Chess South Africa Ratings Database

PLAYER PAGE

Personal

Ebersohn, D (Dewald)

Chess SA id

1080308703

FIDE id

Date of birth

2008-11-08 (U18)

Gender

Male

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-11

Personal details last changed

1900-01-01

Junior GPX Games

40.1

Junior GPX Points

1350.5

Item	Main	Standard	Rapid	Blitz
Rating	1329.4	1312.4	1238	1200
Raw rating	1329.4	1312.4	1238	1200
Weighted rating	1299.1	1298.8	1233	1200
Weighted performance	1283.5	1259.2	0	0
Floor	877.8	884.4	741.6	700
K-factor	36	36	36	36
Min/Max rating change allowed	137.9	141.3	157.1	165.8
Highest rating	1377.8 2025-09-01	1384.4 2025-09-01	1371.2 2024-08-01	1200 2024-10-01
Highest raw rating	1377.8 2025-09-01	1384.4 2025-09-01	1241.6 2024-10-01	1200 2024-10-01
Highest weighted rating	1299.1 2025-11-01	1298.8 2025-11-01	1241.6 2024-10-01	1200 2024-10-01
Highest weighted performance	1364.7 2025-09-01	1353.7 2025-09-01	1371.2 2024-08-01	1200 2024-10-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1329.4	1312.4	1238	1200
Analysis
Rating	1329.4	1312.4	1238	1200
Raw rating	1329.4	1312.4	1238	1200
Weighted rating	1299.1	1298.8	1233
Weighted performance	1283.5	1259.2	0
K-factor	36	36	36	36
Floor	877.8	884.4	741.6	700
Max/Min rating change allowed	137.9	141.3	157.1	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	1329.4	1312.4	1238	1200
New weighted rating	1304.1	1302.5	1234.1	1200
New weighted performance	1275.7	1251.6	0	0
Temp new rating	1329.4	1312.4	1238	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1329.4	1312.4	1238	1200
New K-factor	36	36	36	36
New floor	877.8	884.4	741.6	700

Item	Main	Standard	Rapid
	0	0	0
	31	27	4
	16	11	5
	0	0	0
	0	0	0
	0	0	0
History	47	38	9

Games since
	Main 47	Standard 38		Rapid 9		Blitz 0
Gender	Male
Age group	U18
Region	Mangaung (FMB)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	2966		43		32
Male	2344		38		27
U18	453		12		10
U18 Male	376		11		9
Standard
	RSA		Province		Region
Overall	3059		39		25
Male	2414		32		20
U18	486		12		9
U18 Male	409		11		8
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	31	14.5	46.77	-27.4	1350	1322.6
Standard	27	13.5	50	0	1333.7	1333.7
Rapid	4	1	25	-212.5	1459.9	1247.4
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	47	27	57.45	63.3	1304.1	1367.4
Standard	38	22.5	59.21	78.3	1302.9	1381.2
Rapid	9	4.5	50	0	1309.2	1309.2
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1329.4	1312.4	1238	1200
2025-09-30	1377.8	1380.8	1238	1200
2025-09-01	1377.8	1384.4	1238	1200
2025-08-01	1354.1	1362.2	1238	1200
2025-07-01	1354.1	1362.2	1238	1200
2025-06-01	1354.1	1362.2	1238	1200
2025-05-01	1252.2	1246.3	1238	1200
2025-04-01	1252.2	1246.3	1238	1200
2025-03-01	1312.4	1323.2	1238	1200
2025-02-01	1312.4	1323.2	1238	1200
2025-01-01	1320.3	1323.2	1241.6	1200
2024-12-01	1320.3	1323.2	1241.6	1200
2024-11-01	1240.5	1218.4	1241.6	1200
2024-10-01	1215.1	1200	1241.6	1200
2024-09-01	1215.1	1200	1241.6	1200
2024-08-01	1200	1200	1200	1200
2024-07-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	1200
2024-05-01	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

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	11th Piet van Zyl Chess Festival 2025 (A)	2025-10-10	2025-10-11	Standard	Mangaung (FMB)	5	5	0.5	Yes	Analysis
2	Bloemfontein Highchool Chess Teams Aug 2025	2025-07-26	2025-09-06	Standard	Mangaung (FMB)	6	3	2	Yes	Analysis
3	Free State Closed 2025 (U18 Open)	2025-08-14	2025-08-15	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
4	Spartan Bishops Championships Warriors 2025 (U18)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
5	Mangaung Metro Chess 9-10 May 2025 (B)	2025-05-09	2025-05-10	Standard	Mangaung (FMB)	5	5	4.5	Yes	Analysis
6	Mangaung Metro Chess 7-8 March 2025 (A)	2025-03-07	2025-03-08	Standard	Mangaung (FMB)	5	4	0	Yes	Analysis
7	Mangaung Metro Chess 25 January 2025 (A)	2025-01-25	2025-01-25	Rapid	Mangaung (FMB)	5	4	1	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	11th Piet van Zyl Chess Festival 2025 (A)	2025-10-10	2025-10-11	Standard	Mangaung (FMB)	5	5	0.5	Yes	Analysis
2	Bloemfontein Highchool Chess Teams Aug 2025	2025-07-26	2025-09-06	Standard	Mangaung (FMB)	6	3	2	Yes	Analysis
3	Free State Closed 2025 (U18 Open)	2025-08-14	2025-08-15	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
4	Spartan Bishops Championships Warriors 2025 (U18)	2025-05-23	2025-05-25	Standard	Frances Baard (NCF)	5	5	3.5	Yes	Analysis
5	Mangaung Metro Chess 9-10 May 2025 (B)	2025-05-09	2025-05-10	Standard	Mangaung (FMB)	5	5	4.5	Yes	Analysis
6	Mangaung Metro Chess 7-8 March 2025 (A)	2025-03-07	2025-03-08	Standard	Mangaung (FMB)	5	4	0	Yes	Analysis
7	Mangaung Metro Chess 25 January 2025 (A)	2025-01-25	2025-01-25	Rapid	Mangaung (FMB)	5	4	1	Yes	Analysis
8	Paarl Boys' High Chess Festival 2024 (C)	2024-10-04	2024-10-05	Standard	Cape Winelands (WCW)	6	6	6	Yes	Analysis
9	Mangaung Metro Chess 11-12 October 2024 (B)	2024-10-11	2024-10-12	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
10	Bloemfontein Highschool League 02 Aug 2024 (U17A)	2024-08-02	2024-08-02	Rapid	Mangaung (FMB)	5	5	3.5	Yes	Analysis

#	Games	Start				End
1	10	Tournament Bloemfontein Highschool League 02 Aug 2024				Tournament Mangaung Metro Chess 11-12 October 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-10-11	rnd 1	type Standard	result 1
		Opponent Coetzer, L (Louis)				Opponent Khoete, B (Bokang)
2	8	Tournament Mangaung Metro Chess 9-10 May 2025				Tournament Spartan Bishops Championships Warriors 2025
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-24	rnd 3	type Standard	result 0.5
		Opponent Moletsane, T (Tshimologo)				Opponent Whyte, W (Wyatt)
3	3	Tournament Spartan Bishops Championships Warriors 2025				Tournament Free State Closed 2025
		date 2025-05-25	rnd 5	type Standard	result 1	date 2025-08-14	rnd 2	type Standard	result 1
		Opponent Nel, C (Caleb)				Opponent Mtolo, S (Sibusiso)

#	Games	Start				End
1	8	Tournament Mangaung Metro Chess 9-10 May 2025				Tournament Spartan Bishops Championships Warriors 2025
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-24	rnd 3	type Standard	result 0.5
		Opponent Moletsane, T (Tshimologo)				Opponent Whyte, W (Wyatt)
2	7	Tournament Paarl Boys' High Chess Festival 2024				Tournament Mangaung Metro Chess 11-12 October 2024
		date 2024-10-04	rnd 1	type Standard	result 1	date 2024-10-11	rnd 1	type Standard	result 1
		Opponent Barnard, J (Joseph Mays)				Opponent Khoete, B (Bokang)
3	3	Tournament Spartan Bishops Championships Warriors 2025				Tournament Free State Closed 2025
		date 2025-05-25	rnd 5	type Standard	result 1	date 2025-08-14	rnd 2	type Standard	result 1
		Opponent Nel, C (Caleb)				Opponent Mtolo, S (Sibusiso)

#	Games	Start				End
1	3	Tournament Bloemfontein Highschool League 02 Aug 2024				Tournament Bloemfontein Highschool League 02 Aug 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-08-02	rnd 5	type Rapid	result 0.5
		Opponent Coetzer, L (Louis)				Opponent Raphoko, S (Sebabotso)
2	1	Tournament Mangaung Metro Chess 25 January 2025				Tournament Mangaung Metro Chess 25 January 2025
		date 2025-01-25	rnd 4	type Rapid	result 1	date 2025-01-25	rnd 4	type Rapid	result 1
		Opponent Mclachlan, J (James)				Opponent Mclachlan, J (James)
3	1	Tournament Bloemfontein Highschool League 02 Aug 2024				Tournament Bloemfontein Highschool League 02 Aug 2024
		date 2024-08-02	rnd 1	type Rapid	result 1	date 2024-08-02	rnd 1	type Rapid	result 1
		Opponent Dell, K (Kaleb)				Opponent Dell, K (Kaleb)

No games found.

#	Games	Start				End

#	Games	Start				End
1	7	Tournament Paarl Boys' High Chess Festival 2024				Tournament Mangaung Metro Chess 11-12 October 2024
		date 2024-10-04	rnd 1	type Standard	result 1	date 2024-10-11	rnd 1	type Standard	result 1
		Opponent Barnard, J (Joseph Mays)				Opponent Khoete, B (Bokang)
2	4	Tournament Mangaung Metro Chess 9-10 May 2025				Tournament Mangaung Metro Chess 9-10 May 2025
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Moletsane, T (Tshimologo)				Opponent Du Toit, C (Calem)
3	3	Tournament Spartan Bishops Championships Warriors 2025				Tournament Free State Closed 2025
		date 2025-05-25	rnd 5	type Standard	result 1	date 2025-08-14	rnd 2	type Standard	result 1
		Opponent Nel, C (Caleb)				Opponent Mtolo, S (Sibusiso)

#	Games	Start				End
1	7	Tournament Paarl Boys' High Chess Festival 2024				Tournament Mangaung Metro Chess 11-12 October 2024
		date 2024-10-04	rnd 1	type Standard	result 1	date 2024-10-11	rnd 1	type Standard	result 1
		Opponent Barnard, J (Joseph Mays)				Opponent Khoete, B (Bokang)
2	4	Tournament Mangaung Metro Chess 9-10 May 2025				Tournament Mangaung Metro Chess 9-10 May 2025
		date 2025-05-09	rnd 1	type Standard	result 1	date 2025-05-10	rnd 4	type Standard	result 1
		Opponent Moletsane, T (Tshimologo)				Opponent Du Toit, C (Calem)
3	3	Tournament Spartan Bishops Championships Warriors 2025				Tournament Free State Closed 2025
		date 2025-05-25	rnd 5	type Standard	result 1	date 2025-08-14	rnd 2	type Standard	result 1
		Opponent Nel, C (Caleb)				Opponent Mtolo, S (Sibusiso)

#	Games	Start				End
1	2	Tournament Bloemfontein Highschool League 02 Aug 2024				Tournament Bloemfontein Highschool League 02 Aug 2024
		date 2024-08-02	rnd 3	type Rapid	result 1	date 2024-08-02	rnd 4	type Rapid	result 1
		Opponent Coetzer, L (Louis)				Opponent Sesele, R (Reudean)
2	1	Tournament Mangaung Metro Chess 25 January 2025				Tournament Mangaung Metro Chess 25 January 2025
		date 2025-01-25	rnd 4	type Rapid	result 1	date 2025-01-25	rnd 4	type Rapid	result 1
		Opponent Mclachlan, J (James)				Opponent Mclachlan, J (James)
3	1	Tournament Bloemfontein Highschool League 02 Aug 2024				Tournament Bloemfontein Highschool League 02 Aug 2024
		date 2024-08-02	rnd 1	type Rapid	result 1	date 2024-08-02	rnd 1	type Rapid	result 1
		Opponent Dell, K (Kaleb)				Opponent Dell, K (Kaleb)

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	Mclachlan ,J (James)	3	1	-141.7	2	0	-425	1	1	425	0	0	0
1	Mclachlan ,J (James)	3	1335.2	1193.5	2	1324.9	910.2	1	1317.9	1760.2	0	0	0
2	Buys ,J (Jandru)	2	2	425	2	2	425	0	0	0	0	0	0
2	Buys ,J (Jandru)	2	1196.7	1621.7	2	1195.8	1621.7	0	0	0	0	0	0
3	Rossouw ,J (Johrne)	2	0	-425	1	0	-425	1	0	-425	0	0	0
3	Rossouw ,J (Johrne)	2	1565.1	1140.1	1	1559.9	1140.1	1	1562.3	1140.1	0	0	0
4	Landman ,J (Johan)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Landman ,J (Johan)	1	1356.2	931.2	1	1278.4	931.2	0	0	0	0	0	0
5	Mofete ,T (Tirelo)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Mofete ,T (Tirelo)	1	1200	775	1	1200	775	0	0	0	0	0	0
6	Colbert ,A (Ashlynne)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Colbert ,A (Ashlynne)	1	1360.8	935.8	1	1340.5	935.8	0	0	0	0	0	0
7	Pretorius ,L (Leighan)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Pretorius ,L (Leighan)	1	1532.1	1107.1	1	1482.2	1107.1	0	0	0	0	0	0
8	Moroka ,L (Lefa)	1	1	425	1	1	425	0	0	0	0	0	0
8	Moroka ,L (Lefa)	1	1215.6	1640.6	1	1200	1640.6	0	0	0	0	0	0
9	Mohohlo ,L (Love-Jadis)	1	1	425	1	1	425	0	0	0	0	0	0
9	Mohohlo ,L (Love-Jadis)	1	1208.1	1633.1	1	1214.6	1633.1	0	0	0	0	0	0
10	Mitchell ,T (Thomas)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Mitchell ,T (Thomas)	1	1264.9	1264.9	1	1224.1	1264.9	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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Personal

Ebersohn, D (Dewald)

Ratings

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms