Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosman, P (Pieter)

Chess SA id

1140321401

FIDE id

Date of birth

2014-09-04 (U12)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-06

Personal details last changed

1900-01-01

Junior GPX Games

25.9

Junior GPX Points

1303.9

Item	Main	Standard	Rapid	Blitz
Rating	1417.5	1424.4	1200	1255.5
Raw rating	1358.6	1378.6	1200	1255.5
Weighted rating	1240.9	1243.6	1200	1216.7
Weighted performance	1417.5	1424.4	0	0
Floor	858.6	878.6	700	755.5
K-factor	36	36	36	36
Min/Max rating change allowed	132.3	128.6	165.8	153.2
Highest rating	1417.5 2025-09-30	1424.4 2025-09-30	1200 2025-06-01	1255.5 2025-07-01
Highest raw rating	1358.6 2025-09-30	1378.6 2025-09-30	1200 2025-06-01	1255.5 2025-07-01
Highest weighted rating	1240.9 2025-09-30	1243.6 2025-09-30	1200 2025-06-01	1208.7 2025-08-01
Highest weighted performance	1417.5 2025-09-30	1424.4 2025-09-30	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.5	-1.5	0	0
New rating	1416	1422.9	1200	1255.5
Analysis
Rating	1417.5	1424.4	1200	1255.5
Raw rating	1358.6	1378.6	1200	1255.5
Weighted rating	1240.9	1243.6	1200
Weighted performance	1417.5	1424.4	0
K-factor	36	36	36	36
Floor	858.6	878.6	700	755.5
Max/Min rating change allowed	132.3	128.6	165.8	153.2
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	1358.6	1378.6	1200	1255.5
New weighted rating	1251.8	1256	1200	1220.4
New weighted performance	1416	1422.9	0	0
Temp new rating	1416	1422.9	1200	1255.5
Temp new rating +/-	-1.5	-1.5	0	0
Final new rating +/-	-1.5	-1.5	0	0
New rating	1416	1422.9	1200	1255.5
New K-factor	36	36	36	36
New floor	858.6	878.6	700	755.5

Item	Main	Standard	Blitz
	0	0	0
	32	25	7
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	32	25	7

Games since
	Main 32	Standard 25		Rapid 0		Blitz 7
Gender	Male
Age group	U12
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	32	22	68.75	159.4	1284.5	1443.9
Standard	25	17	68	153	1292.2	1445.2
Rapid	0	0	0	0	0	0
Blitz	7	5	71.43	182.1	1257	1439.1
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	32	22	68.75	159.4	1284.5	1443.9
Standard	25	17	68	153	1292.2	1445.2
Rapid	0	0	0	0	0	0
Blitz	7	5	71.43	182.1	1257	1439.1

Date	Main	Standard	Rapid	Blitz
2025-09-30	1358.6	1378.6	1200	1255.5
2025-09-01	1349.9	1359.5	1200	1255.5
2025-08-01	1289.7	1286.4	1200	1255.5
2025-07-01	1293.1	1289.9	1200	1255.5
2025-06-01	1254.5	1267.5	1200	1200
2025-05-01	1200	1200	1200	1200
2025-04-01	1200	1200	1200	1200
2025-03-01	1200	1200	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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	Sedibeng Chess Open 06 Sept 2025 (E)	2025-09-06	2025-09-06	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
2	GDE (D7) Sedibeng East Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
3	Eureka Chess Open 26 July 2025 (G)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
4	HS Driehoek Chess Open 2025 (E)	2025-06-14	2025-06-14	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	Vaal Chess Club Blitz Open 31 May 2025 (B)	2025-05-31	2025-05-31	Blitz	Sedibeng (GSV)	7	7	5	Yes	Analysis
6	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Sedibeng Chess Open 06 Sept 2025 (E)	2025-09-06	2025-09-06	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
2	GDE (D7) Sedibeng East Schools 2025 (U13)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	5	5	Yes	Analysis
3	Eureka Chess Open 26 July 2025 (G)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
4	HS Driehoek Chess Open 2025 (E)	2025-06-14	2025-06-14	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
5	Vaal Chess Club Blitz Open 31 May 2025 (B)	2025-05-31	2025-05-31	Blitz	Sedibeng (GSV)	7	7	5	Yes	Analysis
6	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U11 Boys)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis

#	Games	Start				End
1	6	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament Sedibeng Chess Open 06 Sept 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Singwane, M (Melokuhle)				Opponent Nobete, G (Gomolemo)
2	5	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-24	rnd 2	type Standard	result 1	date 2025-05-31	rnd 1	type Blitz	result 1
		Opponent Laxa, S (Sithembiso)				Opponent Motaung, N (Ndapewa)
3	3	Tournament HS Driehoek Chess Open 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Sewdas, R (Riya)				Opponent Mohokare, R (Rorisang)

#	Games	Start				End
1	6	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament Sedibeng Chess Open 06 Sept 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Singwane, M (Melokuhle)				Opponent Nobete, G (Gomolemo)
2	5	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament HS Driehoek Chess Open 2025
		date 2025-05-24	rnd 2	type Standard	result 1	date 2025-06-14	rnd 1	type Standard	result 1
		Opponent Laxa, S (Sithembiso)				Opponent Kruger, B (Barend)
3	3	Tournament HS Driehoek Chess Open 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Sewdas, R (Riya)				Opponent Mohokare, R (Rorisang)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Vaal Chess Club Blitz Open 31 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-31	rnd 3	type Blitz	result 1	date 2025-05-31	rnd 5	type Blitz	result 1
		Opponent Mphanya, N (Naledi)				Opponent Nxuwa, T (Thoriso Lukhanye)
2	1	Tournament Vaal Chess Club Blitz Open 31 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-31	rnd 7	type Blitz	result 1	date 2025-05-31	rnd 7	type Blitz	result 1
		Opponent De Jager, C (Christo)				Opponent De Jager, C (Christo)
3	1	Tournament Vaal Chess Club Blitz Open 31 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-31	rnd 1	type Blitz	result 1	date 2025-05-31	rnd 1	type Blitz	result 1
		Opponent Motaung, N (Ndapewa)				Opponent Motaung, N (Ndapewa)

#	Games	Start				End
1	6	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament Sedibeng Chess Open 06 Sept 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Singwane, M (Melokuhle)				Opponent Nobete, G (Gomolemo)
2	5	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-24	rnd 2	type Standard	result 1	date 2025-05-31	rnd 1	type Blitz	result 1
		Opponent Laxa, S (Sithembiso)				Opponent Motaung, N (Ndapewa)
3	3	Tournament HS Driehoek Chess Open 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Sewdas, R (Riya)				Opponent Mohokare, R (Rorisang)

#	Games	Start				End
1	6	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament Sedibeng Chess Open 06 Sept 2025
		date 2025-08-02	rnd 1	type Standard	result 1	date 2025-09-06	rnd 1	type Standard	result 1
		Opponent Singwane, M (Melokuhle)				Opponent Nobete, G (Gomolemo)
2	5	Tournament GDE Sedibeng East Schools - D7 Individuals 24 May 2025				Tournament HS Driehoek Chess Open 2025
		date 2025-05-24	rnd 2	type Standard	result 1	date 2025-06-14	rnd 1	type Standard	result 1
		Opponent Laxa, S (Sithembiso)				Opponent Kruger, B (Barend)
3	3	Tournament HS Driehoek Chess Open 2025				Tournament Eureka Chess Open 26 July 2025
		date 2025-06-14	rnd 4	type Standard	result 1	date 2025-07-26	rnd 1	type Standard	result 1
		Opponent Sewdas, R (Riya)				Opponent Mohokare, R (Rorisang)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament Vaal Chess Club Blitz Open 31 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-31	rnd 3	type Blitz	result 1	date 2025-05-31	rnd 5	type Blitz	result 1
		Opponent Mphanya, N (Naledi)				Opponent Nxuwa, T (Thoriso Lukhanye)
2	1	Tournament Vaal Chess Club Blitz Open 31 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-31	rnd 7	type Blitz	result 1	date 2025-05-31	rnd 7	type Blitz	result 1
		Opponent De Jager, C (Christo)				Opponent De Jager, C (Christo)
3	1	Tournament Vaal Chess Club Blitz Open 31 May 2025				Tournament Vaal Chess Club Blitz Open 31 May 2025
		date 2025-05-31	rnd 1	type Blitz	result 1	date 2025-05-31	rnd 1	type Blitz	result 1
		Opponent Motaung, N (Ndapewa)				Opponent Motaung, N (Ndapewa)

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	Nobete ,G (Gomolemo)	3	3	425	3	3	425	0	0	0	0	0	0
1	Nobete ,G (Gomolemo)	3	1204.8	1629.8	3	1174.7	1629.8	0	0	0	0	0	0
2	Du Toit ,M (Monika)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Du Toit ,M (Monika)	2	1505.6	1080.6	2	1525.1	1080.6	0	0	0	0	0	0
3	Conradie ,LP (Lianro Pierre)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Conradie ,LP (Lianro Pierre)	2	1631.6	1206.6	2	1610	1206.6	0	0	0	0	0	0
4	Mehlomakulu ,M (Mpendulo)	2	1	0	2	1	0	0	0	0	0	0	0
4	Mehlomakulu ,M (Mpendulo)	2	1230.7	1230.7	2	1261.1	1230.7	0	0	0	0	0	0
5	Mohokare ,R (Rorisang)	2	2	425	1	1	425	0	0	0	1	1	425
5	Mohokare ,R (Rorisang)	2	1161.9	1586.9	1	1157.9	1586.9	0	0	0	1	1200	1586.9
6	Mamadisa ,B (Basetsana)	1	1	425	1	1	425	0	0	0	0	0	0
6	Mamadisa ,B (Basetsana)	1	1185.3	1610.3	1	1181.9	1610.3	0	0	0	0	0	0
7	Pillay ,Y (Yishai)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Pillay ,Y (Yishai)	1	1480.9	1055.9	1	1477.7	1055.9	0	0	0	0	0	0
8	Monaheng ,B (Bokamoso Kabelo)	1	1	425	1	1	425	0	0	0	0	0	0
8	Monaheng ,B (Bokamoso Kabelo)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Esterhuizen ,E (Erich)	1	1	425	1	1	425	0	0	0	0	0	0
9	Esterhuizen ,E (Erich)	1	1184.3	1609.3	1	1183.5	1609.3	0	0	0	0	0	0
10	Visser ,A (Aidan)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Visser ,A (Aidan)	1	1397.4	972.4	1	1398.8	972.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Bosman, P (Pieter)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms