Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koshy, D (Don)

Chess SA id

102067533

FIDE id

Date of birth

2002-01-03 (Adult)

Gender

Male

Region

Buffalo City (EBC)

Citizen

RSA

Titles

Chess SA registered

Last active game

2019-02-23

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1157.1	1161.5	805.6	805.6
Raw rating	1157.1	1161.5	805.6	805.6
Weighted rating	1157.1	1161.5	805.6	805.6
Weighted performance	134.3	134.4	0	0
Floor	657.1	661.5	500	500
K-factor	40	40	40	40
Min/Max rating change allowed	176.3	175.2	290.8	290.8
Highest rating	1200 2024-11-01	1200 2024-11-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1157.1 2024-02-01	1161.5 2024-02-01	805.6 2024-02-01	805.6 2024-02-01
Highest weighted rating	1157.1 2024-11-01	1161.5 2024-11-01	805.6 2024-11-01	805.6 2024-11-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1157.1	1161.5	805.6	805.6
Analysis
Rating	1157.1	1161.5	805.6	805.6
Raw rating	1157.1	1161.5	805.6	805.6
Weighted rating	1157.1	1161.5	805.6
Weighted performance	134.3	134.4	0
K-factor	40	40	40	40
Floor	657.1	661.5	500	500
Max/Min rating change allowed	176.3	175.2	290.8	290.8
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	1157.1	1161.5	805.6	805.6
New weighted rating	1157.1	1161.5	805.6	805.6
New weighted performance	133.9	134	0	0
Temp new rating	1157.1	1161.5	805.6	805.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1157.1	1161.5	805.6	805.6
New K-factor	40	40	40	40
New floor	657.1	661.5	500	500

Item	Main	Standard	Blitz
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
History	90	76	14

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	Adult
Region	Buffalo City (EBC)
Province	Eastern Cape (EC)
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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	35	18.5	52.86	24.3	1096.9	1121.1
Standard	35	18.5	52.86	24.3	1096.9	1121.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1157.1	1161.5	805.6	805.6
2025-09-01	1157.1	1161.5	805.6	805.6
2025-08-01	1157.1	1161.5	805.6	805.6
2025-07-01	1157.1	1161.5	805.6	805.6
2025-06-01	1157.1	1161.5	805.6	805.6
2025-05-01	1157.1	1161.5	805.6	805.6
2025-04-01	1157.1	1161.5	805.6	805.6
2025-03-01	1157.1	1161.5	805.6	805.6
2025-02-01	1157.1	1161.5	805.6	805.6
2025-01-01	1157.1	1161.5	805.6	805.6
2024-12-01	1157.1	1161.5	805.6	805.6
2024-11-01	1157.1	1161.5	805.6	805.6
2024-10-01	1157.1	1161.5	805.6	805.6
2024-09-01	1157.1	1161.5	805.6	805.6
2024-08-01	1157.1	1161.5	805.6	805.6
2024-07-01	1157.1	1161.5	805.6	805.6
2024-06-01	1157.1	1161.5	805.6	805.6
2024-08-01	1157.1	1161.5	805.6	805.6
2024-04-01	1157.1	1161.5	805.6	805.6
2024-03-01	1157.1	1161.5	805.6	805.6
2024-02-01	1157.1	1161.5	805.6	805.6
2024-01-01	1157.1	1161.5	805.6	805.6
2023-12-01	1157.1	1161.5	805.6	805.6
2023-11-01	1157.1	1161.5	805.6	805.6

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Grey College Team Championship 2019 (B)	2019-02-22	2019-02-23	Standard	Mangaung (FMB)	5	4	3	Yes	Analysis
2	East London School League 2018 (High School)	2018-08-18	2018-08-18	Standard	Buffalo City (EBC)	5	4	2	Yes	Analysis
3	Buffalo Trails 3rd 2018 (U18A-Adult)	2018-03-25	2018-03-25	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
4	2nd Buffalo Trials 2018 (U18A)	2018-03-03	2018-03-03	Standard	Buffalo City (EBC)	5	5	3	Yes	Analysis
5	Grey College Inter Team Chess Tournament 2018 (B)	2018-02-23	2018-02-24	Standard	Mangaung (FMB)	5	5	4.5	Yes	Analysis
6	Buffalo City 1st Chess Trials 2018 (U18A)	2018-02-03	2018-02-03	Standard	Buffalo City (EBC)	5	5	2	Yes	Analysis
7	South African Junior Team Championships 2017 (U16A)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	7	1	Yes	Analysis

#	Games	Start				End
1	8	Tournament Grey College Inter Team Chess Tournament 2018				Tournament 2nd Buffalo Trials 2018
		date 2018-02-23	rnd 1	type Standard	result 1	date 2018-03-03	rnd 3	type Standard	result 1
		Opponent Mxaxa, U (Unam)				Opponent Jayakody, D (Don)
2	4	Tournament East London School League 2018				Tournament Grey College Team Championship 2019
		date 2018-08-18	rnd 5	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Henderson, T (Tristan)				Opponent Sibanda, M (Mitchell)
3	3	Tournament South African Junior Team Championships 2017				Tournament Buffalo City 1st Chess Trials 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-02-03	rnd 2	type Standard	result 1
		Opponent Potgieter, J (Juwen)				Opponent Kolisi, M (Mbasa)

#	Games	Start				End
1	8	Tournament Grey College Inter Team Chess Tournament 2018				Tournament 2nd Buffalo Trials 2018
		date 2018-02-23	rnd 1	type Standard	result 1	date 2018-03-03	rnd 3	type Standard	result 1
		Opponent Mxaxa, U (Unam)				Opponent Jayakody, D (Don)
2	4	Tournament East London School League 2018				Tournament Grey College Team Championship 2019
		date 2018-08-18	rnd 5	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Henderson, T (Tristan)				Opponent Sibanda, M (Mitchell)
3	3	Tournament South African Junior Team Championships 2017				Tournament Buffalo City 1st Chess Trials 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-02-03	rnd 2	type Standard	result 1
		Opponent Potgieter, J (Juwen)				Opponent Kolisi, M (Mbasa)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament East London School League 2018				Tournament Grey College Team Championship 2019
		date 2018-08-18	rnd 5	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Henderson, T (Tristan)				Opponent Sibanda, M (Mitchell)
2	3	Tournament Grey College Inter Team Chess Tournament 2018				Tournament 2nd Buffalo Trials 2018
		date 2018-02-24	rnd 4	type Standard	result 1	date 2018-03-03	rnd 1	type Standard	result 1
		Opponent Curgenven, B (Byron)				Opponent Fekade, G (Gcisa)
3	3	Tournament South African Junior Team Championships 2017				Tournament Buffalo City 1st Chess Trials 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-02-03	rnd 2	type Standard	result 1
		Opponent Potgieter, J (Juwen)				Opponent Kolisi, M (Mbasa)

#	Games	Start				End
1	4	Tournament East London School League 2018				Tournament Grey College Team Championship 2019
		date 2018-08-18	rnd 5	type Standard	result 1	date 2019-02-23	rnd 4	type Standard	result 1
		Opponent Henderson, T (Tristan)				Opponent Sibanda, M (Mitchell)
2	3	Tournament Grey College Inter Team Chess Tournament 2018				Tournament 2nd Buffalo Trials 2018
		date 2018-02-24	rnd 4	type Standard	result 1	date 2018-03-03	rnd 1	type Standard	result 1
		Opponent Curgenven, B (Byron)				Opponent Fekade, G (Gcisa)
3	3	Tournament South African Junior Team Championships 2017				Tournament Buffalo City 1st Chess Trials 2018
		date 2018-01-08	rnd 7	type Standard	result 1	date 2018-02-03	rnd 2	type Standard	result 1
		Opponent Potgieter, J (Juwen)				Opponent Kolisi, M (Mbasa)

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	Deang ,A (Alman)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Deang ,A (Alman)	2	1276.8	851.8	2	1276.1	851.8	0	0	0	0	0	0
2	Potgieter ,J (Juwen)	1	1	425	1	1	425	0	0	0	0	0	0
2	Potgieter ,J (Juwen)	1	949.8	1374.8	1	949.8	1374.8	0	0	0	0	0	0
3	Curgenven ,B (Byron)	1	1	425	1	1	425	0	0	0	0	0	0
3	Curgenven ,B (Byron)	1	995	1420	1	995	1420	0	0	0	0	0	0
4	Modi ,S (Sonia)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Modi ,S (Sonia)	1	1724.5	1299.5	1	1724.5	1299.5	0	0	0	0	0	0
5	Mercer ,M (Michael)	1	1	425	1	1	425	0	0	0	0	0	0
5	Mercer ,M (Michael)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
6	Reddy ,S (Sachin)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Reddy ,S (Sachin)	1	1537.6	1112.6	1	1537.6	1112.6	0	0	0	0	0	0
7	Gwayi ,L (Lunathi)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Gwayi ,L (Lunathi)	1	976.9	551.9	1	976.9	551.9	0	0	0	0	0	0
8	Henderson ,T (Tristan)	1	1	425	1	1	425	0	0	0	0	0	0
8	Henderson ,T (Tristan)	1	884	1309	1	884	1309	0	0	0	0	0	0
9	Sapere ,R (Rafael)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Sapere ,R (Rafael)	1	1194.1	769.1	1	1194.1	769.1	0	0	0	0	0	0
10	Mancoda ,B (Buthanani)	1	1	425	1	1	425	0	0	0	0	0	0
10	Mancoda ,B (Buthanani)	1	1200	1625	1	1200	1625	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Koshy, D (Don)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms