Chess South Africa Ratings Database

PLAYER PAGE

Personal

Nel, JB (Janko Bruwer)

Chess SA id

109075164

FIDE id

Date of birth

2009-04-18 (U18)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1221.3	1228.4	882.4	725.8
Raw rating	1218.6	1228.4	882.4	725.8
Weighted rating	1221.3	1228.4	826.2	725.8
Weighted performance	779.8	462.3	0	0
Floor	725.6	728.4	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	161.5	159.2	260.7	325.9
Highest rating	1225.6 2022-08-01	1228.4 2024-02-01	1200 2020-01-01	1200 2024-02-01
Highest raw rating	1225.6 2022-08-01	1228.4 2024-02-01	882.4 2025-09-01	725.8 2024-02-01
Highest weighted rating	1225.6 2024-07-01	1228.4 2025-02-01	815.2 2025-09-01	725.8 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2020-01-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-0.2	0	0	0
New rating	1221	1228.4	882.4	725.8
Analysis
Rating	1221.3	1228.4	882.4	725.8
Raw rating	1218.6	1228.4	882.4	725.8
Weighted rating	1221.3	1228.4	826.2
Weighted performance	779.8	462.3	0
K-factor	36	36	40	40
Floor	725.6	728.4	500	500
Max/Min rating change allowed	161.5	159.2	260.7	325.9
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	1218.6	1228.4	882.4	725.8
New weighted rating	1221	1228.4	831.3	725.8
New weighted performance	772.6	454.8	0	0
Temp new rating	1221	1228.4	882.4	725.8
Temp new rating +/-	-0.2	0	0	0
Final new rating +/-	-0.2	0	0	0
New rating	1221	1228.4	882.4	725.8
New K-factor	36	36	40	40
New floor	725.6	728.4	500	500

Item	Main	Standard	Rapid
	0	0	0
	5	0	5
	0	0	0
	0	0	0
	11	5	6
	0	0	0
History	174	163	11

Games since
	Main 5	Standard 0		Rapid 5		Blitz 0
Gender	Male
Age group	U18
Region	Bojanala Platina (NBR)
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	5	3	60	85	1058.2	1143.2
Standard	0	0	0	0	0	0
Rapid	5	3	60	85	1058.2	1143.2
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	102	64.5	63.24	112.5	981.3	1093.8
Standard	91	59	64.84	126.1	957.7	1083.8
Rapid	11	5.5	50	0	1176.1	1176.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1218.6	1228.4	882.4	725.8
2025-09-30	1218.6	1228.4	882.4	725.8
2025-09-01	1218.6	1228.4	882.4	725.8
2025-08-01	1222.1	1228.4	809.4	725.8
2025-07-01	1222.1	1228.4	809.4	725.8
2025-06-01	1222.1	1228.4	809.4	725.8
2025-05-01	1222.1	1228.4	809.4	725.8
2025-04-01	1222.1	1228.4	809.4	725.8
2025-03-01	1222.1	1228.4	809.4	725.8
2025-02-01	1222.1	1228.4	809.4	725.8
2025-01-01	1222.1	1228.4	809.4	725.8
2024-12-01	1222.1	1228.4	809.4	725.8
2024-11-01	1222.1	1228.4	809.4	725.8
2024-10-01	1222.1	1228.4	809.4	725.8
2024-09-01	1222.1	1228.4	809.4	725.8
2024-08-01	1222.1	1228.4	809.4	725.8
2024-07-01	1222.1	1228.4	809.4	725.8
2024-09-01	1222.1	1228.4	809.4	725.8
2024-05-01	1222.1	1228.4	809.4	725.8
2024-04-01	1222.1	1228.4	809.4	725.8
2024-03-01	1222.1	1228.4	809.4	725.8
2024-02-01	1222.1	1228.4	809.4	725.8
2024-01-01	1222.1	1228.4	809.4	725.8
2023-12-01	1222.1	1228.4	809.4	725.8

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	Bojanala's Clash Of Schools 2025 (High School B)	2025-08-02	2025-08-02	Rapid	Bojanala Platina (NBR)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Bojanala's Clash Of Schools 2025 (High School B)	2025-08-02	2025-08-02	Rapid	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
2	Super 8 Skaak 2022 (Seniors)	2022-10-14	2022-10-14	Rapid	Bojanala Platina (NBR)	7	6	2.5	Yes	Analysis
3	Bojanala Chess Federation Clash of Schools 2022 (PS Championship)	2022-07-22	2022-07-22	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
4	Laerskool Brits 2019 (U12)	2019-08-31	2019-08-31	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
5	Laerskool Olienpark 2019 (U12)	2019-04-06	2019-04-06	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
6	2019 South African Junior Closed Chess Championship (U10 Open)	2019-03-17	2019-03-22	Standard	Chess South Africa (CSA)	9	8	3	Yes	Analysis
7	Rustenburg Noord Primary Tournament 2019 (U12)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	4	3	Yes	Analysis
8	Laerskool Vastrap Tournament 2019 (B)	2019-02-23	2019-02-23	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
9	2018 Tshwane Inter Region (U10A)	2018-12-01	2018-12-01	Standard	Cape Town (WCT)	5	5	1	Yes	Analysis
10	South African Junior Team Championships 2018 (U10A)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
11	Lebone II Chess 2018 (U10)	2018-09-01	2018-09-01	Standard	Cape Town (WCT)	5	5	4.5	Yes	Analysis
12	Laerskool Brits Tournament 2018 (U10)	2018-08-04	2018-08-04	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
13	Inter Regional 2018 (U10 Team)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	2.5	Yes	Analysis
14	Laerskool Olienpark 2018 (U10)	2018-04-21	2018-04-21	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
15	Laerskool Rustenburg 2018 (D)	2018-03-24	2018-03-24	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
16	Hoerskool Brits 2018 (U10)	2018-03-17	2018-03-17	Standard	Bojanala Platina (NBR)	5	5	5	Yes	Analysis
17	Laerskool Vastrap 2018 (U10)	2018-02-03	2018-02-03	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
18	Laerskool Rustenburg Noord Primary 2018 (D)	2018-02-24	2018-02-24	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
19	South African Junior Team Championships 2017 (U10D)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	4	Yes	Analysis

#	Games	Start				End
1	10	Tournament Laerskool Brits Tournament 2018				Tournament Lebone II Chess 2018
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-09-01	rnd 5	type Standard	result 1
		Opponent Fouche, E (Estelle)				Opponent Mulder, SL (Stephanus)
2	8	Tournament Laerskool Brits 2019				Tournament Super 8 Skaak 2022
		date 2019-08-31	rnd 4	type Standard	result 1	date 2022-10-14	rnd 1	type Rapid	result 1
		Opponent Lin, S (Shixi)				Opponent Pasano, J (Juan)
3	8	Tournament Laerskool Rustenburg 2018				Tournament Inter Regional 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-05-04	rnd 2	type Standard	result 1
		Opponent Roos, H (Hannes)				Opponent Fourie, M (Marli)

#	Games	Start				End
1	10	Tournament Laerskool Brits Tournament 2018				Tournament Lebone II Chess 2018
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-09-01	rnd 5	type Standard	result 1
		Opponent Fouche, E (Estelle)				Opponent Mulder, SL (Stephanus)
2	8	Tournament Laerskool Rustenburg 2018				Tournament Inter Regional 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-05-04	rnd 2	type Standard	result 1
		Opponent Roos, H (Hannes)				Opponent Fourie, M (Marli)
3	8	Tournament Hoerskool Brits 2018				Tournament Laerskool Rustenburg 2018
		date 2018-03-17	rnd 1	type Standard	result 1	date 2018-03-24	rnd 3	type Standard	result 1
		Opponent Combrink, ZA (Zenadine)				Opponent Vosloo, T (Tiaan)

#	Games	Start				End
1	2	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 2	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Bosman, R (Rudi)				Opponent Dire, T (Tiiseto)
2	2	Tournament Super 8 Skaak 2022				Tournament Super 8 Skaak 2022
		date 2022-10-14	rnd 4	type Rapid	result 1	date 2022-10-14	rnd 5	type Rapid	result 0.5
		Opponent Kleingeld, Z (Zander)				Opponent Pieterse, EG (Erik Georg)
3	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Lochner, C (Christiaan)				Opponent Lochner, C (Christiaan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	8	Tournament Laerskool Brits 2019				Tournament Super 8 Skaak 2022
		date 2019-08-31	rnd 4	type Standard	result 1	date 2022-10-14	rnd 1	type Rapid	result 1
		Opponent Lin, S (Shixi)				Opponent Pasano, J (Juan)
2	8	Tournament Laerskool Brits Tournament 2018				Tournament Lebone II Chess 2018
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-09-01	rnd 3	type Standard	result 1
		Opponent Fouche, E (Estelle)				Opponent Letupu, L (Lemogang)
3	8	Tournament Laerskool Rustenburg 2018				Tournament Inter Regional 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-05-04	rnd 2	type Standard	result 1
		Opponent Roos, H (Hannes)				Opponent Fourie, M (Marli)

#	Games	Start				End
1	8	Tournament Laerskool Brits Tournament 2018				Tournament Lebone II Chess 2018
		date 2018-08-04	rnd 1	type Standard	result 1	date 2018-09-01	rnd 3	type Standard	result 1
		Opponent Fouche, E (Estelle)				Opponent Letupu, L (Lemogang)
2	8	Tournament Laerskool Rustenburg 2018				Tournament Inter Regional 2018
		date 2018-03-24	rnd 5	type Standard	result 1	date 2018-05-04	rnd 2	type Standard	result 1
		Opponent Roos, H (Hannes)				Opponent Fourie, M (Marli)
3	8	Tournament Hoerskool Brits 2018				Tournament Laerskool Rustenburg 2018
		date 2018-03-17	rnd 1	type Standard	result 1	date 2018-03-24	rnd 3	type Standard	result 1
		Opponent Combrink, ZA (Zenadine)				Opponent Vosloo, T (Tiaan)

#	Games	Start				End
1	2	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 2	type Rapid	result 1	date 2025-08-02	rnd 3	type Rapid	result 1
		Opponent Bosman, R (Rudi)				Opponent Dire, T (Tiiseto)
2	1	Tournament Bojanala's Clash Of Schools 2025				Tournament Bojanala's Clash Of Schools 2025
		date 2025-08-02	rnd 5	type Rapid	result 1	date 2025-08-02	rnd 5	type Rapid	result 1
		Opponent Lochner, C (Christiaan)				Opponent Lochner, C (Christiaan)
3	1	Tournament Super 8 Skaak 2022				Tournament Super 8 Skaak 2022
		date 2022-10-14	rnd 4	type Rapid	result 1	date 2022-10-14	rnd 4	type Rapid	result 1
		Opponent Kleingeld, Z (Zander)				Opponent Kleingeld, Z (Zander)

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	Mulder ,SL (Stephanus)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
1	Mulder ,SL (Stephanus)	4	904	1116.6	4	902.2	1116.6	0	0	0	0	0	0
2	Letupu ,L (Lemogang)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
2	Letupu ,L (Lemogang)	4	848.3	1060.8	4	839.3	1060.8	0	0	0	0	0	0
3	Byliefeldt ,L (Leroux)	3	1.5	0	3	1.5	0	0	0	0	0	0	0
3	Byliefeldt ,L (Leroux)	3	971.4	971.4	3	953.6	971.4	0	0	0	0	0	0
4	Van Staden ,J (Jakobus)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Van Staden ,J (Jakobus)	3	796.6	938.2	3	783.5	938.2	0	0	0	0	0	0
5	Vosloo ,T (Tiaan)	3	3	425	3	3	425	0	0	0	0	0	0
5	Vosloo ,T (Tiaan)	3	793.2	1218.2	3	788.9	1218.2	0	0	0	0	0	0
6	Kleynhans ,EH (Eldrich Henrico)	3	3	425	3	3	425	0	0	0	0	0	0
6	Kleynhans ,EH (Eldrich Henrico)	3	654.4	1079.4	3	633	1079.4	0	0	0	0	0	0
7	Marx ,HB (Heinrich Butow)	2	2	425	2	2	425	0	0	0	0	0	0
7	Marx ,HB (Heinrich Butow)	2	1129.2	1554.2	2	1121.3	1554.2	0	0	0	0	0	0
8	Duvenhage ,AM (Adriaan Markus)	2	1	0	2	1	0	0	0	0	0	0	0
8	Duvenhage ,AM (Adriaan Markus)	2	1167.8	1167.8	2	1154.1	1167.8	0	0	0	0	0	0
9	Van Zyl ,M (Mischka)	2	1	0	2	1	0	0	0	0	0	0	0
9	Van Zyl ,M (Mischka)	2	1061.8	1061.8	2	1061.6	1061.8	0	0	0	0	0	0
10	Fouche ,E (Estelle)	2	1	0	2	1	0	0	0	0	0	0	0
10	Fouche ,E (Estelle)	2	881.8	881.8	2	863.2	881.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Nel, JB (Janko Bruwer)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms