Chess South Africa Ratings Database

PLAYER PAGE

Personal

De Beer, SJ (Stefanus)

Chess SA id

106055183

FIDE id

Date of birth

2006-07-03 (U20)

Gender

Male

Region

Bojanala Platina (NBR)

Citizen

RSA

Titles

Chess SA registered

Last active game

2021-11-13

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1280.8	1265.9	820.4	809.6
Raw rating	1280.8	1265.9	820.4	809.6
Weighted rating	1280.8	1265.9	820.3	809.6
Weighted performance	521.2	519.9	0	0
Floor	841.6	835.4	500	500
K-factor	36	36	40	40
Min/Max rating change allowed	147.8	151	284.8	289.2
Highest rating	1355.1 2020-02-01	1348.8 2020-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1341.6 2020-03-01	1335.4 2020-03-01	820.4 2024-02-01	809.6 2024-02-01
Highest weighted rating	1341.6 2021-11-01	1335.4 2021-11-01	820.4 2024-11-01	809.6 2024-11-01
Highest weighted performance	1355.1 2020-02-01	1348.8 2020-02-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1280.8	1265.9	820.4	809.6
Analysis
Rating	1280.8	1265.9	820.4	809.6
Raw rating	1280.8	1265.9	820.4	809.6
Weighted rating	1280.8	1265.9	820.3
Weighted performance	521.2	519.9	0
K-factor	36	36	40	40
Floor	841.6	835.4	500	500
Max/Min rating change allowed	147.8	151	284.8	289.2
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	1280.8	1265.9	820.4	809.6
New weighted rating	1280.8	1265.9	820.3	809.6
New weighted performance	520.8	519.4	0	0
Temp new rating	1280.8	1265.9	820.4	809.6
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1280.8	1265.9	820.4	809.6
New K-factor	36	36	40	40
New floor	841.6	835.4	500	500

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	0	0	0
	9	9	0
History	273	268	5

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Bojanala Platina (NBR)
Province	Northwest (NW)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U20	-1		-1		-1
U20 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	114	67	58.77	74.6	1043.4	1118
Standard	114	67	58.77	74.6	1043.4	1118
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1280.8	1265.9	820.4	809.6
2025-09-01	1280.8	1265.9	820.4	809.6
2025-08-01	1280.8	1265.9	820.4	809.6
2025-07-01	1280.8	1265.9	820.4	809.6
2025-06-01	1280.8	1265.9	820.4	809.6
2025-05-01	1280.8	1265.9	820.4	809.6
2025-04-01	1280.8	1265.9	820.4	809.6
2025-03-01	1280.8	1265.9	820.4	809.6
2025-02-01	1280.8	1265.9	820.4	809.6
2025-01-01	1280.8	1265.9	820.4	809.6
2024-12-01	1280.8	1265.9	820.4	809.6
2024-11-01	1280.8	1265.9	820.4	809.6
2024-10-01	1280.8	1265.9	820.4	809.6
2024-09-01	1280.8	1265.9	820.4	809.6
2024-08-01	1280.8	1265.9	820.4	809.6
2024-07-01	1280.8	1265.9	820.4	809.6
2024-06-01	1280.8	1265.9	820.4	809.6
2024-08-01	1280.8	1265.9	820.4	809.6
2024-04-01	1280.8	1265.9	820.4	809.6
2024-03-01	1280.8	1265.9	820.4	809.6
2024-02-01	1280.8	1265.9	820.4	809.6
2024-01-01	1280.8	1265.9	820.4	809.6
2023-12-01	1280.8	1265.9	809.6	809.6
2023-11-01	1280.8	1265.9	809.6	809.6

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	Bojanala SAJCC Trials - Session 2 of 3 2021 (A)	2021-11-13	2021-11-13	Standard	Bojanala Platina (NBR)	5	5	2	Yes	Analysis
2	Bojanala SAJCC Trials - Session 1 of 3 2021 (B)	2021-11-06	2021-11-06	Standard	Bojanala Platina (NBR)	5	4	0.5	Yes	Analysis
3	Hoerskool Brits Toernooi 2020 (U16)	2020-03-14	2020-03-14	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
4	Laerskool Proteapark 2020 (B)	2020-02-29	2020-02-29	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
5	Lebone II 2020 (U16)	2020-02-15	2020-02-15	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
6	2019 South African Junior Team Championships (U14B)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	3	Yes	Analysis
7	Inter Region 2019 (U14 Open)	2019-10-19	2019-10-19	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
8	Laerskool Brits 2019 (U14)	2019-08-31	2019-08-31	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
9	Inter Regional Chess Championship 2019 (U14)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
10	Laerskool Olienpark 2019 (U14)	2019-04-06	2019-04-06	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
11	Rustenburg Noord Primary Tournament 2019 (U14)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
12	Fields College Open 2019 (U14)	2019-02-02	2019-02-02	Standard	Bojanala Platina (NBR)	5	5	4	Yes	Analysis
13	Hoerskool Brits Tournament 2019 (U14)	2019-02-09	2019-02-09	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
14	South African Junior Team Championships 2018 (U14D)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	2.5	Yes	Analysis
15	Lebone II Chess 2018 (U14)	2018-09-01	2018-09-01	Standard	Cape Town (WCT)	5	5	3	Yes	Analysis
16	Laerskool Brits Tournament 2018 (U14)	2018-08-04	2018-08-04	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
17	Inter Regional 2018 (U14 Individual)	2018-05-04	2018-05-05	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
18	Laerskool Olienpark 2018 (U14)	2018-04-21	2018-04-21	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
19	Laerskool Rustenburg 2018 (B)	2018-03-24	2018-03-24	Standard	Bojanala Platina (NBR)	5	5	1	Yes	Analysis
20	Hoerskool Brits 2018 (U14)	2018-03-17	2018-03-17	Standard	Bojanala Platina (NBR)	5	5	3.5	Yes	Analysis
21	Laerskool Vastrap 2018 (U14)	2018-02-03	2018-02-03	Standard	Bojanala Platina (NBR)	5	5	3	Yes	Analysis
22	South African Junior Team Championships 2017 (U12C)	2018-01-04	2018-01-08	Standard	4 Knights (4K)	7	6	4	Yes	Analysis

#	Games	Start				End
1	9	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 1	type Standard	result 1	date 2020-02-29	rnd 4	type Standard	result 0.5
		Opponent Matshego, T (Tshiamo)				Opponent Volschenk, E (Ewalt)
2	5	Tournament Inter Region 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-19	rnd 4	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Mogorosi, K (Kgalalelo)				Opponent Kwon, Y (Yul)
3	4	Tournament Laerskool Brits 2019				Tournament Inter Region 2019
		date 2019-08-31	rnd 4	type Standard	result 1	date 2019-10-19	rnd 2	type Standard	result 1
		Opponent Alexander, L (Larona)				Opponent Redelinghuys, A (Alexander)

#	Games	Start				End
1	9	Tournament Lebone II 2020				Tournament Laerskool Proteapark 2020
		date 2020-02-15	rnd 1	type Standard	result 1	date 2020-02-29	rnd 4	type Standard	result 0.5
		Opponent Matshego, T (Tshiamo)				Opponent Volschenk, E (Ewalt)
2	5	Tournament Inter Region 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-19	rnd 4	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Mogorosi, K (Kgalalelo)				Opponent Kwon, Y (Yul)
3	4	Tournament Laerskool Brits 2019				Tournament Inter Region 2019
		date 2019-08-31	rnd 4	type Standard	result 1	date 2019-10-19	rnd 2	type Standard	result 1
		Opponent Alexander, L (Larona)				Opponent Redelinghuys, A (Alexander)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	5	Tournament Inter Region 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-19	rnd 4	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Mogorosi, K (Kgalalelo)				Opponent Kwon, Y (Yul)
2	4	Tournament Inter Regional Chess Championship 2019				Tournament Laerskool Brits 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-08-31	rnd 2	type Standard	result 1
		Opponent Khumalo, L (Lefa)				Opponent Fourie, G (Guillaume)
3	4	Tournament Rustenburg Noord Primary Tournament 2019				Tournament Laerskool Olienpark 2019
		date 2019-02-09	rnd 5	type Standard	result 1	date 2019-04-06	rnd 3	type Standard	result 1
		Opponent Prinsloo, DL (Derrick Loek)				Opponent Tlhage, MM (Molemo)

#	Games	Start				End
1	5	Tournament Inter Region 2019				Tournament 2019 South African Junior Team Championships
		date 2019-10-19	rnd 4	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Mogorosi, K (Kgalalelo)				Opponent Kwon, Y (Yul)
2	4	Tournament Inter Regional Chess Championship 2019				Tournament Laerskool Brits 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-08-31	rnd 2	type Standard	result 1
		Opponent Khumalo, L (Lefa)				Opponent Fourie, G (Guillaume)
3	4	Tournament Rustenburg Noord Primary Tournament 2019				Tournament Laerskool Olienpark 2019
		date 2019-02-09	rnd 5	type Standard	result 1	date 2019-04-06	rnd 3	type Standard	result 1
		Opponent Prinsloo, DL (Derrick Loek)				Opponent Tlhage, MM (Molemo)

No games found.

#	Games	Start				End

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	Tlhage ,MM (Molemo Mmatshwabi)	5	3	85	5	3	85	0	0	0	0	0	0
1	Tlhage ,MM (Molemo Mmatshwabi)	5	1241.7	1326.7	5	1235.5	1326.7	0	0	0	0	0	0
2	Janse Van Rensburg ,L (Ludik)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
2	Janse Van Rensburg ,L (Ludik)	4	1211	998.5	4	1205.5	998.5	0	0	0	0	0	0
3	Jordaan ,M (Monica)	4	1.5	-106.2	4	1.5	-106.2	0	0	0	0	0	0
3	Jordaan ,M (Monica)	4	1079.1	972.8	4	1083.4	972.8	0	0	0	0	0	0
4	Goliath ,BB (Brimarion Brushane)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
4	Goliath ,BB (Brimarion Brushane)	4	1205.9	993.4	4	1202.2	993.4	0	0	0	0	0	0
5	Masike ,O (Olerato)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
5	Masike ,O (Olerato)	3	1354.6	1212.9	3	1349.9	1212.9	0	0	0	0	0	0
6	Msemburi ,T (Theodore)	3	0.5	-283.3	3	0.5	-283.3	0	0	0	0	0	0
6	Msemburi ,T (Theodore)	3	1243.3	960	3	1241.1	960	0	0	0	0	0	0
7	Msingapantsi ,N (Ntsika)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
7	Msingapantsi ,N (Ntsika)	3	940	798.3	3	939.3	798.3	0	0	0	0	0	0
8	Alexander ,L (Larona)	2	2	425	2	2	425	0	0	0	0	0	0
8	Alexander ,L (Larona)	2	1216.7	1641.7	2	1216.6	1641.7	0	0	0	0	0	0
9	Mhlongo ,S (Siphesihle)	2	2	425	2	2	425	0	0	0	0	0	0
9	Mhlongo ,S (Siphesihle)	2	908.2	1333.2	2	901.2	1333.2	0	0	0	0	0	0
10	Molotsi ,O (Oabile)	2	2	425	2	2	425	0	0	0	0	0	0
10	Molotsi ,O (Oabile)	2	1122.2	1547.2	2	1117.1	1547.2	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

De Beer, SJ (Stefanus)

Ratings

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Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms