Chess South Africa Ratings Database

PLAYER PAGE

Personal

Foster, B (Bjorn)

Chess SA id

1150150111

FIDE id

Date of birth

2015-02-11 (U12)

Gender

Male

Region

Cape Town (WCT)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-18

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1288.9

Item	Main	Standard	Rapid	Blitz
Rating	1267.3	1256.2	1159.5	1200
Raw rating	1264.7	1245.4	1159.5	1200
Weighted rating	1267.3	1256.2	1159.5	1200
Weighted performance	1139.7	1134.6	0	0
Floor	835	826.1	723.2	700
K-factor	36	36	36	36
Min/Max rating change allowed	151.2	155.4	175.7	165.8
Highest rating	1335 2025-03-01	1326.1 2025-03-01	1296.5 2023-02-01	1200 2018-10-01
Highest raw rating	1335 2025-03-01	1326.1 2025-03-01	1223.2 2023-03-01	1200 2024-03-01
Highest weighted rating	1267.3 2025-11-01	1256.2 2025-11-01	1223.2 2023-05-01	1200 2018-10-01
Highest weighted performance	1335 2025-03-01	1326.1 2024-02-01	1296.5 2023-02-01	1200 2024-03-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	2	0.8	0	0
New rating	1269.3	1256.9	1159.5	1200
Analysis
Rating	1267.3	1256.2	1159.5	1200
Raw rating	1264.7	1245.4	1159.5	1200
Weighted rating	1267.3	1256.2	1159.5
Weighted performance	1139.7	1134.6	0
K-factor	36	36	36	36
Floor	835	826.1	723.2	700
Max/Min rating change allowed	151.2	155.4	175.7	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	1264.7	1245.4	1159.5	1200
New weighted rating	1269.3	1256.9	1159.5	1200
New weighted performance	1132.6	1127.6	0	0
Temp new rating	1269.3	1256.9	1159.5	1200
Temp new rating +/-	2	0.8	0	0
Final new rating +/-	2	0.8	0	0
New rating	1269.3	1256.9	1159.5	1200
New K-factor	36	36	36	36
New floor	835	826.1	723.2	700

Item	Main	Standard	Rapid
	0	0	0
	27	27	0
	34	34	0
	22	0	22
	0	0	0
	0	0	0
History	83	61	22

Games since
	Main 67	Standard 61		Rapid 6		Blitz 0
Gender	Male
Age group	U12
Region	Cape Town (WCT)
Province	Western Cape (WC)
Main
	RSA		Province		Region
Overall	3574		1182		473
Male	2748		864		371
U12	557		192		61
U12 Male	389		126		49
Standard
	RSA		Province		Region
Overall	3586		1022		425
Male	2756		724		320
U12	547		158		57
U12 Male	387		101		42
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U12	-1		-1		-1
U12 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	27	13	48.15	-15.7	1293.9	1278.1
Standard	27	13	48.15	-15.7	1293.9	1278.1
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	83	39.5	47.59	-20.5	1249.7	1229.2
Standard	61	30.5	50	0	1265.5	1265.5
Rapid	22	9	40.91	-77.3	1205.8	1128.6
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1264.7	1245.4	1159.5	1200
2025-09-30	1294.6	1276	1159.5	1200
2025-09-01	1294.6	1276	1159.5	1200
2025-08-01	1294.6	1276	1159.5	1200
2025-07-01	1294.6	1276	1159.5	1200
2025-06-01	1294.6	1276	1159.5	1200
2025-05-01	1294.6	1276	1159.5	1200
2025-04-01	1294.6	1276	1159.5	1200
2025-03-01	1335	1326.1	1159.5	1200
2025-02-01	1322.2	1311.5	1159.5	1200
2025-01-01	1261.7	1257.7	1159.5	1200
2024-12-01	1261.7	1257.7	1159.5	1200
2024-11-01	1261.7	1257.7	1159.5	1200
2024-10-01	1192.6	1193.6	1159.5	1200
2024-09-01	1218.9	1226	1159.5	1200
2024-08-01	1218.9	1226	1159.5	1200
2024-07-01	1153.2	1146.4	1159.5	1200
2024-09-01	1153.2	1146.4	1159.5	1200
2024-05-01	1153.2	1146.4	1159.5	1200
2024-04-01	1153.2	1146.4	1159.5	1200
2024-03-01	1226.4	1239.6	1159.5	1200
2024-02-01	1170.5	1200	1159.5	1200
2024-01-01	1170.5	1200	1159.5	1200
2023-12-01	1170.5	1200	1159.5	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	Grant East Annual Primary School Invitational Chess Tournament 2025 (U11 Boys)	2025-10-18	2025-10-18	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
2	CT Metro Schools Individual Closed 2025 (U11 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
3	De Hoop Primary Schools Teams Play-offs 2025 (U11)	2025-02-08	2025-02-08	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
4	CT Metro District East Schools Chess Individuals Trials 2025 (U11 Boys)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Helderberg Chess Club PS Development Tournament 2025 (U11 Boys)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Grant East Annual Primary School Invitational Chess Tournament 2025 (U11 Boys)	2025-10-18	2025-10-18	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
2	CT Metro Schools Individual Closed 2025 (U11 Open)	2025-03-01	2025-03-02	Standard	Cape Town (WCT)	6	6	2	Yes	Analysis
3	De Hoop Primary Schools Teams Play-offs 2025 (U11)	2025-02-08	2025-02-08	Standard	Cape Town (WCT)	5	5	2	Yes	Analysis
4	CT Metro District East Schools Chess Individuals Trials 2025 (U11 Boys)	2025-02-01	2025-02-02	Standard	Cape Town (WCT)	6	6	4	Yes	Analysis
5	Helderberg Chess Club PS Development Tournament 2025 (U11 Boys)	2025-01-25	2025-01-25	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
6	De Hoop Chess Championship Tournament 2024 (U9)	2024-10-12	2024-10-12	Standard	Cape Town (WCT)	5	4	2	Yes	Analysis
7	Grant East Annual Primary School Invitational Chess Tournament 2024 (U9)	2024-10-05	2024-10-05	Standard	Cape Town (WCT)	5	5	3.5	Yes	Analysis
8	Western Cape Top Schools Championship 2024 (U9 Mixed)	2024-08-30	2024-09-01	Standard	Eden (WEG)	6	4	1	Yes	Analysis
9	CT Metro District East Top Schools Chess 2024 (U9 Mixed)	2024-07-27	2024-07-28	Standard	Cape Town (WCT)	5	5	4.5	Yes	Analysis
10	Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys)	2024-03-02	2024-03-03	Standard	Cape Town (WCT)	6	6	0.5	Yes	Analysis
11	De Hoop Teams Play Offs 2023 (U9 Mixed)	2024-02-10	2024-02-10	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
12	CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys)	2024-02-03	2024-02-03	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
13	Grant East Primary School Invitational Chess Tournament 2023 (U9 Mixed)	2023-11-04	2023-11-04	Rapid	Cape Town (WCT)	6	6	3.5	Yes	Analysis
14	De Hoop Chess Championship 2023 (U8)	2023-10-14	2023-10-14	Rapid	Cape Town (WCT)	5	4	1	Yes	Analysis
15	CT Metro District East Top Schools Chess 2023 (U9 Mixed)	2023-07-29	2023-07-29	Rapid	Cape Town (WCT)	5	2	0	Yes	Analysis
16	Rhenish Primary Tournament 2023 (U10)	2023-05-13	2023-05-13	Rapid	Cape Winelands (WCW)	5	5	1.5	Yes	Analysis
17	De Hoop Teams Play Offs 2023 (U9 Mixed)	2023-02-11	2023-02-11	Rapid	Cape Town (WCT)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-03-03	rnd 6	type Standard	result 0.5	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Sonday, R (Rayyan)				Opponent Kwinana, S (Somila)
2	4	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament De Hoop Primary Schools Teams Play-offs 2025
		date 2025-02-02	rnd 4	type Standard	result 1	date 2025-02-08	rnd 1	type Standard	result 1
		Opponent Du Plooy, A (Alwin)				Opponent Van Schalkwyk, N (Nic)
3	4	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Abrahams, J (Juan)				Opponent Opperman, R (Ruwayne)

#	Games	Start				End
1	6	Tournament Cape Town Metro Schools Chess Closed Individuals 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-03-03	rnd 6	type Standard	result 0.5	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Sonday, R (Rayyan)				Opponent Kwinana, S (Somila)
2	4	Tournament CT Metro District East Schools Chess Individuals Trials 2025				Tournament De Hoop Primary Schools Teams Play-offs 2025
		date 2025-02-02	rnd 4	type Standard	result 1	date 2025-02-08	rnd 1	type Standard	result 1
		Opponent Du Plooy, A (Alwin)				Opponent Van Schalkwyk, N (Nic)
3	4	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Abrahams, J (Juan)				Opponent Opperman, R (Ruwayne)

#	Games	Start				End
1	3	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Grant East Primary School Invitational Chess Tournament 2023
		date 2023-11-04	rnd 4	type Rapid	result 1	date 2023-11-04	rnd 6	type Rapid	result 0.5
		Opponent Amoraal, S (Simeon)				Opponent Du Toit, N (Nayvin)
2	2	Tournament De Hoop Teams Play Offs 2023				Tournament De Hoop Teams Play Offs 2023
		date 2023-02-11	rnd 1	type Rapid	result 1	date 2023-02-11	rnd 2	type Rapid	result 1
		Opponent Potgieter, E (Ean)				Opponent Wantenaar, X (Xander)
3	1	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Grant East Primary School Invitational Chess Tournament 2023
		date 2023-11-04	rnd 1	type Rapid	result 1	date 2023-11-04	rnd 1	type Rapid	result 1
		Opponent Snyman, D (Daniel)				Opponent Snyman, D (Daniel)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Abrahams, J (Juan)				Opponent Opperman, R (Ruwayne)
2	3	Tournament CT Metro District East Top Schools Chess 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-07-27	rnd 3	type Standard	result 1	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Keeling, K (Keagan)				Opponent Kwinana, S (Somila)
3	2	Tournament De Hoop Chess Championship Tournament 2024				Tournament Helderberg Chess Club PS Development Tournament 2025
		date 2024-10-12	rnd 5	type Standard	result 1	date 2025-01-25	rnd 1	type Standard	result 1
		Opponent Armstrong, N (Noah)				Opponent Stewart, N (Neil)

#	Games	Start				End
1	4	Tournament Helderberg Chess Club PS Development Tournament 2025				Tournament CT Metro District East Schools Chess Individuals Trials 2025
		date 2025-01-25	rnd 4	type Standard	result 1	date 2025-02-01	rnd 2	type Standard	result 1
		Opponent Abrahams, J (Juan)				Opponent Opperman, R (Ruwayne)
2	3	Tournament CT Metro District East Top Schools Chess 2024				Tournament CT Metro District East Top Schools Chess 2024
		date 2024-07-27	rnd 3	type Standard	result 1	date 2024-07-28	rnd 5	type Standard	result 1
		Opponent Keeling, K (Keagan)				Opponent Kwinana, S (Somila)
3	2	Tournament De Hoop Chess Championship Tournament 2024				Tournament Helderberg Chess Club PS Development Tournament 2025
		date 2024-10-12	rnd 5	type Standard	result 1	date 2025-01-25	rnd 1	type Standard	result 1
		Opponent Armstrong, N (Noah)				Opponent Stewart, N (Neil)

#	Games	Start				End
1	2	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Grant East Primary School Invitational Chess Tournament 2023
		date 2023-11-04	rnd 4	type Rapid	result 1	date 2023-11-04	rnd 5	type Rapid	result 1
		Opponent Amoraal, S (Simeon)				Opponent Lin, J (Junming)
2	2	Tournament De Hoop Teams Play Offs 2023				Tournament De Hoop Teams Play Offs 2023
		date 2023-02-11	rnd 1	type Rapid	result 1	date 2023-02-11	rnd 2	type Rapid	result 1
		Opponent Potgieter, E (Ean)				Opponent Wantenaar, X (Xander)
3	1	Tournament Grant East Primary School Invitational Chess Tournament 2023				Tournament Grant East Primary School Invitational Chess Tournament 2023
		date 2023-11-04	rnd 1	type Rapid	result 1	date 2023-11-04	rnd 1	type Rapid	result 1
		Opponent Snyman, D (Daniel)				Opponent Snyman, D (Daniel)

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	Fourie ,S (Steph)	5	0.5	-340	3	0.5	-283.3	2	0	-425	0	0	0
1	Fourie ,S (Steph)	5	1336.9	996.9	3	1380.1	1053.6	2	1235.8	911.9	0	0	0
2	Burnett ,T (Tomas)	4	1	-212.5	2	0	-425	2	1	0	0	0	0
2	Burnett ,T (Tomas)	4	1257.8	1045.3	2	1279.1	832.8	2	1216.8	1257.8	0	0	0
3	Marais ,A (Alexander)	3	0	-425	2	0	-425	1	0	-425	0	0	0
3	Marais ,A (Alexander)	3	1368.7	943.7	2	1343.8	943.7	1	1288.6	943.7	0	0	0
4	Koen ,G (Gustav)	3	0.5	-283.3	2	0.5	-212.5	1	0	-425	0	0	0
4	Koen ,G (Gustav)	3	1266.6	983.3	2	1257.6	1054.1	1	1200	841.6	0	0	0
5	Lourens ,S (Simeon Juda)	2	1	0	2	1	0	0	0	0	0	0	0
5	Lourens ,S (Simeon Juda)	2	1302.7	1302.7	2	1257	1302.7	0	0	0	0	0	0
6	Pfukwa ,R (Rujeko)	2	0.5	-212.5	1	0.5	0	1	0	-425	0	0	0
6	Pfukwa ,R (Rujeko)	2	1313.3	1100.8	1	1422.7	1313.3	1	1199.2	888.3	0	0	0
7	Lin ,J (Junming)	2	2	425	1	1	425	1	1	425	0	0	0
7	Lin ,J (Junming)	2	1186.1	1611.1	1	1200	1611.1	1	1120	1611.1	0	0	0
8	Amoraal ,S (Simeon)	2	2	425	1	1	425	1	1	425	0	0	0
8	Amoraal ,S (Simeon)	2	1178.4	1603.4	1	1188.7	1603.4	1	1185.2	1603.4	0	0	0
9	Stoffels ,C (Connor)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Stoffels ,C (Connor)	1	1469.5	1044.5	1	1466.6	1044.5	0	0	0	0	0	0
10	Kroukamp ,A (Adam)	1	1	425	1	1	425	0	0	0	0	0	0
10	Kroukamp ,A (Adam)	1	1204.5	1629.5	1	1203.6	1629.5	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

Foster, B (Bjorn)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms