Chess South Africa Ratings Database

PLAYER PAGE

Personal

Botha, J (Jan-Petrus)

Chess SA id

1090105347

FIDE id

Date of birth

2009-06-24 (U18)

Gender

Male

Region

Pixley-ka-Seme (NCP)

Citizen

RSA

Titles

Chess SA registered

Yes

Last active game

2025-08-01

Personal details last changed

2025-02-12

Junior GPX Games

Junior GPX Points

1184.2

Item	Main	Standard	Rapid	Blitz
Rating	1270.4	1265.6	1200	1200
Raw rating	1241.9	1231.7	1200	1200
Weighted rating	1270.4	1265.6	1200	1200
Weighted performance	1142.6	1144.6	0	0
Floor	842.7	841.7	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	156.2	158.5	165.8	165.8
Highest rating	1357.1 2022-04-01	1356 2022-04-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1342.7 2022-05-01	1341.7 2022-05-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1342.7 2023-05-01	1341.7 2023-05-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1357.1 2022-04-01	1356 2022-04-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-2.4	-2.8	0	0
New rating	1268	1262.8	1200	1200
Analysis
Rating	1270.4	1265.6	1200	1200
Raw rating	1241.9	1231.7	1200	1200
Weighted rating	1270.4	1265.6	1200
Weighted performance	1142.6	1144.6	0
K-factor	36	36	36	36
Floor	842.7	841.7	700	700
Max/Min rating change allowed	156.2	158.5	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	1241.9	1231.7	1200	1200
New weighted rating	1268	1262.8	1200	1200
New weighted performance	1142.2	1144.2	0	0
Temp new rating	1268	1262.8	1200	1200
Temp new rating +/-	-2.4	-2.8	0	0
Final new rating +/-	-2.4	-2.8	0	0
New rating	1268	1262.8	1200	1200
New K-factor	36	36	36	36
New floor	842.7	841.7	700	700

Item	Main	Standard
	0	0
	23	23
	44	44
	19	19
	20	20
	30	30
History	189	189

Games since
	Main 67	Standard 67		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Pixley-ka-Seme (NCP)
Province	Northern Cape (NC)
Main
	RSA		Province		Region
Overall	3440		91		23
Male	2675		69		15
U18	524		27		5
U18 Male	431		21		4
Standard
	RSA		Province		Region
Overall	3372		124		28
Male	2611		97		19
U18	542		32		6
U18 Male	448		26		5
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	23	9.5	41.3	-73.9	1299.7	1225.8
Standard	23	9.5	41.3	-73.9	1299.7	1225.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	189	100.5	53.17	27	1186.8	1213.8
Standard	189	100.5	53.17	27	1186.8	1213.8
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1241.9	1231.7	1200	1200
2025-09-01	1241.9	1231.7	1200	1200
2025-08-01	1275.1	1271.2	1200	1200
2025-07-01	1274.7	1270.6	1200	1200
2025-06-01	1273.5	1269.4	1200	1200
2025-05-01	1279.9	1277.9	1200	1200
2025-04-01	1279.9	1277.9	1200	1200
2025-03-01	1279.9	1277.9	1200	1200
2025-02-01	1268.5	1262.5	1200	1200
2025-01-01	1246.7	1238.2	1200	1200
2024-12-01	1246.7	1238.2	1200	1200
2024-11-01	1246.7	1238.2	1200	1200
2024-10-01	1272.7	1269.2	1200	1200
2024-09-01	1272.7	1269.2	1200	1200
2024-08-01	1314.8	1316	1200	1200
2024-07-01	1323	1326.4	1200	1200
2024-06-01	1323	1326.4	1200	1200
2024-08-01	1323	1326.4	1200	1200
2024-04-01	1274.8	1271.8	1200	1200
2024-03-01	1274.8	1271.8	1200	1200
2024-02-01	1253.9	1245.9	1200	1200
2024-01-01	1244.2	1231.1	1200	1200
2023-12-01	1244.2	1231.1	1200	1200
2023-11-01	1244.2	1231.1	1200	1200

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	Hopetown Schools Open 2025 (U17+U19)	2025-08-01	2025-08-01	Standard	Pixley-ka-Seme (NCP)	5	4	0.5	Yes	Analysis
2	Spartan Bishops Championships Elite 2025 (U18)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
3	2025 Hopetown Schools Chess Tournament (U15-U19)	2025-05-17	2025-05-17	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis
4	Hopetown Schools Chess Tournament 2025 (U13-U19)	2025-02-22	2025-02-22	Standard	Pixley-ka-Seme (NCP)	5	5	4	Yes	Analysis
5	2025 HSDA School Chess Tournament (U17+U19)	2025-02-08	2025-02-08	Standard	Pixley-ka-Seme (NCP)	5	4	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Hopetown Schools Open 2025 (U17+U19)	2025-08-01	2025-08-01	Standard	Pixley-ka-Seme (NCP)	5	4	0.5	Yes	Analysis
2	Spartan Bishops Championships Elite 2025 (U18)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
3	2025 Hopetown Schools Chess Tournament (U15-U19)	2025-05-17	2025-05-17	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis
4	Hopetown Schools Chess Tournament 2025 (U13-U19)	2025-02-22	2025-02-22	Standard	Pixley-ka-Seme (NCP)	5	5	4	Yes	Analysis
5	2025 HSDA School Chess Tournament (U17+U19)	2025-02-08	2025-02-08	Standard	Pixley-ka-Seme (NCP)	5	4	1	Yes	Analysis
6	2024 Hopetown Schools Chess Tournament (U15-U19)	2024-10-12	2024-10-12	Standard	Pixley-ka-Seme (NCP)	5	5	1.5	Yes	Analysis
7	Hopetown Schools Chess Tournament 2024 (U15)	2024-08-17	2024-08-17	Standard	Pixley-ka-Seme (NCP)	5	5	3.5	Yes	Analysis
8	2024 NC Closed Chess Championships (U16 Open)	2024-08-23	2024-08-25	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
9	Womens Day Tournament 024 (A)	2024-08-09	2024-08-09	Standard	Frances Baard (NCF)	5	5	2	Yes	Analysis
10	2024 HSDA Open 3 (U15)	2024-07-27	2024-07-27	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
11	Hopetown Open Chess Tournament 2024 (U14+U16)	2024-04-20	2024-04-20	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
12	The Pixley ka Seme Chess Open Schools Tournament 2024 (U15)	2024-04-06	2024-04-06	Standard	Pixley-ka-Seme (NCP)	5	4	3	Yes	Analysis
13	2024 Frances Baard Schools Open (U15)	2024-02-03	2024-02-03	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
14	HSDA School Open 2024 (U16-Open)	2024-01-27	2024-01-27	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
15	Hopetown Chess Open Tournament 2023 (U14-U18)	2023-08-05	2023-08-05	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
16	Hopetown School Chess Open Tournament 2023 (U15)	2023-05-06	2023-05-06	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis
17	Inter Regional Chess Championship 2023 (U16)	2023-05-19	2023-05-20	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
18	Hopetown Schools Chess Open Tournament 2023 (U15)	2023-02-25	2023-02-25	Standard	John Taolo Gaetswewe (NCJ)	5	4	1	Yes	Analysis
19	Pixley Chess Trials 2022 (U14)	2022-09-03	2022-09-03	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
20	Kimberley Chess Club Development Tournament 2022 (E)	2022-08-20	2022-08-20	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
21	Hopetown Chess Club Open Tournament 2022 (U13+U15)	2022-05-14	2022-05-14	Standard	John Taolo Gaetswewe (NCJ)	5	5	2	Yes	Analysis
22	Kimberley Chess Club Open 2022 (U7-U13)	2022-04-30	2022-04-30	Standard	Frances Baard (NCF)	5	5	5	Yes	Analysis
23	Northern Cape Schools Chess Provincial Eliminations 2021 (Boys)	2021-11-05	2021-11-05	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
24	Pixley Schools Summer Games Eliminations 2021	2021-10-14	2021-10-14	Standard	Pixley-ka-Seme (NCP)	5	5	2.5	Yes	Analysis
25	Pixley Trial 1 2022 (A)	2021-10-30	2021-10-30	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
26	Pixley Chess Open 2021 (U14)	2021-05-15	2021-05-15	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
27	Pixley Chess Open 2 2021 (B)	2021-04-17	2021-04-17	Standard	Pixley-ka-Seme (NCP)	5	5	2	Yes	Analysis
28	Pixley Chess Open 2021	2021-03-27	2021-03-27	Standard	Pixley-ka-Seme (NCP)	5	5	3	Yes	Analysis
29	NC Open Schools 2020 (U11 Open)	2020-02-29	2020-02-29	Standard	Frances Baard (NCF)	5	4	2.5	Yes	Analysis
30	Kimberley Chess Club Schools` Open 2019 (U11 Open)	2019-07-20	2019-07-20	Standard	Frances Baard (NCF)	5	5	3	Yes	Analysis
31	Inter Regional Chess Championship 2019 (U12)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
32	Pixley ka Seme Schools Trials 2019 (U11 Boys)	2019-03-09	2019-03-09	Standard	Pixley-ka-Seme (NCP)	5	5	2.5	Yes	Analysis
33	South African Junior Team Championships 2018 (U10C)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	6	4	Yes	Analysis
34	Sol Plaatje University Chess Club Open 2018 (C)	2018-10-13	2018-10-13	Standard	Frances Baard (NCF)	5	4	1	Yes	Analysis
35	Northern Cape Closed Chess Championships 2018 (U10 Open)	2018-08-31	2018-09-01	Standard	Frances Baard (NCF)	5	5	4	Yes	Analysis
36	Frances Baard Schools Open (U9+U11 Boys)	2018-08-17	2018-08-18	Standard	Frances Baard (NCF)	6	6	4	Yes	Analysis
37	LDA Open Tournament 2018 (B)	2018-07-21	2018-07-21	Standard	Pixley-ka-Seme (NCP)	5	5	1.5	Yes	Analysis
38	Inter Regional 2018 (U10 Individual)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	4	1.5	Yes	Analysis
39	Kimberley Chess Club Open Tournament 2018 (C)	2018-02-03	2018-02-03	Standard	Frances Baard (NCF)	5	4	1	Yes	Analysis

#	Games	Start				End
1	7	Tournament Northern Cape Schools Chess Provincial Eliminations 2021				Tournament Hopetown Chess Club Open Tournament 2022
		date 2021-11-05	rnd 5	type Standard	result 1	date 2022-05-14	rnd 1	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Madyo, M (Mbuyiselo)
2	6	Tournament Kimberley Chess Club Development Tournament 2022				Tournament Pixley Chess Trials 2022
		date 2022-08-20	rnd 2	type Standard	result 1	date 2022-09-03	rnd 2	type Standard	result 1
		Opponent Lebogang, P (Phakedi)				Opponent Sinigisi, EM (Emihle Malebo)
3	5	Tournament Pixley Chess Open 2021				Tournament Pixley Schools Summer Games Eliminations 2021
		date 2021-05-15	rnd 4	type Standard	result 1	date 2021-10-14	rnd 3	type Standard	result 1
		Opponent Mjandana, AO (Ambeswa Onke)				Opponent Deysel, M (Marnu)

#	Games	Start				End
1	7	Tournament Northern Cape Schools Chess Provincial Eliminations 2021				Tournament Hopetown Chess Club Open Tournament 2022
		date 2021-11-05	rnd 5	type Standard	result 1	date 2022-05-14	rnd 1	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Madyo, M (Mbuyiselo)
2	6	Tournament Kimberley Chess Club Development Tournament 2022				Tournament Pixley Chess Trials 2022
		date 2022-08-20	rnd 2	type Standard	result 1	date 2022-09-03	rnd 2	type Standard	result 1
		Opponent Lebogang, P (Phakedi)				Opponent Sinigisi, EM (Emihle Malebo)
3	5	Tournament Pixley Chess Open 2021				Tournament Pixley Schools Summer Games Eliminations 2021
		date 2021-05-15	rnd 4	type Standard	result 1	date 2021-10-14	rnd 3	type Standard	result 1
		Opponent Mjandana, AO (Ambeswa Onke)				Opponent Deysel, M (Marnu)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Northern Cape Schools Chess Provincial Eliminations 2021				Tournament Hopetown Chess Club Open Tournament 2022
		date 2021-11-05	rnd 5	type Standard	result 1	date 2022-05-14	rnd 1	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Madyo, M (Mbuyiselo)
2	4	Tournament The Pixley ka Seme Chess Open Schools Tournament 2024				Tournament Hopetown Open Chess Tournament 2024
		date 2024-04-06	rnd 3	type Standard	result 1	date 2024-04-20	rnd 2	type Standard	result 1
		Opponent Tsie, P (Paballo)				Opponent Naude, L (Leonard)
3	4	Tournament Inter Regional Chess Championship 2019				Tournament Kimberley Chess Club Schools` Open 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-07-20	rnd 2	type Standard	result 1
		Opponent Madikizela, C (Cebo)				Opponent De Bruyn, D (Dian)

#	Games	Start				End
1	7	Tournament Northern Cape Schools Chess Provincial Eliminations 2021				Tournament Hopetown Chess Club Open Tournament 2022
		date 2021-11-05	rnd 5	type Standard	result 1	date 2022-05-14	rnd 1	type Standard	result 1
		Opponent Groenewaldt, O (Orren)				Opponent Madyo, M (Mbuyiselo)
2	4	Tournament The Pixley ka Seme Chess Open Schools Tournament 2024				Tournament Hopetown Open Chess Tournament 2024
		date 2024-04-06	rnd 3	type Standard	result 1	date 2024-04-20	rnd 2	type Standard	result 1
		Opponent Tsie, P (Paballo)				Opponent Naude, L (Leonard)
3	4	Tournament Inter Regional Chess Championship 2019				Tournament Kimberley Chess Club Schools` Open 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-07-20	rnd 2	type Standard	result 1
		Opponent Madikizela, C (Cebo)				Opponent De Bruyn, D (Dian)

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	May ,AD (Alrique Dominic)	10	0	-425	10	0	-425	0	0	0	0	0	0
1	May ,AD (Alrique Dominic)	10	1242	817	10	1237.7	817	0	0	0	0	0	0
2	Kitengye ,PE (Patrick Ebondo)	7	1	-303.6	7	1	-303.6	0	0	0	0	0	0
2	Kitengye ,PE (Patrick Ebondo)	7	1291.9	988.4	7	1293.8	988.4	0	0	0	0	0	0
3	Bissett ,CJ (Christiaan Jacobus)	5	2	-85	5	2	-85	0	0	0	0	0	0
3	Bissett ,CJ (Christiaan Jacobus)	5	1202.5	1117.5	5	1203.1	1117.5	0	0	0	0	0	0
4	Naude ,L (Leonard)	5	2.5	0	5	2.5	0	0	0	0	0	0	0
4	Naude ,L (Leonard)	5	1220.4	1220.4	5	1224.7	1220.4	0	0	0	0	0	0
5	Mvenya ,ZL (Zizinwe Libhongo)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
5	Mvenya ,ZL (Zizinwe Libhongo)	4	1217.4	1004.9	4	1232.9	1004.9	0	0	0	0	0	0
6	Botha ,A (Ane)	4	4	425	4	4	425	0	0	0	0	0	0
6	Botha ,A (Ane)	4	1145	1570	4	1142.6	1570	0	0	0	0	0	0
7	Murphy ,M (Migael)	4	0.5	-318.8	4	0.5	-318.8	0	0	0	0	0	0
7	Murphy ,M (Migael)	4	1421.1	1102.4	4	1417.8	1102.4	0	0	0	0	0	0
8	Sinigisi ,EM (Emihle Malebo)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
8	Sinigisi ,EM (Emihle Malebo)	4	1374.6	1162.1	4	1381.6	1162.1	0	0	0	0	0	0
9	Kanjee ,K (Khiyaan)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
9	Kanjee ,K (Khiyaan)	3	1214.1	1355.8	3	1235.5	1355.8	0	0	0	0	0	0
10	Daniels ,O (Owethu)	3	0	-425	3	0	-425	0	0	0	0	0	0
10	Daniels ,O (Owethu)	3	851	426	3	854.3	426	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Botha, J (Jan-Petrus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms