Chess South Africa Ratings Database

PLAYER PAGE

Personal

Udemans, B (Billy)

Chess SA id

1090139779

FIDE id

Date of birth

2009-06-29 (U18)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2023-10-08

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1365.4	1367	1181.7	1165.6
Raw rating	1365.4	1367	1181.7	1165.6
Weighted rating	1364.2	1364.8	1181.7	1165.6
Weighted performance	1027	1022.2	0	0
Floor	921.6	963.2	704.4	700
K-factor	32	32	36	36
Min/Max rating change allowed	131	130.7	170.2	174.1
Highest rating	1453.3 2022-08-01	1478.9 2022-08-01	1212.6 2022-07-01	1200 2018-10-01
Highest raw rating	1421.6 2022-09-01	1463.2 2022-09-01	1204.4 2022-08-01	1200 2020-01-01
Highest weighted rating	1421.6 2024-06-01	1463.2 2024-02-01	1204.4 2022-10-01	1200 2018-10-01
Highest weighted performance	1453.3 2022-08-01	1478.9 2022-08-01	1212.6 2022-07-01	1200 2020-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1365.4	1367	1181.7	1165.6
Analysis
Rating	1365.4	1367	1181.7	1165.6
Raw rating	1365.4	1367	1181.7	1165.6
Weighted rating	1364.2	1364.8	1181.7
Weighted performance	1027	1022.2	0
K-factor	32	32	36	36
Floor	921.6	963.2	704.4	700
Max/Min rating change allowed	131	130.7	170.2	174.1
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	1365.4	1367	1181.7	1165.6
New weighted rating	1364.3	1365	1181.7	1165.6
New weighted performance	1026.5	1021.7	0	0
Temp new rating	1365.4	1367	1181.7	1165.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1365.4	1367	1181.7	1165.6
New K-factor	32	32	36	36
New floor	921.6	963.2	704.4	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	49	44	5	0
	53	35	11	7
	0	0	0	0
History	102	79	16	7

Games since
	Main 12	Standard 12		Rapid 0		Blitz 0
Gender	Male
Age group	U18
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
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	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	102	61	59.8	83.3	1271.9	1355.3
Standard	79	51	64.56	123.7	1266.4	1390.1
Rapid	16	7	43.75	-53.1	1319.3	1266.2
Blitz	7	3	42.86	-60.7	1226.4	1165.7

Date	Main	Standard	Rapid	Blitz
2025-09-30	1365.4	1367	1181.7	1165.6
2025-09-01	1365.4	1367	1181.7	1165.6
2025-08-01	1365.4	1367	1181.7	1165.6
2025-07-01	1365.4	1367	1181.7	1165.6
2025-06-01	1365.4	1367	1181.7	1165.6
2025-05-01	1365.4	1367	1181.7	1165.6
2025-04-01	1365.4	1367	1181.7	1165.6
2025-03-01	1365.4	1367	1181.7	1165.6
2025-02-01	1365.4	1367	1181.7	1165.6
2025-01-01	1362.3	1361.4	1181.7	1165.6
2024-12-01	1362.3	1361.4	1181.7	1165.6
2024-11-01	1362.3	1361.4	1181.7	1165.6
2024-10-01	1362.3	1361.4	1181.7	1165.6
2024-09-01	1362.3	1361.4	1181.7	1165.6
2024-08-01	1362.3	1361.4	1181.7	1165.6
2024-07-01	1362.3	1361.4	1181.7	1165.6
2024-06-01	1362.3	1361.4	1181.7	1165.6
2024-08-01	1362.3	1361.4	1181.7	1165.6
2024-04-01	1362.3	1361.4	1181.7	1165.6
2024-03-01	1362.3	1361.4	1181.7	1165.6
2024-02-01	1362.3	1361.4	1181.7	1165.6
2024-01-01	1362.3	1361.4	1181.7	1165.6
2023-12-01	1362.3	1361.4	1181.7	1165.6
2023-11-01	1362.3	1361.4	1181.7	1165.6

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	Eastern Cape Provincial Individual Championship 2023 (U16 Boys)	2023-10-05	2023-10-06	Standard	Nelson Mandela Bay (ENM)	7	7	2.5	Yes	Analysis
2	Eastern Cape Chess Team Championship 2023 (U16)	2023-10-07	2023-10-08	Standard	Sarah Baartman (ESB)	5	5	4	Yes	Analysis
3	NMBCU Closed 2023 (U16)	2023-08-11	2023-08-12	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
4	2023 EC Schools Provincial Winter Games (U15 Boys)	2023-06-02	2023-06-03	Standard	Buffalo City (EBC)	6	6	4	Yes	Analysis
5	EP Trials 3 2023 (U16)	2023-05-05	2023-05-06	Standard	Nelson Mandela Bay (ENM)	6	6	5	Yes	Analysis
6	Youth Chess Acadamy Rapid Tournament 2023 (A)	2023-03-11	2023-03-11	Rapid	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
7	NMB 2nd Trials 2023 (U16)	2023-03-24	2023-03-25	Standard	Nelson Mandela Bay (ENM)	6	4	1.5	Yes	Analysis
8	NMB 1st Trials 2023 (U16)	2023-02-17	2023-02-18	Standard	Nelson Mandela Bay (ENM)	6	5	2.5	Yes	Analysis
9	2023 Pearson Open Chess Tournament (C)	2023-02-24	2023-02-25	Standard	Nelson Mandela Bay (ENM)	5	5	4	Yes	Analysis
10	Eatern Cape Provincial Chess Championship 2022 (U14 Boys)	2022-10-01	2022-10-01	Standard	Sarah Baartman (ESB)	7	7	4	Yes	Analysis
11	2022 Madibaz Physics Chess Open (C)	2022-10-07	2022-10-08	Rapid	Nelson Mandela Bay (ENM)	7	6	1.5	Yes	Analysis
12	2022 NMBCU Closed 2022 (U14)	2022-08-19	2022-08-20	Standard	Nelson Mandela Bay (ENM)	5	5	4.5	Yes	Analysis
13	2022 NMBCU Trial 4 (U14)	2022-08-12	2022-08-13	Standard	Nelson Mandela Bay (ENM)	6	6	4	Yes	Analysis
14	NMBCU Trial 3 2022 (U14)	2022-07-22	2022-07-23	Standard	Nelson Mandela Bay (ENM)	6	5	4	Yes	Analysis
15	2022 NMB Rapid & Blitz Championships (Rapid)	2022-07-02	2022-07-02	Rapid	Nelson Mandela Bay (ENM)	5	5	2.5	Yes	Analysis
16	2022 NMB Rapid & Blitz Championships (Blitz)	2022-07-02	2022-07-02	Blitz	Nelson Mandela Bay (ENM)	7	7	3	Yes	Analysis
17	2022 NMB Junior Trials 2 (U14)	2022-05-13	2022-05-14	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis
18	2022 NMB Junior Trials 1 (U14)	2022-04-22	2022-04-23	Standard	Nelson Mandela Bay (ENM)	6	6	3.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament 2022 NMBCU Closed 2022				Tournament Eatern Cape Provincial Chess Championship 2022
		date 2022-08-19	rnd 1	type Standard	result 1	date 2022-10-01	rnd 1	type Standard	result 1
		Opponent Schler, J (Jayden)				Opponent Blandy, L (Levi)
2	5	Tournament Eastern Cape Chess Team Championship 2023				Tournament Eastern Cape Chess Team Championship 2023
		date 2023-10-07	rnd 1	type Standard	result 1	date 2023-10-08	rnd 5	type Standard	result 1
		Opponent Mvatyana, L (Linathi)				Opponent Mwelwa, P (Palo)
3	5	Tournament EP Trials 3 2023				Tournament EP Trials 3 2023
		date 2023-05-05	rnd 1	type Standard	result 1	date 2023-05-06	rnd 5	type Standard	result 1
		Opponent Nyoka, I (Ibanathi)				Opponent Slabbert, D (Deon)

#	Games	Start				End
1	6	Tournament 2022 NMBCU Closed 2022				Tournament Eatern Cape Provincial Chess Championship 2022
		date 2022-08-19	rnd 1	type Standard	result 1	date 2022-10-01	rnd 1	type Standard	result 1
		Opponent Schler, J (Jayden)				Opponent Blandy, L (Levi)
2	5	Tournament Eastern Cape Chess Team Championship 2023				Tournament Eastern Cape Chess Team Championship 2023
		date 2023-10-07	rnd 1	type Standard	result 1	date 2023-10-08	rnd 5	type Standard	result 1
		Opponent Mvatyana, L (Linathi)				Opponent Mwelwa, P (Palo)
3	5	Tournament EP Trials 3 2023				Tournament EP Trials 3 2023
		date 2023-05-05	rnd 1	type Standard	result 1	date 2023-05-06	rnd 5	type Standard	result 1
		Opponent Nyoka, I (Ibanathi)				Opponent Slabbert, D (Deon)

#	Games	Start				End
1	2	Tournament 2022 Madibaz Physics Chess Open				Tournament Youth Chess Acadamy Rapid Tournament 2023
		date 2022-10-08	rnd 7	type Rapid	result 0.5	date 2023-03-11	rnd 1	type Rapid	result 1
		Opponent Matlho, O (Onkarabile Lesedi)				Opponent Matintse, S (Soyama)
2	2	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 3	type Rapid	result 0.5	date 2022-07-02	rnd 4	type Rapid	result 1
		Opponent Pienaar, K (Keane)				Opponent Sibengile, Z (Zolani)
3	1	Tournament Youth Chess Acadamy Rapid Tournament 2023				Tournament Youth Chess Acadamy Rapid Tournament 2023
		date 2023-03-11	rnd 5	type Rapid	result 1	date 2023-03-11	rnd 5	type Rapid	result 1
		Opponent Cornelius, S (Sebastian)				Opponent Cornelius, S (Sebastian)

#	Games	Start				End
1	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 7	type Blitz	result 1	date 2022-07-02	rnd 7	type Blitz	result 1
		Opponent Faniswa, A (Aviwe)				Opponent Faniswa, A (Aviwe)
2	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 4	type Blitz	result 1	date 2022-07-02	rnd 4	type Blitz	result 1
		Opponent Bains, A (Alex)				Opponent Bains, A (Alex)
3	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 2	type Blitz	result 1	date 2022-07-02	rnd 2	type Blitz	result 1
		Opponent Chipunza, J (Jaden)				Opponent Chipunza, J (Jaden)

#	Games	Start				End
1	5	Tournament EP Trials 3 2023				Tournament EP Trials 3 2023
		date 2023-05-05	rnd 1	type Standard	result 1	date 2023-05-06	rnd 5	type Standard	result 1
		Opponent Nyoka, I (Ibanathi)				Opponent Slabbert, D (Deon)
2	5	Tournament NMBCU Trial 3 2022				Tournament 2022 NMBCU Trial 4
		date 2022-07-23	rnd 4	type Standard	result 1	date 2022-08-13	rnd 2	type Standard	result 1
		Opponent Felkers, C (Caylem)				Opponent Schler, J (Jayden)
3	4	Tournament 2023 EC Schools Provincial Winter Games				Tournament NMBCU Closed 2023
		date 2023-06-03	rnd 5	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Myburgh, B (Bruce)				Opponent Lippstreu, C (Caleb)

#	Games	Start				End
1	5	Tournament EP Trials 3 2023				Tournament EP Trials 3 2023
		date 2023-05-05	rnd 1	type Standard	result 1	date 2023-05-06	rnd 5	type Standard	result 1
		Opponent Nyoka, I (Ibanathi)				Opponent Slabbert, D (Deon)
2	5	Tournament NMBCU Trial 3 2022				Tournament 2022 NMBCU Trial 4
		date 2022-07-23	rnd 4	type Standard	result 1	date 2022-08-13	rnd 2	type Standard	result 1
		Opponent Felkers, C (Caylem)				Opponent Schler, J (Jayden)
3	4	Tournament 2023 EC Schools Provincial Winter Games				Tournament NMBCU Closed 2023
		date 2023-06-03	rnd 5	type Standard	result 1	date 2023-08-12	rnd 2	type Standard	result 1
		Opponent Myburgh, B (Bruce)				Opponent Lippstreu, C (Caleb)

#	Games	Start				End
1	1	Tournament Youth Chess Acadamy Rapid Tournament 2023				Tournament Youth Chess Acadamy Rapid Tournament 2023
		date 2023-03-11	rnd 5	type Rapid	result 1	date 2023-03-11	rnd 5	type Rapid	result 1
		Opponent Cornelius, S (Sebastian)				Opponent Cornelius, S (Sebastian)
2	1	Tournament Youth Chess Acadamy Rapid Tournament 2023				Tournament Youth Chess Acadamy Rapid Tournament 2023
		date 2023-03-11	rnd 3	type Rapid	result 1	date 2023-03-11	rnd 3	type Rapid	result 1
		Opponent Jaffray, J (Joseph)				Opponent Jaffray, J (Joseph)
3	1	Tournament Youth Chess Acadamy Rapid Tournament 2023				Tournament Youth Chess Acadamy Rapid Tournament 2023
		date 2023-03-11	rnd 1	type Rapid	result 1	date 2023-03-11	rnd 1	type Rapid	result 1
		Opponent Matintse, S (Soyama)				Opponent Matintse, S (Soyama)

#	Games	Start				End
1	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 7	type Blitz	result 1	date 2022-07-02	rnd 7	type Blitz	result 1
		Opponent Faniswa, A (Aviwe)				Opponent Faniswa, A (Aviwe)
2	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 4	type Blitz	result 1	date 2022-07-02	rnd 4	type Blitz	result 1
		Opponent Bains, A (Alex)				Opponent Bains, A (Alex)
3	1	Tournament 2022 NMB Rapid & Blitz Championships				Tournament 2022 NMB Rapid & Blitz Championships
		date 2022-07-02	rnd 2	type Blitz	result 1	date 2022-07-02	rnd 2	type Blitz	result 1
		Opponent Chipunza, J (Jaden)				Opponent Chipunza, J (Jaden)

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	Peter ,N (Noah)	7	2	-182.1	7	2	-182.1	0	0	0	0	0	0
1	Peter ,N (Noah)	7	1548.5	1366.3	7	1562	1366.3	0	0	0	0	0	0
2	Taljard ,J (Julian)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
2	Taljard ,J (Julian)	3	1369	1510.7	3	1394.2	1510.7	0	0	0	0	0	0
3	Schler ,J (Jayden)	3	3	425	3	3	425	0	0	0	0	0	0
3	Schler ,J (Jayden)	3	1203.7	1628.7	3	1203	1628.7	0	0	0	0	0	0
4	Slabbert ,D (Deon)	2	1	0	2	1	0	0	0	0	0	0	0
4	Slabbert ,D (Deon)	2	1339.7	1339.7	2	1333.3	1339.7	0	0	0	0	0	0
5	Munir ,A (Ainy)	2	2	425	2	2	425	0	0	0	0	0	0
5	Munir ,A (Ainy)	2	1126.1	1551.1	2	1131	1551.1	0	0	0	0	0	0
6	Bouwer ,R (Ruben)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Bouwer ,R (Ruben)	2	1307.9	882.9	2	1302.7	882.9	0	0	0	0	0	0
7	Grigor ,R (Ruan)	2	1	0	2	1	0	0	0	0	0	0	0
7	Grigor ,R (Ruan)	2	1276	1276	2	1280.3	1276	0	0	0	0	0	0
8	Sihewula ,A (Achuma)	2	2	425	2	2	425	0	0	0	0	0	0
8	Sihewula ,A (Achuma)	2	1142.2	1567.2	2	1158.3	1567.2	0	0	0	0	0	0
9	Marais ,R (Ryan)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
9	Marais ,R (Ryan)	2	1302.4	1514.9	2	1285.3	1514.9	0	0	0	0	0	0
10	Collett ,S (Samuel)	2	1	0	2	1	0	0	0	0	0	0	0
10	Collett ,S (Samuel)	2	1307.4	1307.4	2	1318.8	1307.4	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

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PLAYER PAGE

Personal

Udemans, B (Billy)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms