Chess South Africa Ratings Database

PLAYER PAGE

Personal

Botha, B (Bertus)

Chess SA id

110095383

FIDE id

Date of birth

2010-12-02 (U18)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-03-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1058.3	1060.4	1200	1200
Raw rating	1058.3	1060.4	1200	1200
Weighted rating	1058.3	1060.4	1200	1200
Weighted performance	251.9	250.6	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	202.9	202.3	165.8	165.8
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1058.3	1060.4	1200	1200
Analysis
Rating	1058.3	1060.4	1200	1200
Raw rating	1058.3	1060.4	1200	1200
Weighted rating	1058.3	1060.4	1200
Weighted performance	251.9	250.6	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	202.9	202.3	165.8	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	1058.3	1060.4	1200	1200
New weighted rating	1058.3	1060.4	1200	1200
New weighted performance	244.7	243.5	0	0
Temp new rating	1058.3	1060.4	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1058.3	1060.4	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	49	44	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Eden (WEG)
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	44	13.5	30.68	-164.2	1122.1	957.9
Standard	44	13.5	30.68	-164.2	1122.1	957.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2026-01-01	1058.3	1060.4	1200	1200
2025-11-30	1058.3	1060.4	1200	1200
2025-11-01	1058.3	1060.4	1200	1200
2025-09-30	1058.3	1060.4	1200	1200
2025-09-01	1058.3	1060.4	1200	1200
2025-08-01	1058.3	1060.4	1200	1200
2025-07-01	1058.3	1060.4	1200	1200
2025-06-01	1058.3	1060.4	1200	1200
2025-05-01	1058.3	1060.4	1200	1200
2025-04-01	1058.3	1060.4	1200	1200
2025-03-01	1058.3	1060.4	1200	1200
2025-02-01	1058.3	1060.4	1200	1200
2025-01-01	1058.3	1060.4	1200	1200
2024-12-01	1058.3	1060.4	1200	1200
2024-11-01	1058.3	1060.4	1200	1200
2024-10-01	1058.3	1060.4	1200	1200
2024-09-01	1058.3	1060.4	1200	1200
2024-11-01	1058.3	1060.4	1200	1200
2024-07-01	1058.3	1060.4	1200	1200
2024-06-01	1058.3	1060.4	1200	1200
2024-05-01	1058.3	1060.4	1200	1200
2024-04-01	1058.3	1060.4	1200	1200
2024-03-01	1058.3	1060.4	1200	1200
2024-02-01	1058.3	1060.4	1200	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	Eden Schools Closed Trials 1 2020 (U11 Boys)	2020-03-07	2020-03-07	Standard	Eden (WEG)	5	5	2	Yes	Analysis
2	Knysna School Trials Round 2 2020 (Juniors)	2020-02-22	2020-02-22	Standard	Eden (WEG)	5	5	2	Yes	Analysis
3	Eden Trials 3 2019 (U10 Open)	2019-05-11	2019-05-11	Standard	Eden (WEG)	5	5	1	Yes	Analysis
4	Eden Trials 2 2019 (U10 Open)	2019-04-13	2019-04-13	Standard	Eden (WEG)	5	5	1.5	Yes	Analysis
5	Eden Trials 1 2019 (U10 Open)	2019-03-02	2019-03-02	Standard	Eden (WEG)	5	5	1	Yes	Analysis
6	Knysna School Trials #2 2019	2019-02-16	2019-02-16	Standard	Eden (WEG)	5	5	2	Yes	Analysis
7	Knysna School Trials #1 2019	2019-02-02	2019-02-02	Standard	Eden (WEG)	5	5	2	Yes	Analysis
8	EDENSC Closed 1 2018 (U10)	2018-03-10	2018-03-10	Standard	Eden (WEG)	5	5	1	Yes	Analysis
9	Knysna Junior Chess Trials #1 2018	2018-02-10	2018-02-10	Standard	Eden (WEG)	5	4	1	Yes	Analysis

#	Games	Start				End
1	2	Tournament Knysna School Trials #2 2019				Tournament Eden Trials 1 2019
		date 2019-02-16	rnd 5	type Standard	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Van Lill, J (Jandre)				Opponent Adams, J (Jay-D)
2	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 5	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Kuka, A (Avelodwa)				Opponent Kuka, A (Avelodwa)
3	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 2	type Standard	result 1	date 2020-03-07	rnd 2	type Standard	result 1
		Opponent Vermaak, M (Markne)				Opponent Vermaak, M (Markne)

#	Games	Start				End
1	2	Tournament Knysna School Trials #2 2019				Tournament Eden Trials 1 2019
		date 2019-02-16	rnd 5	type Standard	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Van Lill, J (Jandre)				Opponent Adams, J (Jay-D)
2	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 5	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Kuka, A (Avelodwa)				Opponent Kuka, A (Avelodwa)
3	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 2	type Standard	result 1	date 2020-03-07	rnd 2	type Standard	result 1
		Opponent Vermaak, M (Markne)				Opponent Vermaak, M (Markne)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Knysna School Trials #2 2019				Tournament Eden Trials 1 2019
		date 2019-02-16	rnd 5	type Standard	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Van Lill, J (Jandre)				Opponent Adams, J (Jay-D)
2	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 5	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Kuka, A (Avelodwa)				Opponent Kuka, A (Avelodwa)
3	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 2	type Standard	result 1	date 2020-03-07	rnd 2	type Standard	result 1
		Opponent Vermaak, M (Markne)				Opponent Vermaak, M (Markne)

#	Games	Start				End
1	2	Tournament Knysna School Trials #2 2019				Tournament Eden Trials 1 2019
		date 2019-02-16	rnd 5	type Standard	result 1	date 2019-03-02	rnd 1	type Standard	result 1
		Opponent Van Lill, J (Jandre)				Opponent Adams, J (Jay-D)
2	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 5	type Standard	result 1	date 2020-03-07	rnd 5	type Standard	result 1
		Opponent Kuka, A (Avelodwa)				Opponent Kuka, A (Avelodwa)
3	1	Tournament Eden Schools Closed Trials 1 2020				Tournament Eden Schools Closed Trials 1 2020
		date 2020-03-07	rnd 2	type Standard	result 1	date 2020-03-07	rnd 2	type Standard	result 1
		Opponent Vermaak, M (Markne)				Opponent Vermaak, M (Markne)

No games found.

#	Games	Start				End

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	Zhu ,D (David)	2	1	0	2	1	0	0	0	0	0	0	0
1	Zhu ,D (David)	2	1200	1200	2	1200	1200	0	0	0	0	0	0
2	Boshoff ,C (Carla)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Boshoff ,C (Carla)	2	1238.4	813.4	2	1244.6	813.4	0	0	0	0	0	0
3	Prins ,R (Reinhart)	2	0	-425	2	0	-425	0	0	0	0	0	0
3	Prins ,R (Reinhart)	2	1403.9	978.9	2	1395.8	978.9	0	0	0	0	0	0
4	Van Tonder ,M (Monique)	2	1	0	2	1	0	0	0	0	0	0	0
4	Van Tonder ,M (Monique)	2	1076.8	1076.8	2	1085.4	1076.8	0	0	0	0	0	0
5	Joseph ,W (William)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Joseph ,W (William)	2	1207.1	782.1	2	1210.4	782.1	0	0	0	0	0	0
6	Van Niekerk ,N (Nina)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Van Niekerk ,N (Nina)	2	1261.9	836.9	2	1271.8	836.9	0	0	0	0	0	0
7	Stevens ,W (Wichardo)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Stevens ,W (Wichardo)	1	1258	833	1	1275.6	833	0	0	0	0	0	0
8	Mpoyi ,L (Lubanza)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Mpoyi ,L (Lubanza)	1	500	75	1	500	75	0	0	0	0	0	0
9	Van Lill ,J (Jandre)	1	1	425	1	1	425	0	0	0	0	0	0
9	Van Lill ,J (Jandre)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
10	Perks ,K (Kai)	1	1	425	1	1	425	0	0	0	0	0	0
10	Perks ,K (Kai)	1	1200	1625	1	1200	1625	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

Botha, B (Bertus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms