Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Walt, J (Jacobus Harm)

Chess SA id

1630300184

FIDE id

Date of birth

1963-03-19 (Adult)

Gender

Male

Region

Dr Kenneth Kaunda (NWP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1250.6	1254.1	1200	1200
Raw rating	1229.4	1226.7	1200	1200
Weighted rating	1250.6	1254.1	1200	1200
Weighted performance	1190.2	1190.4	0	0
Floor	788.1	798.9	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	159	159.6	165.8	165.8
Highest rating	1460.6 2024-03-01	1448.3 2024-03-01	1200 2024-04-01	1200 2024-04-01
Highest raw rating	1288.1 2024-10-01	1298.9 2024-10-01	1200 2024-04-01	1200 2024-04-01
Highest weighted rating	1288.1 2024-10-01	1298.9 2024-10-01	1200 2024-04-01	1200 2024-04-01
Highest weighted performance	1460.6 2024-03-01	1448.3 2024-03-01	1200 2024-04-01	1200 2024-04-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	-1.2	-1.7	0	0
New rating	1249.4	1252.4	1200	1200
Analysis
Rating	1250.6	1254.1	1200	1200
Raw rating	1229.4	1226.7	1200	1200
Weighted rating	1250.6	1254.1	1200
Weighted performance	1190.2	1190.4	0
K-factor	36	36	36	36
Floor	788.1	798.9	700	700
Max/Min rating change allowed	159	159.6	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	1229.4	1226.7	1200	1200
New weighted rating	1249.4	1252.4	1200	1200
New weighted performance	1183.2	1183.4	0	0
Temp new rating	1249.4	1252.4	1200	1200
Temp new rating +/-	-1.2	-1.7	0	0
Final new rating +/-	-1.2	-1.7	0	0
New rating	1249.4	1252.4	1200	1200
New K-factor	36	36	36	36
New floor	788.1	798.9	700	700

Item	Main	Standard
	0	0
	33	33
	27	27
	0	0
	0	0
	0	0
History	60	60

Games since
	Main 60	Standard 60		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Dr Kenneth Kaunda (NWP)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	3712		225		36
Male	2840		184		30
Adult	617		41		10
Adult Male	559		37		9
Standard
	RSA		Province		Region
Overall	3604		247		47
Male	2770		203		40
Adult	575		47		11
Adult Male	520		43		10
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult 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	33	14.5	43.94	-51.5	1283.1	1231.6
Standard	33	14.5	43.94	-51.5	1283.1	1231.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	60	26.5	44.17	-49.6	1313.3	1263.7
Standard	60	26.5	44.17	-49.6	1313.3	1263.7
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1229.4	1226.7	1200	1200
2025-09-30	1247	1249	1200	1200
2025-09-01	1250.3	1254.4	1200	1200
2025-08-01	1250.3	1254.4	1200	1200
2025-07-01	1249.2	1253.3	1200	1200
2025-06-01	1248.1	1252	1200	1200
2025-05-01	1246.9	1250.2	1200	1200
2025-04-01	1257.8	1256.8	1200	1200
2025-03-01	1276.1	1282.7	1200	1200
2025-02-01	1256.4	1259.3	1200	1200
2025-01-01	1256.4	1259.3	1200	1200
2024-12-01	1256.4	1259.3	1200	1200
2024-11-01	1256.4	1259.3	1200	1200
2024-10-01	1288.1	1298.9	1200	1200
2024-09-01	1265.2	1275.1	1200	1200
2024-08-01	1265.2	1275.1	1200	1200
2024-07-01	1219.5	1219.3	1200	1200
2024-09-01	1249.1	1256.4	1200	1200
2024-05-01	1249.1	1256.4	1200	1200
2024-04-01	1249.1	1256.4	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	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	DR KK Chess Volkies 2025 (B)	2025-10-18	2025-10-18	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
2	Dr KK Regional Trials Potch 2025 (B)	2025-09-27	2025-09-27	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
3	Dr KK Regional Trials 2025 (B)	2025-09-06	2025-09-06	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
4	Ashton John 2025 (B)	2025-08-23	2025-08-23	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
5	CURRO Tournament 2025 (Open)	2025-04-12	2025-04-12	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
6	Dr Kenneth Kaunda La Hoff PS 2025 (Open)	2025-03-01	2025-03-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
7	DR KK Volkies 2025 (Open)	2025-02-01	2025-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	DR KK Chess Volkies 2025 (B)	2025-10-18	2025-10-18	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
2	Dr KK Regional Trials Potch 2025 (B)	2025-09-27	2025-09-27	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
3	Dr KK Regional Trials 2025 (B)	2025-09-06	2025-09-06	Standard	Dr Kenneth Kaunda (NWP)	5	5	2.5	Yes	Analysis
4	Ashton John 2025 (B)	2025-08-23	2025-08-23	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
5	CURRO Tournament 2025 (Open)	2025-04-12	2025-04-12	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
6	Dr Kenneth Kaunda La Hoff PS 2025 (Open)	2025-03-01	2025-03-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
7	DR KK Volkies 2025 (Open)	2025-02-01	2025-02-01	Standard	Dr Kenneth Kaunda (NWP)	5	5	2	Yes	Analysis
8	DR KKD Trails 2 2024 (Open)	2024-10-12	2024-10-12	Standard	Dr Kenneth Kaunda (NWP)	5	4	0	Yes	Analysis
9	DR KKD Mooirivier Trials 2024 (Open)	2024-09-14	2024-09-14	Standard	Dr Kenneth Kaunda (NWP)	5	4	1	Yes	Analysis
10	DR KKD Curro Agegroup 2024 (Open)	2024-08-31	2024-08-31	Standard	Dr Kenneth Kaunda (NWP)	5	5	3	Yes	Analysis
11	DR KK Gimmies 2024 (C)	2024-07-13	2024-07-13	Standard	Dr Kenneth Kaunda (NWP)	5	5	4	Yes	Analysis
12	DR KKD Saamtrek 2024 (Open)	2024-06-08	2024-06-08	Standard	Dr Kenneth Kaunda (NWP)	5	4	0.5	Yes	Analysis
13	DR KKD Ferdies Mar 2024 (B)	2024-03-02	2024-03-02	Standard	Dr Kenneth Kaunda (NWP)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament DR KKD Saamtrek 2024				Tournament DR KK Gimmies 2024
		date 2024-06-08	rnd 5	type Standard	result 0.5	date 2024-07-13	rnd 3	type Standard	result 1
		Opponent Venter, H (Henk)				Opponent Havenga, C (Carmie)
2	2	Tournament DR KK Chess Volkies 2025				Tournament DR KK Chess Volkies 2025
		date 2025-10-18	rnd 2	type Standard	result 1	date 2025-10-18	rnd 3	type Standard	result 1
		Opponent Kruger, AJ (Jaco)				Opponent Mazibuko, B (Busisiwe)
3	2	Tournament Dr KK Regional Trials 2025				Tournament Dr KK Regional Trials 2025
		date 2025-09-06	rnd 2	type Standard	result 0.5	date 2025-09-06	rnd 3	type Standard	result 1
		Opponent Phele, B (Boitshepo)				Opponent Sompane, R (Rethobile)

#	Games	Start				End
1	4	Tournament DR KKD Saamtrek 2024				Tournament DR KK Gimmies 2024
		date 2024-06-08	rnd 5	type Standard	result 0.5	date 2024-07-13	rnd 3	type Standard	result 1
		Opponent Venter, H (Henk)				Opponent Havenga, C (Carmie)
2	2	Tournament Ashton John 2025				Tournament Ashton John 2025
		date 2025-08-23	rnd 3	type Standard	result 1	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Nlhopo, N (Ntokozo)				Opponent Maqalike, M (Motlatsi)
3	2	Tournament CURRO Tournament 2025				Tournament Ashton John 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-08-23	rnd 1	type Standard	result 1
		Opponent Venter, H (Henk)				Opponent Modise, T (Thabang)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament DR KK Gimmies 2024				Tournament DR KK Gimmies 2024
		date 2024-07-13	rnd 1	type Standard	result 1	date 2024-07-13	rnd 3	type Standard	result 1
		Opponent Van Rheede Van Oudts, C (Conrad)				Opponent Havenga, C (Carmie)
2	2	Tournament Ashton John 2025				Tournament Ashton John 2025
		date 2025-08-23	rnd 3	type Standard	result 1	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Nlhopo, N (Ntokozo)				Opponent Maqalike, M (Motlatsi)
3	2	Tournament CURRO Tournament 2025				Tournament Ashton John 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-08-23	rnd 1	type Standard	result 1
		Opponent Venter, H (Henk)				Opponent Modise, T (Thabang)

#	Games	Start				End
1	3	Tournament DR KK Gimmies 2024				Tournament DR KK Gimmies 2024
		date 2024-07-13	rnd 1	type Standard	result 1	date 2024-07-13	rnd 3	type Standard	result 1
		Opponent Van Rheede Van Oudts, C (Conrad)				Opponent Havenga, C (Carmie)
2	2	Tournament Ashton John 2025				Tournament Ashton John 2025
		date 2025-08-23	rnd 3	type Standard	result 1	date 2025-08-23	rnd 4	type Standard	result 1
		Opponent Nlhopo, N (Ntokozo)				Opponent Maqalike, M (Motlatsi)
3	2	Tournament CURRO Tournament 2025				Tournament Ashton John 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-08-23	rnd 1	type Standard	result 1
		Opponent Venter, H (Henk)				Opponent Modise, T (Thabang)

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	Venter ,H (Henk)	4	3.5	318.8	4	3.5	318.8	0	0	0	0	0	0
1	Venter ,H (Henk)	4	1188.8	1507.6	4	1185.6	1507.6	0	0	0	0	0	0
2	Ngubeni ,JM (Jackie)	4	0	-425	4	0	-425	0	0	0	0	0	0
2	Ngubeni ,JM (Jackie)	4	1578.8	1153.8	4	1550.8	1153.8	0	0	0	0	0	0
3	Choeu ,K (Kagisho)	3	0	-425	3	0	-425	0	0	0	0	0	0
3	Choeu ,K (Kagisho)	3	1476.7	1051.7	3	1479.7	1051.7	0	0	0	0	0	0
4	Mtiyane ,T (Tyson)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Mtiyane ,T (Tyson)	2	1389.6	964.6	2	1407.1	964.6	0	0	0	0	0	0
5	Phele ,B (Boitshepo)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
5	Phele ,B (Boitshepo)	2	1225.6	1013.1	2	1230.6	1013.1	0	0	0	0	0	0
6	Kock ,H (Hendrik)	2	1	0	2	1	0	0	0	0	0	0	0
6	Kock ,H (Hendrik)	2	1197.7	1197.7	2	1197.6	1197.7	0	0	0	0	0	0
7	Libisi ,L (Libisi)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Libisi ,L (Libisi)	2	1541.8	1116.8	2	1549.2	1116.8	0	0	0	0	0	0
8	Mopalami ,BDN (Boiketlo Daddy Ngakaemany)	2	1	0	2	1	0	0	0	0	0	0	0
8	Mopalami ,BDN (Boiketlo Daddy Ngakaemany)	2	1541.8	1541.8	2	1541.7	1541.8	0	0	0	0	0	0
9	Fourie ,EM (Elzette Mari)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Fourie ,EM (Elzette Mari)	2	1468.9	1043.9	2	1463.1	1043.9	0	0	0	0	0	0
10	Montwedi ,Z (Zenzi)	2	1	0	2	1	0	0	0	0	0	0	0
10	Montwedi ,Z (Zenzi)	2	1138.5	1138.5	2	1130.1	1138.5	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

Van Der Walt, J (Jacobus Harm)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms