Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coertzen, Z (Za-Niel)

Chess SA id

2040131172

FIDE id

Date of birth

2004-04-21 (Adult)

Gender

Female

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2022-08-12

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1154.8	1198.4	1115.6	1200
Raw rating	1154.8	1198.4	1115.6	1200
Weighted rating	1154.8	1198.4	1115.6	1200
Weighted performance	0	0	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	176.8	166.2	187	165.8
Highest rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2019-12-01	1200 2019-12-01	1200 2019-12-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1154.8	1198.4	1115.6	1200
Analysis
Rating	1154.8	1198.4	1115.6	1200
Raw rating	1154.8	1198.4	1115.6	1200
Weighted rating	1154.8	1198.4	1115.6
Weighted performance	0	0	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	176.8	166.2	187	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	1154.8	1198.4	1115.6	1200
New weighted rating	1154.8	1198.4	1115.6	1200
New weighted performance	0	0	0	0
Temp new rating	1154.8	1198.4	1115.6	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1154.8	1198.4	1115.6	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	10	0	10
	4	0	4
History	17	3	14

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Female
Age group	Adult
Region	Mangaung (FMB)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Female	-1		-1		-1
Adult	-1		-1		-1
Adult Female	-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	17	6.5	38.24	-100	1190.7	1090.7
Standard	3	1.5	50	0	1177.2	1177.2
Rapid	14	5	35.71	-121.4	1193.6	1072.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1154.8	1198.4	1115.6	1200
2025-09-01	1154.8	1198.4	1115.6	1200
2025-08-01	1154.8	1198.4	1115.6	1200
2025-07-01	1154.8	1198.4	1115.6	1200
2025-06-01	1154.8	1198.4	1115.6	1200
2025-05-01	1154.8	1198.4	1115.6	1200
2025-04-01	1154.8	1198.4	1115.6	1200
2025-03-01	1154.8	1198.4	1115.6	1200
2025-02-01	1154.8	1198.4	1115.6	1200
2025-01-01	1154.8	1198.4	1115.6	1200
2024-12-01	1154.8	1198.4	1115.6	1200
2024-11-01	1154.8	1198.4	1115.6	1200
2024-10-01	1154.8	1198.4	1115.6	1200
2024-09-01	1154.8	1198.4	1115.6	1200
2024-08-01	1154.8	1198.4	1115.6	1200
2024-07-01	1154.8	1198.4	1115.6	1200
2024-06-01	1154.8	1198.4	1115.6	1200
2024-08-01	1154.8	1198.4	1115.6	1200
2024-04-01	1154.8	1198.4	1115.6	1200
2024-03-01	1154.8	1198.4	1115.6	1200
2024-02-01	1154.8	1198.4	1115.6	1200
2024-01-01	1154.8	1198.4	1115.6	1200
2023-12-01	1154.8	1198.4	1115.6	1200
2023-11-01	1154.8	1198.4	1115.6	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	Bloemfontein School League 2022 (U19)	2022-08-12	2022-08-12	Rapid	Mangaung (FMB)	5	5	2	Yes	Analysis
2	Bloemfontein Schools League 2022 (U19+Open)	2022-02-25	2022-02-25	Rapid	Mangaung (FMB)	5	5	3	Yes	Analysis
3	Morris Chess Club Challenge 2021	2021-04-10	2021-04-10	Rapid	Mangaung (FMB)	5	4	0	Yes	Analysis
4	Morris Club Tournament 2020	2020-02-15	2020-02-15	Standard	Mangaung (FMB)	5	3	1.5	Yes	Analysis

#	Games	Start				End
1	3	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein School League 2022
		date 2022-02-25	rnd 4	type Rapid	result 1	date 2022-08-12	rnd 1	type Rapid	result 1
		Opponent Pretorius, C (Chad)				Opponent Rossouw, H (Hardus)
2	2	Tournament Morris Club Tournament 2020				Tournament Morris Club Tournament 2020
		date 2020-02-15	rnd 3	type Standard	result 0.5	date 2020-02-15	rnd 5	type Standard	result 1
		Opponent Fokase, T (Tshepang)				Opponent Mhlontlo, K (Kamohelo)
3	1	Tournament Bloemfontein School League 2022				Tournament Bloemfontein School League 2022
		date 2022-08-12	rnd 3	type Rapid	result 1	date 2022-08-12	rnd 3	type Rapid	result 1
		Opponent Nthunya, M (Mpho)				Opponent Nthunya, M (Mpho)

#	Games	Start				End
1	2	Tournament Morris Club Tournament 2020				Tournament Morris Club Tournament 2020
		date 2020-02-15	rnd 3	type Standard	result 0.5	date 2020-02-15	rnd 5	type Standard	result 1
		Opponent Fokase, T (Tshepang)				Opponent Mhlontlo, K (Kamohelo)

#	Games	Start				End
1	3	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein School League 2022
		date 2022-02-25	rnd 4	type Rapid	result 1	date 2022-08-12	rnd 1	type Rapid	result 1
		Opponent Pretorius, C (Chad)				Opponent Rossouw, H (Hardus)
2	1	Tournament Bloemfontein School League 2022				Tournament Bloemfontein School League 2022
		date 2022-08-12	rnd 3	type Rapid	result 1	date 2022-08-12	rnd 3	type Rapid	result 1
		Opponent Nthunya, M (Mpho)				Opponent Nthunya, M (Mpho)
3	1	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein Schools League 2022
		date 2022-02-25	rnd 1	type Rapid	result 1	date 2022-02-25	rnd 1	type Rapid	result 1
		Opponent Seletswane, U (Unathi)				Opponent Seletswane, U (Unathi)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein School League 2022
		date 2022-02-25	rnd 4	type Rapid	result 1	date 2022-08-12	rnd 1	type Rapid	result 1
		Opponent Pretorius, C (Chad)				Opponent Rossouw, H (Hardus)
2	1	Tournament Bloemfontein School League 2022				Tournament Bloemfontein School League 2022
		date 2022-08-12	rnd 3	type Rapid	result 1	date 2022-08-12	rnd 3	type Rapid	result 1
		Opponent Nthunya, M (Mpho)				Opponent Nthunya, M (Mpho)
3	1	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein Schools League 2022
		date 2022-02-25	rnd 1	type Rapid	result 1	date 2022-02-25	rnd 1	type Rapid	result 1
		Opponent Seletswane, U (Unathi)				Opponent Seletswane, U (Unathi)

#	Games	Start				End
1	1	Tournament Morris Club Tournament 2020				Tournament Morris Club Tournament 2020
		date 2020-02-15	rnd 5	type Standard	result 1	date 2020-02-15	rnd 5	type Standard	result 1
		Opponent Mhlontlo, K (Kamohelo)				Opponent Mhlontlo, K (Kamohelo)

#	Games	Start				End
1	3	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein School League 2022
		date 2022-02-25	rnd 4	type Rapid	result 1	date 2022-08-12	rnd 1	type Rapid	result 1
		Opponent Pretorius, C (Chad)				Opponent Rossouw, H (Hardus)
2	1	Tournament Bloemfontein School League 2022				Tournament Bloemfontein School League 2022
		date 2022-08-12	rnd 3	type Rapid	result 1	date 2022-08-12	rnd 3	type Rapid	result 1
		Opponent Nthunya, M (Mpho)				Opponent Nthunya, M (Mpho)
3	1	Tournament Bloemfontein Schools League 2022				Tournament Bloemfontein Schools League 2022
		date 2022-02-25	rnd 1	type Rapid	result 1	date 2022-02-25	rnd 1	type Rapid	result 1
		Opponent Seletswane, U (Unathi)				Opponent Seletswane, U (Unathi)

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	Motae ,K (Kamohelo)	2	0	-425	0	0	0	2	0	-425	0	0	0
1	Motae ,K (Kamohelo)	2	1200	775	0	0	0	2	1200	775	0	0	0
2	Mathibeli ,R (Rethabile)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Mathibeli ,R (Rethabile)	1	1200	775	1	1200	775	0	0	0	0	0	0
3	Fokase ,T (Tshepang)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
3	Fokase ,T (Tshepang)	1	1212.8	1212.8	1	1223.6	1212.8	0	0	0	0	0	0
4	Mhlontlo ,K (Kamohelo)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mhlontlo ,K (Kamohelo)	1	1118.7	1543.7	1	1101.2	1543.7	0	0	0	0	0	0
5	Olivier ,R (Riley)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Olivier ,R (Riley)	1	1252.2	827.2	0	0	0	1	1200	827.2	0	0	0
6	Mitchell ,V (Vanadium)	1	0	-425	0	0	0	1	0	-425	0	0	0
6	Mitchell ,V (Vanadium)	1	1366.7	941.7	0	0	0	1	1214.4	941.7	0	0	0
7	Barnes ,D (Damien)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Barnes ,D (Damien)	1	1187.6	762.6	0	0	0	1	1180	762.6	0	0	0
8	Rossouw ,H (Hardus)	1	1	425	0	0	0	1	1	425	0	0	0
8	Rossouw ,H (Hardus)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
9	Molelekoa ,R (Retshepile)	1	0	-425	0	0	0	1	0	-425	0	0	0
9	Molelekoa ,R (Retshepile)	1	1200	775	0	0	0	1	1200	775	0	0	0
10	Shaba ,K (Keneuwe)	1	0	-425	0	0	0	1	0	-425	0	0	0
10	Shaba ,K (Keneuwe)	1	936.6	511.6	0	0	0	1	866.6	511.6	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

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PLAYER PAGE

Personal

Coertzen, Z (Za-Niel)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms