Chess South Africa Ratings Database

PLAYER PAGE

Personal

Biri, D (Denison)

Chess SA id

1080152966

FIDE id

Date of birth

2008-05-10 (U18)

Gender

Male

Region

Ethekwini (KED)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-07-07

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1388.7	1370.4	1233.2	1154
Raw rating	1388.7	1370.4	1233.2	1154
Weighted rating	1372.2	1355.5	1233.2	1147.5
Weighted performance	1121.9	0	0	0
Floor	888.7	870.4	733.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	126.7	130.1	158.2	177
Highest rating	1468.6 2023-03-01	1465.9 2023-03-01	1315.6 2023-06-01	1200 2018-10-01
Highest raw rating	1388.7 2024-08-01	1370.4 2024-08-01	1233.2 2024-03-01	1200 2019-12-01
Highest weighted rating	1364.3 2025-08-01	1348.2 2025-08-01	1233.2 2025-05-05	1200 2018-10-01
Highest weighted performance	1468.6 2023-03-01	1465.9 2023-03-01	1315.6 2023-06-01	1200 2019-12-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1388.7	1370.4	1233.2	1154
Analysis
Rating	1388.7	1370.4	1233.2	1154
Raw rating	1388.7	1370.4	1233.2	1154
Weighted rating	1372.2	1355.5	1233.2
Weighted performance	1121.9	0	0
K-factor	36	36	36	36
Floor	888.7	870.4	733.2	700
Max/Min rating change allowed	126.7	130.1	158.2	177
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	1388.7	1370.4	1233.2	1154
New weighted rating	1375.6	1358.7	1233.2	1148.5
New weighted performance	1121.4	0	0	0
Temp new rating	1388.7	1370.4	1233.2	1154
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1388.7	1370.4	1233.2	1154
New K-factor	36	36	36	36
New floor	888.7	870.4	733.2	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	28	17	0	11
	21	5	7	9
	0	0	0	0
	0	0	0	0
History	49	22	7	20

Games since
	Main 37	Standard 17		Rapid 0		Blitz 20
Gender	Male
Age group	U18
Region	Ethekwini (KED)
Province	KwaZulu Natal (KZ)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	546		52		37
Male	482		45		31
U18	63		8		7
U18 Male	54		7		6


	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	49	26.5	54.08	34.7	1365.7	1400.4
Standard	22	14	63.64	115.9	1328.7	1444.6
Rapid	7	4.5	64.29	121.4	1295.4	1416.8
Blitz	20	8	40	-85	1431.1	1346.1

Date	Main	Standard	Rapid	Blitz
2025-09-30	1388.7	1370.4	1233.2	1154
2025-09-01	1388.7	1370.4	1233.2	1154
2025-08-01	1388.7	1370.4	1233.2	1154
2025-07-01	1388.7	1370.4	1233.2	1154
2025-06-01	1388.7	1370.4	1233.2	1154
2025-05-01	1388.7	1370.4	1233.2	1154
2025-04-01	1388.7	1370.4	1233.2	1154
2025-03-01	1388.7	1370.4	1233.2	1154
2025-02-01	1388.7	1370.4	1233.2	1154
2025-01-01	1388.7	1370.4	1233.2	1154
2024-12-01	1388.7	1370.4	1233.2	1154
2024-11-01	1388.7	1370.4	1233.2	1154
2024-10-01	1388.7	1370.4	1233.2	1154
2024-09-01	1388.7	1370.4	1233.2	1154
2024-08-01	1388.7	1370.4	1233.2	1154
2024-07-01	1296	1291.2	1233.2	1108.4
2024-06-01	1296	1291.2	1233.2	1108.4
2024-08-01	1267.9	1259.2	1233.2	1108.4
2024-04-01	1267.9	1259.2	1233.2	1108.4
2024-03-01	1267.9	1259.2	1233.2	1108.4
2024-02-01	1267.9	1259.2	1233.2	1108.4
2024-01-01	1267.9	1259.2	1233.2	1108.4
2023-12-01	1267.9	1259.2	1233.2	1108.4
2023-11-01	1278.2	1259.2	1233.2	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	2025 KZN Provincial Trials (U18)	2025-09-06	2025-09-06	Rapid	Ethekwini (KED)	6	0	0	No	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 KZN Provincial Trials (U18)	2025-09-06	2025-09-06	Rapid	Ethekwini (KED)	6	0	0	No	Analysis
2	2024 ECA 3rd Youth Trials (A)	2024-08-31	2024-09-01	Standard	Ethekwini (KED)	6	0	0	No	Analysis
3	South African Open Chess Championship 2024 (B)	2024-06-29	2024-07-07	Standard	Ethekwini (KED)	11	11	6.5	Yes	Analysis
4	South African Open Chess Championship 2024 (Blitz)	2024-07-04	2024-07-04	Blitz	Ethekwini (KED)	11	11	5.5	Yes	Analysis
5	2024 ECA 2nd Youth Trials (U18+U20)	2024-05-18	2024-05-19	Standard	Ethekwini (KED)	6	6	3.5	Yes	Analysis
6	2024 ECA 1st Youth Trials (U18+U20)	2024-04-13	2024-04-14	Standard	Ethekwini (KED)	6	0	0	No	Analysis
7	2023 USSA Championships (Blitz)	2023-12-06	2023-12-06	Blitz	Ethekwini (KED)	9	9	2.5	Yes	Analysis
8	2023 KZN Winter Schools Selections (U15 Boys)	2023-06-24	2023-06-24	Rapid	Ethekwini (KED)	7	7	4.5	Yes	Analysis
9	Durban Chess Clarence Championship 2023 (C)	2023-03-18	2023-03-18	Standard	Ethekwini (KED)	5	5	4	Yes	Analysis

#	Games	Start				End
1	4	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-05	rnd 8	type Standard	result 1	date 2024-07-07	rnd 11	type Standard	result 1
		Opponent Soojay, J (Josiah)				Opponent Puran, M (Madhav)
2	4	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 3	type Rapid	result 1	date 2023-06-24	rnd 6	type Rapid	result 1
		Opponent Mthembu, S (Sibani)				Opponent Nxumalo, S (Sisonke)
3	4	Tournament Durban Chess Clarence Championship 2023				Tournament Durban Chess Clarence Championship 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-03-18	rnd 4	type Standard	result 1
		Opponent Cason, D (David)				Opponent Rajesh, H (Harshavardan)

#	Games	Start				End
1	4	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-05	rnd 8	type Standard	result 1	date 2024-07-07	rnd 11	type Standard	result 1
		Opponent Soojay, J (Josiah)				Opponent Puran, M (Madhav)
2	4	Tournament Durban Chess Clarence Championship 2023				Tournament Durban Chess Clarence Championship 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-03-18	rnd 4	type Standard	result 1
		Opponent Cason, D (David)				Opponent Rajesh, H (Harshavardan)
3	3	Tournament 2024 ECA 2nd Youth Trials				Tournament 2024 ECA 2nd Youth Trials
		date 2024-05-18	rnd 2	type Standard	result 1	date 2024-05-19	rnd 4	type Standard	result 0.5
		Opponent Taljaard, C (Connor)				Opponent Makaula, V (Vumankosi)

#	Games	Start				End
1	4	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 3	type Rapid	result 1	date 2023-06-24	rnd 6	type Rapid	result 1
		Opponent Mthembu, S (Sibani)				Opponent Nxumalo, S (Sisonke)
2	1	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 1	type Rapid	result 1	date 2023-06-24	rnd 1	type Rapid	result 1
		Opponent Sibhema, O (Owethu)				Opponent Sibhema, O (Owethu)

#	Games	Start				End
1	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 5	type Blitz	result 1	date 2024-07-04	rnd 7	type Blitz	result 1
		Opponent Madhoo, P (Prathana)				Opponent Matshego, T (Thato)
2	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 9	type Blitz	result 1	date 2024-07-04	rnd 10	type Blitz	result 1
		Opponent Varghese, S (Steven)				Opponent Subramoney, T (Tivek)
3	2	Tournament 2023 USSA Championships				Tournament 2023 USSA Championships
		date 2023-12-06	rnd 4	type Blitz	result 0.5	date 2023-12-06	rnd 5	type Blitz	result 1
		Opponent Tiwani, S (Sinethemba)				Opponent Nhlangulela, P (Phumlani)

#	Games	Start				End
1	4	Tournament Durban Chess Clarence Championship 2023				Tournament Durban Chess Clarence Championship 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-03-18	rnd 4	type Standard	result 1
		Opponent Cason, D (David)				Opponent Rajesh, H (Harshavardan)
2	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 5	type Blitz	result 1	date 2024-07-04	rnd 7	type Blitz	result 1
		Opponent Madhoo, P (Prathana)				Opponent Matshego, T (Thato)
3	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-05	rnd 8	type Standard	result 1	date 2024-07-06	rnd 9	type Standard	result 1
		Opponent Soojay, J (Josiah)				Opponent Msani, S (Siza)

#	Games	Start				End
1	4	Tournament Durban Chess Clarence Championship 2023				Tournament Durban Chess Clarence Championship 2023
		date 2023-03-18	rnd 1	type Standard	result 1	date 2023-03-18	rnd 4	type Standard	result 1
		Opponent Cason, D (David)				Opponent Rajesh, H (Harshavardan)
2	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-05	rnd 8	type Standard	result 1	date 2024-07-06	rnd 9	type Standard	result 1
		Opponent Soojay, J (Josiah)				Opponent Msani, S (Siza)
3	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-06-29	rnd 2	type Standard	result 1	date 2024-06-30	rnd 3	type Standard	result 1
		Opponent Mokhothu, P (Palesa)				Opponent Ncokotwane, Z (Zandi)

#	Games	Start				End
1	2	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 5	type Rapid	result 1	date 2023-06-24	rnd 6	type Rapid	result 1
		Opponent Ntuli, S (Samkelo)				Opponent Nxumalo, S (Sisonke)
2	1	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 3	type Rapid	result 1	date 2023-06-24	rnd 3	type Rapid	result 1
		Opponent Mthembu, S (Sibani)				Opponent Mthembu, S (Sibani)
3	1	Tournament 2023 KZN Winter Schools Selections				Tournament 2023 KZN Winter Schools Selections
		date 2023-06-24	rnd 1	type Rapid	result 1	date 2023-06-24	rnd 1	type Rapid	result 1
		Opponent Sibhema, O (Owethu)				Opponent Sibhema, O (Owethu)

#	Games	Start				End
1	3	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 5	type Blitz	result 1	date 2024-07-04	rnd 7	type Blitz	result 1
		Opponent Madhoo, P (Prathana)				Opponent Matshego, T (Thato)
2	2	Tournament South African Open Chess Championship 2024				Tournament South African Open Chess Championship 2024
		date 2024-07-04	rnd 9	type Blitz	result 1	date 2024-07-04	rnd 10	type Blitz	result 1
		Opponent Varghese, S (Steven)				Opponent Subramoney, T (Tivek)
3	1	Tournament 2023 USSA Championships				Tournament 2023 USSA Championships
		date 2023-12-06	rnd 8	type Blitz	result 1	date 2023-12-06	rnd 8	type Blitz	result 1
		Opponent Ellender, A (Asher)				Opponent Ellender, A (Asher)

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	Kazadi ,E (Elisha)	2	0	-425	2	0	-425	0	0	0	0	0	0
1	Kazadi ,E (Elisha)	2	1333.9	908.9	2	1332.7	908.9	0	0	0	0	0	0
2	Subramoney ,R (Riaan)	2	0.5	-212.5	0	0	0	1	0.5	0	1	0	-425
2	Subramoney ,R (Riaan)	2	1362.9	1150.4	0	0	0	1	1253.2	1362.9	1	1185.2	937.9
3	Ncokotwane ,Z (Zandi)	1	1	425	1	1	425	0	0	0	0	0	0
3	Ncokotwane ,Z (Zandi)	1	1269.3	1694.3	1	1262.7	1694.3	0	0	0	0	0	0
4	Mkhize ,L (Lebo)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mkhize ,L (Lebo)	1	1192	1617	1	1200	1617	0	0	0	0	0	0
5	Bezuidenhoudt ,T (Troy)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Bezuidenhoudt ,T (Troy)	1	1121.8	696.8	1	1163.6	696.8	0	0	0	0	0	0
6	Ndlovu ,M (Mlamuli)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Ndlovu ,M (Mlamuli)	1	1562.8	1137.8	1	1582	1137.8	0	0	0	0	0	0
7	Mthethwa ,N (Nqobani)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
7	Mthethwa ,N (Nqobani)	1	1282.6	1282.6	1	1293.9	1282.6	0	0	0	0	0	0
8	Lemena ,A (Andre)	1	1	425	1	1	425	0	0	0	0	0	0
8	Lemena ,A (Andre)	1	1229	1654	1	1232	1654	0	0	0	0	0	0
9	Zambuko ,B (Blessing)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Zambuko ,B (Blessing)	1	1558	1133	1	1558	1133	0	0	0	0	0	0
10	Miglietti ,D (Diego)	1	1	425	1	1	425	0	0	0	0	0	0
10	Miglietti ,D (Diego)	1	1217.3	1642.3	1	1077.4	1642.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Biri, D (Denison)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms