Chess South Africa Ratings Database

PLAYER PAGE

Personal

Kleynhans, JC (Jacob Cornelius)

Chess SA id

109087838

FIDE id

Date of birth

2009-12-27 (U18)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-04-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1119.6	1041.4	1258.4	1200
Raw rating	1119.6	1041.4	1258.4	1200
Weighted rating	1119.6	1041.4	1258.4	1200
Weighted performance	493.2	343.9	0	0
Floor	810.2	831.2	801.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	185.9	207.9	152.6	165.8
Highest rating	1448 2018-03-01	1445.3 2018-03-01	1636.1 2020-02-01	1200 2018-10-01
Highest raw rating	1310.2 2018-04-01	1331.2 2018-04-01	1301.6 2020-03-01	1200 2024-02-01
Highest weighted rating	1310.2 2018-04-01	1331.2 2018-04-01	1301.6 2022-02-01	1200 2018-10-01
Highest weighted performance	1448 2018-03-01	1445.3 2018-03-01	1636.1 2020-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1119.6	1041.4	1258.4	1200
Analysis
Rating	1119.6	1041.4	1258.4	1200
Raw rating	1119.6	1041.4	1258.4	1200
Weighted rating	1119.6	1041.4	1258.4
Weighted performance	493.2	343.9	0
K-factor	36	36	36	36
Floor	810.2	831.2	801.6	700
Max/Min rating change allowed	185.9	207.9	152.6	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	1119.6	1041.4	1258.4	1200
New weighted rating	1119.6	1041.4	1258.4	1200
New weighted performance	492.9	343.6	0	0
Temp new rating	1119.6	1041.4	1258.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1119.6	1041.4	1258.4	1200
New K-factor	36	36	36	36
New floor	810.2	831.2	801.6	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	7	0	7
	9	9	0
History	69	52	17

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Tshwane (GTP)
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	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	64	34	53.12	26.6	1098.6	1125.2
Standard	52	25	48.08	-16.3	1087.8	1071.5
Rapid	12	9	75	212.5	1145.4	1357.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1119.6	1041.4	1258.4	1200
2025-09-01	1119.6	1041.4	1258.4	1200
2025-08-01	1119.6	1041.4	1258.4	1200
2025-07-01	1119.6	1041.4	1258.4	1200
2025-06-01	1119.6	1041.4	1258.4	1200
2025-05-01	1119.6	1041.4	1258.4	1200
2025-04-01	1119.6	1041.4	1258.4	1200
2025-03-01	1119.6	1041.4	1258.4	1200
2025-02-01	1119.6	1041.4	1258.4	1200
2025-01-01	1119.6	1041.4	1258.4	1200
2024-12-01	1119.6	1041.4	1258.4	1200
2024-11-01	1119.6	1041.4	1258.4	1200
2024-10-01	1119.6	1041.4	1258.4	1200
2024-09-01	1119.6	1041.4	1258.4	1200
2024-08-01	1119.6	1041.4	1258.4	1200
2024-07-01	1119.6	1041.4	1258.4	1200
2024-06-01	1119.6	1041.4	1258.4	1200
2024-08-01	1119.6	1041.4	1258.4	1200
2024-04-01	1119.6	1041.4	1258.4	1200
2024-03-01	1119.6	1041.4	1258.4	1200
2024-02-01	1119.6	1041.4	1258.4	1200
2024-01-01	1119.6	1041.4	1258.4	1200
2023-12-01	1119.6	1041.4	1258.4	1200
2023-11-01	1119.6	1041.4	1258.4	1200

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	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	D4 Individuals 2022 (U13 Open)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	4	Yes	Analysis
2	2021 Chris Greyling Open Tournament (D)	2021-05-08	2021-05-08	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	2021 Registration Tournament (C)	2021-03-13	2021-03-13	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
4	Swartkop LS Proewe 2020 (U11)	2020-02-21	2020-02-21	Rapid	Tshwane (GTP)	5	5	5	Yes	Analysis
5	2019 Swartkop Club Closed Championship (A)	2019-08-01	2019-08-15	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
6	2019 Swartkop Open (C)	2019-06-15	2019-06-15	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
7	2019 RMS Laerskole (U11)	2019-06-01	2019-06-01	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
8	2019 D4 Individual Finals (U11 Mixed)	2019-03-09	2019-03-09	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
9	2018 D4 Tshwane South Schools League Finals (U9)	2018-08-03	2018-08-03	Standard	Tshwane (GTP)	5	5	1	Yes	Analysis
10	2018 Swartkop Open (D)	2018-06-23	2018-06-23	Standard	Tshwane (GTP)	5	5	3.5	Yes	Analysis
11	2018 Capablanca Swiss (C)	2018-04-27	2018-04-29	Standard	Tshwane (GTP)	7	4	0	Yes	Analysis
12	2018 Swartkop Proewe (U9)	2018-03-09	2018-03-09	Standard	Tshwane (GTP)	5	5	5	Yes	Analysis
13	2018 D4 Tshwane North Individual Chess Championships (U9 Boys)	2018-03-10	2018-03-10	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis

#	Games	Start				End
1	8	Tournament 2018 Swartkop Proewe				Tournament 2018 D4 Tshwane North Individual Chess Championships
		date 2018-03-09	rnd 1	type Standard	result 1	date 2018-03-10	rnd 3	type Standard	result 1
		Opponent Jordaan, M (Markus)				Opponent Collett, J (Joshua Sean)
2	6	Tournament 2019 Swartkop Club Closed Championship				Tournament Swartkop LS Proewe 2020
		date 2019-08-15	rnd 5	type Standard	result 0.5	date 2020-02-21	rnd 5	type Rapid	result 1
		Opponent Meades, RA (Ruben Abraham)				Opponent Botes, N (Naomi)
3	3	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Langson, T (Thomas)				Opponent Wehmeyer, A (Andre)

#	Games	Start				End
1	8	Tournament 2018 Swartkop Proewe				Tournament 2018 D4 Tshwane North Individual Chess Championships
		date 2018-03-09	rnd 1	type Standard	result 1	date 2018-03-10	rnd 3	type Standard	result 1
		Opponent Jordaan, M (Markus)				Opponent Collett, J (Joshua Sean)
2	3	Tournament 2019 RMS Laerskole				Tournament 2019 RMS Laerskole
		date 2019-06-01	rnd 2	type Standard	result 1	date 2019-06-01	rnd 4	type Standard	result 1
		Opponent Sebake, P (Phalafalo)				Opponent Nunes, D (Duarte)
3	3	Tournament 2019 D4 Individual Finals				Tournament 2019 D4 Individual Finals
		date 2019-03-09	rnd 3	type Standard	result 1	date 2019-03-09	rnd 5	type Standard	result 1
		Opponent Kluge, H (Hermann)				Opponent Mostert, M (Mj)

#	Games	Start				End
1	6	Tournament Swartkop LS Proewe 2020				Tournament D4 Individuals 2022
		date 2020-02-21	rnd 1	type Rapid	result 1	date 2022-04-23	rnd 1	type Rapid	result 1
		Opponent Du Toit, D (Dylan Paul)				Opponent Van Staden, R (Rikus)
2	3	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Langson, T (Thomas)				Opponent Wehmeyer, A (Andre)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament 2018 Swartkop Proewe				Tournament 2018 D4 Tshwane North Individual Chess Championships
		date 2018-03-09	rnd 1	type Standard	result 1	date 2018-03-10	rnd 3	type Standard	result 1
		Opponent Jordaan, M (Markus)				Opponent Collett, J (Joshua Sean)
2	5	Tournament Swartkop LS Proewe 2020				Tournament Swartkop LS Proewe 2020
		date 2020-02-21	rnd 1	type Rapid	result 1	date 2020-02-21	rnd 5	type Rapid	result 1
		Opponent Du Toit, D (Dylan Paul)				Opponent Botes, N (Naomi)
3	3	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Langson, T (Thomas)				Opponent Wehmeyer, A (Andre)

#	Games	Start				End
1	8	Tournament 2018 Swartkop Proewe				Tournament 2018 D4 Tshwane North Individual Chess Championships
		date 2018-03-09	rnd 1	type Standard	result 1	date 2018-03-10	rnd 3	type Standard	result 1
		Opponent Jordaan, M (Markus)				Opponent Collett, J (Joshua Sean)
2	3	Tournament 2019 RMS Laerskole				Tournament 2019 RMS Laerskole
		date 2019-06-01	rnd 2	type Standard	result 1	date 2019-06-01	rnd 4	type Standard	result 1
		Opponent Sebake, P (Phalafalo)				Opponent Nunes, D (Duarte)
3	3	Tournament 2019 D4 Individual Finals				Tournament 2019 D4 Individual Finals
		date 2019-03-09	rnd 3	type Standard	result 1	date 2019-03-09	rnd 5	type Standard	result 1
		Opponent Kluge, H (Hermann)				Opponent Mostert, M (Mj)

#	Games	Start				End
1	6	Tournament Swartkop LS Proewe 2020				Tournament D4 Individuals 2022
		date 2020-02-21	rnd 1	type Rapid	result 1	date 2022-04-23	rnd 1	type Rapid	result 1
		Opponent Du Toit, D (Dylan Paul)				Opponent Van Staden, R (Rikus)
2	3	Tournament D4 Individuals 2022				Tournament D4 Individuals 2022
		date 2022-04-23	rnd 5	type Rapid	result 1	date 2022-04-23	rnd 7	type Rapid	result 1
		Opponent Langson, T (Thomas)				Opponent Wehmeyer, A (Andre)

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	Lourens ,J (Jurgen)	2	2	425	2	2	425	0	0	0	0	0	0
1	Lourens ,J (Jurgen)	2	1109.4	1534.4	2	1074	1534.4	0	0	0	0	0	0
2	Elliott ,C (Cayden)	2	1	0	2	1	0	0	0	0	0	0	0
2	Elliott ,C (Cayden)	2	1046.1	1046.1	2	1087.6	1046.1	0	0	0	0	0	0
3	Meades ,RA (Ruben Abraham)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
3	Meades ,RA (Ruben Abraham)	2	1172.9	1385.4	2	1162.2	1385.4	0	0	0	0	0	0
4	Reyneke ,M (Melindie)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Reyneke ,M (Melindie)	2	1291.8	866.8	2	1285.9	866.8	0	0	0	0	0	0
5	Olivier ,BM (Barnard Markus)	2	2	425	2	2	425	0	0	0	0	0	0
5	Olivier ,BM (Barnard Markus)	2	974.5	1399.6	2	961.8	1399.6	0	0	0	0	0	0
6	Klopper ,R (Rian)	2	0	-425	1	0	-425	1	0	-425	0	0	0
6	Klopper ,R (Rian)	2	1005	580	1	679.6	580	1	742.4	580	0	0	0
7	Schuster ,A (Ane)	2	2	425	1	1	425	1	1	425	0	0	0
7	Schuster ,A (Ane)	2	1149.2	1574.2	1	1200	1574.2	1	1200	1574.2	0	0	0
8	Fourie ,N (Nine Mari)	1	1	425	1	1	425	0	0	0	0	0	0
8	Fourie ,N (Nine Mari)	1	1354.4	1779.4	1	1348.3	1779.4	0	0	0	0	0	0
9	Claassen ,EG (Emileo Gerrit)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Claassen ,EG (Emileo Gerrit)	1	903.6	478.6	1	904	478.6	0	0	0	0	0	0
10	De Swardt ,C (Chrizander)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	De Swardt ,C (Chrizander)	1	898.3	473.3	1	898.7	473.3	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

Kleynhans, JC (Jacob Cornelius)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms