Chess South Africa Ratings Database

PLAYER PAGE

Personal

Duursema, W (Willem)

Chess SA id

1110316415

FIDE id

Date of birth

2011-05-29 (U16)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-10-25

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1292.2

Item	Main	Standard	Rapid	Blitz
Rating	1358.4	1359.6	1200	1200
Raw rating	1358.4	1359.6	1200	1200
Weighted rating	1267.5	1268.7	1200	1200
Weighted performance	1328.8	1333.9	0	0
Floor	875.5	878.1	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	132.3	132.1	165.8	165.8
Highest rating	1375.5 2025-08-01	1378.1 2025-08-01	1200 2025-03-01	1200 2025-03-01
Highest raw rating	1375.5 2025-08-01	1378.1 2025-08-01	1200 2025-03-01	1200 2025-03-01
Highest weighted rating	1267.5 2025-11-01	1268.7 2025-11-01	1200 2025-03-01	1200 2025-03-01
Highest weighted performance	1375.5 2025-08-01	1378.1 1900-01-01	0 1900-01-01	0 1900-01-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1358.4	1359.6	1200	1200
Analysis
Rating	1358.4	1359.6	1200	1200
Raw rating	1358.4	1359.6	1200	1200
Weighted rating	1267.5	1268.7	1200
Weighted performance	1328.8	1333.9	0
K-factor	36	36	36	36
Floor	875.5	878.1	700	700
Max/Min rating change allowed	132.3	132.1	165.8	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	1358.4	1359.6	1200	1200
New weighted rating	1277.1	1278.3	1200	1200
New weighted performance	1320.8	1325.9	0	0
Temp new rating	1358.4	1359.6	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1358.4	1359.6	1200	1200
New K-factor	36	36	36	36
New floor	875.5	878.1	700	700

Item	Main	Standard
	0	0
	49	49
	0	0
	0	0
	0	0
	0	0
History	49	49

Games since
	Main 49	Standard 49		Rapid 0		Blitz 0
Gender	Male
Age group	U16
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	2631		912		332
Male	2115		726		261
U16	417		142		51
U16 Male	313		104		42
Standard
	RSA		Province		Region
Overall	2542		941		363
Male	2040		756		286
U16	402		146		58
U16 Male	304		110		48
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U16	-1		-1		-1
U16 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	49	27.5	56.12	52	1258.9	1310.9
Standard	49	27.5	56.12	52	1258.9	1310.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	49	27.5	56.12	52	1258.9	1310.9
Standard	49	27.5	56.12	52	1258.9	1310.9
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1358.4	1359.6	1200	1200
2025-09-30	1367.1	1368.6	1200	1200
2025-09-01	1367.1	1368.6	1200	1200
2025-08-01	1375.5	1378.1	1200	1200
2025-07-01	1351.4	1354.4	1200	1200
2025-06-01	1295.8	1298.7	1200	1200
2025-05-01	1223.6	1229.1	1200	1200
2025-04-01	1199.8	1199.8	1200	1200
2025-03-01	1199	1198.7	1200	1200
2025-02-01	1200	1200	1200	1200
2025-01-01	1200	1200	1200	1200
2024-12-01	1200	1200	1200	1200
2024-11-01	1200	1200	1200	1200
2024-10-01	1200	1200	1200	1200
2024-09-01	1200	1200	1200	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	2025 Laerskool Doringkloof Primary Open Chess Tournament (C)	2025-10-25	2025-10-25	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	2025 Tshwane North District CLOSED Team Championships (D3) (U15 Open)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U15)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	4	3	Yes	Analysis
4	2025 Jacaranda Round Robin Open Chess Tournament (K)	2025-06-21	2025-06-21	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
5	2025 Elise Steenkamp Open Chess Tournament (Rook)	2025-06-14	2025-06-16	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
6	2025 Tshwane North School District CLOSED Individual Chess Championship (U15 Open)	2025-05-24	2025-05-24	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
7	2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U15 Open)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
8	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
9	2025 Mid Gauteng Open Chess Tournament (D)	2025-04-12	2025-04-12	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
10	2025 KSNG Open (D)	2025-02-22	2025-02-22	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Laerskool Doringkloof Primary Open Chess Tournament (C)	2025-10-25	2025-10-25	Standard	Tshwane (GTP)	5	5	2.5	Yes	Analysis
2	2025 Tshwane North District CLOSED Team Championships (D3) (U15 Open)	2025-08-16	2025-08-16	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
3	2025 Tshwane North School District Cluster 4 & 5 Team League (D3) (U15)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	4	3	Yes	Analysis
4	2025 Jacaranda Round Robin Open Chess Tournament (K)	2025-06-21	2025-06-21	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
5	2025 Elise Steenkamp Open Chess Tournament (Rook)	2025-06-14	2025-06-16	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
6	2025 Tshwane North School District CLOSED Individual Chess Championship (U15 Open)	2025-05-24	2025-05-24	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
7	2025 Tshwane North School District CLOSED Individual Championships Cluster 4&5 (U15 Open)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
8	2025 Silver Lakes Chess Club Open Chess Tournament (D)	2025-05-03	2025-05-03	Standard	Tshwane (GTP)	5	4	2	Yes	Analysis
9	2025 Mid Gauteng Open Chess Tournament (D)	2025-04-12	2025-04-12	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
10	2025 KSNG Open (D)	2025-02-22	2025-02-22	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2025 Tshwane North School District Cluster 4 & 5 Team League (D3)				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Maabane, N (Nareadi Phuthi Mmodi)				Opponent Chansa, E (Elisee)
2	3	Tournament 2025 Laerskool Doringkloof Primary Open Chess Tournament				Tournament 2025 Laerskool Doringkloof Primary Open Chess Tournament
		date 2025-10-25	rnd 2	type Standard	result 1	date 2025-10-25	rnd 4	type Standard	result 0.5
		Opponent Tissot Van Patot, D (Donovan)				Opponent Sekomane, I (Ismael)
3	3	Tournament 2025 Jacaranda Round Robin Open Chess Tournament				Tournament 2025 Jacaranda Round Robin Open Chess Tournament
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 5	type Standard	result 1
		Opponent Kritzinger, M (Madeleine)				Opponent Buthelezi, M (Mpendulo)

#	Games	Start				End
1	4	Tournament 2025 Tshwane North School District Cluster 4 & 5 Team League (D3)				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Maabane, N (Nareadi Phuthi Mmodi)				Opponent Chansa, E (Elisee)
2	3	Tournament 2025 Jacaranda Round Robin Open Chess Tournament				Tournament 2025 Jacaranda Round Robin Open Chess Tournament
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 5	type Standard	result 1
		Opponent Kritzinger, M (Madeleine)				Opponent Buthelezi, M (Mpendulo)
3	3	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament 2025 Silver Lakes Chess Club Open Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Van Zijl, J (Joane)				Opponent Kekaana, O (Obakeng)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament 2025 Tshwane North School District Cluster 4 & 5 Team League (D3)				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Maabane, N (Nareadi Phuthi Mmodi)				Opponent Chansa, E (Elisee)
2	3	Tournament 2025 Jacaranda Round Robin Open Chess Tournament				Tournament 2025 Jacaranda Round Robin Open Chess Tournament
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 5	type Standard	result 1
		Opponent Kritzinger, M (Madeleine)				Opponent Buthelezi, M (Mpendulo)
3	3	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament 2025 Silver Lakes Chess Club Open Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Van Zijl, J (Joane)				Opponent Kekaana, O (Obakeng)

#	Games	Start				End
1	4	Tournament 2025 Tshwane North School District Cluster 4 & 5 Team League (D3)				Tournament 2025 Tshwane North District CLOSED Team Championships (D3)
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-08-16	rnd 1	type Standard	result 1
		Opponent Maabane, N (Nareadi Phuthi Mmodi)				Opponent Chansa, E (Elisee)
2	3	Tournament 2025 Jacaranda Round Robin Open Chess Tournament				Tournament 2025 Jacaranda Round Robin Open Chess Tournament
		date 2025-06-21	rnd 3	type Standard	result 1	date 2025-06-21	rnd 5	type Standard	result 1
		Opponent Kritzinger, M (Madeleine)				Opponent Buthelezi, M (Mpendulo)
3	3	Tournament 2025 Mid Gauteng Open Chess Tournament				Tournament 2025 Silver Lakes Chess Club Open Chess Tournament
		date 2025-04-12	rnd 4	type Standard	result 1	date 2025-05-03	rnd 1	type Standard	result 1
		Opponent Van Zijl, J (Joane)				Opponent Kekaana, O (Obakeng)

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	Ngwana ,T (Thapelo Jurie Junior)	2	1	0	2	1	0	0	0	0	0	0	0
1	Ngwana ,T (Thapelo Jurie Junior)	2	1200	1200	2	1200	1200	0	0	0	0	0	0
2	Potgieter ,W (Wilmari)	2	2	425	2	2	425	0	0	0	0	0	0
2	Potgieter ,W (Wilmari)	2	1260.5	1685.5	2	1269.4	1685.5	0	0	0	0	0	0
3	Lotz ,D (Dimitrios)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Lotz ,D (Dimitrios)	1	1184	759	1	1179.6	759	0	0	0	0	0	0
4	Bairos ,M (Michael Oliver)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Bairos ,M (Michael Oliver)	1	1311.3	886.3	1	1330.8	886.3	0	0	0	0	0	0
5	Vorster ,M (Meandri)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Vorster ,M (Meandri)	1	1422	997	1	1416	997	0	0	0	0	0	0
6	Kekaana ,O (Obakeng)	1	1	425	1	1	425	0	0	0	0	0	0
6	Kekaana ,O (Obakeng)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
7	Spies ,J (Joshua)	1	1	425	1	1	425	0	0	0	0	0	0
7	Spies ,J (Joshua)	1	1289	1714	1	1307.3	1714	0	0	0	0	0	0
8	Frauendorf ,D (Diedrich Karel)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Frauendorf ,D (Diedrich Karel)	1	1200	775	1	1200	775	0	0	0	0	0	0
9	Makhafola ,B (Bonolo)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
9	Makhafola ,B (Bonolo)	1	1255.1	1255.1	1	1265.6	1255.1	0	0	0	0	0	0
10	Sekomane ,I (Ismael)	1	0.5	0	1	0.5	0	0	0	0	0	0	0
10	Sekomane ,I (Ismael)	1	1346.3	1346.3	1	1370.9	1346.3	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

Tournaments

Grand Prix

Statistics

Notifications

PLAYER PAGE

Personal

Duursema, W (Willem)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms