Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koester, E (Euclides Euclides)

Chess SA id

186016097

FIDE id

Date of birth

1986-05-31 (Adult)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-03-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1700.5	1679.1	1536.7	1568.6
Raw rating	1700.5	1678.7	1536.7	1568.6
Weighted rating	1700.1	1679.1	1536.7	1550.4
Weighted performance	0	0	0	0
Floor	1204.9	1183.5	1036.7	1068.6
K-factor	28	28	32	32
Min/Max rating change allowed	81.3	83.8	102.6	98.1
Highest rating	1704.9 2024-02-01	1683.5 2024-02-01	1536.7 2019-03-01	1568.6 2025-05-05
Highest raw rating	1704.9 2024-02-01	1683.5 2024-02-01	1536.7 2024-02-01	1568.6 2025-05-05
Highest weighted rating	1698.7 2025-08-01	1678 2025-08-01	1536.7 2019-03-01	1546.3 2025-08-01
Highest weighted performance	1445.9 2019-09-01	1638.4 2019-09-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0.3	0	0
New rating	1700.5	1679.4	1536.7	1568.6
Analysis
Rating	1700.5	1679.1	1536.7	1568.6
Raw rating	1700.5	1678.7	1536.7	1568.6
Weighted rating	1700.1	1679.1	1536.7
Weighted performance	0	0	0
K-factor	28	28	32	32
Floor	1204.9	1183.5	1036.7	1068.6
Max/Min rating change allowed	81.3	83.8	102.6	98.1
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	1700.5	1678.7	1536.7	1568.6
New weighted rating	1700.5	1679.4	1536.7	1552.3
New weighted performance	0	0	0	0
Temp new rating	1700.5	1679.4	1536.7	1568.6
Temp new rating +/-	0	0.3	0	0
Final new rating +/-	0	0.3	0	0
New rating	1700.5	1679.4	1536.7	1568.6
New K-factor	28	28	32	32
New floor	1204.9	1183.5	1036.7	1068.6

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	9	0	0	9
	2	2	0	0
	8	8	0	0
	12	12	0	0
	0	0	0	0
History	142	105	14	23

Games since
	Main 11	Standard 2		Rapid 0		Blitz 9
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	9	5	55.56	47.2	1674.8	1722
Standard	0	0	0	0	0	0
Rapid	0	0	0	0	0	0
Blitz	9	5	55.56	47.2	1674.8	1722
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	50	29	58	68	1572.6	1640.6
Standard	41	24	58.54	72.6	1550.2	1622.8
Rapid	0	0	0	0	0	0
Blitz	9	5	55.56	47.2	1674.8	1722

Date	Main	Standard	Rapid	Blitz
2025-09-30	1700.5	1678.7	1536.7	1568.6
2025-09-01	1700.5	1678.7	1536.7	1568.6
2025-08-01	1700.5	1678.7	1536.7	1568.6
2025-07-01	1700.5	1678.7	1536.7	1568.6
2025-06-01	1700.5	1678.7	1536.7	1568.6
2025-05-01	1700.5	1678.7	1536.7	1568.6
2025-04-01	1698.7	1678.7	1536.7	1536.7
2025-03-01	1698.7	1678.7	1536.7	1536.7
2025-02-01	1698.7	1678.7	1536.7	1536.7
2025-01-01	1698.7	1678.7	1536.7	1536.7
2024-12-01	1698.7	1678.7	1536.7	1536.7
2024-11-01	1698.7	1678.7	1536.7	1536.7
2024-10-01	1698.7	1678.7	1536.7	1536.7
2024-09-01	1704.9	1683.5	1536.7	1536.7
2024-08-01	1704.9	1683.5	1536.7	1536.7
2024-07-01	1704.9	1683.5	1536.7	1536.7
2024-06-01	1704.9	1683.5	1536.7	1536.7
2024-08-01	1704.9	1683.5	1536.7	1536.7
2024-04-01	1704.9	1683.5	1536.7	1536.7
2024-03-01	1704.9	1683.5	1536.7	1536.7
2024-02-01	1704.9	1683.5	1536.7	1536.7
2024-01-01	1704.9	1683.5	1536.7	1536.7
2023-12-01	1630.7	1618.1	1536.7	1536.7
2023-11-01	1630.7	1618.1	1536.7	1536.7

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	2025 CT Chess Club Blitz Championship	2025-03-19	2025-03-19	Blitz	Cape Town (WCT)	9	9	5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 CT Chess Club Blitz Championship	2025-03-19	2025-03-19	Blitz	Cape Town (WCT)	9	9	5	Yes	Analysis
2	CT League 2024 (A)	2024-07-20	2024-09-07	Standard	Cape Town (WCT)	11	2	0	Yes	Analysis
3	WP Club League 2023 (A)	2023-07-29	2023-09-09	Standard	Cape Town (WCT)	11	8	5	Yes	Analysis
4	Western Cape Club Championship 2022 (Tier 2)	2022-10-07	2022-10-09	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
5	2022 Western Province Club League (Premier)	2022-08-20	2022-10-01	Standard	Cape Town (WCT)	11	6	3.5	Yes	Analysis
6	2019 National Club Chess Championships (B)	2019-09-27	2019-09-29	Standard	Cape Town (WCT)	6	6	5.5	Yes	Analysis
7	2019 Western Province League (B)	2019-07-27	2019-09-07	Standard	Cape Town (WCT)	11	10	8	Yes	Analysis
8	2018 Western Province League (B)	2018-08-04	2018-09-15	Standard	Cape Town (WCT)	11	3	0	Yes	Analysis
9	Eldo Smart Memorial Rapid Tournament 2018	2018-06-16	2018-06-16	Rapid	Cape Town (WCT)	7	0	0	No	Analysis

#	Games	Start				End
1	13	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-08-10	rnd 5	type Standard	result 0.5	date 2019-09-29	rnd 6	type Standard	result 0.5
		Opponent Diamond, R (Ruben)				Opponent Talmarkes, AG (Andrew)
2	5	Tournament WP Club League 2023				Tournament WP Club League 2023
		date 2023-07-29	rnd 1	type Standard	result 0.5	date 2023-08-26	rnd 8	type Standard	result 0.5
		Opponent De Jager, LJ (Luan)				Opponent Adriaan, RD (Rynauw)
3	4	Tournament 2022 Western Province Club League				Tournament 2022 Western Province Club League
		date 2022-09-03	rnd 6	type Standard	result 1	date 2022-10-01	rnd 11	type Standard	result 1
		Opponent Jacobson, G (Gabriel)				Opponent Van Niekerk, MC (Megan)

#	Games	Start				End
1	13	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-08-10	rnd 5	type Standard	result 0.5	date 2019-09-29	rnd 6	type Standard	result 0.5
		Opponent Diamond, R (Ruben)				Opponent Talmarkes, AG (Andrew)
2	5	Tournament WP Club League 2023				Tournament WP Club League 2023
		date 2023-07-29	rnd 1	type Standard	result 0.5	date 2023-08-26	rnd 8	type Standard	result 0.5
		Opponent De Jager, LJ (Luan)				Opponent Adriaan, RD (Rynauw)
3	4	Tournament 2022 Western Province Club League				Tournament 2022 Western Province Club League
		date 2022-09-03	rnd 6	type Standard	result 1	date 2022-10-01	rnd 11	type Standard	result 1
		Opponent Jacobson, G (Gabriel)				Opponent Van Niekerk, MC (Megan)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament 2025 CT Chess Club Blitz Championship				Tournament 2025 CT Chess Club Blitz Championship
		date 2025-03-19	rnd 9	type Blitz	result 1	date 2025-03-19	rnd 9	type Blitz	result 1
		Opponent Rogov, E (Evgenij)				Opponent Rogov, E (Evgenij)
2	1	Tournament 2025 CT Chess Club Blitz Championship				Tournament 2025 CT Chess Club Blitz Championship
		date 2025-03-19	rnd 7	type Blitz	result 1	date 2025-03-19	rnd 7	type Blitz	result 1
		Opponent Kieser, M (Michael)				Opponent Kieser, M (Michael)
3	1	Tournament 2025 CT Chess Club Blitz Championship				Tournament 2025 CT Chess Club Blitz Championship
		date 2025-03-19	rnd 5	type Blitz	result 1	date 2025-03-19	rnd 5	type Blitz	result 1
		Opponent Preston, W (Waylon)				Opponent Preston, W (Waylon)

#	Games	Start				End
1	6	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-09-07	rnd 11	type Standard	result 1	date 2019-09-29	rnd 5	type Standard	result 1
		Opponent Willenberg, RC (Roland)				Opponent Lamprecht, A (Andre)
2	4	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-08-10	rnd 6	type Standard	result 1	date 2019-08-24	rnd 9	type Standard	result 1
		Opponent Steenkamp, M (Malan)				Opponent Lotriet, BCD (Brandon)
3	3	Tournament WP Club League 2023				Tournament WP Club League 2023
		date 2023-08-19	rnd 5	type Standard	result 1	date 2023-08-26	rnd 7	type Standard	result 1
		Opponent Chironda, S (Sean Kudzai)				Opponent Mbendeni, S (Siyakudumisa Kenneth)

#	Games	Start				End
1	6	Tournament 2019 Western Province League				Tournament 2019 National Club Chess Championships
		date 2019-09-07	rnd 11	type Standard	result 1	date 2019-09-29	rnd 5	type Standard	result 1
		Opponent Willenberg, RC (Roland)				Opponent Lamprecht, A (Andre)
2	4	Tournament 2019 Western Province League				Tournament 2019 Western Province League
		date 2019-08-10	rnd 6	type Standard	result 1	date 2019-08-24	rnd 9	type Standard	result 1
		Opponent Steenkamp, M (Malan)				Opponent Lotriet, BCD (Brandon)
3	3	Tournament WP Club League 2023				Tournament WP Club League 2023
		date 2023-08-19	rnd 5	type Standard	result 1	date 2023-08-26	rnd 7	type Standard	result 1
		Opponent Chironda, S (Sean Kudzai)				Opponent Mbendeni, S (Siyakudumisa Kenneth)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament 2025 CT Chess Club Blitz Championship				Tournament 2025 CT Chess Club Blitz Championship
		date 2025-03-19	rnd 9	type Blitz	result 1	date 2025-03-19	rnd 9	type Blitz	result 1
		Opponent Rogov, E (Evgenij)				Opponent Rogov, E (Evgenij)
2	1	Tournament 2025 CT Chess Club Blitz Championship				Tournament 2025 CT Chess Club Blitz Championship
		date 2025-03-19	rnd 7	type Blitz	result 1	date 2025-03-19	rnd 7	type Blitz	result 1
		Opponent Kieser, M (Michael)				Opponent Kieser, M (Michael)
3	1	Tournament 2025 CT Chess Club Blitz Championship				Tournament 2025 CT Chess Club Blitz Championship
		date 2025-03-19	rnd 5	type Blitz	result 1	date 2025-03-19	rnd 5	type Blitz	result 1
		Opponent Preston, W (Waylon)				Opponent Preston, W (Waylon)

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	Palmer ,RN (Reegan)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Palmer ,RN (Reegan)	2	1789.9	1364.9	2	1777.1	1364.9	0	0	0	0	0	0
2	Booys ,LI (Leatin)	1	0	-425	1	0	-425	0	0	0	0	0	0
2	Booys ,LI (Leatin)	1	1611.7	1186.7	1	1599.9	1186.7	0	0	0	0	0	0
3	Van Niekerk ,MC (Megan Courtney)	1	1	425	1	1	425	0	0	0	0	0	0
3	Van Niekerk ,MC (Megan Courtney)	1	1711.5	2136.5	1	1710.9	2136.5	0	0	0	0	0	0
4	Koopstadt ,RT (Rudy Trevor)	1	1	425	1	1	425	0	0	0	0	0	0
4	Koopstadt ,RT (Rudy Trevor)	1	1452.8	1877.8	1	1441.5	1877.8	0	0	0	0	0	0
5	Pick ,DD (Deon Derick)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
5	Pick ,DD (Deon Derick)	1	1707.2	1707.2	1	1711.8	1707.2	0	0	0	0	0	0
6	Sithole ,A (Anoona)	1	1	425	1	1	425	0	0	0	0	0	0
6	Sithole ,A (Anoona)	1	1446.9	1871.9	1	1448.9	1871.9	0	0	0	0	0	0
7	Lotriet ,BCD (Brandon Craig Derek)	1	1	425	1	1	425	0	0	0	0	0	0
7	Lotriet ,BCD (Brandon Craig Derek)	1	1395.3	1820.3	1	1341	1820.3	0	0	0	0	0	0
8	Willenberg ,RC (Roland Chester)	1	1	425	1	1	425	0	0	0	0	0	0
8	Willenberg ,RC (Roland Chester)	1	1650.8	2075.8	1	1676.3	2075.8	0	0	0	0	0	0
9	Adams ,K (Kyle)	1	1	425	1	1	425	0	0	0	0	0	0
9	Adams ,K (Kyle)	1	1277.8	1702.8	1	1235.1	1702.8	0	0	0	0	0	0
10	Diamond ,R (Ruben)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Diamond ,R (Ruben)	1	1658.9	1658.9	1	1656.9	1658.9	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

Koester, E (Euclides Euclides)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms