3	7	Tournament Chessheroes Choo Choo Challenge 2022				Tournament South African Open 2022
		date 2022-01-08	rnd 6	type Blitz	result 1	date 2022-07-11	rnd 5	type Standard	result 1
		Opponent Petlak, M (Marek)				Opponent Chironda, S (Sean Kudzai)

#	Games	Start				End
1	10	Tournament Bojanala's FIDE In The Sparkling Waters 2024				Tournament 2025 Tshwane Chess OPEN Registration Tournament
		date 2024-08-17	rnd 2	type Standard	result 0.5	date 2025-01-25	rnd 5	type Standard	result 1
		Opponent Diale, A (Aobakwe)				Opponent Du Plessis, H (Heinco)
2	10	Tournament South African Open 2018				Tournament 2018 Inter Region Chess Championships
		date 2018-07-14	rnd 11	type Standard	result 1	date 2018-12-23	rnd 6	type Standard	result 1
		Opponent Cronwright, S (Shaun)				Opponent Dinham, J (James)
3	8	Tournament South African Open Chess Championships 2019				Tournament 2019 Inter Region Chess Championships
		date 2019-06-21	rnd 8	type Standard	result 1	date 2020-01-12	rnd 7	type Standard	result 0.5
		Opponent Mashope, MD (Mpho)				Opponent Mpya, TM (Tshediso)

#	Games	Start				End
1	2	Tournament Ulitmate Chess Open 2019				Tournament Ulitmate Chess Open 2019
		date 2019-11-30	rnd 5	type Rapid	result 1	date 2019-11-30	rnd 6	type Rapid	result 0.5
		Opponent Freeman, V (Vianco)				Opponent Odendaal, F (Frederick)
2	2	Tournament Ulitmate Chess Open 2019				Tournament Ulitmate Chess Open 2019
		date 2019-11-30	rnd 1	type Rapid	result 1	date 2019-11-30	rnd 2	type Rapid	result 1
		Opponent Nevin, TW (Tyler)				Opponent Beling, R (Ricardo)

#	Games	Start				End
1	5	Tournament Ulitmate Chess Open 2019				Tournament Chessheroes Choo Choo Challenge 2022
		date 2019-11-30	rnd 4	type Blitz	result 1	date 2022-01-08	rnd 2	type Blitz	result 0.5
		Opponent Kruger, MJ (Matthew)				Opponent Tenzer, D (Daniel)
2	3	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 3	type Blitz	result 1	date 2018-12-19	rnd 5	type Blitz	result 1
		Opponent Moche, J (Johannes)				Opponent Simutowe, M (Musatwe)
3	2	Tournament Chessheroes Choo Choo Challenge 2022				Tournament Chessheroes Choo Choo Challenge 2022
		date 2022-01-08	rnd 6	type Blitz	result 1	date 2022-01-08	rnd 7	type Blitz	result 1
		Opponent Petlak, M (Marek)				Opponent Selepe, LN (Lwazi)

#	Games	Start				End
1	5	Tournament Lardies Tournament 2022				Tournament Harties Wolf Pack 2023
		date 2022-10-29	rnd 4	type Standard	result 1	date 2023-01-21	rnd 3	type Standard	result 1
		Opponent Van Der Westhuizen, FJ (Fritz-Jan)				Opponent Sathish, A (Abinavah)
2	5	Tournament King Cars Pe Chess Club Grand Prix Leg 1 2020				Tournament King Cars Pe Chess Club Grand Prix Leg 1 2020
		date 2020-02-15	rnd 2	type Standard	result 1	date 2020-02-22	rnd 6	type Standard	result 1
		Opponent Jenecker, J (Jayden)				Opponent Stambull, RF (Ricardo)
3	4	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament 2025 Tshwane Chess OPEN Registration Tournament
		date 2025-01-25	rnd 2	type Standard	result 1	date 2025-01-25	rnd 5	type Standard	result 1
		Opponent Slabbert, ZN (Zander Nicolaas)				Opponent Du Plessis, H (Heinco)

#	Games	Start				End
1	5	Tournament Lardies Tournament 2022				Tournament Harties Wolf Pack 2023
		date 2022-10-29	rnd 4	type Standard	result 1	date 2023-01-21	rnd 3	type Standard	result 1
		Opponent Van Der Westhuizen, FJ (Fritz-Jan)				Opponent Sathish, A (Abinavah)
2	5	Tournament King Cars Pe Chess Club Grand Prix Leg 1 2020				Tournament King Cars Pe Chess Club Grand Prix Leg 1 2020
		date 2020-02-15	rnd 2	type Standard	result 1	date 2020-02-22	rnd 6	type Standard	result 1
		Opponent Jenecker, J (Jayden)				Opponent Stambull, RF (Ricardo)
3	4	Tournament 2025 Tshwane Chess OPEN Registration Tournament				Tournament 2025 Tshwane Chess OPEN Registration Tournament
		date 2025-01-25	rnd 2	type Standard	result 1	date 2025-01-25	rnd 5	type Standard	result 1
		Opponent Slabbert, ZN (Zander Nicolaas)				Opponent Du Plessis, H (Heinco)

#	Games	Start				End
1	2	Tournament Ulitmate Chess Open 2019				Tournament Ulitmate Chess Open 2019
		date 2019-11-30	rnd 1	type Rapid	result 1	date 2019-11-30	rnd 2	type Rapid	result 1
		Opponent Nevin, TW (Tyler)				Opponent Beling, R (Ricardo)
2	1	Tournament Ulitmate Chess Open 2019				Tournament Ulitmate Chess Open 2019
		date 2019-11-30	rnd 5	type Rapid	result 1	date 2019-11-30	rnd 5	type Rapid	result 1
		Opponent Freeman, V (Vianco)				Opponent Freeman, V (Vianco)

#	Games	Start				End
1	3	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 3	type Blitz	result 1	date 2018-12-19	rnd 5	type Blitz	result 1
		Opponent Moche, J (Johannes)				Opponent Simutowe, M (Musatwe)
2	2	Tournament Chessheroes Choo Choo Challenge 2022				Tournament Chessheroes Choo Choo Challenge 2022
		date 2022-01-08	rnd 6	type Blitz	result 1	date 2022-01-08	rnd 7	type Blitz	result 1
		Opponent Petlak, M (Marek)				Opponent Selepe, LN (Lwazi)
3	2	Tournament Ulitmate Chess Open 2019				Tournament Chessheroes Choo Choo Challenge 2022
		date 2019-11-30	rnd 6	type Blitz	result 1	date 2022-01-08	rnd 1	type Blitz	result 1
		Opponent Malgas, GL (Glenwell)				Opponent Horne, K (Kian Louis)

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	Mabusela ,JM (Johannes Manyedi)	4	0.5	-318.8	4	0.5	-318.8	0	0	0	0	0	0
1	Mabusela ,JM (Johannes Manyedi)	4	2164.9	1846.1	4	2162.8	1846.1	0	0	0	0	0	0
2	Nelson ,WJH (William Jacobus Hattingh)	4	2.5	106.2	3	2	141.7	0	0	0	1	0.5	0
2	Nelson ,WJH (William Jacobus Hattingh)	4	1835.8	1942	3	1837.4	1977.4	0	0	0	1	1918.3	1835.8
3	Mwale ,J (Joseph)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
3	Mwale ,J (Joseph)	3	2164.5	2022.8	3	2168.5	2022.8	0	0	0	0	0	0
4	Smit ,YH (Yoshua Hendrik)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
4	Smit ,YH (Yoshua Hendrik)	3	1657.3	1657.3	3	1661.5	1657.3	0	0	0	0	0	0
5	Mpya ,TM (Tshediso Matome)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
5	Mpya ,TM (Tshediso Matome)	3	1893.8	1893.8	3	1879.4	1893.8	0	0	0	0	0	0
6	Mnguni ,JD (Jakob Dumisani)	3	0	-425	3	0	-425	0	0	0	0	0	0
6	Mnguni ,JD (Jakob Dumisani)	3	2159.8	1734.8	3	2162.5	1734.8	0	0	0	0	0	0
7	Nevin ,TW (Tyler William)	3	2	141.7	2	1	0	1	1	425	0	0	0
7	Nevin ,TW (Tyler William)	3	1598.6	1740.3	2	1561.7	1598.6	1	1523.1	2023.6	0	0	0
8	Slabbert ,ZN (Zander Nicolaas)	2	2	425	2	2	425	0	0	0	0	0	0
8	Slabbert ,ZN (Zander Nicolaas)	2	1797.7	2222.6	2	1796.2	2222.6	0	0	0	0	0	0
9	Lefyedi ,T (Thatego)	2	1	0	2	1	0	0	0	0	0	0	0
9	Lefyedi ,T (Thatego)	2	1693.1	1693.1	2	1687.9	1693.1	0	0	0	0	0	0
10	Makhosonke ,KM (Kuhlase Matthiolus)	2	2	425	2	2	425	0	0	0	0	0	0
10	Makhosonke ,KM (Kuhlase Matthiolus)	2	1840.5	2265.5	2	1848.2	2265.5	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Wilken, JB (Justin Barend)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms