Chess South Africa Ratings Database

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Personal

Bosch, A (Altus)

Chess SA id

106066851

FIDE id

Date of birth

2006-03-07 (U20)

Gender

Male

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-22

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1408	1402.6	1279	1133.9
Raw rating	1408	1402.6	1279	1133.9
Weighted rating	1408	1402.6	1279	1133.9
Weighted performance	406.5	405.6	111.1	135.4
Floor	919.7	915.7	779	671.1
K-factor	32	32	36	40
Min/Max rating change allowed	123.3	124.2	148.2	182.2
Highest rating	1419.7 2020-02-01	1415.7 2020-02-01	1425.1 2018-05-01	1200 2024-11-01
Highest raw rating	1419.7 2020-02-01	1415.7 2020-02-01	1279 2024-02-01	1171.1 2019-12-01
Highest weighted rating	1419.7 2022-01-01	1415.7 2022-01-01	1279 2025-02-01	1171.1 2024-11-01
Highest weighted performance	1413 2019-01-01	1396.8 2019-01-01	1425.1 2018-05-01	1200 2024-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1408	1402.6	1279	1133.9
Analysis
Rating	1408	1402.6	1279	1133.9
Raw rating	1408	1402.6	1279	1133.9
Weighted rating	1408	1402.6	1279
Weighted performance	406.5	405.6	111.1
K-factor	32	32	36	40
Floor	919.7	915.7	779	671.1
Max/Min rating change allowed	123.3	124.2	148.2	182.2
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	1408	1402.6	1279	1133.9
New weighted rating	1408	1402.6	1279	1133.9
New weighted performance	406.1	405.1	110.6	135
Temp new rating	1408	1402.6	1279	1133.9
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1408	1402.6	1279	1133.9
New K-factor	32	32	36	40
New floor	919.7	915.7	779	671.1

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	376	303	33	40

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Mangaung (FMB)
Province	Free State (FS)
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	252	167.5	66.47	140	1139.7	1279.7
Standard	194	127.5	65.72	133.6	1133.6	1267.2
Rapid	23	19	82.61	277.2	1158.1	1435.2
Blitz	35	21	60	85	1161.6	1246.6

Date	Main	Standard	Rapid	Blitz
2025-09-30	1408	1402.6	1279	1133.9
2025-09-01	1408	1402.6	1279	1133.9
2025-08-01	1408	1402.6	1279	1133.9
2025-07-01	1408	1402.6	1279	1133.9
2025-06-01	1408	1402.6	1279	1133.9
2025-05-01	1408	1402.6	1279	1133.9
2025-04-01	1408	1402.6	1279	1133.9
2025-03-01	1408	1402.6	1279	1133.9
2025-02-01	1408	1402.6	1279	1133.9
2025-01-01	1408	1402.6	1279	1133.9
2024-12-01	1408	1402.6	1279	1133.9
2024-11-01	1408	1402.6	1279	1133.9
2024-10-01	1408	1402.6	1279	1133.9
2024-09-01	1408	1402.6	1279	1133.9
2024-08-01	1408	1402.6	1279	1133.9
2024-07-01	1408	1402.6	1279	1133.9
2024-06-01	1408	1402.6	1279	1133.9
2024-08-01	1408	1402.6	1279	1133.9
2024-04-01	1408	1402.6	1279	1133.9
2024-03-01	1408	1402.6	1279	1133.9
2024-02-01	1408	1402.6	1279	1133.9
2024-01-01	1408	1402.6	1279	1133.9
2023-12-01	1408	1402.6	1279	1133.9
2023-11-01	1408	1402.6	1279	1133.9

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	Morris Club Tournament 2020	2020-02-15	2020-02-15	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
2	Mangaung Metro Chess February 2020 (A)	2020-02-21	2020-02-22	Standard	Mangaung (FMB)	5	5	2.5	Yes	Analysis
3	2019 South African Juior Blitz Championship (B)	2020-01-05	2020-01-05	Blitz	4 Knights (4K)	7	3	1	Yes	Analysis
4	2019 Wild Card Chess Championship (U14 Open)	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
5	2019 South African Junior Team Championships (U14B)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	6	Yes	Analysis
6	Mangaung Metro Chess October 2019 (A)	2019-10-11	2019-10-12	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
7	Mangaung Metro Chess 16-17 August 2019 (A+B)	2019-08-16	2019-08-17	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
8	Mangaung Metro July Trials 2019 (U14)	2019-07-19	2019-07-20	Standard	Mangaung (FMB)	5	5	4.5	Yes	Analysis
9	Inter Regional Chess Championship 2019 (U14)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
10	Mangaung Metro Chess 12 to 13 April 2019 (A)	2019-04-12	2019-04-13	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
11	2019 South African Junior Closed Chess Championship (U14 Open)	2019-03-17	2019-03-22	Standard	Chess South Africa (CSA)	9	8	1.5	Yes	Analysis
12	Mangaung Metro Chess 1-2 February 2019 (A)	2019-02-01	2019-02-02	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
13	Mangaung Metro Chess 18-19 January 2019 (A)	2019-01-18	2019-01-19	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
14	South African Junior Blitz 2018 (U14)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	6	4	Yes	Analysis
15	2018 Wild Card Chess Championships (U14 Open)	2018-12-21	2018-12-24	Standard	4 Knights (4K)	7	7	6	Yes	Analysis
16	South African Junior Team Championships 2018 (U14B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
17	Mangaung Metro Chess12 & 13 October 2018 (B)	2018-10-12	2018-10-13	Standard	Mangaung (FMB)	5	5	3.5	Yes	Analysis
18	King`s Guard Women`s Day Open Chess Tournament 2018 (A)	2018-08-04	2018-08-04	Standard	ZF Mgcawu (NZF)	5	5	5	Yes	Analysis
19	Free State Open 2018 (B)	2018-08-17	2018-08-18	Standard	Mangaung (FMB)	6	6	4	Yes	Analysis
20	ZF MGCAWU Mandela Centenary Open Chess Tournament 2018 (U18)	2018-07-20	2018-07-21	Standard	ZF Mgcawu (NZF)	6	6	5.5	Yes	Analysis
21	South African Open 2018 (B)	2018-07-07	2018-07-14	Standard	Mangaung (FMB)	11	11	5	Yes	Analysis
22	South African Open 2018 (Blitz)	2018-07-11	2018-07-11	Blitz	Mangaung (FMB)	9	9	3.5	Yes	Analysis
23	Mangaung Metro Chess 27-28 July 2018 (B)	2018-07-27	2018-07-28	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
24	King's Guard Chess Club DCS Rapid Tournament 2018	2018-06-30	2018-06-30	Rapid	ZF Mgcawu (NZF)	7	7	6	Yes	Analysis
25	King's Guard Chess Club Blitz III Tournament 2018	2018-06-24	2018-06-24	Blitz	ZF Mgcawu (NZF)	5	5	5	Yes	Analysis
26	King's Guard Chess Club Blitz II Tournament 2018	2018-06-23	2018-06-23	Rapid	ZF Mgcawu (NZF)	5	5	5	Yes	Analysis
27	King`s Guard Chess Club Blitz I Tournament 2018	2018-06-22	2018-06-22	Blitz	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
28	Mangaung Metro Chess 1-2 June 2018 (C)	2018-06-01	2018-06-02	Standard	Mangaung (FMB)	5	5	4.5	Yes	Analysis
29	King`s Guard DCS Chess Club Rapid 2018	2018-05-19	2018-05-19	Rapid	ZF Mgcawu (NZF)	6	6	5	Yes	Analysis
30	Inter Regional 2018 (U14 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
31	ZF Mgcawu Qualifier (2)	2018-04-21	2018-04-21	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
32	2018 South African Junior Closed Chess Championships (U12 Open)	2018-04-01	2018-04-07	Standard	Chess South Africa (CSA)	11	11	2.5	Yes	Analysis
33	ZF Mgcawu Schools District Open Chess Tournament 2018 (U18 Boys)	2018-03-17	2018-03-17	Standard	ZF Mgcawu (NZF)	5	5	3	Yes	Analysis
34	ZF Mgcawu Inter-Region Open Trials (Qualifier 2)	2018-03-24	2018-03-24	Standard	ZF Mgcawu (NZF)	5	5	5	Yes	Analysis
35	Human Rights Day Rapid Tournament 2018	2018-03-21	2018-03-21	Rapid	ZF Mgcawu (NZF)	5	5	3	Yes	Analysis
36	Mangaung Metro Chess 9 - 10 March 2018 (B)	2018-03-09	2018-03-10	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
37	ZF Mgcawu Qualifier Open Chess Tournament 2018 (A)	2018-02-17	2018-02-17	Standard	ZF Mgcawu (NZF)	5	5	4	Yes	Analysis
38	Pixley ka Seme Open 2018 (U14)	2018-02-10	2018-02-10	Standard	Pixley-ka-Seme (NCP)	5	5	5	Yes	Analysis
39	Mangaung Metro Chess 2 & 3 February 2018 (C)	2018-02-02	2018-02-03	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
40	Mangaung Metro Chess 19 & 20 January 2018 (C)	2018-01-19	2018-01-20	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
41	South African Junior Blitz 2017 Championships (B)	2018-01-07	2018-01-07	Blitz	4 Knights (4K)	7	7	3.5	Yes	Analysis
42	South African Junior Wildcard Championships 2017 (U12 Open)	2018-01-09	2018-01-12	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
43	South African Junior Team Championships 2017 (U12C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	7	Yes	Analysis

#	Games	Start				End
1	18	Tournament Inter Regional 2018				Tournament King`s Guard Chess Club Blitz I Tournament 2018
		date 2018-05-05	rnd 3	type Standard	result 1	date 2018-06-22	rnd 4	type Blitz	result 1
		Opponent Coetsee, JE (Johan)				Opponent Basson, A (Abigail)
2	13	Tournament King's Guard Chess Club Blitz II Tournament 2018				Tournament King's Guard Chess Club DCS Rapid Tournament 2018
		date 2018-06-23	rnd 1	type Rapid	result 1	date 2018-06-30	rnd 3	type Rapid	result 1
		Opponent West, W (William)				Opponent Noah, D (Dawid)
3	9	Tournament Mangaung Metro Chess12 & 13 October 2018				Tournament South African Junior Blitz 2018
		date 2018-10-13	rnd 4	type Standard	result 0.5	date 2018-12-19	rnd 2	type Blitz	result 1
		Opponent Buchner, E (Eduard)				Opponent Du Plessis, M (Marete)

#	Games	Start				End
1	10	Tournament Mangaung Metro Chess October 2019				Tournament 2019 Wild Card Chess Championship
		date 2019-10-12	rnd 4	type Standard	result 1	date 2020-01-09	rnd 1	type Standard	result 1
		Opponent Steenkamp, F (Fransien)				Opponent Mcquire, C (Craig)
2	9	Tournament South African Junior Team Championships 2017				Tournament South African Junior Wildcard Championships 2017
		date 2018-01-04	rnd 1	type Standard	result 1	date 2018-01-09	rnd 2	type Standard	result 1
		Opponent Ferreira, F (Frederik)				Opponent Aldum, R (Rocco)
3	8	Tournament Mangaung Metro Chess12 & 13 October 2018				Tournament South African Junior Team Championships 2018
		date 2018-10-13	rnd 4	type Standard	result 0.5	date 2018-12-19	rnd 6	type Standard	result 1
		Opponent Buchner, E (Eduard)				Opponent Modiba, D (Ditshego)

#	Games	Start				End
1	16	Tournament Human Rights Day Rapid Tournament 2018				Tournament King's Guard Chess Club DCS Rapid Tournament 2018
		date 2018-03-21	rnd 4	type Rapid	result 1	date 2018-06-30	rnd 3	type Rapid	result 1
		Opponent Van Kradenburg, D (Donovan)				Opponent Noah, D (Dawid)
2	3	Tournament King's Guard Chess Club DCS Rapid Tournament 2018				Tournament King's Guard Chess Club DCS Rapid Tournament 2018
		date 2018-06-30	rnd 5	type Rapid	result 1	date 2018-06-30	rnd 7	type Rapid	result 1
		Opponent Slinger, J (Johan)				Opponent Van Kradenburg, D (Donovan)
3	1	Tournament Human Rights Day Rapid Tournament 2018				Tournament Human Rights Day Rapid Tournament 2018
		date 2018-03-21	rnd 1	type Rapid	result 1	date 2018-03-21	rnd 1	type Rapid	result 1
		Opponent Molehane, K (Kabelo)				Opponent Molehane, K (Kabelo)

#	Games	Start				End
1	5	Tournament King's Guard Chess Club Blitz III Tournament 2018				Tournament King's Guard Chess Club Blitz III Tournament 2018
		date 2018-06-24	rnd 1	type Blitz	result 1	date 2018-06-24	rnd 5	type Blitz	result 1
		Opponent Botha, L (Lika)				Opponent Botha, E (Emma)
2	4	Tournament King`s Guard Chess Club Blitz I Tournament 2018				Tournament King`s Guard Chess Club Blitz I Tournament 2018
		date 2018-06-22	rnd 1	type Blitz	result 1	date 2018-06-22	rnd 4	type Blitz	result 1
		Opponent West, W (William)				Opponent Basson, A (Abigail)
3	3	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 4	type Blitz	result 1	date 2018-12-19	rnd 6	type Blitz	result 1
		Opponent Millard, C (Charlotte)				Opponent Mnyasta, T (Tezihano)

#	Games	Start				End
1	13	Tournament King's Guard Chess Club Blitz II Tournament 2018				Tournament King's Guard Chess Club DCS Rapid Tournament 2018
		date 2018-06-23	rnd 1	type Rapid	result 1	date 2018-06-30	rnd 3	type Rapid	result 1
		Opponent West, W (William)				Opponent Noah, D (Dawid)
2	8	Tournament Mangaung Metro Chess 27-28 July 2018				Tournament Free State Open 2018
		date 2018-07-28	rnd 5	type Standard	result 1	date 2018-08-17	rnd 2	type Standard	result 1
		Opponent Moshoeshoe, M (Maletapata)				Opponent Makhetha, L (Laviens)
3	7	Tournament Human Rights Day Rapid Tournament 2018				Tournament ZF Mgcawu Inter-Region Open Trials
		date 2018-03-21	rnd 4	type Rapid	result 1	date 2018-03-24	rnd 5	type Standard	result 1
		Opponent Van Kradenburg, D (Donovan)				Opponent Rens, Q (Quirence)

#	Games	Start				End
1	9	Tournament South African Junior Team Championships 2017				Tournament South African Junior Wildcard Championships 2017
		date 2018-01-04	rnd 1	type Standard	result 1	date 2018-01-09	rnd 2	type Standard	result 1
		Opponent Ferreira, F (Frederik)				Opponent Aldum, R (Rocco)
2	8	Tournament Mangaung Metro Chess 27-28 July 2018				Tournament Free State Open 2018
		date 2018-07-28	rnd 5	type Standard	result 1	date 2018-08-17	rnd 2	type Standard	result 1
		Opponent Moshoeshoe, M (Maletapata)				Opponent Makhetha, L (Laviens)
3	6	Tournament South African Open 2018				Tournament ZF MGCAWU Mandela Centenary Open Chess Tournament 2018
		date 2018-07-14	rnd 11	type Standard	result 1	date 2018-07-21	rnd 5	type Standard	result 1
		Opponent Goliath, H (Hazel)				Opponent Botes, A (Armand)

#	Games	Start				End
1	8	Tournament King's Guard Chess Club Blitz II Tournament 2018				Tournament King's Guard Chess Club DCS Rapid Tournament 2018
		date 2018-06-23	rnd 1	type Rapid	result 1	date 2018-06-30	rnd 3	type Rapid	result 1
		Opponent West, W (William)				Opponent Noah, D (Dawid)
2	4	Tournament Human Rights Day Rapid Tournament 2018				Tournament King`s Guard DCS Chess Club Rapid 2018
		date 2018-03-21	rnd 4	type Rapid	result 1	date 2018-05-19	rnd 2	type Rapid	result 1
		Opponent Van Kradenburg, D (Donovan)				Opponent Motatinyane, B (Bonang)
3	3	Tournament King's Guard Chess Club DCS Rapid Tournament 2018				Tournament King's Guard Chess Club DCS Rapid Tournament 2018
		date 2018-06-30	rnd 5	type Rapid	result 1	date 2018-06-30	rnd 7	type Rapid	result 1
		Opponent Slinger, J (Johan)				Opponent Van Kradenburg, D (Donovan)

#	Games	Start				End
1	5	Tournament King's Guard Chess Club Blitz III Tournament 2018				Tournament King's Guard Chess Club Blitz III Tournament 2018
		date 2018-06-24	rnd 1	type Blitz	result 1	date 2018-06-24	rnd 5	type Blitz	result 1
		Opponent Botha, L (Lika)				Opponent Botha, E (Emma)
2	4	Tournament King`s Guard Chess Club Blitz I Tournament 2018				Tournament King`s Guard Chess Club Blitz I Tournament 2018
		date 2018-06-22	rnd 1	type Blitz	result 1	date 2018-06-22	rnd 4	type Blitz	result 1
		Opponent West, W (William)				Opponent Basson, A (Abigail)
3	3	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 4	type Blitz	result 1	date 2018-12-19	rnd 6	type Blitz	result 1
		Opponent Millard, C (Charlotte)				Opponent Mnyasta, T (Tezihano)

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	Van Rooyen ,H (Hanro)	6	2	-141.7	5	1.5	-170	0	0	0	1	0.5	0
1	Van Rooyen ,H (Hanro)	6	1216	1074.3	5	1219.7	1046	0	0	0	1	1033.8	1216
2	Botha ,E (Emma)	4	3.5	318.8	2	1.5	212.5	1	1	425	1	1	425
2	Botha ,E (Emma)	4	951.2	1269.9	2	873.3	1163.7	1	628.2	1376.2	1	628.2	1376.2
3	Lebenya ,MJ (Masilonyana Johannes)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Lebenya ,MJ (Masilonyana Johannes)	3	1407.8	982.8	3	1407.7	982.8	0	0	0	0	0	0
4	Botes ,D (Dion)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Botes ,D (Dion)	3	1100	1241.7	3	1100.9	1241.7	0	0	0	0	0	0
5	Govender ,L (Lesharn)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
5	Govender ,L (Lesharn)	3	1166.3	1024.6	3	1177.1	1024.6	0	0	0	0	0	0
6	Makhetha ,L (Laviens)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
6	Makhetha ,L (Laviens)	3	1268	1409.7	3	1275.8	1409.7	0	0	0	0	0	0
7	Marais ,NJ (Nicholas)	3	2	141.7	1	1	425	1	1	425	1	0	-425
7	Marais ,NJ (Nicholas)	3	1141	1282.7	1	1101.3	1566	1	1200	1566	1	1200	716
8	Molehane ,K (Kabelo)	3	1.5	0	0	0	0	3	1.5	0	0	0	0
8	Molehane ,K (Kabelo)	3	1219.3	1219.3	0	0	0	3	1235.7	1219.3	0	0	0
9	Nel ,J (Jan)	3	2	141.7	0	0	0	3	2	141.7	0	0	0
9	Nel ,J (Jan)	3	1216	1357.7	0	0	0	3	1227.8	1357.7	0	0	0
10	Botha ,L (Lika)	3	3	425	0	0	0	1	1	425	2	2	425
10	Botha ,L (Lika)	3	929.5	1354.5	0	0	0	1	719.6	1354.5	2	719.6	1354.5

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Bosch, A (Altus)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms