Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosman, N (Nathan Dean)

Chess SA id

1160159457

FIDE id

Date of birth

2016-10-13 (U10)

Gender

Male

Region

Sedibeng (GSV)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

42.4

Junior GPX Points

1148.3

Item	Main	Standard	Rapid	Blitz
Rating	1279	1260.5	1197.8	1200
Raw rating	1248.6	1253.6	1197.8	1200
Weighted rating	1171.9	1161.2	1197.7	1200
Weighted performance	1279	1260.5	0	0
Floor	748.6	753.6	703.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	154.7	153.6	166.3	165.8
Highest rating	1292.1 2025-09-01	1273.4 2025-09-01	1203.6 2024-12-01	1200 2018-10-01
Highest raw rating	1248.6 2025-09-01	1253.6 2025-09-01	1203.6 2024-12-01	1200 2024-03-01
Highest weighted rating	1200 2018-10-01	1200 2018-10-01	1203.6 2018-10-01	1200 2018-10-01
Highest weighted performance	1292.1 2025-09-01	1273.4 2025-09-01	1200 2024-03-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.5	-0.4	0	0
New rating	1278.5	1260	1197.8	1200
Analysis
Rating	1279	1260.5	1197.8	1200
Raw rating	1248.6	1253.6	1197.8	1200
Weighted rating	1171.9	1161.2	1197.7
Weighted performance	1279	1260.5	0
K-factor	36	36	36	36
Floor	748.6	753.6	703.6	700
Max/Min rating change allowed	154.7	153.6	166.3	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	1248.6	1253.6	1197.8	1200
New weighted rating	1178.3	1168.8	1197.7	1200
New weighted performance	1278.5	1260	0	0
Temp new rating	1278.5	1260	1197.8	1200
Temp new rating +/-	-0.5	-0.4	0	0
Final new rating +/-	-0.5	-0.4	0	0
New rating	1278.5	1260	1197.8	1200
New K-factor	36	36	36	36
New floor	748.6	753.6	703.6	700

Item	Main	Standard	Rapid
	0	0	0
	28	23	5
	52	40	12
	9	9	0
	0	0	0
	0	0	0
History	89	72	17

Games since
	Main 80	Standard 63		Rapid 17		Blitz 0
Gender	Male
Age group	U10
Region	Sedibeng (GSV)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3384		1117		131
Male	2639		875		106
U10	290		109		8
U10 Male	232		93		8
Standard
	RSA		Province		Region
Overall	3417		1212		143
Male	2638		944		112
U10	293		121		9
U10 Male	235		106		9
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U10	-1		-1		-1
U10 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	28	13	46.43	-30.4	1289.5	1259.2
Standard	23	11	47.83	-18.5	1276.7	1258.2
Rapid	5	2	40	-85	1348.7	1263.7
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	89	37.5	42.13	-66.9	1234.9	1168
Standard	72	29.5	40.97	-76.7	1227.6	1150.8
Rapid	17	8	47.06	-25	1265.9	1240.9
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1248.6	1253.6	1197.8	1200
2025-09-01	1248.6	1253.6	1197.8	1200
2025-08-01	1190.2	1183.1	1197.8	1200
2025-07-01	1177.5	1167.6	1197.8	1200
2025-06-01	1177.5	1167.6	1197.8	1200
2025-05-01	1158	1141.6	1197.8	1200
2025-04-01	1158	1141.6	1197.6	1200
2025-03-01	1155.2	1143.4	1203.6	1200
2025-02-01	1153.5	1139.6	1203.6	1200
2025-01-01	1109.5	1066.2	1203.6	1200
2024-12-01	1127.1	1075.9	1203.6	1200
2024-11-01	1091.7	1075.9	1187.4	1200
2024-10-01	1173.9	1174.5	1187.4	1200
2024-09-01	1173.9	1174.5	1187.4	1200
2024-08-01	1148.8	1147.1	1187.4	1200
2024-07-01	1158.5	1152.9	1200	1200
2024-06-01	1134.9	1123	1200	1200
2024-08-01	1134.9	1123	1200	1200
2024-04-01	1187.2	1184.9	1200	1200
2024-03-01	1187.2	1184.9	1200	1200
2024-02-01	1187.2	1184.9	1200	1200
2024-01-01	1187.2	1184.9	1200	1200
2023-12-01	1187.2	1184.9	1200	1200
2023-11-01	1187.2	1184.9	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	GDE (D7) Sedibeng East Schools 2025 (U9+U11)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
2	Eureka Chess Open 26 July 2025 (H)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U9)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	Destinata Rapid Open 025 (E+F)	2025-03-15	2025-03-15	Rapid	Sedibeng (GSV)	6	5	2	Yes	Analysis
5	Laerskool Vaalpark Open 01 March 25 (F)	2025-03-01	2025-03-01	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
6	Laer Volkskool Open 15 Feb 2025 (F)	2025-02-15	2025-02-15	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	GDE (D7) Sedibeng East Schools 2025 (U9+U11)	2025-08-02	2025-08-02	Standard	Sedibeng (GSV)	5	5	4	Yes	Analysis
2	Eureka Chess Open 26 July 2025 (H)	2025-07-26	2025-07-26	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
3	GDE Sedibeng East Schools - D7 Individuals 24 May 2025 (U9)	2025-05-24	2025-05-24	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
4	Destinata Rapid Open 025 (E+F)	2025-03-15	2025-03-15	Rapid	Sedibeng (GSV)	6	5	2	Yes	Analysis
5	Laerskool Vaalpark Open 01 March 25 (F)	2025-03-01	2025-03-01	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
6	Laer Volkskool Open 15 Feb 2025 (F)	2025-02-15	2025-02-15	Standard	Sedibeng (GSV)	5	4	1	Yes	Analysis
7	Gauteng Inter-Region at UJ 2024 (U10 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	2	Yes	Analysis
8	Laerskool Midvaal Rapid 16 Nov 2024 (E)	2024-11-16	2024-11-16	Rapid	Sedibeng (GSV)	5	5	3	Yes	Analysis
9	Heidelberg Open 05 October 2024 (E)	2024-10-05	2024-10-05	Standard	Sedibeng (GSV)	5	4	0	Yes	Analysis
10	Gauteng Top Schools 2024 (U9 Open)	2024-10-04	2024-10-04	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
11	Sedibeng East D7 Teams Trials 2024 (U9)	2024-08-03	2024-08-03	Standard	Sedibeng (GSV)	6	6	3	Yes	Analysis
12	Eureka Open 27 July 2024 (H)	2024-07-27	2024-07-27	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
13	Midvaal Winter Classic 13 July 2024 (F)	2024-07-13	2024-07-13	Rapid	Sedibeng (GSV)	7	7	3	Yes	Analysis
14	AG Visser Open 2024 (E)	2024-06-08	2024-06-08	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis
15	Vaalpark Primary Chess Open 2024 (E)	2024-04-13	2024-04-13	Standard	Sedibeng (GSV)	5	5	1.5	Yes	Analysis
16	HS Drie Riviere Chess Open Section 2024 (E)	2024-03-09	2024-03-09	Standard	Sedibeng (GSV)	5	5	2	Yes	Analysis
17	2023 Gauteng Top Schools (U9 Mixed)	2023-08-18	2023-08-18	Standard	West Rand (GWR)	5	4	1	Yes	Analysis
18	Gauteng D7 Teams 2023 (U9)	2023-08-12	2023-08-12	Standard	Sedibeng (GSV)	5	5	3	Yes	Analysis

#	Games	Start				End
1	3	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament GDE (D7) Sedibeng East Schools 2025
		date 2025-08-02	rnd 3	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Groenewald, A (Abigail)				Opponent Adme, M (Moges)
2	3	Tournament AG Visser Open 2024				Tournament AG Visser Open 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mnguni, N (Ntando Tsholofelo T)				Opponent Deneys, R (Rohan Joseph)
3	3	Tournament HS Drie Riviere Chess Open Section 2024				Tournament Vaalpark Primary Chess Open 2024
		date 2024-03-09	rnd 4	type Standard	result 1	date 2024-04-13	rnd 1	type Standard	result 0.5
		Opponent Madibana, M (Mohau)				Opponent Potgieter, J (Jan-Hendrik)

#	Games	Start				End
1	3	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament GDE (D7) Sedibeng East Schools 2025
		date 2025-08-02	rnd 3	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Groenewald, A (Abigail)				Opponent Adme, M (Moges)
2	3	Tournament AG Visser Open 2024				Tournament AG Visser Open 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mnguni, N (Ntando Tsholofelo T)				Opponent Deneys, R (Rohan Joseph)
3	3	Tournament HS Drie Riviere Chess Open Section 2024				Tournament Vaalpark Primary Chess Open 2024
		date 2024-03-09	rnd 4	type Standard	result 1	date 2024-04-13	rnd 1	type Standard	result 0.5
		Opponent Madibana, M (Mohau)				Opponent Potgieter, J (Jan-Hendrik)

#	Games	Start				End
1	2	Tournament Destinata Rapid Open 025				Tournament Destinata Rapid Open 025
		date 2025-03-15	rnd 2	type Rapid	result 1	date 2025-03-15	rnd 3	type Rapid	result 1
		Opponent Nxuwa, T (Thoriso Lukhanye)				Opponent Strydom, G (Graceson)
2	2	Tournament Laerskool Midvaal Rapid 16 Nov 2024				Tournament Laerskool Midvaal Rapid 16 Nov 2024
		date 2024-11-16	rnd 4	type Rapid	result 1	date 2024-11-16	rnd 5	type Rapid	result 1
		Opponent Strydom, G (Graceson)				Opponent Botes, M (Michael Prinsloo)
3	1	Tournament Laerskool Midvaal Rapid 16 Nov 2024				Tournament Laerskool Midvaal Rapid 16 Nov 2024
		date 2024-11-16	rnd 2	type Rapid	result 1	date 2024-11-16	rnd 2	type Rapid	result 1
		Opponent Myburgh, A (Alex)				Opponent Myburgh, A (Alex)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament GDE (D7) Sedibeng East Schools 2025
		date 2025-08-02	rnd 3	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Groenewald, A (Abigail)				Opponent Adme, M (Moges)
2	3	Tournament AG Visser Open 2024				Tournament AG Visser Open 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mnguni, N (Ntando Tsholofelo T)				Opponent Deneys, R (Rohan Joseph)
3	3	Tournament Gauteng D7 Teams 2023				Tournament Gauteng D7 Teams 2023
		date 2023-08-12	rnd 3	type Standard	result 1	date 2023-08-12	rnd 5	type Standard	result 1
		Opponent Le Roux, R (Riano)				Opponent Verster, R (Rachey)

#	Games	Start				End
1	3	Tournament GDE (D7) Sedibeng East Schools 2025				Tournament GDE (D7) Sedibeng East Schools 2025
		date 2025-08-02	rnd 3	type Standard	result 1	date 2025-08-02	rnd 5	type Standard	result 1
		Opponent Groenewald, A (Abigail)				Opponent Adme, M (Moges)
2	3	Tournament AG Visser Open 2024				Tournament AG Visser Open 2024
		date 2024-06-08	rnd 2	type Standard	result 1	date 2024-06-08	rnd 4	type Standard	result 1
		Opponent Mnguni, N (Ntando Tsholofelo T)				Opponent Deneys, R (Rohan Joseph)
3	3	Tournament Gauteng D7 Teams 2023				Tournament Gauteng D7 Teams 2023
		date 2023-08-12	rnd 3	type Standard	result 1	date 2023-08-12	rnd 5	type Standard	result 1
		Opponent Le Roux, R (Riano)				Opponent Verster, R (Rachey)

#	Games	Start				End
1	2	Tournament Destinata Rapid Open 025				Tournament Destinata Rapid Open 025
		date 2025-03-15	rnd 2	type Rapid	result 1	date 2025-03-15	rnd 3	type Rapid	result 1
		Opponent Nxuwa, T (Thoriso Lukhanye)				Opponent Strydom, G (Graceson)
2	2	Tournament Laerskool Midvaal Rapid 16 Nov 2024				Tournament Laerskool Midvaal Rapid 16 Nov 2024
		date 2024-11-16	rnd 4	type Rapid	result 1	date 2024-11-16	rnd 5	type Rapid	result 1
		Opponent Strydom, G (Graceson)				Opponent Botes, M (Michael Prinsloo)
3	1	Tournament Laerskool Midvaal Rapid 16 Nov 2024				Tournament Laerskool Midvaal Rapid 16 Nov 2024
		date 2024-11-16	rnd 2	type Rapid	result 1	date 2024-11-16	rnd 2	type Rapid	result 1
		Opponent Myburgh, A (Alex)				Opponent Myburgh, A (Alex)

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	Tshoeu ,B (Bogosi)	6	0	-425	5	0	-425	1	0	-425	0	0	0
1	Tshoeu ,B (Bogosi)	6	1373.4	948.4	5	1340.7	948.4	1	1257.9	948.4	0	0	0
2	Abdul ,MA (Muhammed Ayaan)	5	0	-425	5	0	-425	0	0	0	0	0	0
2	Abdul ,MA (Muhammed Ayaan)	5	1418.8	993.8	5	1418.9	993.8	0	0	0	0	0	0
3	Martin ,S (Sebastian)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
3	Martin ,S (Sebastian)	4	1206	993.5	4	1205.6	993.5	0	0	0	0	0	0
4	Swarts ,C (Ciara)	4	2	0	3	1	-141.7	1	1	425	0	0	0
4	Swarts ,C (Ciara)	4	1206.4	1206.4	3	1201.1	1064.7	1	1200	1631.4	0	0	0
5	Strydom ,G (Graceson)	4	3	212.5	2	1	0	2	2	425	0	0	0
5	Strydom ,G (Graceson)	4	1110.9	1323.4	2	1087.3	1110.9	2	1141.4	1535.9	0	0	0
6	Madibana ,M (Mohau)	3	3	425	3	3	425	0	0	0	0	0	0
6	Madibana ,M (Mohau)	3	991	1416	3	982.3	1416	0	0	0	0	0	0
7	Botes ,M (Michael Prinsloo)	3	2	141.7	2	1	0	1	1	425	0	0	0
7	Botes ,M (Michael Prinsloo)	3	1127.4	1269.1	2	1136.7	1127.4	1	1200	1552.4	0	0	0
8	Myburgh ,A (Alex)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
8	Myburgh ,A (Alex)	3	1325.4	1183.7	2	1326.6	900.4	1	1200.7	1750.4	0	0	0
9	Mncgwango ,S (Siseko N)	2	2	425	2	2	425	0	0	0	0	0	0
9	Mncgwango ,S (Siseko N)	2	1200	1625	2	1200	1625	0	0	0	0	0	0
10	Kruger ,B (Barend)	2	1	0	2	1	0	0	0	0	0	0	0
10	Kruger ,B (Barend)	2	1243.6	1243.6	2	1214.6	1243.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Bosman, N (Nathan Dean)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms