Chess South Africa Ratings Database

PLAYER PAGE

Personal

Bosch, R (Rayhaan)

Chess SA id

1120306081

FIDE id

Date of birth

2012-12-28 (U14)

Gender

Male

Region

Nelson Mandela Bay (ENM)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-07

Personal details last changed

2025-02-24

Junior GPX Games

Junior GPX Points

1239.1

Item	Main	Standard	Rapid	Blitz
Rating	1242.8	1234.9	1167.8	1200
Raw rating	1242.8	1234.9	1167.8	1200
Weighted rating	1208.8	1216.4	1163.6	1200
Weighted performance	1211.9	1199.4	0	0
Floor	789.2	783.1	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	156	157.8	173.6	165.8
Highest rating	1294.6 2025-09-01	1283.1 2025-09-01	1200 2024-06-01	1200 2024-06-01
Highest raw rating	1289.2 2025-09-01	1283.1 2025-09-01	1200 2024-06-01	1200 2024-06-01
Highest weighted rating	1241.9 2024-06-01	1242.5 2024-06-01	1200 2024-06-01	1200 2024-06-01
Highest weighted performance	1294.6 2025-09-01	1281.5 2025-09-01	1200 2024-12-01	1200 2024-06-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1242.8	1234.9	1167.8	1200
Analysis
Rating	1242.8	1234.9	1167.8	1200
Raw rating	1242.8	1234.9	1167.8	1200
Weighted rating	1208.8	1216.4	1163.6
Weighted performance	1211.9	1199.4	0
K-factor	36	36	36	36
Floor	789.2	783.1	700	700
Max/Min rating change allowed	156	157.8	173.6	165.8
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	1242.8	1234.9	1167.8	1200
New weighted rating	1212.2	1218.4	1163.4	1200
New weighted performance	1211.5	1199	0	0
Temp new rating	1242.8	1234.9	1167.8	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1242.8	1234.9	1167.8	1200
New K-factor	36	36	36	36
New floor	789.2	783.1	700	700

Item	Main	Standard	Rapid
	0	0	0
	69	69	0
	8	1	7
	0	0	0
	0	0	0
	0	0	0
History	77	70	7

Games since
	Main 77	Standard 70		Rapid 7		Blitz 0
Gender	Male
Age group	U14
Region	Nelson Mandela Bay (ENM)
Province	Eastern Cape (EC)
Main
	RSA		Province		Region
Overall	3697		498		166
Male	2833		402		137
U14	693		104		31
U14 Male	499		79		21
Standard
	RSA		Province		Region
Overall	3651		516		161
Male	2785		414		132
U14	702		110		30
U14 Male	497		84		20
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	69	26.5	38.41	-98.6	1333.1	1234.6
Standard	69	26.5	38.41	-98.6	1333.1	1234.6
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	77	28.5	37.01	-110.4	1321.5	1211.1
Standard	70	26.5	37.86	-103.2	1330.9	1227.7
Rapid	7	2	28.57	-182.1	1227.3	1045.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1242.8	1234.9	1167.8	1200
2025-09-01	1289.2	1283.1	1167.8	1200
2025-08-01	1247.7	1243.8	1167.8	1200
2025-07-01	1241.9	1242.5	1167.8	1200
2025-06-01	1207.3	1201	1167.8	1200
2025-05-01	1225.5	1224	1167.8	1200
2025-04-01	1226.2	1221.5	1167.8	1200
2025-03-01	1197.7	1212.3	1167.8	1200
2025-02-01	1179.2	1194.6	1166.7	1200
2025-01-01	1150.9	1176.4	1138.8	1200
2024-12-01	1150.9	1176.4	1138.8	1200
2024-11-01	1169.3	1200	1138.8	1200
2024-10-01	1169.3	1200	1138.8	1200
2024-09-01	1169.3	1200	1138.8	1200
2024-08-01	1170.8	1200	1140.4	1200
2024-07-01	1170.8	1200	1140.4	1200
2024-06-01	1200	1200	1200	1200
2024-08-01	1200	1200	1200	1200
2024-04-01	1200	1200	1200	1200
2024-03-01	1200	1200	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	1200	1200	1200	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	EC Closed 2025 (U14 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	5	0.5	Yes	Analysis
2	UCC Championship 2025 (B)	2025-07-22	2025-08-19	Standard	Nelson Mandela Bay (ENM)	5	4	1.5	Yes	Analysis
3	UCC Mind Over Board 2025 (B)	2025-08-01	2025-08-03	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
4	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U14 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	2.5	Yes	Analysis
5	Eastern Cape Inter-Regional Team Chess Championship 2025 (U14)	2025-07-10	2025-07-11	Standard	Amathole (EAL)	5	5	1	Yes	Analysis
6	NMBCU Closed 2025 (U14)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
7	NMBCU Open 2025 (B)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
8	NMBCU Trial 4 2025 (U14)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	1.5	Yes	Analysis
9	UCC Presidential Cup 2025 (B)	2025-04-08	2025-05-06	Standard	Nelson Mandela Bay (ENM)	5	2	1	Yes	Analysis
10	NMB 3rd Trials 2025 (U14)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
11	NMB 2nd Trials 2025 (U14)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
12	UCC Strategic Moves 2025 (B)	2025-02-28	2025-03-01	Standard	Nelson Mandela Bay (ENM)	5	5	2.5	Yes	Analysis
13	Uitenhage Chess Club Protea Cup 2025 (B)	2025-01-28	2025-02-25	Standard	Nelson Mandela Bay (ENM)	5	1	1	Yes	Analysis
14	NMBCH Trial 1 2025 (U14)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	EC Closed 2025 (U14 Boys)	2025-09-06	2025-09-07	Standard	Nelson Mandela Bay (ENM)	6	5	0.5	Yes	Analysis
2	UCC Championship 2025 (B)	2025-07-22	2025-08-19	Standard	Nelson Mandela Bay (ENM)	5	4	1.5	Yes	Analysis
3	UCC Mind Over Board 2025 (B)	2025-08-01	2025-08-03	Standard	Nelson Mandela Bay (ENM)	5	5	3	Yes	Analysis
4	Eastern Cape Inter-Regional Individual Chess Championship 2025 (U14 Open)	2025-07-11	2025-07-12	Standard	Amathole (EAL)	6	6	2.5	Yes	Analysis
5	Eastern Cape Inter-Regional Team Chess Championship 2025 (U14)	2025-07-10	2025-07-11	Standard	Amathole (EAL)	5	5	1	Yes	Analysis
6	NMBCU Closed 2025 (U14)	2025-06-13	2025-06-14	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
7	NMBCU Open 2025 (B)	2025-05-23	2025-05-24	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
8	NMBCU Trial 4 2025 (U14)	2025-05-09	2025-05-10	Standard	Nelson Mandela Bay (ENM)	6	6	1.5	Yes	Analysis
9	UCC Presidential Cup 2025 (B)	2025-04-08	2025-05-06	Standard	Nelson Mandela Bay (ENM)	5	2	1	Yes	Analysis
10	NMB 3rd Trials 2025 (U14)	2025-04-11	2025-04-12	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
11	NMB 2nd Trials 2025 (U14)	2025-03-07	2025-03-08	Standard	Nelson Mandela Bay (ENM)	6	6	2	Yes	Analysis
12	UCC Strategic Moves 2025 (B)	2025-02-28	2025-03-01	Standard	Nelson Mandela Bay (ENM)	5	5	2.5	Yes	Analysis
13	Uitenhage Chess Club Protea Cup 2025 (B)	2025-01-28	2025-02-25	Standard	Nelson Mandela Bay (ENM)	5	1	1	Yes	Analysis
14	NMBCH Trial 1 2025 (U14)	2025-02-14	2025-02-15	Standard	Nelson Mandela Bay (ENM)	6	6	2.5	Yes	Analysis
15	UCC Club Champs 2024 (B)	2024-10-08	2024-11-05	Standard	Nelson Mandela Bay (ENM)	5	1	0	Yes	Analysis
16	UCC Blitz July 2024 (B)	2024-07-30	2024-08-06	Rapid	Nelson Mandela Bay (ENM)	6	2	1	Yes	Analysis
17	Uitenhage Chess Club Presidential Cup 2024 (B)	2024-04-30	2024-05-14	Rapid	Nelson Mandela Bay (ENM)	6	5	1	Yes	Analysis

#	Games	Start				End
1	4	Tournament NMB 3rd Trials 2025				Tournament UCC Presidential Cup 2025
		date 2025-04-12	rnd 4	type Standard	result 0.5	date 2025-04-29	rnd 4	type Standard	result 1
		Opponent Hadi, S (Siphosobomi)				Opponent Hoogh, E (Ethan)
2	3	Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025				Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025
		date 2025-07-12	rnd 3	type Standard	result 0.5	date 2025-07-12	rnd 5	type Standard	result 1
		Opponent Groves, F (Felix)				Opponent Mandlana, A (Akuye)
3	2	Tournament UCC Mind Over Board 2025				Tournament UCC Mind Over Board 2025
		date 2025-08-03	rnd 4	type Standard	result 1	date 2025-08-03	rnd 5	type Standard	result 1
		Opponent Knoetze, M (Mila)				Opponent Coetzer, H (Hanroux)

#	Games	Start				End
1	4	Tournament NMB 3rd Trials 2025				Tournament UCC Presidential Cup 2025
		date 2025-04-12	rnd 4	type Standard	result 0.5	date 2025-04-29	rnd 4	type Standard	result 1
		Opponent Hadi, S (Siphosobomi)				Opponent Hoogh, E (Ethan)
2	3	Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025				Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025
		date 2025-07-12	rnd 3	type Standard	result 0.5	date 2025-07-12	rnd 5	type Standard	result 1
		Opponent Groves, F (Felix)				Opponent Mandlana, A (Akuye)
3	2	Tournament UCC Mind Over Board 2025				Tournament UCC Mind Over Board 2025
		date 2025-08-03	rnd 4	type Standard	result 1	date 2025-08-03	rnd 5	type Standard	result 1
		Opponent Knoetze, M (Mila)				Opponent Coetzer, H (Hanroux)

#	Games	Start				End
1	1	Tournament UCC Blitz July 2024				Tournament UCC Blitz July 2024
		date 2024-08-06	rnd 5	type Rapid	result 1	date 2024-08-06	rnd 5	type Rapid	result 1
		Opponent Coetzer, H (Hanroux)				Opponent Coetzer, H (Hanroux)
2	1	Tournament Uitenhage Chess Club Presidential Cup 2024				Tournament Uitenhage Chess Club Presidential Cup 2024
		date 2024-05-14	rnd 6	type Rapid	result 1	date 2024-05-14	rnd 6	type Rapid	result 1
		Opponent Terblanche, A (Andre)				Opponent Terblanche, A (Andre)

No games found.

#	Games	Start				End

#	Games	Start				End
1	3	Tournament NMB 3rd Trials 2025				Tournament UCC Presidential Cup 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-04-29	rnd 4	type Standard	result 1
		Opponent van Tonder, R (Rudolph)				Opponent Hoogh, E (Ethan)
2	2	Tournament UCC Mind Over Board 2025				Tournament UCC Mind Over Board 2025
		date 2025-08-03	rnd 4	type Standard	result 1	date 2025-08-03	rnd 5	type Standard	result 1
		Opponent Knoetze, M (Mila)				Opponent Coetzer, H (Hanroux)
3	2	Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025				Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025
		date 2025-07-12	rnd 4	type Standard	result 1	date 2025-07-12	rnd 5	type Standard	result 1
		Opponent Mbebe, L (Lwakhiwe)				Opponent Mandlana, A (Akuye)

#	Games	Start				End
1	3	Tournament NMB 3rd Trials 2025				Tournament UCC Presidential Cup 2025
		date 2025-04-12	rnd 5	type Standard	result 1	date 2025-04-29	rnd 4	type Standard	result 1
		Opponent van Tonder, R (Rudolph)				Opponent Hoogh, E (Ethan)
2	2	Tournament UCC Mind Over Board 2025				Tournament UCC Mind Over Board 2025
		date 2025-08-03	rnd 4	type Standard	result 1	date 2025-08-03	rnd 5	type Standard	result 1
		Opponent Knoetze, M (Mila)				Opponent Coetzer, H (Hanroux)
3	2	Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025				Tournament Eastern Cape Inter-Regional Individual Chess Championship 2025
		date 2025-07-12	rnd 4	type Standard	result 1	date 2025-07-12	rnd 5	type Standard	result 1
		Opponent Mbebe, L (Lwakhiwe)				Opponent Mandlana, A (Akuye)

#	Games	Start				End
1	1	Tournament UCC Blitz July 2024				Tournament UCC Blitz July 2024
		date 2024-08-06	rnd 5	type Rapid	result 1	date 2024-08-06	rnd 5	type Rapid	result 1
		Opponent Coetzer, H (Hanroux)				Opponent Coetzer, H (Hanroux)
2	1	Tournament Uitenhage Chess Club Presidential Cup 2024				Tournament Uitenhage Chess Club Presidential Cup 2024
		date 2024-05-14	rnd 6	type Rapid	result 1	date 2024-05-14	rnd 6	type Rapid	result 1
		Opponent Terblanche, A (Andre)				Opponent Terblanche, A (Andre)

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	Sonti ,K (Khwezi)	5	0	-425	5	0	-425	0	0	0	0	0	0
1	Sonti ,K (Khwezi)	5	1385.6	960.6	5	1378.7	960.6	0	0	0	0	0	0
2	Arries ,J (Jayde)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
2	Arries ,J (Jayde)	3	1482.6	1341	3	1481.4	1341	0	0	0	0	0	0
3	Sana ,E (Enzokuhle)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
3	Sana ,E (Enzokuhle)	3	1147.2	863.8	3	1156.8	863.8	0	0	0	0	0	0
4	Arbi ,I (Imaan)	3	2	141.7	3	2	141.7	0	0	0	0	0	0
4	Arbi ,I (Imaan)	3	1485	1626.6	3	1482.7	1626.6	0	0	0	0	0	0
5	Hoogh ,E (Ethan)	3	2	141.7	2	2	425	1	0	-425	0	0	0
5	Hoogh ,E (Ethan)	3	1100.9	1242.5	2	1099.8	1525.9	1	1046.6	675.9	0	0	0
6	Coetzer ,H (Hanroux)	3	3	425	2	2	425	1	1	425	0	0	0
6	Coetzer ,H (Hanroux)	3	1218.7	1643.7	2	1285.1	1643.7	1	1200	1643.7	0	0	0
7	George ,P (Panashe)	3	0	-425	2	0	-425	1	0	-425	0	0	0
7	George ,P (Panashe)	3	1389.7	964.7	2	1510.6	964.7	1	1231.7	964.7	0	0	0
8	Van Huyssteen ,N (Nathan)	2	1	0	2	1	0	0	0	0	0	0	0
8	Van Huyssteen ,N (Nathan)	2	1189.3	1189.3	2	1210.4	1189.3	0	0	0	0	0	0
9	Swartz ,J (Jane)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
9	Swartz ,J (Jane)	2	1367.1	1154.6	2	1354.6	1154.6	0	0	0	0	0	0
10	Prins ,J (Joshua)	2	0	-425	2	0	-425	0	0	0	0	0	0
10	Prins ,J (Joshua)	2	1333.4	908.4	2	1282.3	908.4	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

Bosch, R (Rayhaan)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms