Chess South Africa Ratings Database

PLAYER PAGE

Personal

Simons, D (Duke)

Chess SA id

174034737

FIDE id

Date of birth

1974-08-18 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-27

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1560.3	1564.6	1509.6	1600.2
Raw rating	1555.7	1556.4	1509.6	1600.2
Weighted rating	1560.3	1564.6	1509.6	1600.1
Weighted performance	1137.8	1126.6	0	0
Floor	1071.4	1072.4	1065	1100.2
K-factor	32	32	32	28
Min/Max rating change allowed	99.9	99.8	106.7	93.8
Highest rating	1601.9 2018-01-01	1601.9 2018-01-01	1565 2018-01-01	1722.9 2018-10-01
Highest raw rating	1571.4 2018-02-01	1572.4 2018-02-01	1565 2018-01-01	1600.2 2024-02-01
Highest weighted rating	1571.4 2018-03-01	1572.4 2018-03-01	1565 2018-01-01	1599.8 2025-08-01
Highest weighted performance	1601.9 2018-01-01	1601.9 2018-01-01	1294 2018-06-01	1722.9 2018-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	-0.3	0	0
New rating	1560.4	1564.2	1509.6	1600.2
Analysis
Rating	1560.3	1564.6	1509.6	1600.2
Raw rating	1555.7	1556.4	1509.6	1600.2
Weighted rating	1560.3	1564.6	1509.6
Weighted performance	1137.8	1126.6	0
K-factor	32	32	32	28
Floor	1071.4	1072.4	1065	1100.2
Max/Min rating change allowed	99.9	99.8	106.7	93.8
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	1555.7	1556.4	1509.6	1600.2
New weighted rating	1560.4	1564.2	1509.6	1600.2
New weighted performance	1128.6	1117.4	0	0
Temp new rating	1560.4	1564.2	1509.6	1600.2
Temp new rating +/-	0	-0.3	0	0
Final new rating +/-	0	-0.3	0	0
New rating	1560.4	1564.2	1509.6	1600.2
New K-factor	32	32	32	28
New floor	1071.4	1072.4	1065	1100.2

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	5	5	0	0
	15	15	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	128	109	7	12

Games since
	Main 20	Standard 20		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
Adult	-1		-1		-1
Adult Male	-1		-1		-1
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	5	3.5	70	170	1296.3	1466.3
Standard	5	3.5	70	170	1296.3	1466.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	71	43	60.56	89.8	1452.9	1542.7
Standard	59	35.5	60.17	86.4	1466	1552.4
Rapid	7	3.5	50	0	1361.2	1361.2
Blitz	5	4	80	255	1426.5	1681.5

Date	Main	Standard	Rapid	Blitz
2025-11-01	1555.7	1556.4	1509.6	1600.2
2025-09-30	1567.5	1571.1	1509.6	1600.2
2025-09-01	1567.5	1571.1	1509.6	1600.2
2025-08-01	1567.5	1571.1	1509.6	1600.2
2025-07-01	1567.5	1571.1	1509.6	1600.2
2025-06-01	1567.5	1571.1	1509.6	1600.2
2025-05-01	1567.5	1571.1	1509.6	1600.2
2025-04-01	1567.5	1571.1	1509.6	1600.2
2025-03-01	1567.5	1571.1	1509.6	1600.2
2025-02-01	1567.5	1571.1	1509.6	1600.2
2025-01-01	1567.5	1571.1	1509.6	1600.2
2024-12-01	1567.5	1571.1	1509.6	1600.2
2024-11-01	1567.5	1571.1	1509.6	1600.2
2024-10-01	1567.5	1571.1	1509.6	1600.2
2024-09-01	1523.5	1531.7	1509.6	1600.2
2024-08-01	1523.5	1531.7	1509.6	1600.2
2024-07-01	1523.5	1531.7	1509.6	1600.2
2024-09-01	1523.5	1531.7	1509.6	1600.2
2024-05-01	1549.7	1558.3	1509.6	1600.2
2024-04-01	1549.7	1558.3	1509.6	1600.2
2024-03-01	1549.7	1558.3	1509.6	1600.2
2024-02-01	1549.7	1558.3	1509.6	1600.2
2024-01-01	1549.7	1558.3	1509.6	1600.2
2023-12-01	1549.7	1558.3	1509.6	1590.6

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	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	5	3.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Cape Town Chess Federation Club League 2025 (D)	2025-07-26	2025-09-27	Standard	Cape Town (WCT)	11	5	3.5	Yes	Analysis
2	CT League 2024 (D-Playoffs)	2024-09-07	2024-09-08	Standard	Cape Town (WCT)	5	4	3	Yes	Analysis
3	CT League 2024 (D)	2024-08-03	2024-08-03	Standard	Cape Town (WCT)	6	6	6	Yes	Analysis
4	Steinitz Chess Festival 2024 (Championship)	2024-05-10	2024-05-12	Standard	Cape Town (WCT)	6	5	0.5	Yes	Analysis
5	2019 Western Province League (Premier)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	10	1.5	Yes	Analysis
6	Steinitz Chess Festival 2019 (B)	2019-04-05	2019-04-07	Standard	Cape Town (WCT)	6	6	4.5	Yes	Analysis
7	West Coast Blits Invitational 2018 (Adults)	2018-10-27	2018-10-27	Blitz	West Coast (WCU)	5	5	4	Yes	Analysis
8	2018 Western Province League (B)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	11	7.5	Yes	Analysis
9	Eldo Smart Memorial Rapid Tournament 2018	2018-06-16	2018-06-16	Rapid	Cape Town (WCT)	7	7	3.5	Yes	Analysis
10	2018 Steinitz Chess Festival (B)	2018-03-21	2018-03-25	Standard	Cape Town (WCT)	7	6	4	Yes	Analysis
11	2018 Cape of Good Hope Open Chess Championships (Prestige)	2018-01-26	2018-01-28	Standard	Cape Town (WCT)	6	6	5	Yes	Analysis

#	Games	Start				End
1	9	Tournament West Coast Blits Invitational 2018				Tournament Steinitz Chess Festival 2019
		date 2018-10-27	rnd 2	type Blitz	result 1	date 2019-04-07	rnd 5	type Standard	result 1
		Opponent October, M (Mario)				Opponent Thompson, T (Themba)
2	8	Tournament Steinitz Chess Festival 2024				Tournament CT League 2024
		date 2024-05-12	rnd 6	type Standard	result 0.5	date 2024-09-07	rnd 2	type Standard	result 1
		Opponent Frick, J (Jacques)				Opponent Liu, A (Amy)
3	8	Tournament 2018 Western Province League				Tournament 2018 Western Province League
		date 2018-08-11	rnd 4	type Standard	result 0.5	date 2018-09-15	rnd 11	type Standard	result 1
		Opponent Nelson, W (Wilfred)				Opponent Steenkamp, M (Malan)

#	Games	Start				End
1	13	Tournament 2018 Western Province League				Tournament Steinitz Chess Festival 2019
		date 2018-08-11	rnd 4	type Standard	result 0.5	date 2019-04-07	rnd 5	type Standard	result 1
		Opponent Nelson, W (Wilfred)				Opponent Thompson, T (Themba)
2	8	Tournament Steinitz Chess Festival 2024				Tournament CT League 2024
		date 2024-05-12	rnd 6	type Standard	result 0.5	date 2024-09-07	rnd 2	type Standard	result 1
		Opponent Frick, J (Jacques)				Opponent Liu, A (Amy)
3	6	Tournament 2018 Steinitz Chess Festival				Tournament 2018 Western Province League
		date 2018-03-23	rnd 4	type Standard	result 1	date 2018-08-04	rnd 2	type Standard	result 1
		Opponent Nel, A (Aiden)				Opponent Daniels, G (George)

#	Games	Start				End
1	3	Tournament Eldo Smart Memorial Rapid Tournament 2018				Tournament Eldo Smart Memorial Rapid Tournament 2018
		date 2018-06-16	rnd 4	type Rapid	result 1	date 2018-06-16	rnd 6	type Rapid	result 0.5
		Opponent Yang, C (Charng-Lin (Ryan))				Opponent Willenberg, I (Ivan)
2	1	Tournament Eldo Smart Memorial Rapid Tournament 2018				Tournament Eldo Smart Memorial Rapid Tournament 2018
		date 2018-06-16	rnd 1	type Rapid	result 1	date 2018-06-16	rnd 1	type Rapid	result 1
		Opponent Van Staaden, D (Darren)				Opponent Van Staaden, D (Darren)

#	Games	Start				End
1	4	Tournament West Coast Blits Invitational 2018				Tournament West Coast Blits Invitational 2018
		date 2018-10-27	rnd 2	type Blitz	result 1	date 2018-10-27	rnd 5	type Blitz	result 1
		Opponent October, M (Mario)				Opponent Basson, JE (Jacques)

#	Games	Start				End
1	7	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-09-07	rnd 2	type Standard	result 1
		Opponent Fani, Z (Zimi)				Opponent Liu, A (Amy)
2	7	Tournament West Coast Blits Invitational 2018				Tournament Steinitz Chess Festival 2019
		date 2018-10-27	rnd 2	type Blitz	result 1	date 2019-04-06	rnd 3	type Standard	result 1
		Opponent October, M (Mario)				Opponent Cloete, A (Al-Jarreau)
3	5	Tournament 2018 Steinitz Chess Festival				Tournament Eldo Smart Memorial Rapid Tournament 2018
		date 2018-03-23	rnd 4	type Standard	result 1	date 2018-06-16	rnd 1	type Rapid	result 1
		Opponent Nel, A (Aiden)				Opponent Van Staaden, D (Darren)

#	Games	Start				End
1	7	Tournament CT League 2024				Tournament CT League 2024
		date 2024-08-03	rnd 1	type Standard	result 1	date 2024-09-07	rnd 2	type Standard	result 1
		Opponent Fani, Z (Zimi)				Opponent Liu, A (Amy)
2	6	Tournament 2018 Steinitz Chess Festival				Tournament 2018 Western Province League
		date 2018-03-23	rnd 4	type Standard	result 1	date 2018-08-04	rnd 2	type Standard	result 1
		Opponent Nel, A (Aiden)				Opponent Daniels, G (George)
3	5	Tournament 2018 Cape of Good Hope Open Chess Championships				Tournament 2018 Cape of Good Hope Open Chess Championships
		date 2018-01-27	rnd 2	type Standard	result 1	date 2018-01-28	rnd 6	type Standard	result 1
		Opponent Mnyasta, T (Tezihano)				Opponent Losper, BD (Brandon)

#	Games	Start				End
1	2	Tournament Eldo Smart Memorial Rapid Tournament 2018				Tournament Eldo Smart Memorial Rapid Tournament 2018
		date 2018-06-16	rnd 4	type Rapid	result 1	date 2018-06-16	rnd 5	type Rapid	result 1
		Opponent Yang, C (Charng-Lin (Ryan))				Opponent Van Staaden, J (Jamie)
2	1	Tournament Eldo Smart Memorial Rapid Tournament 2018				Tournament Eldo Smart Memorial Rapid Tournament 2018
		date 2018-06-16	rnd 1	type Rapid	result 1	date 2018-06-16	rnd 1	type Rapid	result 1
		Opponent Van Staaden, D (Darren)				Opponent Van Staaden, D (Darren)

#	Games	Start				End
1	4	Tournament West Coast Blits Invitational 2018				Tournament West Coast Blits Invitational 2018
		date 2018-10-27	rnd 2	type Blitz	result 1	date 2018-10-27	rnd 5	type Blitz	result 1
		Opponent October, M (Mario)				Opponent Basson, JE (Jacques)

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	Pfende ,T (Takudwza)	2	1	0	2	1	0	0	0	0	0	0	0
1	Pfende ,T (Takudwza)	2	1310.7	1310.7	2	1264	1310.7	0	0	0	0	0	0
2	Prent ,JM (Justin)	2	2	425	2	2	425	0	0	0	0	0	0
2	Prent ,JM (Justin)	2	1255.2	1680.2	2	1261.8	1680.2	0	0	0	0	0	0
3	Du Plessis ,B (Bennie)	2	2	425	2	2	425	0	0	0	0	0	0
3	Du Plessis ,B (Bennie)	2	1167.3	1592.3	2	1130.4	1592.3	0	0	0	0	0	0
4	Mnyasta ,T (Tezihano)	2	1	0	2	1	0	0	0	0	0	0	0
4	Mnyasta ,T (Tezihano)	2	1623.1	1623.1	2	1604.2	1623.1	0	0	0	0	0	0
5	Van Wyk ,AV (Aldrich)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
5	Van Wyk ,AV (Aldrich)	2	1481.1	1693.6	2	1452.8	1693.6	0	0	0	0	0	0
6	Daniels ,G (George)	1	1	425	1	1	425	0	0	0	0	0	0
6	Daniels ,G (George)	1	1625.4	2050.4	1	1623.1	2050.4	0	0	0	0	0	0
7	Fani ,Z (Zimi)	1	1	425	1	1	425	0	0	0	0	0	0
7	Fani ,Z (Zimi)	1	1246.1	1671.1	1	1220.4	1671.1	0	0	0	0	0	0
8	Thompson ,T (Themba)	1	1	425	1	1	425	0	0	0	0	0	0
8	Thompson ,T (Themba)	1	1251.4	1676.4	1	1261	1676.4	0	0	0	0	0	0
9	Maart ,C (Craig)	1	1	425	1	1	425	0	0	0	0	0	0
9	Maart ,C (Craig)	1	1163.5	1588.5	1	1155.6	1588.5	0	0	0	0	0	0
10	Nel ,A (Aiden)	1	1	425	1	1	425	0	0	0	0	0	0
10	Nel ,A (Aiden)	1	1105.6	1530.6	1	1163.2	1530.6	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Simons, D (Duke)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms