Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosman, L (Louis Willem)

Chess SA id

1100096158

FIDE id

Date of birth

2010-12-09 (U16)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-01-28

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1392.5	1363.4	1329.2	1200
Raw rating	1392.5	1363.4	1329.2	1200
Weighted rating	1392.5	1363.4	1329.2	1200
Weighted performance	849.1	780.4	770.1	0
Floor	892.5	863.4	829.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	126	131.4	137.9	165.8
Highest rating	1392.5 2024-02-01	1371.5 2022-05-01	1329.2 2024-02-01	1200 2018-10-01
Highest raw rating	1392.5 2024-02-01	1363.4 2024-02-01	1329.2 2024-02-01	1200 2024-02-01
Highest weighted rating	1392.5 2025-02-01	1363.4 2024-05-01	1329.2 2025-02-01	1200 2018-10-01
Highest weighted performance	1375.9 2020-02-01	1371.5 2022-05-01	1293.5 2020-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1392.5	1363.4	1329.2	1200
Analysis
Rating	1392.5	1363.4	1329.2	1200
Raw rating	1392.5	1363.4	1329.2	1200
Weighted rating	1392.5	1363.4	1329.2
Weighted performance	849.1	780.4	770.1
K-factor	36	36	36	36
Floor	892.5	863.4	829.2	700
Max/Min rating change allowed	126	131.4	137.9	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	1392.5	1363.4	1329.2	1200
New weighted rating	1392.5	1363.4	1329.2	1200
New weighted performance	848.6	780	769.6	0
Temp new rating	1392.5	1363.4	1329.2	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1392.5	1363.4	1329.2	1200
New K-factor	36	36	36	36
New floor	892.5	863.4	829.2	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	6	0	6
	41	30	11
	5	0	5
History	192	134	58

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	192	107.5	55.99	50.9	1206.4	1257.3
Standard	134	71.5	53.36	28.5	1212.2	1240.8
Rapid	58	36	62.07	102.6	1193.1	1295.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1392.5	1363.4	1329.2	1200
2025-09-01	1392.5	1363.4	1329.2	1200
2025-08-01	1392.5	1363.4	1329.2	1200
2025-07-01	1392.5	1363.4	1329.2	1200
2025-06-01	1392.5	1363.4	1329.2	1200
2025-05-01	1392.5	1363.4	1329.2	1200
2025-04-01	1392.5	1363.4	1329.2	1200
2025-03-01	1392.5	1363.4	1329.2	1200
2025-02-01	1392.5	1363.4	1329.2	1200
2025-01-01	1392.5	1363.4	1329.2	1200
2024-12-01	1392.5	1363.4	1329.2	1200
2024-11-01	1392.5	1363.4	1329.2	1200
2024-10-01	1392.5	1363.4	1329.2	1200
2024-09-01	1392.5	1363.4	1329.2	1200
2024-08-01	1392.5	1363.4	1329.2	1200
2024-07-01	1392.5	1363.4	1329.2	1200
2024-06-01	1392.5	1363.4	1329.2	1200
2024-08-01	1392.5	1363.4	1329.2	1200
2024-04-01	1392.5	1363.4	1329.2	1200
2024-03-01	1392.5	1363.4	1329.2	1200
2024-02-01	1392.5	1363.4	1329.2	1200
2024-01-01	1392.5	1363.4	1329.2	1200
2023-12-01	1392.5	1363.4	1329.2	1200
2023-11-01	1392.5	1363.4	1329.2	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	Cape of Good Hope Open 2023 (U14)	2023-01-28	2023-01-28	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
2	Western Cape Schools 2022 (U13 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	3.5	Yes	Analysis
3	OCF Open 2022 (U14)	2022-04-09	2022-04-09	Rapid	Overberg (WOS)	5	5	2	Yes	Analysis
4	Metro WP Schools Chess Trials 2022 (U13 Boys)	2022-04-22	2022-04-23	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
5	2022 East Dist Individuals (U13)	2022-03-12	2022-03-12	Rapid	Cape Town (WCT)	6	6	4	Yes	Analysis
6	Western Province Open 2022 (U14)	2022-02-26	2022-02-27	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
7	Kraaifontein Open 2022 (U12)	2022-01-08	2022-01-09	Standard	Cape Town (WCT)	6	6	2.5	Yes	Analysis
8	2022 Cape Of Good Hope Open (U14)	2022-01-29	2022-01-30	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
9	Western Cape Schools 2021 (U11 Boys)	2021-10-23	2021-10-23	Rapid	Overberg (WOS)	5	5	3.5	Yes	Analysis
10	2020 Metro Trials (U11 Boys)	2020-03-13	2020-03-14	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
11	OCF Chess Tournament 3 2020 (U12)	2020-03-07	2020-03-07	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
12	2020 Welgemoed Chess Challenge (U12)	2020-02-29	2020-02-29	Rapid	Cape Town (WCT)	5	5	4	Yes	Analysis
13	2020 Central District (U11)	2020-02-07	2020-02-08	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
14	OCF Chess Tournament 2 2020 (U12)	2020-02-01	2020-02-01	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
15	OCF Open 2020 (U8+U10)	2020-01-25	2020-01-25	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
16	2019 Wild Card Chess Championship (U10 Open)	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
17	2019 South African Junior Team Championships (U10B)	2020-01-08	2020-01-08	Standard	4 Knights (4K)	7	7	3	Yes	Analysis
18	The Manhattan Sweets & Super C National Chess Tournament 2019 (U9)	2019-09-06	2019-09-07	Standard	Cape Winelands (WCW)	5	5	3	Yes	Analysis
19	South African Schools Individuals Chess Championships 2019 (U11 Open)	2019-06-18	2019-06-21	Standard	Frances Baard (NCF)	7	7	3	Yes	Analysis
20	Western Cape Schools Individuals 2019 (U9 Boys)	2019-05-18	2019-05-19	Standard	Eden (WEG)	6	6	4	Yes	Analysis
21	Steinitz Chess Festival 2019 (C)	2019-04-05	2019-04-07	Standard	Cape Town (WCT)	6	5	2	Yes	Analysis
22	Metro School Chess Closed Individual Trials 2019 (U7+U9 Boys)	2019-03-01	2019-03-02	Standard	Cape Town (WCT)	5	5	4	Yes	Analysis
23	2019 Central District Schools Trials (U9)	2019-02-01	2019-02-02	Standard	Cape Town (WCT)	5	5	4.5	Yes	Analysis
24	Cape of Good Hope Open 2019 (U10)	2019-01-25	2019-01-27	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis
25	South African Junior Team Championships 2018 (U10B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	3.5	Yes	Analysis
26	ACL Chess Festival 2018 (U10)	2018-10-07	2018-10-07	Rapid	Cape Town (WCT)	5	5	2.5	Yes	Analysis
27	Courtrai Young Masters 2018 (U8)	2018-10-27	2018-10-27	Rapid	Cape Winelands (WCW)	7	5	4	Yes	Analysis
28	Mossel Bay Open 2018 (C)	2018-09-29	2018-09-29	Rapid	Eden (WEG)	6	6	2.5	Yes	Analysis
29	2018 Swartland Open (B)	2018-09-14	2018-09-15	Standard	West Coast (WCU)	6	6	2.5	Yes	Analysis
30	Paul Roos Open Championship 2018 (C)	2018-09-22	2018-09-23	Standard	Cape Winelands (WCW)	6	6	1	Yes	Analysis
31	Stellenberg Youth Chess Champs 2018 (E)	2018-06-23	2018-06-23	Standard	Cape Town (WCT)	5	3	0.5	Yes	Analysis
32	Crossroads Open Chess Championship 2018 (Development)	2018-04-28	2018-04-28	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
33	2018 WP Schools Closed Trials (U9 Boys)	2018-03-09	2018-03-10	Standard	Cape Town (WCT)	5	4	1	Yes	Analysis
34	Welgemoed Chess Challenge 2018 (U10)	2018-02-24	2018-02-24	Rapid	Cape Town (WCT)	5	5	2.5	Yes	Analysis
35	2018 Central District Trials (U9)	2018-02-02	2018-02-03	Standard	Cape Town (WCT)	5	5	2.5	Yes	Analysis

#	Games	Start				End
1	7	Tournament Western Province Open 2022				Tournament 2022 East Dist Individuals
		date 2022-02-26	rnd 3	type Standard	result 1	date 2022-03-12	rnd 3	type Rapid	result 1
		Opponent Gwanzura, K (Kevin)				Opponent Sterley, L (Levi)
2	7	Tournament 2020 Welgemoed Chess Challenge				Tournament OCF Chess Tournament 3 2020
		date 2020-02-29	rnd 2	type Rapid	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Burt, J (Jordan)				Opponent Mbuli, A (Anelisa)
3	7	Tournament Cape of Good Hope Open 2019				Tournament 2019 Central District Schools Trials
		date 2019-01-26	rnd 4	type Rapid	result 1	date 2019-02-02	rnd 5	type Standard	result 1
		Opponent Frankel, I (Isaac)				Opponent Matthews, A (Aaron)

#	Games	Start				End
1	8	Tournament South African Junior Team Championships 2018				Tournament 2019 Central District Schools Trials
		date 2018-12-18	rnd 5	type Standard	result 1	date 2019-02-02	rnd 5	type Standard	result 1
		Opponent Van Dyk, SJ (Sarel Johannes)				Opponent Matthews, A (Aaron)
2	5	Tournament Western Province Open 2022				Tournament Metro WP Schools Chess Trials 2022
		date 2022-02-26	rnd 3	type Standard	result 1	date 2022-04-22	rnd 1	type Standard	result 1
		Opponent Gwanzura, K (Kevin)				Opponent Du Plessis, I (Ivan)
3	5	Tournament 2020 Central District				Tournament OCF Chess Tournament 3 2020
		date 2020-02-08	rnd 5	type Standard	result 0.5	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Chisholm, L (Liam Aldan)				Opponent Mbuli, A (Anelisa)

#	Games	Start				End
1	7	Tournament Western Cape Schools 2021				Tournament 2022 East Dist Individuals
		date 2021-10-23	rnd 2	type Rapid	result 1	date 2022-03-12	rnd 3	type Rapid	result 1
		Opponent Cloete, K (Kayden)				Opponent Sterley, L (Levi)
2	4	Tournament 2020 Welgemoed Chess Challenge				Tournament 2020 Welgemoed Chess Challenge
		date 2020-02-29	rnd 2	type Rapid	result 1	date 2020-02-29	rnd 5	type Rapid	result 1
		Opponent Burt, J (Jordan)				Opponent Lappeman, L (Liam)
3	4	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 2	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Kiessling, K (Kai)				Opponent Botha, C (Clarabelle)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Western Province Open 2022				Tournament 2022 East Dist Individuals
		date 2022-02-26	rnd 3	type Standard	result 1	date 2022-03-12	rnd 3	type Rapid	result 1
		Opponent Gwanzura, K (Kevin)				Opponent Sterley, L (Levi)
2	7	Tournament 2020 Welgemoed Chess Challenge				Tournament OCF Chess Tournament 3 2020
		date 2020-02-29	rnd 2	type Rapid	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Burt, J (Jordan)				Opponent Mbuli, A (Anelisa)
3	5	Tournament OCF Open 2020				Tournament OCF Chess Tournament 2 2020
		date 2020-01-25	rnd 2	type Rapid	result 1	date 2020-02-01	rnd 1	type Standard	result 1
		Opponent Kiessling, K (Kai)				Opponent Hendricks, L (Lakeisha)

#	Games	Start				End
1	5	Tournament Western Province Open 2022				Tournament Metro WP Schools Chess Trials 2022
		date 2022-02-26	rnd 3	type Standard	result 1	date 2022-04-22	rnd 1	type Standard	result 1
		Opponent Gwanzura, K (Kevin)				Opponent Du Plessis, I (Ivan)
2	4	Tournament 2020 Central District				Tournament OCF Chess Tournament 3 2020
		date 2020-02-08	rnd 6	type Standard	result 1	date 2020-03-07	rnd 3	type Standard	result 1
		Opponent Janse Van Rensburg, A (Arden)				Opponent Mbuli, A (Anelisa)
3	4	Tournament 2018 Central District Trials				Tournament Metro School Chess Closed Individual Trials 2019
		date 2018-02-03	rnd 5	type Standard	result 1	date 2018-03-02	rnd 3	type Standard	result 1
		Opponent Leo, C (Courtney)				Opponent Meyer, M (Matthew)

#	Games	Start				End
1	5	Tournament Western Cape Schools 2021				Tournament 2022 East Dist Individuals
		date 2021-10-23	rnd 4	type Rapid	result 1	date 2022-03-12	rnd 3	type Rapid	result 1
		Opponent Tsabola, B (Bright)				Opponent Sterley, L (Levi)
2	4	Tournament 2020 Welgemoed Chess Challenge				Tournament 2020 Welgemoed Chess Challenge
		date 2020-02-29	rnd 2	type Rapid	result 1	date 2020-02-29	rnd 5	type Rapid	result 1
		Opponent Burt, J (Jordan)				Opponent Lappeman, L (Liam)
3	4	Tournament OCF Open 2020				Tournament OCF Open 2020
		date 2020-01-25	rnd 2	type Rapid	result 1	date 2020-01-25	rnd 5	type Rapid	result 1
		Opponent Kiessling, K (Kai)				Opponent Botha, C (Clarabelle)

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	Meyer ,M (Matthew)	6	2	-141.7	4	2	0	2	0	-425	0	0	0
1	Meyer ,M (Matthew)	6	1275.4	1133.7	4	1172.6	1275.4	2	1389.6	850.4	0	0	0
2	Shapiro ,M (Matthew)	6	2.5	-70.8	3	0.5	-283.3	3	2	141.7	0	0	0
2	Shapiro ,M (Matthew)	6	1267.1	1196.2	3	1307.5	983.7	3	1194.9	1408.7	0	0	0
3	Bosman ,P (Petrus)	5	0	-425	4	0	-425	1	0	-425	0	0	0
3	Bosman ,P (Petrus)	5	1241.5	816.5	4	1316	816.5	1	705.2	816.5	0	0	0
4	Mackenzie ,T (Tayden)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
4	Mackenzie ,T (Tayden)	3	1342.4	1200.7	3	1338.4	1200.7	0	0	0	0	0	0
5	Cockin ,R (Ruan)	3	3	425	2	2	425	1	1	425	0	0	0
5	Cockin ,R (Ruan)	3	1266.4	1691.4	2	1180.6	1691.4	1	1388	1691.4	0	0	0
6	Mcquire ,M (Mikael)	3	2	141.7	2	1	0	1	1	425	0	0	0
6	Mcquire ,M (Mikael)	3	1002.8	1144.4	2	975.1	1002.8	1	500	1427.8	0	0	0
7	De Villiers ,L (Lienka)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	De Villiers ,L (Lienka)	2	1121.8	1334.3	2	1128.5	1334.3	0	0	0	0	0	0
8	Neutt ,E (Ezra)	2	1	0	2	1	0	0	0	0	0	0	0
8	Neutt ,E (Ezra)	2	1198.4	1198.4	2	1200.6	1198.4	0	0	0	0	0	0
9	Odendaal ,L (Ludwig)	2	1	0	2	1	0	0	0	0	0	0	0
9	Odendaal ,L (Ludwig)	2	1394.9	1394.9	2	1391.4	1394.9	0	0	0	0	0	0
10	Mairosi ,D (Dylan)	2	2	425	2	2	425	0	0	0	0	0	0
10	Mairosi ,D (Dylan)	2	1182.6	1607.6	2	1170.8	1607.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Bosman, L (Louis Willem)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms