Chess South Africa Ratings Database

PLAYER PAGE

Personal

Lotz, J (Johndre)

Chess SA id

1070099829

FIDE id

Date of birth

2007-10-28 (U20)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-03-15

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1169.3	1144.3	1258.4	1200
Raw rating	1169.3	1144.3	1258.4	1200
Weighted rating	1169.3	1144.3	1258.4	1200
Weighted performance	299	255.9	0	0
Floor	739.6	746.2	758.4	700
K-factor	36	36	36	36
Min/Max rating change allowed	173.2	179.5	152.6	165.8
Highest rating	1261.8 2019-08-01	1259.5 2019-08-01	1467 2020-01-01	1200 2018-10-01
Highest raw rating	1239.6 2019-09-01	1246.2 2019-09-01	1258.4 2024-02-01	1200 2024-02-01
Highest weighted rating	1239.6 2018-02-01	1246.2 2018-02-01	1258.4 2024-02-01	1200 2018-10-01
Highest weighted performance	1261.8 2019-08-01	1259.5 2019-08-01	1467 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1169.3	1144.3	1258.4	1200
Analysis
Rating	1169.3	1144.3	1258.4	1200
Raw rating	1169.3	1144.3	1258.4	1200
Weighted rating	1169.3	1144.3	1258.4
Weighted performance	299	255.9	0
K-factor	36	36	36	36
Floor	739.6	746.2	758.4	700
Max/Min rating change allowed	173.2	179.5	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	1169.3	1144.3	1258.4	1200
New weighted rating	1169.3	1144.3	1258.4	1200
New weighted performance	292.4	249.5	0	0
Temp new rating	1169.3	1144.3	1258.4	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1169.3	1144.3	1258.4	1200
New K-factor	36	36	36	36
New floor	739.6	746.2	758.4	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	31	26	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	31	17	54.84	41.1	1129.2	1170.3
Standard	26	13	50	0	1131.9	1131.9
Rapid	5	4	80	255	1115.3	1370.3
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1169.3	1144.3	1258.4	1200
2025-09-30	1169.3	1144.3	1258.4	1200
2025-09-01	1169.3	1144.3	1258.4	1200
2025-08-01	1169.3	1144.3	1258.4	1200
2025-07-01	1169.3	1144.3	1258.4	1200
2025-06-01	1169.3	1144.3	1258.4	1200
2025-05-01	1169.3	1144.3	1258.4	1200
2025-04-01	1169.3	1144.3	1258.4	1200
2025-03-01	1169.3	1144.3	1258.4	1200
2025-02-01	1169.3	1144.3	1258.4	1200
2025-01-01	1169.3	1144.3	1258.4	1200
2024-12-01	1169.3	1144.3	1258.4	1200
2024-11-01	1169.3	1144.3	1258.4	1200
2024-10-01	1169.3	1144.3	1258.4	1200
2024-09-01	1169.3	1144.3	1258.4	1200
2024-08-01	1169.3	1144.3	1258.4	1200
2024-07-01	1169.3	1144.3	1258.4	1200
2024-09-01	1169.3	1144.3	1258.4	1200
2024-05-01	1169.3	1144.3	1258.4	1200
2024-04-01	1169.3	1144.3	1258.4	1200
2024-03-01	1169.3	1144.3	1258.4	1200
2024-02-01	1169.3	1144.3	1258.4	1200
2024-01-01	1169.3	1144.3	1258.4	1200
2023-12-01	1169.3	1144.3	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	Overberg Closed 2020 (U15 Boys)	2020-03-15	2020-03-15	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
2	OCF Open 2020 (U14)	2020-01-25	2020-01-25	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
3	Western Cape Top Schools 2019 (U15 Mix)	2019-08-31	2019-09-01	Standard	Cape Winelands (WCW)	5	5	1	Yes	Analysis
4	Bontebok 2019 (U12)	2019-08-17	2019-08-17	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
5	Overberg Top Schools 2019 (U11)	2019-07-20	2019-07-20	Standard	Overberg (WOS)	5	5	4	Yes	Analysis
6	Overberg Schools Closed 2018 (U11 Boys)	2018-03-23	2018-03-23	Standard	Overberg (WOS)	6	6	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Overberg Schools Closed 2018				Tournament Overberg Top Schools 2019
		date 2018-03-23	rnd 5	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Burger, B (Bartho)				Opponent Oosthuizen, A (Anke)
2	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 4	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Michau, D (Dehann)				Opponent Van Der Merwe, J (Jan Hendrik)
3	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 1	type Rapid	result 1	date 2020-01-25	rnd 2	type Rapid	result 1
		Opponent Fourie, T (Tristan)				Opponent Bester, E (Emma)

#	Games	Start				End
1	6	Tournament Overberg Schools Closed 2018				Tournament Overberg Top Schools 2019
		date 2018-03-23	rnd 5	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Burger, B (Bartho)				Opponent Oosthuizen, A (Anke)
2	1	Tournament Overberg Closed 2020				Tournament Overberg Closed 2020
		date 2020-03-15	rnd 4	type Standard	result 1	date 2020-03-15	rnd 4	type Standard	result 1
		Opponent Baadjies, L (Lindrynn)				Opponent Baadjies, L (Lindrynn)
3	1	Tournament Overberg Closed 2020				Tournament Overberg Closed 2020
		date 2020-03-15	rnd 2	type Standard	result 1	date 2020-03-15	rnd 2	type Standard	result 1
		Opponent Hoogbaard, D (Dillon)				Opponent Hoogbaard, D (Dillon)

#	Games	Start				End
1	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 4	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Michau, D (Dehann)				Opponent Van Der Merwe, J (Jan Hendrik)
2	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 1	type Rapid	result 1	date 2020-01-25	rnd 2	type Rapid	result 1
		Opponent Fourie, T (Tristan)				Opponent Bester, E (Emma)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Overberg Schools Closed 2018				Tournament Overberg Top Schools 2019
		date 2018-03-23	rnd 5	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Burger, B (Bartho)				Opponent Oosthuizen, A (Anke)
2	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 4	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Michau, D (Dehann)				Opponent Van Der Merwe, J (Jan Hendrik)
3	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 1	type Rapid	result 1	date 2020-01-25	rnd 2	type Rapid	result 1
		Opponent Fourie, T (Tristan)				Opponent Bester, E (Emma)

#	Games	Start				End
1	6	Tournament Overberg Schools Closed 2018				Tournament Overberg Top Schools 2019
		date 2018-03-23	rnd 5	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Burger, B (Bartho)				Opponent Oosthuizen, A (Anke)
2	1	Tournament Overberg Closed 2020				Tournament Overberg Closed 2020
		date 2020-03-15	rnd 4	type Standard	result 1	date 2020-03-15	rnd 4	type Standard	result 1
		Opponent Baadjies, L (Lindrynn)				Opponent Baadjies, L (Lindrynn)
3	1	Tournament Overberg Closed 2020				Tournament Overberg Closed 2020
		date 2020-03-15	rnd 2	type Standard	result 1	date 2020-03-15	rnd 2	type Standard	result 1
		Opponent Hoogbaard, D (Dillon)				Opponent Hoogbaard, D (Dillon)

#	Games	Start				End
1	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 4	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Michau, D (Dehann)				Opponent Van Der Merwe, J (Jan Hendrik)
2	2	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 1	type Rapid	result 1	date 2020-01-25	rnd 2	type Rapid	result 1
		Opponent Fourie, T (Tristan)				Opponent Bester, E (Emma)

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	Fourie ,T (Tristan)	2	1	0	1	0	-425	1	1	425	0	0	0
1	Fourie ,T (Tristan)	2	1071.7	1071.7	1	1200	646.7	1	1200	1496.7	0	0	0
2	Smal ,M (Michiel)	1	1	425	1	1	425	0	0	0	0	0	0
2	Smal ,M (Michiel)	1	623.4	1048.4	1	623.4	1048.4	0	0	0	0	0	0
3	Oosthuizen ,A (Anke)	1	1	425	1	1	425	0	0	0	0	0	0
3	Oosthuizen ,A (Anke)	1	1218.6	1643.6	1	1213.8	1643.6	0	0	0	0	0	0
4	Hoogbaard ,D (Dillon)	1	1	425	1	1	425	0	0	0	0	0	0
4	Hoogbaard ,D (Dillon)	1	1140.6	1565.6	1	1127.2	1565.6	0	0	0	0	0	0
5	Steenkamp ,L (Luka)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Steenkamp ,L (Luka)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Strydom ,D (Douw)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Strydom ,D (Douw)	1	534.8	109.8	1	534.8	109.8	0	0	0	0	0	0
7	Bester ,HN (Hugo Nicolaas)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Bester ,HN (Hugo Nicolaas)	1	1200	775	1	1200	775	0	0	0	0	0	0
8	Du Toit ,M (Marlo)	1	1	425	1	1	425	0	0	0	0	0	0
8	Du Toit ,M (Marlo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Carelse ,T (Taygon)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Carelse ,T (Taygon)	1	1138.8	713.8	1	1200	713.8	0	0	0	0	0	0
10	Van Zyl ,J (Johannes)	1	1	425	1	1	425	0	0	0	0	0	0
10	Van Zyl ,J (Johannes)	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

Lotz, J (Johndre)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms