Chess South Africa Ratings Database

PLAYER PAGE

Personal

Kiewiet, B (B Jay)

Chess SA id

1090130785

FIDE id

Date of birth

2009-12-23 (U18)

Gender

Male

Region

Eden (WEG)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-08-02

Personal details last changed

1900-01-01

Junior GPX Games

31.3

Junior GPX Points

1253.1

Item	Main	Standard	Rapid	Blitz
Rating	1405.8	1398.8	1310.6	1200
Raw rating	1405.8	1377.4	1310.6	1200
Weighted rating	1402.8	1398.8	1270.7	1200
Weighted performance	1294.4	1175.2	0	0
Floor	944.9	977.9	810.6	700
K-factor	32	32	36	36
Min/Max rating change allowed	123.7	128.8	141.6	165.8
Highest rating	1444.9 2024-09-01	1477.9 2024-09-01	1407.2 2022-10-01	1200 2018-10-01
Highest raw rating	1444.9 2024-09-01	1477.9 2024-09-01	1310.6 2025-06-01	1200 2024-02-01
Highest weighted rating	1444.9 2025-04-01	1477.9 2025-04-01	1262.2 2025-08-01	1200 2018-10-01
Highest weighted performance	1363.7 2025-04-01	1343.9 2023-03-01	1407.2 2022-10-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	-0.8	0	0
New rating	1405.8	1398	1310.6	1200
Analysis
Rating	1405.8	1398.8	1310.6	1200
Raw rating	1405.8	1377.4	1310.6	1200
Weighted rating	1402.8	1398.8	1270.7
Weighted performance	1294.4	1175.2	0
K-factor	32	32	36	36
Floor	944.9	977.9	810.6	700
Max/Min rating change allowed	123.7	128.8	141.6	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	1405.8	1377.4	1310.6	1200
New weighted rating	1404.1	1398	1274.7	1200
New weighted performance	1294	1174.8	0	0
Temp new rating	1405.8	1398	1310.6	1200
Temp new rating +/-	0	-0.8	0	0
Final new rating +/-	0	-0.8	0	0
New rating	1405.8	1398	1310.6	1200
New K-factor	32	32	36	36
New floor	944.9	977.9	810.6	700

Item	Main	Standard	Rapid
	0	0	0
	36	29	7
	31	25	6
	21	21	0
	26	21	5
	0	0	0
History	128	110	18

Games since
	Main 67	Standard 54		Rapid 13		Blitz 0
Gender	Male
Age group	U18
Region	Eden (WEG)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	2097		635		167
Male	1729		498		133
U18	340		104		23
U18 Male	290		85		19
Standard
	RSA		Province		Region
Overall	2064		564		167
Male	1689		435		130
U18	347		89		21
U18 Male	300		72		17
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	36	18.5	51.39	11.8	1353.1	1364.9
Standard	29	13.5	46.55	-29.3	1297.1	1267.8
Rapid	7	5	71.43	182.1	1585.4	1767.5
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	128	71	55.47	46.5	1326.9	1373.4
Standard	110	59	53.64	30.9	1312.9	1343.8
Rapid	18	12	66.67	141.7	1412.4	1554.1
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1405.8	1377.4	1310.6	1200
2025-09-01	1405.8	1377.4	1310.6	1200
2025-08-01	1426.4	1399.6	1310.6	1200
2025-07-01	1426.4	1397.8	1310.6	1200
2025-06-01	1426.4	1395.4	1310.6	1200
2025-05-01	1380.6	1387.1	1248.1	1200
2025-04-01	1408.9	1420.9	1248.1	1200
2025-03-01	1382	1387	1248.1	1200
2025-02-01	1393.4	1404.6	1248	1200
2025-01-01	1393.4	1404.6	1246.1	1200
2024-12-01	1393.4	1404.6	1246.1	1200
2024-11-01	1393.4	1404.6	1246.1	1200
2024-10-01	1393.4	1404.6	1246.1	1200
2024-09-01	1444.9	1477.9	1246.1	1200
2024-08-01	1414.4	1446.9	1246.1	1200
2024-07-01	1414.4	1446.9	1246.1	1200
2024-06-01	1438.7	1446.9	1250.4	1200
2024-08-01	1438.7	1446.9	1250.4	1200
2024-04-01	1338.6	1324.9	1250.4	1200
2024-03-01	1327.5	1308	1250.4	1200
2024-02-01	1327.5	1308	1250.4	1200
2024-01-01	1327.5	1308	1250.4	1200
2023-12-01	1327.5	1308	1250.4	1200
2023-11-01	1327.5	1308	1250.4	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	Mossel Bay Top Schools 2025 (U18 Open)	2025-08-02	2025-08-02	Standard	Eden (WEG)	5	4	2.5	Yes	Analysis
2	Southern Knights Rapid 2025 (B)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U17 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	1	Yes	Analysis
4	Eden Chess Trials 2 2025 (U18)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	9	3.5	Yes	Analysis
5	Eden Schools Chess Trials 1 2025 (U17 Boys)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
6	Mossel Bay Schools Trials 2 2025 (U17 Boys)	2025-02-22	2025-02-22	Standard	Eden (WEG)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Mossel Bay Top Schools 2025 (U18 Open)	2025-08-02	2025-08-02	Standard	Eden (WEG)	5	4	2.5	Yes	Analysis
2	Southern Knights Rapid 2025 (B)	2025-05-03	2025-05-03	Rapid	Eden (WEG)	7	7	5	Yes	Analysis
3	Western Cape Schools Individual Championship 2025 (U17 Boys)	2025-04-26	2025-04-27	Standard	West Coast (WCU)	6	6	1	Yes	Analysis
4	Eden Chess Trials 2 2025 (U18)	2025-03-15	2025-04-12	Standard	Eden (WEG)	10	9	3.5	Yes	Analysis
5	Eden Schools Chess Trials 1 2025 (U17 Boys)	2025-03-08	2025-03-08	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
6	Mossel Bay Schools Trials 2 2025 (U17 Boys)	2025-02-22	2025-02-22	Standard	Eden (WEG)	5	5	3	Yes	Analysis
7	Western Cape Top Schools Championship 2024 (U18 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	5	1	Yes	Analysis
8	Eden Top Schools 2024 (U18 Open)	2024-08-17	2024-08-17	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
9	Western Cape - Brian Raubenheimer Development Tournament 2024 (U15 Boys)	2024-06-08	2024-06-08	Rapid	Overberg (WOS)	6	6	3	Yes	Analysis
10	Eden Chess Trials 2 2024 (U16)	2024-04-13	2024-04-20	Standard	Eden (WEG)	10	10	7	Yes	Analysis
11	Eden School Chess Trials 1 2024 (U15 Boys)	2024-03-09	2024-03-09	Standard	Eden (WEG)	5	5	3	Yes	Analysis
12	Eden Trials 2+3 2023 (U16)	2023-04-15	2023-05-13	Standard	Eden (WEG)	10	0	0	No	Analysis
13	Western Cape HS Individuals 2023 (U15 Boys)	2023-04-01	2023-04-02	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
14	Eden Trails 1 2023 (U15 Boys)	2023-03-11	2023-03-11	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis
15	Mossel Bay Schools Trials 2 2023 (U15 Boys)	2023-02-18	2023-02-18	Standard	Eden (WEG)	5	5	3	Yes	Analysis
16	Mossel Bay Schools Trials 1 2023 (U15 Boys)	2023-01-28	2023-01-28	Standard	Eden (WEG)	5	5	3	Yes	Analysis
17	Mossel Bay Open 2022 (C)	2022-10-01	2022-10-01	Rapid	Eden (WEG)	5	5	4	Yes	Analysis
18	Eden Topskole 2022 (O13 Ope)	2022-08-13	2022-08-13	Standard	Eden (WEG)	5	5	1	Yes	Analysis
19	Western Cape Schools 2022 (U13 Boys)	2022-05-28	2022-05-29	Standard	Cape Winelands (WCW)	6	6	3	Yes	Analysis
20	Eden Proewe 2 2022 (O13 Seuns)	2022-04-09	2022-04-09	Standard	Eden (WEG)	5	5	3	Yes	Analysis
21	Eden Proewe 1 2022 (O13 Seuns)	2022-03-12	2022-03-12	Standard	Eden (WEG)	5	5	4	Yes	Analysis
22	Eden Schools Closed Trials 1 2020 (U11 Boys)	2020-03-07	2020-03-07	Standard	Eden (WEG)	5	4	2	Yes	Analysis
23	Mossel Bay Trials 2 2020 (U11)	2020-02-15	2020-02-15	Standard	Eden (WEG)	5	5	3	Yes	Analysis
24	Mossel Bay Trials 1 2020 (U11)	2020-02-01	2020-02-01	Standard	Eden (WEG)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	6	Tournament Mossel Bay Schools Trials 2 2025				Tournament Eden Schools Chess Trials 1 2025
		date 2025-02-22	rnd 2	type Standard	result 0.5	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Holl, M (Markus)				Opponent Lombaard, R (Rhaylin)
2	6	Tournament Eden School Chess Trials 1 2024				Tournament Eden Chess Trials 2 2024
		date 2024-03-09	rnd 5	type Standard	result 1	date 2024-04-13	rnd 5	type Standard	result 1
		Opponent Brandt, I (Isahah)				Opponent Muller, K (Kieran)
3	4	Tournament Southern Knights Rapid 2025				Tournament Mossel Bay Top Schools 2025
		date 2025-05-03	rnd 7	type Rapid	result 1	date 2025-08-02	rnd 3	type Standard	result 1
		Opponent Francis, A (Aaron)				Opponent Stembok, E (Embrose)

#	Games	Start				End
1	6	Tournament Mossel Bay Schools Trials 2 2025				Tournament Eden Schools Chess Trials 1 2025
		date 2025-02-22	rnd 2	type Standard	result 0.5	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Holl, M (Markus)				Opponent Lombaard, R (Rhaylin)
2	6	Tournament Eden School Chess Trials 1 2024				Tournament Eden Chess Trials 2 2024
		date 2024-03-09	rnd 5	type Standard	result 1	date 2024-04-13	rnd 5	type Standard	result 1
		Opponent Brandt, I (Isahah)				Opponent Muller, K (Kieran)
3	4	Tournament Eden Proewe 1 2022				Tournament Eden Proewe 2 2022
		date 2022-03-12	rnd 4	type Standard	result 1	date 2022-04-09	rnd 2	type Standard	result 1
		Opponent Fourie, X (Xander)				Opponent Michaels, B (Bernard)

#	Games	Start				End
1	4	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 4	type Rapid	result 1
		Opponent Kuyler, L (Luzandri)				Opponent Hone, R (Ryan)
2	4	Tournament Mossel Bay Open 2022				Tournament Mossel Bay Open 2022
		date 2022-10-01	rnd 1	type Rapid	result 1	date 2022-10-01	rnd 4	type Rapid	result 1
		Opponent Du Preez, A (Alet)				Opponent Blignaut, DC (Dane Chelsea)
3	3	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 2	type Rapid	result 1	date 2024-06-08	rnd 4	type Rapid	result 1
		Opponent Adams, E (El-Linio)				Opponent Michaels, J (Joshua)

No games found.

#	Games	Start				End

#	Games	Start				End
1	6	Tournament Eden School Chess Trials 1 2024				Tournament Eden Chess Trials 2 2024
		date 2024-03-09	rnd 5	type Standard	result 1	date 2024-04-13	rnd 5	type Standard	result 1
		Opponent Brandt, I (Isahah)				Opponent Muller, K (Kieran)
2	4	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 4	type Rapid	result 1
		Opponent Kuyler, L (Luzandri)				Opponent Hone, R (Ryan)
3	4	Tournament Mossel Bay Schools Trials 2 2025				Tournament Eden Schools Chess Trials 1 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Rugadza, S (Sidie)				Opponent Lombaard, R (Rhaylin)

#	Games	Start				End
1	6	Tournament Eden School Chess Trials 1 2024				Tournament Eden Chess Trials 2 2024
		date 2024-03-09	rnd 5	type Standard	result 1	date 2024-04-13	rnd 5	type Standard	result 1
		Opponent Brandt, I (Isahah)				Opponent Muller, K (Kieran)
2	4	Tournament Mossel Bay Schools Trials 2 2025				Tournament Eden Schools Chess Trials 1 2025
		date 2025-02-22	rnd 4	type Standard	result 1	date 2025-03-08	rnd 2	type Standard	result 1
		Opponent Rugadza, S (Sidie)				Opponent Lombaard, R (Rhaylin)
3	4	Tournament Eden Proewe 1 2022				Tournament Eden Proewe 2 2022
		date 2022-03-12	rnd 4	type Standard	result 1	date 2022-04-09	rnd 2	type Standard	result 1
		Opponent Fourie, X (Xander)				Opponent Michaels, B (Bernard)

#	Games	Start				End
1	4	Tournament Southern Knights Rapid 2025				Tournament Southern Knights Rapid 2025
		date 2025-05-03	rnd 1	type Rapid	result 1	date 2025-05-03	rnd 4	type Rapid	result 1
		Opponent Kuyler, L (Luzandri)				Opponent Hone, R (Ryan)
2	4	Tournament Mossel Bay Open 2022				Tournament Mossel Bay Open 2022
		date 2022-10-01	rnd 1	type Rapid	result 1	date 2022-10-01	rnd 4	type Rapid	result 1
		Opponent Du Preez, A (Alet)				Opponent Blignaut, DC (Dane Chelsea)
3	3	Tournament Western Cape - Brian Raubenheimer Development Tournament 2024				Tournament Western Cape - Brian Raubenheimer Development Tournament 2024
		date 2024-06-08	rnd 2	type Rapid	result 1	date 2024-06-08	rnd 4	type Rapid	result 1
		Opponent Adams, E (El-Linio)				Opponent Michaels, J (Joshua)

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	Hone ,R (Ryan)	6	1	-283.3	5	0	-425	1	1	425	0	0	0
1	Hone ,R (Ryan)	6	1623.8	1340.4	5	1608.5	1198.8	1	1436.5	2048.8	0	0	0
2	Claassen ,M (Mervin)	5	3	85	5	3	85	0	0	0	0	0	0
2	Claassen ,M (Mervin)	5	1415.2	1500.2	5	1429.8	1500.2	0	0	0	0	0	0
3	Bredenkamp ,J (Jaydon)	4	0	-425	4	0	-425	0	0	0	0	0	0
3	Bredenkamp ,J (Jaydon)	4	1297.8	872.8	4	1304	872.8	0	0	0	0	0	0
4	Scholtz ,H (Hanko)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Scholtz ,H (Hanko)	2	1606.8	1181.8	2	1598.8	1181.8	0	0	0	0	0	0
5	Harris ,E (Emerique)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
5	Harris ,E (Emerique)	2	1282.6	1070.1	2	1274.2	1070.1	0	0	0	0	0	0
6	Petersen ,J (Jordan-Ray)	2	2	425	2	2	425	0	0	0	0	0	0
6	Petersen ,J (Jordan-Ray)	2	1199.2	1624.2	2	1197.8	1624.2	0	0	0	0	0	0
7	Prins ,R (Reinhart)	2	0	-425	2	0	-425	0	0	0	0	0	0
7	Prins ,R (Reinhart)	2	1516.7	1091.7	2	1511.8	1091.7	0	0	0	0	0	0
8	Muller ,K (Kieran)	2	1	0	2	1	0	0	0	0	0	0	0
8	Muller ,K (Kieran)	2	1393.2	1393.2	2	1379.6	1393.2	0	0	0	0	0	0
9	Swartz ,T (Tayrese)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
9	Swartz ,T (Tayrese)	2	1198.2	1410.8	2	1197.8	1410.8	0	0	0	0	0	0
10	Rugadza ,S (Sidie)	2	2	425	2	2	425	0	0	0	0	0	0
10	Rugadza ,S (Sidie)	2	1177.2	1602.2	2	1173.4	1602.2	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Kiewiet, B (B Jay)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms