Chess South Africa Ratings Database

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Personal

Osman, Z (Zechariah)

Chess SA id

1120158752

FIDE id

Date of birth

2012-04-25 (U14)

Gender

Male

Region

Gert Sibande (MGS)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1300.1	1200	1359.8	1200
Raw rating	1300.1	1200	1359.8	1200
Weighted rating	1272.2	1200	1312.8	1200
Weighted performance	1166.7	0	1248.1	0
Floor	800.1	700	859.8	700
K-factor	36	36	36	36
Min/Max rating change allowed	143.8	165.8	132	165.8
Highest rating	1437.9 2023-07-01	1200 2018-10-01	1543.8 2023-07-01	1200 2018-10-01
Highest raw rating	1300.1 2025-09-01	1200 2024-03-01	1359.8 2025-09-01	1200 2024-03-01
Highest weighted rating	1269.6 2025-09-01	1200 2018-10-01	1309.8 2025-07-01	1200 2018-10-01
Highest weighted performance	1437.9 2023-07-01	1200 2024-03-01	1543.8 2023-07-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1300.1	1200	1359.8	1200
Analysis
Rating	1300.1	1200	1359.8	1200
Raw rating	1300.1	1200	1359.8	1200
Weighted rating	1272.2	1200	1312.8
Weighted performance	1166.7	0	1248.1
K-factor	36	36	36	36
Floor	800.1	700	859.8	700
Max/Min rating change allowed	143.8	165.8	132	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	1300.1	1200	1359.8	1200
New weighted rating	1274.7	1200	1316.8	1200
New weighted performance	1166.3	0	1247.6	0
Temp new rating	1300.1	1200	1359.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1300.1	1200	1359.8	1200
New K-factor	36	36	36	36
New floor	800.1	700	859.8	700

Item	Main	Rapid
	0	0
	5	5
	10	10
	10	10
	0	0
	0	0
History	25	25

Games since
	Main 15	Standard 0		Rapid 15		Blitz 0
Gender	Male
Age group	U14
Region	Gert Sibande (MGS)
Province	Mpumalanga (MP)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	5	4	80	255	1273.1	1528.1
Standard	0	0	0	0	0	0
Rapid	5	4	80	255	1273.1	1528.1
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	25	17.5	70	170	1236.1	1406.1
Standard	0	0	0	0	0	0
Rapid	25	17.5	70	170	1236.1	1406.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1300.1	1200	1359.8	1200
2025-09-01	1300.1	1200	1359.8	1200
2025-08-01	1268	1200	1304.5	1200
2025-07-01	1268	1200	1304.5	1200
2025-06-01	1268	1200	1304.5	1200
2025-05-01	1268	1200	1304.1	1200
2025-04-01	1268	1200	1303.5	1200
2025-03-01	1268	1200	1302.5	1200
2025-02-01	1268	1200	1301.3	1200
2025-01-01	1268	1200	1300.1	1200
2024-12-01	1268	1200	1300.1	1200
2024-11-01	1268	1200	1300.1	1200
2024-10-01	1268	1200	1300.1	1200
2024-09-01	1268	1200	1300.1	1200
2024-08-01	1263.7	1200	1309.8	1200
2024-07-01	1263.7	1200	1309.8	1200
2024-06-01	1263.7	1200	1309.8	1200
2024-08-01	1263.7	1200	1309.8	1200
2024-04-01	1263.7	1200	1309.8	1200
2024-03-01	1263.7	1200	1309.8	1200
2024-02-01	1263.7	1200	1309.8	1200
2024-01-01	1263.7	1200	1309.8	1200
2023-12-01	1263.7	1200	1309.8	1200
2023-11-01	1263.7	1200	1309.8	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	Rookies Tournament Secunda 2025 (U13)	2025-08-08	2025-08-08	Rapid	Gert Sibande (MGS)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Rookies Tournament Secunda 2025 (U13)	2025-08-08	2025-08-08	Rapid	Gert Sibande (MGS)	5	5	4	Yes	Analysis
2	Top Schools Gert Sibande 2024 (U13)	2024-08-16	2024-08-16	Rapid	Gert Sibande (MGS)	5	5	3	Yes	Analysis
3	Govan Mbeki 2024 (U13)	2024-08-02	2024-08-02	Rapid	Gert Sibande (MGS)	5	5	3	Yes	Analysis
4	Govin Mbeki Teams Chess Tournament 2023 (U11)	2023-08-18	2023-08-18	Rapid	Gert Sibande (MGS)	5	5	3.5	Yes	Analysis
5	Ho�veldgroep 2023 (O11)	2023-07-28	2023-07-28	Rapid	Gert Sibande (MGS)	5	5	4	Yes	Analysis

#	Games	Start				End
1	7	Tournament Ho�veldgroep 2023				Tournament Govin Mbeki Teams Chess Tournament 2023
		date 2023-07-28	rnd 3	type Rapid	result 1	date 2023-08-18	rnd 4	type Rapid	result 1
		Opponent Herbst, A (Anthony)				Opponent Du Toit, N (Nua)
2	4	Tournament Govan Mbeki 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-02	rnd 5	type Rapid	result 1	date 2024-08-16	rnd 3	type Rapid	result 1
		Opponent Mpiti, T (Thekiso)				Opponent Phakathi, S (Siyanda)
3	3	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Van Niekerk, L (Lohan)				Opponent Coetzee, M (Markus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Ho�veldgroep 2023				Tournament Govin Mbeki Teams Chess Tournament 2023
		date 2023-07-28	rnd 3	type Rapid	result 1	date 2023-08-18	rnd 4	type Rapid	result 1
		Opponent Herbst, A (Anthony)				Opponent Du Toit, N (Nua)
2	4	Tournament Govan Mbeki 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-02	rnd 5	type Rapid	result 1	date 2024-08-16	rnd 3	type Rapid	result 1
		Opponent Mpiti, T (Thekiso)				Opponent Phakathi, S (Siyanda)
3	3	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Van Niekerk, L (Lohan)				Opponent Coetzee, M (Markus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Ho�veldgroep 2023				Tournament Govin Mbeki Teams Chess Tournament 2023
		date 2023-07-28	rnd 3	type Rapid	result 1	date 2023-08-18	rnd 2	type Rapid	result 1
		Opponent Herbst, A (Anthony)				Opponent Mtsweni, L (Lungelo)
2	4	Tournament Govan Mbeki 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-02	rnd 5	type Rapid	result 1	date 2024-08-16	rnd 3	type Rapid	result 1
		Opponent Mpiti, T (Thekiso)				Opponent Phakathi, S (Siyanda)
3	3	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Van Niekerk, L (Lohan)				Opponent Coetzee, M (Markus)

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Ho�veldgroep 2023				Tournament Govin Mbeki Teams Chess Tournament 2023
		date 2023-07-28	rnd 3	type Rapid	result 1	date 2023-08-18	rnd 2	type Rapid	result 1
		Opponent Herbst, A (Anthony)				Opponent Mtsweni, L (Lungelo)
2	4	Tournament Govan Mbeki 2024				Tournament Top Schools Gert Sibande 2024
		date 2024-08-02	rnd 5	type Rapid	result 1	date 2024-08-16	rnd 3	type Rapid	result 1
		Opponent Mpiti, T (Thekiso)				Opponent Phakathi, S (Siyanda)
3	3	Tournament Rookies Tournament Secunda 2025				Tournament Rookies Tournament Secunda 2025
		date 2025-08-08	rnd 1	type Rapid	result 1	date 2025-08-08	rnd 3	type Rapid	result 1
		Opponent Van Niekerk, L (Lohan)				Opponent Coetzee, M (Markus)

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	Coetzee ,M (Markus)	3	2.5	283.3	0	0	0	3	2.5	283.3	0	0	0
1	Coetzee ,M (Markus)	3	1280.5	1563.8	0	0	0	3	1342.2	1563.8	0	0	0
2	Mtsweni ,L (Lungelo)	3	1	-141.7	0	0	0	3	1	-141.7	0	0	0
2	Mtsweni ,L (Lungelo)	3	1375.5	1233.8	0	0	0	3	1453.9	1233.8	0	0	0
3	Shaij ,U (Uzayr Ali)	1	1	425	0	0	0	1	1	425	0	0	0
3	Shaij ,U (Uzayr Ali)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
4	Phakathi ,S (Siyanda)	1	1	425	0	0	0	1	1	425	0	0	0
4	Phakathi ,S (Siyanda)	1	1200	1625	0	0	0	1	1200	1625	0	0	0
5	Mhlongo ,K (Khabelihle)	1	0	-425	0	0	0	1	0	-425	0	0	0
5	Mhlongo ,K (Khabelihle)	1	1218.3	793.3	0	0	0	1	1161.2	793.3	0	0	0
6	Botha ,Z (Zak)	1	1	425	0	0	0	1	1	425	0	0	0
6	Botha ,Z (Zak)	1	1246.6	1671.6	0	0	0	1	1262.2	1671.6	0	0	0
7	Skhosana ,N (Nklakanipho)	1	0	-425	0	0	0	1	0	-425	0	0	0
7	Skhosana ,N (Nklakanipho)	1	1221	796	0	0	0	1	1238.9	796	0	0	0
8	Van Niekerk ,L (Lohan)	1	1	425	0	0	0	1	1	425	0	0	0
8	Van Niekerk ,L (Lohan)	1	1200.9	1625.9	0	0	0	1	1204	1625.9	0	0	0
9	Mpiti ,T (Thekiso)	1	1	425	0	0	0	1	1	425	0	0	0
9	Mpiti ,T (Thekiso)	1	1210.6	1635.6	0	0	0	1	1216.9	1635.6	0	0	0
10	Du Toit ,N (Nua)	1	1	425	0	0	0	1	1	425	0	0	0
10	Du Toit ,N (Nua)	1	1242	1667	0	0	0	1	1271	1667	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Osman, Z (Zechariah)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms