Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bruwer, JO (Jacobus Otto)

Chess SA id

108064020

FIDE id

Date of birth

2008-08-01 (U18)

Gender

Male

Region

Dr Kenneth Kaunda (NWP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-02-01

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1276.9	1279.4	931.4	906.2
Raw rating	1276.9	1279.4	931.4	906.2
Weighted rating	1276.9	1279.4	931.3	905.9
Weighted performance	335.7	333.9	0	0
Floor	848.8	868	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	148.6	148.1	243.1	252
Highest rating	1365.7 2019-09-01	1382.4 2019-09-01	1306.5 2018-05-01	1200 2024-11-01
Highest raw rating	1348.8 2020-01-01	1368 2020-01-01	986 2018-06-01	906.2 2024-02-01
Highest weighted rating	1348.8 2021-02-01	1368 2020-12-01	986 2024-11-01	906.2 2024-11-01
Highest weighted performance	1365.7 2019-09-01	1382.4 2019-09-01	1306.5 2018-05-01	1200 2024-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1276.9	1279.4	931.4	906.2
Analysis
Rating	1276.9	1279.4	931.4	906.2
Raw rating	1276.9	1279.4	931.4	906.2
Weighted rating	1276.9	1279.4	931.3
Weighted performance	335.7	333.9	0
K-factor	36	36	40	40
Floor	848.8	868	500	500
Max/Min rating change allowed	148.6	148.1	243.1	252
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	1276.9	1279.4	931.4	906.2
New weighted rating	1276.9	1279.4	931.4	906.1
New weighted performance	335.2	333.5	0	0
Temp new rating	1276.9	1279.4	931.4	906.2
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1276.9	1279.4	931.4	906.2
New K-factor	36	36	40	40
New floor	848.8	868	500	500

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	277	248	15	14

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Dr Kenneth Kaunda (NWP)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	116	70	60.34	87.9	1085	1172.9
Standard	92	56	60.87	92.4	1106.3	1198.7
Rapid	10	6	60	85	1055.8	1140.8
Blitz	14	8	57.14	60.7	965.8	1026.5

Date	Main	Standard	Rapid	Blitz
2025-09-30	1276.9	1279.4	931.4	906.2
2025-09-01	1276.9	1279.4	931.4	906.2
2025-08-01	1276.9	1279.4	931.4	906.2
2025-07-01	1276.9	1279.4	931.4	906.2
2025-06-01	1276.9	1279.4	931.4	906.2
2025-05-01	1276.9	1279.4	931.4	906.2
2025-04-01	1276.9	1279.4	931.4	906.2
2025-03-01	1276.9	1279.4	931.4	906.2
2025-02-01	1276.9	1279.4	931.4	906.2
2025-01-01	1276.9	1279.4	931.4	906.2
2024-12-01	1276.9	1279.4	931.4	906.2
2024-11-01	1276.9	1279.4	931.4	906.2
2024-10-01	1276.9	1279.4	931.4	906.2
2024-09-01	1276.9	1279.4	931.4	906.2
2024-08-01	1276.9	1279.4	931.4	906.2
2024-07-01	1276.9	1279.4	931.4	906.2
2024-06-01	1276.9	1279.4	931.4	906.2
2024-08-01	1276.9	1279.4	931.4	906.2
2024-04-01	1276.9	1279.4	931.4	906.2
2024-03-01	1276.9	1279.4	931.4	906.2
2024-02-01	1276.9	1279.4	931.4	906.2
2024-01-01	1276.9	1279.4	931.4	906.2
2023-12-01	1276.9	1279.4	924.4	871.2
2023-11-01	1276.9	1279.4	924.4	871.2

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	Gimnasium 2020 (U14)	2020-02-01	2020-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
2	2019 South African Junior Team Championships (U12A)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	1	Yes	Analysis
3	ChessExcellence September Holiday Tournament 2019	2019-09-30	2019-09-30	Standard	Chess Excellence (CEX)	5	5	3.5	Yes	Analysis
4	Proewe 2019 (U12)	2019-08-03	2019-08-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	3.5	Yes	Analysis
5	Doringkruin 2019 (U12)	2019-06-08	2019-06-08	Standard	Dr Kenneth Kaunda (NWP)	5	5	4.5	Yes	Analysis
6	2019 Super 12 Laerskole (Seniors)	2019-05-04	2019-05-04	Rapid	Tshwane (GTP)	5	5	1	Yes	Analysis
7	Volkies 2019 (B)	2019-05-11	2019-05-11	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
8	Volkskool 2019 (U12)	2019-02-02	2019-02-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
9	2018 Tshwane Inter Region (U14B)	2018-12-01	2018-12-01	Standard	Cape Town (WCT)	5	5	1	Yes	Analysis
10	South African Junior Blitz 2018 (U12)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	7	3.5	Yes	Analysis
11	South African Junior Team Championships 2018 (U12B)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	5.5	Yes	Analysis
12	Driefontein Proewe 2018 (O12 Seuns)	2018-07-28	2018-07-28	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
13	Strathvaal 2018 (U12)	2018-06-02	2018-06-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
14	2018 Super 12 (Junior)	2018-05-05	2018-05-05	Rapid	Tshwane (GTP)	5	5	5	Yes	Analysis
15	Volkies 2018 (U12)	2018-05-12	2018-05-12	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
16	2018 South African Junior Closed Chess Championships (U10 Open)	2018-04-01	2018-04-07	Standard	Chess South Africa (CSA)	11	11	5	Yes	Analysis
17	Wesvalia 2018 (U12)	2018-02-17	2018-02-17	Standard	Dr Kenneth Kaunda (NWP)	5	5	4.5	Yes	Analysis
18	Laerskool Volkskool 2018 (C)	2018-02-03	2018-02-03	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
19	South African Junior Blitz 2017 Championships (B)	2018-01-07	2018-01-07	Blitz	4 Knights (4K)	7	7	4.5	Yes	Analysis
20	South African Junior Team Championships 2017 (U10A)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	4	Yes	Analysis

#	Games	Start				End
1	11	Tournament Volkies 2019				Tournament Proewe 2019
		date 2019-05-11	rnd 3	type Standard	result 1	date 2019-08-03	rnd 3	type Standard	result 1
		Opponent James, S (Sebenzile)				Opponent Van Straaten, P (Petrus)
2	9	Tournament 2018 Super 12				Tournament Volkies 2018
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-12	rnd 4	type Standard	result 1
		Opponent Van Straaten, P (Petrus)				Opponent Muller, C (Christiaan)
3	7	Tournament South African Junior Team Championships 2018				Tournament South African Junior Blitz 2018
		date 2018-12-16	rnd 1	type Standard	result 1	date 2018-12-19	rnd 1	type Blitz	result 1
		Opponent Van Kradenburg, A (Antonio)				Opponent Singh, A (Arnaav)

#	Games	Start				End
1	11	Tournament Volkies 2019				Tournament Proewe 2019
		date 2019-05-11	rnd 3	type Standard	result 1	date 2019-08-03	rnd 3	type Standard	result 1
		Opponent James, S (Sebenzile)				Opponent Van Straaten, P (Petrus)
2	10	Tournament South African Junior Team Championships 2018				Tournament Volkskool 2019
		date 2018-12-16	rnd 1	type Standard	result 1	date 2019-02-02	rnd 3	type Standard	result 1
		Opponent Van Kradenburg, A (Antonio)				Opponent Monchosi, A (Atlegang)
3	6	Tournament Wesvalia 2018				Tournament 2018 South African Junior Closed Chess Championships
		date 2018-02-17	rnd 1	type Standard	result 1	date 2018-04-01	rnd 1	type Standard	result 1
		Opponent Fernandes, A (Alanzo)				Opponent Gibbens, JG (Johannes)

#	Games	Start				End
1	5	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 5	type Rapid	result 1
		Opponent Van Straaten, P (Petrus)				Opponent De Necker, J (Janrich)
2	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 2	type Rapid	result 1	date 2019-05-04	rnd 2	type Rapid	result 1
		Opponent Schultz, R (Ryno)				Opponent Schultz, R (Ryno)

#	Games	Start				End
1	4	Tournament South African Junior Blitz 2017 Championships				Tournament South African Junior Blitz 2018
		date 2018-01-07	rnd 5	type Blitz	result 1	date 2018-12-19	rnd 1	type Blitz	result 1
		Opponent Molele, R (Rorisang)				Opponent Singh, A (Arnaav)
2	2	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 5	type Blitz	result 1	date 2018-12-19	rnd 6	type Blitz	result 0.5
		Opponent Croeser, E (Enzo)				Opponent Copley, H (Hugh)
3	2	Tournament South African Junior Blitz 2017 Championships				Tournament South African Junior Blitz 2017 Championships
		date 2018-01-07	rnd 1	type Blitz	result 1	date 2018-01-07	rnd 2	type Blitz	result 1
		Opponent Du Preez, E (Estiaan)				Opponent Moolman, R (Reinhardt)

#	Games	Start				End
1	7	Tournament Volkies 2019				Tournament Doringkruin 2019
		date 2019-05-11	rnd 3	type Standard	result 1	date 2019-06-08	rnd 4	type Standard	result 1
		Opponent James, S (Sebenzile)				Opponent Seabelo, O (Onkarabetse)
2	6	Tournament 2018 Super 12				Tournament Volkies 2018
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-12	rnd 1	type Standard	result 1
		Opponent Van Straaten, P (Petrus)				Opponent Cordier, T (Tristian)
3	4	Tournament Driefontein Proewe 2018				Tournament Driefontein Proewe 2018
		date 2018-07-28	rnd 1	type Standard	result 1	date 2018-07-28	rnd 4	type Standard	result 1
		Opponent Cordier, T (Tristian)				Opponent Van Der Westhuizen, F (Frederik)

#	Games	Start				End
1	7	Tournament Volkies 2019				Tournament Doringkruin 2019
		date 2019-05-11	rnd 3	type Standard	result 1	date 2019-06-08	rnd 4	type Standard	result 1
		Opponent James, S (Sebenzile)				Opponent Seabelo, O (Onkarabetse)
2	4	Tournament Driefontein Proewe 2018				Tournament Driefontein Proewe 2018
		date 2018-07-28	rnd 1	type Standard	result 1	date 2018-07-28	rnd 4	type Standard	result 1
		Opponent Cordier, T (Tristian)				Opponent Van Der Westhuizen, F (Frederik)
3	4	Tournament Strathvaal 2018				Tournament Strathvaal 2018
		date 2018-06-02	rnd 1	type Standard	result 1	date 2018-06-02	rnd 4	type Standard	result 1
		Opponent Coertze, D (Donovon)				Opponent Monchosi, A (Atlegang)

#	Games	Start				End
1	5	Tournament 2018 Super 12				Tournament 2018 Super 12
		date 2018-05-05	rnd 1	type Rapid	result 1	date 2018-05-05	rnd 5	type Rapid	result 1
		Opponent Van Straaten, P (Petrus)				Opponent De Necker, J (Janrich)
2	1	Tournament 2019 Super 12 Laerskole				Tournament 2019 Super 12 Laerskole
		date 2019-05-04	rnd 2	type Rapid	result 1	date 2019-05-04	rnd 2	type Rapid	result 1
		Opponent Schultz, R (Ryno)				Opponent Schultz, R (Ryno)

#	Games	Start				End
1	2	Tournament South African Junior Blitz 2017 Championships				Tournament South African Junior Blitz 2018
		date 2018-01-07	rnd 7	type Blitz	result 1	date 2018-12-19	rnd 1	type Blitz	result 1
		Opponent Ramlall, S (Sanjana)				Opponent Singh, A (Arnaav)
2	2	Tournament South African Junior Blitz 2017 Championships				Tournament South African Junior Blitz 2017 Championships
		date 2018-01-07	rnd 1	type Blitz	result 1	date 2018-01-07	rnd 2	type Blitz	result 1
		Opponent Du Preez, E (Estiaan)				Opponent Moolman, R (Reinhardt)
3	1	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 5	type Blitz	result 1	date 2018-12-19	rnd 5	type Blitz	result 1
		Opponent Croeser, E (Enzo)				Opponent Croeser, E (Enzo)

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	Fourie ,Q (Quewen)	4	2.5	106.2	4	2.5	106.2	0	0	0	0	0	0
1	Fourie ,Q (Quewen)	4	1142.2	1248.5	4	1136.6	1248.5	0	0	0	0	0	0
2	Cordier ,T (Tristian)	3	3	425	3	3	425	0	0	0	0	0	0
2	Cordier ,T (Tristian)	3	919.6	1344.6	3	917.4	1344.6	0	0	0	0	0	0
3	Hattingh ,JH (Johannes)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
3	Hattingh ,JH (Johannes)	3	1222.9	939.6	3	1221.3	939.6	0	0	0	0	0	0
4	Van Straaten ,P (Petrus)	3	3	425	2	2	425	1	1	425	0	0	0
4	Van Straaten ,P (Petrus)	3	1217.4	1642.4	2	1191.8	1642.4	1	766	1642.4	0	0	0
5	Sopanam Prabha ,A (Arjun)	3	0	-425	2	0	-425	0	0	0	1	0	-425
5	Sopanam Prabha ,A (Arjun)	3	1238.4	813.4	2	1208.6	813.4	0	0	0	1	973.8	813.4
6	Michaels ,E (Enrico)	2	2	425	2	2	425	0	0	0	0	0	0
6	Michaels ,E (Enrico)	2	884	1309.1	2	886.3	1309.1	0	0	0	0	0	0
7	Ziegenhagen ,V (Vian Luke)	2	2	425	2	2	425	0	0	0	0	0	0
7	Ziegenhagen ,V (Vian Luke)	2	924.3	1349.3	2	929.4	1349.3	0	0	0	0	0	0
8	Monchosi ,A (Atlegang)	2	2	425	2	2	425	0	0	0	0	0	0
8	Monchosi ,A (Atlegang)	2	999.5	1424.6	2	1000.4	1424.6	0	0	0	0	0	0
9	Aslett ,J (Juan-Naude)	2	1	0	2	1	0	0	0	0	0	0	0
9	Aslett ,J (Juan-Naude)	2	1028.2	1028.2	2	1025.5	1028.2	0	0	0	0	0	0
10	Van Der Westhuizen ,F (Frederik)	2	1	0	2	1	0	0	0	0	0	0	0
10	Van Der Westhuizen ,F (Frederik)	2	1196.9	1196.9	2	1193.1	1196.9	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

Bruwer, JO (Jacobus Otto)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms