Chess South Africa Ratings Database

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Personal

Harmse, D (Deon)

Chess SA id

1060138411

FIDE id

Date of birth

2006-11-23 (U20)

Gender

Male

Region

Overberg (WOS)

Citizen

RSA

Titles

CPA

Chess SA registered

Last active game

2025-05-25

Personal details last changed

2025-05-06

Junior GPX Games

Junior GPX Points

1403

Item	Main	Standard	Rapid	Blitz
Rating	1642.4	1652.9	1481.9	1356.1
Raw rating	1641.5	1652.1	1481.9	1356.1
Weighted rating	1642.4	1652.9	1480.7	1354.3
Weighted performance	1431.4	1416.8	1184.9	0
Floor	1178.2	1186.7	981.9	856.1
K-factor	28	28	32	36
Min/Max rating change allowed	88.4	87.1	111	132.8
Highest rating	1705.2 2024-09-01	1694.4 2024-09-01	1540.8 2022-04-01	1434.6 2022-07-01
Highest raw rating	1678.2 2024-10-01	1686.7 2024-10-01	1481.9 2024-05-01	1356.1 2024-04-01
Highest weighted rating	1641.5 2025-08-01	1652.1 2025-08-01	1477.5 2025-08-01	1350.8 2025-08-01
Highest weighted performance	1705.2 2024-09-01	1694.4 2024-09-01	1540.8 2022-04-01	1434.6 2022-07-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0.1	-0	0	0
New rating	1642.5	1652.9	1481.9	1356.1
Analysis
Rating	1642.4	1652.9	1481.9	1356.1
Raw rating	1641.5	1652.1	1481.9	1356.1
Weighted rating	1642.4	1652.9	1480.7
Weighted performance	1431.4	1416.8	1184.9
K-factor	28	28	32	36
Floor	1178.2	1186.7	981.9	856.1
Max/Min rating change allowed	88.4	87.1	111	132.8
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	1641.5	1652.1	1481.9	1356.1
New weighted rating	1642.5	1652.9	1481.3	1355
New weighted performance	1422.1	1407.6	1176.1	0
Temp new rating	1642.5	1652.9	1481.9	1356.1
Temp new rating +/-	0.1	-0	0	0
Final new rating +/-	0.1	-0	0	0
New rating	1642.5	1652.9	1481.9	1356.1
New K-factor	28	28	32	36
New floor	1178.2	1186.7	981.9	856.1

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	14	14	0	0
	53	31	15	7
	63	29	22	12
	45	24	16	5
	0	0	0	0
History	175	98	53	24

Games since
	Main 78	Standard 49		Rapid 15		Blitz 14
Gender	Male
Age group	U20
Region	Overberg (WOS)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	478		144		4
Male	443		134		4
U20	48		15		1
U20 Male	43		15		1
Standard
	RSA		Province		Region
Overall	425		120		3
Male	391		111		3
U20	47		14		1
U20 Male	41		14		1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	220		99		2
Male	209		94		2
U20	17		10		1
U20 Male	16		9		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	14	5.5	39.29	-91.1	1532	1440.9
Standard	14	5.5	39.29	-91.1	1532	1440.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	175	123	70.29	172.4	1408.4	1580.8
Standard	98	68	69.39	164.8	1413.1	1577.9
Rapid	53	40	75.47	216.5	1335.1	1551.6
Blitz	24	15	62.5	106.2	1551.1	1657.3

Date	Main	Standard	Rapid	Blitz
2025-11-01	1641.5	1652.1	1481.9	1356.1
2025-09-30	1641.5	1652.1	1481.9	1356.1
2025-09-01	1641.5	1652.1	1481.9	1356.1
2025-08-01	1641.5	1652.1	1481.9	1356.1
2025-07-01	1640.7	1651.3	1481.9	1356.1
2025-06-01	1639.3	1649.1	1481.9	1356.1
2025-05-01	1638.8	1649.1	1481.9	1356.1
2025-04-01	1637.6	1647.4	1481.9	1356.1
2025-03-01	1636	1645.4	1481.9	1356.1
2025-02-01	1632.3	1640.6	1481.9	1356.1
2025-01-01	1678.2	1686.7	1481.9	1356.1
2024-12-01	1678.2	1686.7	1481.9	1356.1
2024-11-01	1678.2	1686.7	1481.9	1356.1
2024-10-01	1678.2	1686.7	1481.9	1356.1
2024-09-01	1615.8	1627.6	1481.9	1356.1
2024-08-01	1615.8	1627.6	1481.9	1356.1
2024-07-01	1614.2	1625.9	1481.9	1356.1
2024-09-01	1614.2	1625.9	1481.9	1356.1
2024-05-01	1614.2	1625.9	1481.9	1356.1
2024-04-01	1626.3	1625.9	1480.3	1356.1
2024-03-01	1644.8	1666.8	1480.3	1302.5
2024-02-01	1634.8	1666.8	1434.9	1302.5
2024-01-01	1639	1666.8	1414.4	1302.5
2023-12-01	1639	1666.8	1414.4	1302.5

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	Hermanus Chess Club Invitational May 2025	2025-05-24	2025-05-25	Standard	Overberg (WOS)	7	7	4	Yes	Analysis
2	Hermanus Chess Club Invitational January 2025	2025-01-11	2025-01-12	Standard	Overberg (WOS)	7	7	1.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Hermanus Chess Club Invitational May 2025	2025-05-24	2025-05-25	Standard	Overberg (WOS)	7	7	4	Yes	Analysis
2	Hermanus Chess Club Invitational January 2025	2025-01-11	2025-01-12	Standard	Overberg (WOS)	7	7	1.5	Yes	Analysis
3	Paarl Boys' High Chess Festival 2024 (Elite)	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	0	0	No	Analysis
4	Overberg GP Invitational Day 2 2024 (A)	2024-09-27	2024-09-27	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
5	Overberg GP Invitational Day 1 2024 (A)	2024-09-26	2024-09-26	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
6	Overberg Schools - Top Schools 2024 (U18 Mixed)	2024-07-27	2024-07-27	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
7	Curro Hermanus Freedom Day Rapid 2024 (U19)	2024-04-27	2024-04-27	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
8	Western Cape Inter Region Cup 2024 (U20 Boys)	2024-03-23	2024-03-24	Standard	Overberg (WOS)	5	5	2	Yes	Analysis
9	Western Cape Inter Region Cup 2024 (Blitz)	2024-03-22	2024-03-22	Blitz	Overberg (WOS)	7	7	4	Yes	Analysis
10	Western Cape HS Individuals Championship 2024 (U18 Boys)	2024-03-21	2024-03-22	Standard	Overberg (WOS)	6	6	4.5	Yes	Analysis
11	Overberg High Schools Trails 2024 (U18 Boys)	2024-03-02	2024-03-02	Standard	Overberg (WOS)	5	5	4.5	Yes	Analysis
12	Overberg High Schools Trails 2024 (U18)	2024-02-24	2024-02-24	Rapid	Overberg (WOS)	5	5	5	Yes	Analysis
13	Overberg Open Rapid 2024 (Open)	2024-01-27	2024-01-27	Rapid	Overberg (WOS)	5	5	3	Yes	Analysis
14	2023 Western Cape Rural Cup (U18)	2023-12-09	2023-12-10	Standard	Cape Winelands (WCW)	5	4	3	Yes	Analysis
15	2023 Western Cape Rural Cup (Blitz)	2023-12-08	2023-12-08	Blitz	Cape Winelands (WCW)	7	7	4.5	Yes	Analysis
16	Paarl Boys High Chess Festival 2023 (Elite Division)	2023-10-13	2023-10-14	Standard	Cape Winelands (WCW)	6	6	5	Yes	Analysis
17	Overberg Top Schools 2023 (U15+U18)	2023-08-05	2023-08-05	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
18	Curro Durbanville Chess Open Rapid 2023 (Advanced)	2023-07-15	2023-07-15	Rapid	Cape Town (WCT)	6	6	3	Yes	Analysis
19	Western Cape HS Individuals 2023 (U17 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	5	3.5	Yes	Analysis
20	Hermanus Rapid 2023 (B)	2023-04-22	2023-04-22	Rapid	Overberg (WOS)	6	6	5	Yes	Analysis
21	Overberg High School Closed 2023 (U17 Boys)	2023-03-25	2023-03-25	Standard	Overberg (WOS)	5	5	5	Yes	Analysis
22	Western Cape Inter Regional 2023 (Junior Boys)	2023-03-18	2023-03-19	Standard	Eden (WEG)	5	4	1	Yes	Analysis
23	Western Cape Inter Regional 2023 (Blitz)	2023-03-17	2023-03-17	Blitz	Eden (WEG)	5	5	3.5	Yes	Analysis
24	Overberg High Schools Trails 2023 (U17)	2023-02-24	2023-02-24	Rapid	Overberg (WOS)	5	5	5	Yes	Analysis
25	Overberg Schools Open Tournament 2023 (U18)	2023-02-11	2023-02-11	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
26	Western Cape Top Schools 2022 (U18 Mix)	2022-09-16	2022-09-17	Standard	Overberg (WOS)	5	5	3	Yes	Analysis
27	WCCA Rural Cup 2022 (U18)	2022-08-13	2022-08-14	Standard	Overberg (WOS)	5	4	1	Yes	Analysis
28	Overberg Topskole 2022 (O18)	2022-08-30	2022-08-30	Standard	Overberg (WOS)	5	4	4	Yes	Analysis
29	WCCA Rural Cup Blitz 2022	2022-07-12	2022-07-12	Blitz	Overberg (WOS)	5	5	3	Yes	Analysis
30	OCF Youth Day Tournament 2022 (A)	2022-06-18	2022-06-18	Rapid	Overberg (WOS)	5	5	3.5	Yes	Analysis
31	The Hermanus Open 2022 (Open)	2022-05-14	2022-05-14	Rapid	Overberg (WOS)	6	6	3.5	Yes	Analysis
32	Western Cape Schools Chess 2022 (U18 Boys)	2022-05-07	2022-05-08	Standard	Eden (WEG)	6	6	3	Yes	Analysis
33	OCF Open 2022 (U18)	2022-04-09	2022-04-09	Rapid	Overberg (WOS)	5	5	4	Yes	Analysis
34	Overberg 2022 (U18 Boys)	2022-03-05	2022-03-05	Standard	Overberg (WOS)	5	5	3	Yes	Analysis

#	Games	Start				End
1	19	Tournament Curro Hermanus Freedom Day Rapid 2024				Tournament Overberg GP Invitational Day 2 2024
		date 2024-04-27	rnd 2	type Rapid	result 1	date 2024-09-27	rnd 5	type Standard	result 1
		Opponent Mfenyana, U (Ukho)				Opponent Jayiya, L (Lihle)
2	10	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-02-24	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 5	type Standard	result 1
		Opponent Mackenzie, E (Erin-Lee)				Opponent Harmse, J (Jaques)
3	10	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Paarl Boys High Chess Festival 2023
		date 2023-07-15	rnd 6	type Rapid	result 1	date 2023-10-14	rnd 4	type Standard	result 1
		Opponent Somai, R (Ruhan)				Opponent De Wit, M (Marnus)

#	Games	Start				End
1	16	Tournament Western Cape Inter Region Cup 2024				Tournament Overberg GP Invitational Day 2 2024
		date 2024-03-24	rnd 5	type Standard	result 1	date 2024-09-27	rnd 5	type Standard	result 1
		Opponent Opperman, M (Matthew)				Opponent Jayiya, L (Lihle)
2	10	Tournament Western Cape Inter Regional 2023				Tournament Western Cape HS Individuals 2023
		date 2023-03-19	rnd 5	type Standard	result 1	date 2023-04-02	rnd 5	type Standard	result 1
		Opponent Potgieter, KC (Kevin Chris)				Opponent Kruger, S (Sachin)
3	9	Tournament Overberg Top Schools 2023				Tournament Paarl Boys High Chess Festival 2023
		date 2023-08-05	rnd 1	type Standard	result 1	date 2023-10-14	rnd 4	type Standard	result 1
		Opponent Opperman, E (Eldon)				Opponent De Wit, M (Marnus)

#	Games	Start				End
1	11	Tournament Overberg High Schools Trails 2023				Tournament Hermanus Rapid 2023
		date 2023-02-24	rnd 1	type Rapid	result 1	date 2023-04-22	rnd 6	type Rapid	result 1
		Opponent Damons, K (Keagon)				Opponent Mcmanus, D (Dale)
2	7	Tournament OCF Youth Day Tournament 2022				Tournament Overberg Schools Open Tournament 2023
		date 2022-06-18	rnd 3	type Rapid	result 1	date 2023-02-11	rnd 4	type Rapid	result 1
		Opponent Booi, O (Ocean)				Opponent Harmse, J (Jaques)
3	5	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-02-24	rnd 1	type Rapid	result 1	date 2024-02-24	rnd 5	type Rapid	result 1
		Opponent Mackenzie, E (Erin-Lee)				Opponent Harmse, J (Jaques)

#	Games	Start				End
1	6	Tournament 2023 Western Cape Rural Cup				Tournament Western Cape Inter Region Cup 2024
		date 2023-12-08	rnd 5	type Blitz	result 1	date 2024-03-22	rnd 3	type Blitz	result 1
		Opponent Petersen, JD (John-Wayne)				Opponent Brander, WWM (Waylon)
2	5	Tournament Western Cape Inter Regional 2023				Tournament 2023 Western Cape Rural Cup
		date 2023-03-17	rnd 2	type Blitz	result 1	date 2023-12-08	rnd 1	type Blitz	result 1
		Opponent Kiewiet, B (Brook-Lynn)				Opponent Kruger, A (Aiden)
3	2	Tournament WCCA Rural Cup Blitz 2022				Tournament WCCA Rural Cup Blitz 2022
		date 2022-07-12	rnd 3	type Blitz	result 1	date 2022-07-12	rnd 4	type Blitz	result 1
		Opponent Farmer, J (Jaydean)				Opponent Isaacs, WS (William)

#	Games	Start				End
1	19	Tournament Curro Hermanus Freedom Day Rapid 2024				Tournament Overberg GP Invitational Day 2 2024
		date 2024-04-27	rnd 2	type Rapid	result 1	date 2024-09-27	rnd 5	type Standard	result 1
		Opponent Mfenyana, U (Ukho)				Opponent Jayiya, L (Lihle)
2	10	Tournament Curro Durbanville Chess Open Rapid 2023				Tournament Paarl Boys High Chess Festival 2023
		date 2023-07-15	rnd 6	type Rapid	result 1	date 2023-10-14	rnd 4	type Standard	result 1
		Opponent Somai, R (Ruhan)				Opponent De Wit, M (Marnus)
3	8	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-02-24	rnd 1	type Rapid	result 1	date 2024-03-02	rnd 3	type Standard	result 1
		Opponent Mackenzie, E (Erin-Lee)				Opponent Hansen, J (Javen)

#	Games	Start				End
1	16	Tournament Western Cape Inter Region Cup 2024				Tournament Overberg GP Invitational Day 2 2024
		date 2024-03-24	rnd 5	type Standard	result 1	date 2024-09-27	rnd 5	type Standard	result 1
		Opponent Opperman, M (Matthew)				Opponent Jayiya, L (Lihle)
2	9	Tournament Overberg Top Schools 2023				Tournament Paarl Boys High Chess Festival 2023
		date 2023-08-05	rnd 1	type Standard	result 1	date 2023-10-14	rnd 4	type Standard	result 1
		Opponent Opperman, E (Eldon)				Opponent De Wit, M (Marnus)
3	8	Tournament Western Cape Inter Regional 2023				Tournament Western Cape HS Individuals 2023
		date 2023-03-19	rnd 5	type Standard	result 1	date 2023-04-01	rnd 2	type Standard	result 1
		Opponent Potgieter, KC (Kevin Chris)				Opponent De Cafmeyer, L (Luc)

#	Games	Start				End
1	8	Tournament Overberg High Schools Trails 2023				Tournament Hermanus Rapid 2023
		date 2023-02-24	rnd 1	type Rapid	result 1	date 2023-04-22	rnd 3	type Rapid	result 1
		Opponent Damons, K (Keagon)				Opponent Lotriet, BCD (Brandon)
2	5	Tournament Overberg High Schools Trails 2024				Tournament Overberg High Schools Trails 2024
		date 2024-02-24	rnd 1	type Rapid	result 1	date 2024-02-24	rnd 5	type Rapid	result 1
		Opponent Mackenzie, E (Erin-Lee)				Opponent Harmse, J (Jaques)
3	4	Tournament Curro Hermanus Freedom Day Rapid 2024				Tournament Curro Hermanus Freedom Day Rapid 2024
		date 2024-04-27	rnd 2	type Rapid	result 1	date 2024-04-27	rnd 5	type Rapid	result 1
		Opponent Mfenyana, U (Ukho)				Opponent Dyoli, L (Luphelo)

#	Games	Start				End
1	4	Tournament 2023 Western Cape Rural Cup				Tournament Western Cape Inter Region Cup 2024
		date 2023-12-08	rnd 7	type Blitz	result 1	date 2024-03-22	rnd 3	type Blitz	result 1
		Opponent Jacobs, S (Silveano)				Opponent Brander, WWM (Waylon)
2	3	Tournament Western Cape Inter Regional 2023				Tournament Western Cape Inter Regional 2023
		date 2023-03-17	rnd 2	type Blitz	result 1	date 2023-03-17	rnd 4	type Blitz	result 1
		Opponent Kiewiet, B (Brook-Lynn)				Opponent Campbell, G (Grant)
3	2	Tournament WCCA Rural Cup Blitz 2022				Tournament WCCA Rural Cup Blitz 2022
		date 2022-07-12	rnd 3	type Blitz	result 1	date 2022-07-12	rnd 4	type Blitz	result 1
		Opponent Farmer, J (Jaydean)				Opponent Isaacs, WS (William)

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	Harmse ,J (Jacques)	12	9.5	247.9	6	4	141.7	6	5.5	354.2	0	0	0
1	Harmse ,J (Jacques)	12	1427.9	1675.8	6	1486.2	1569.5	6	1232.2	1782	0	0	0
2	Opperman ,C (Connor)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
2	Opperman ,C (Connor)	4	1654.6	1867.1	4	1640.8	1867.1	0	0	0	0	0	0
3	Geyser ,K (Kobus)	4	0	-425	4	0	-425	0	0	0	0	0	0
3	Geyser ,K (Kobus)	4	1644.9	1219.9	4	1620.4	1219.9	0	0	0	0	0	0
4	Laubscher ,E (Erick)	4	3	212.5	3	3	425	1	0	-425	0	0	0
4	Laubscher ,E (Erick)	4	1267.5	1480	3	1223.1	1692.5	1	1202.5	842.5	0	0	0
5	Taute ,C (Clayden)	4	0.5	-318.8	2	0	-425	0	0	0	2	0.5	-212.5
5	Taute ,C (Clayden)	4	1672.7	1354	2	1608.6	1247.7	0	0	0	2	1876.9	1460.2
6	Tyindi ,L (Luvuyo)	3	3	425	3	3	425	0	0	0	0	0	0
6	Tyindi ,L (Luvuyo)	3	1242.2	1667.2	3	1202	1667.2	0	0	0	0	0	0
7	Kariem ,S (Shakir)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
7	Kariem ,S (Shakir)	3	1528	1386.3	3	1537.1	1386.3	0	0	0	0	0	0
8	Southey ,AM (Andrew Mcnab)	3	0	-425	2	0	-425	1	0	-425	0	0	0
8	Southey ,AM (Andrew Mcnab)	3	1686.6	1261.6	2	1728.9	1261.6	1	1710.7	1261.6	0	0	0
9	Crookes ,J (Jonas)	3	2	141.7	1	1	425	2	1	0	0	0	0
9	Crookes ,J (Jonas)	3	1445.8	1587.5	1	1440	1870.8	2	1281.1	1445.8	0	0	0
10	Ncethelo ,B (Bongolethu)	3	0	-425	1	0	-425	1	0	-425	1	0	-425
10	Ncethelo ,B (Bongolethu)	3	1736.4	1311.4	1	1710.3	1311.4	1	1490.6	1311.4	1	1574.8	1311.4

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Harmse, D (Deon)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms