Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koen, JP (Jan-Paul)

Chess SA id

108093065

FIDE id

Date of birth

2008-07-09 (U18)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-30

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1153.7

Item	Main	Standard	Rapid	Blitz
Rating	1242.9	1245.7	1124.1	1200
Raw rating	1210.1	1207.6	1124.1	1200
Weighted rating	1242.9	1245.7	1118.9	1200
Weighted performance	1094.9	1101.7	0	0
Floor	818.1	804.7	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	163.4	164	184.8	165.8
Highest rating	1335.8 2024-04-01	1318.3 2024-04-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1318.1 2024-05-01	1304.7 2024-05-01	1200 2020-01-01	1200 2024-02-01
Highest weighted rating	1243.8 2025-09-01	1246.3 2025-09-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1335.8 2024-04-01	1318.3 2024-04-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2	-2.1	0	0
New rating	1240.9	1243.6	1124.1	1200
Analysis
Rating	1242.9	1245.7	1124.1	1200
Raw rating	1210.1	1207.6	1124.1	1200
Weighted rating	1242.9	1245.7	1118.9
Weighted performance	1094.9	1101.7	0
K-factor	36	36	36	36
Floor	818.1	804.7	700	700
Max/Min rating change allowed	163.4	164	184.8	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	1210.1	1207.6	1124.1	1200
New weighted rating	1240.9	1243.6	1119	1200
New weighted performance	1088.2	1095	0	0
Temp new rating	1240.9	1243.6	1124.1	1200
Temp new rating +/-	-2	-2.1	0	0
Final new rating +/-	-2	-2.1	0	0
New rating	1240.9	1243.6	1124.1	1200
New K-factor	36	36	36	36
New floor	818.1	804.7	700	700

Item	Main	Standard	Rapid
	0	0	0
	18	18	0
	43	36	7
	24	19	5
	0	0	0
	0	0	0
History	90	78	12

Games since
	Main 61	Standard 54		Rapid 7		Blitz 0
Gender	Male
Age group	U18
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3779		1252		150
Male	2880		949		116
U18	561		199		26
U18 Male	454		159		22
Standard
	RSA		Province		Region
Overall	3684		1320		155
Male	2819		1015		120
U18	577		217		31
U18 Male	474		176		26
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	18	6.5	36.11	-118.1	1308.6	1190.5
Standard	18	6.5	36.11	-118.1	1308.6	1190.5
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	85	31	36.47	-115	1298.7	1183.7
Standard	73	27	36.99	-110.6	1300.3	1189.6
Rapid	12	4	33.33	-141.7	1289.1	1147.5
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1210.1	1207.6	1124.1	1200
2025-09-30	1241.2	1241.8	1124.1	1200
2025-09-01	1241.2	1241.8	1124.1	1200
2025-08-01	1253.2	1256.2	1124.1	1200
2025-07-01	1253.2	1256.2	1124.1	1200
2025-06-01	1253.2	1256.2	1124.1	1200
2025-05-01	1233.8	1234	1124.1	1200
2025-04-01	1231.9	1231.6	1124.1	1200
2025-03-01	1229.3	1228.4	1124.1	1200
2025-02-01	1227	1226.5	1123.4	1200
2025-01-01	1207.8	1215.7	1091.2	1200
2024-12-01	1251.1	1264.7	1091.2	1200
2024-11-01	1257.1	1274.4	1091.2	1200
2024-10-01	1278.6	1304.3	1091.2	1200
2024-09-01	1278.6	1304.3	1091.2	1200
2024-08-01	1273.2	1304.7	1091.2	1200
2024-07-01	1318.1	1304.7	1144	1200
2024-09-01	1318.1	1304.7	1144	1200
2024-05-01	1318.1	1304.7	1144	1200
2024-04-01	1164	1151.6	1144	1200
2024-03-01	1142.8	1120	1144	1200
2024-02-01	1142.8	1120	1144	1200
2024-01-01	1159	1130.8	1144	1200
2023-12-01	1159	1130.8	1144	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	2025 Gauteng Top Schools Teams (U17)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
2	GDE (D7) Sedibeng East Schools 2025 (U17)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
3	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U18 Boys)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	Afrikaans High School Open 08 Feb 2025 (B)	2025-02-08	2025-02-08	Standard	Sedibeng (GSV)	5	5	2	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 (U17)	2025-08-30	2025-08-30	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
2	GDE (D7) Sedibeng East Schools 2025 (U17)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
3	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U18 Boys)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	Afrikaans High School Open 08 Feb 2025 (B)	2025-02-08	2025-02-08	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
5	Gauteng Inter-Region at UJ 2024 (U18 Open)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	0	Yes	Analysis
6	Queens Gambit Chess Open 2024 (A)	2024-11-23	2024-11-23	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
7	NWU Vaal Chess Open 12 Oct 2024 (A+B)	2024-10-12	2024-10-12	Standard	Sedibeng (GSV)	5	3	0	Yes	Analysis
8	Sedibeng East D7 Teams Trials 2024 (U17)	2024-08-03	2024-08-03	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
9	Midvaal Winter Classic 13 July 2024 (B)	2024-07-13	2024-07-13	Rapid	Sedibeng (GSV)	7	7	2	Yes	Analysis
10	Hoerskool Overvaal Chess Open 2024 (B)	2024-04-20	2024-04-20	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
11	Vaalpark Primary Chess Open 2024 (B)	2024-04-13	2024-04-13	Standard	Sedibeng (GSV)	5	3	2	Yes	Analysis
12	NG Kerk Vanderbijlpark Suid 2024 (C)	2024-02-24	2024-02-24	Standard	Sedibeng (GSV)	5	5	2.5	Yes	Analysis
13	2024 Gauteng Inter-Region Chess Championship (U16B)	2024-01-13	2024-01-14	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
14	Dr Pieter Hangelbroek Rapid 2023 (B)	2023-10-28	2023-10-28	Rapid	Sedibeng (GSV)	5	5	2	Yes	Analysis
15	Gauteng D7 Teams 2023 (U17)	2023-08-12	2023-08-12	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
16	Valia's Chess Tournament 2023 (C)	2023-05-06	2023-05-06	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
17	Gauteng Schools D7 2023 (U15 Boys)	2023-05-20	2023-05-20	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
18	Overvaal Open 2023 (C)	2023-04-15	2023-04-15	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis

#	Games	Start				End
1	3	Tournament Afrikaans High School Open 08 Feb 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-02-08	rnd 4	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Hariram, T (Taryn)				Opponent Botha, T (Taygan)
2	3	Tournament Sedibeng East D7 Teams Trials 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 0.5
		Opponent Gebuza, M (Mbali)				Opponent Ngqondeni, S (Sinalo)
3	2	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-05-24	rnd 3	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Mbhele, I (Izanokuhle Khauhelo)				Opponent Siba, O (Owam Lethabo Unam)

#	Games	Start				End
1	5	Tournament Hoerskool Overvaal Chess Open 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-08-03	rnd 3	type Standard	result 0.5
		Opponent Sieberhagen, N (Nicolaas)				Opponent Ngqondeni, S (Sinalo)
2	3	Tournament Afrikaans High School Open 08 Feb 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-02-08	rnd 4	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Hariram, T (Taryn)				Opponent Botha, T (Taygan)
3	2	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-05-24	rnd 3	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Mbhele, I (Izanokuhle Khauhelo)				Opponent Siba, O (Owam Lethabo Unam)

#	Games	Start				End
1	2	Tournament Dr Pieter Hangelbroek Rapid 2023				Tournament Dr Pieter Hangelbroek Rapid 2023
		date 2023-10-28	rnd 3	type Rapid	result 1	date 2023-10-28	rnd 4	type Rapid	result 1
		Opponent Booysen, M (Minique)				Opponent Van Biljon, J (Jessica)
2	1	Tournament Midvaal Winter Classic 13 July 2024				Tournament Midvaal Winter Classic 13 July 2024
		date 2024-07-13	rnd 6	type Rapid	result 1	date 2024-07-13	rnd 6	type Rapid	result 1
		Opponent Khumalo, N (Nkosinathi)				Opponent Khumalo, N (Nkosinathi)
3	1	Tournament Midvaal Winter Classic 13 July 2024				Tournament Midvaal Winter Classic 13 July 2024
		date 2024-07-13	rnd 4	type Rapid	result 1	date 2024-07-13	rnd 4	type Rapid	result 1
		Opponent Van Heerden, D (Derick)				Opponent Van Heerden, D (Derick)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Afrikaans High School Open 08 Feb 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-02-08	rnd 4	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Hariram, T (Taryn)				Opponent Botha, T (Taygan)
2	2	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-05-24	rnd 3	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Mbhele, I (Izanokuhle Khauhelo)				Opponent Siba, O (Owam Lethabo Unam)
3	2	Tournament Sedibeng East D7 Teams Trials 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Gebuza, M (Mbali)				Opponent Mohale, S (Selowa)

#	Games	Start				End
1	4	Tournament Hoerskool Overvaal Chess Open 2024				Tournament Sedibeng East D7 Teams Trials 2024
		date 2024-04-20	rnd 4	type Standard	result 1	date 2024-08-03	rnd 2	type Standard	result 1
		Opponent Sieberhagen, N (Nicolaas)				Opponent Mohale, S (Selowa)
2	3	Tournament Afrikaans High School Open 08 Feb 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-02-08	rnd 4	type Standard	result 1	date 2025-05-24	rnd 1	type Standard	result 1
		Opponent Hariram, T (Taryn)				Opponent Botha, T (Taygan)
3	2	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025
		date 2025-05-24	rnd 3	type Standard	result 1	date 2025-05-24	rnd 4	type Standard	result 1
		Opponent Mbhele, I (Izanokuhle Khauhelo)				Opponent Siba, O (Owam Lethabo Unam)

#	Games	Start				End
1	2	Tournament Dr Pieter Hangelbroek Rapid 2023				Tournament Dr Pieter Hangelbroek Rapid 2023
		date 2023-10-28	rnd 3	type Rapid	result 1	date 2023-10-28	rnd 4	type Rapid	result 1
		Opponent Booysen, M (Minique)				Opponent Van Biljon, J (Jessica)
2	1	Tournament Midvaal Winter Classic 13 July 2024				Tournament Midvaal Winter Classic 13 July 2024
		date 2024-07-13	rnd 6	type Rapid	result 1	date 2024-07-13	rnd 6	type Rapid	result 1
		Opponent Khumalo, N (Nkosinathi)				Opponent Khumalo, N (Nkosinathi)
3	1	Tournament Midvaal Winter Classic 13 July 2024				Tournament Midvaal Winter Classic 13 July 2024
		date 2024-07-13	rnd 4	type Rapid	result 1	date 2024-07-13	rnd 4	type Rapid	result 1
		Opponent Van Heerden, D (Derick)				Opponent Van Heerden, D (Derick)

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	Howat ,LC (Logan)	3	0	-425	3	0	-425	0	0	0	0	0	0
1	Howat ,LC (Logan)	3	1338.2	913.2	3	1342.1	913.2	0	0	0	0	0	0
2	Botha ,T (Taygan)	2	1	0	2	1	0	0	0	0	0	0	0
2	Botha ,T (Taygan)	2	1118.7	1118.7	2	1104.1	1118.7	0	0	0	0	0	0
3	Mlambo ,S (Sihle)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Mlambo ,S (Sihle)	2	1563.1	1138.1	2	1538.4	1138.1	0	0	0	0	0	0
4	Huisamen ,D (De Villiers)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Huisamen ,D (De Villiers)	2	1403.3	978.3	2	1415.4	978.3	0	0	0	0	0	0
5	Mjikelezo ,L (Luvuyo)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Mjikelezo ,L (Luvuyo)	2	1581.8	1156.8	2	1573.1	1156.8	0	0	0	0	0	0
6	Mosae ,N (Ntando)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Mosae ,N (Ntando)	1	1168.7	743.7	1	1166.4	743.7	0	0	0	0	0	0
7	Visser ,M (Mila)	1	1	425	1	1	425	0	0	0	0	0	0
7	Visser ,M (Mila)	1	1321.2	1746.2	1	1310.2	1746.2	0	0	0	0	0	0
8	Chibase ,N (Nkosana)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Chibase ,N (Nkosana)	1	1781	1356	1	1792	1356	0	0	0	0	0	0
9	Mbhele ,I (Izanokuhle Khauhelo)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mbhele ,I (Izanokuhle Khauhelo)	1	1168.5	1593.5	1	1161.3	1593.5	0	0	0	0	0	0
10	Mabuya ,T (Thapelo Lerato)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mabuya ,T (Thapelo Lerato)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Koen, JP (Jan-Paul)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms