Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, D (Diedrik)

Chess SA id

1070192372

FIDE id

Date of birth

2007-07-28 (U20)

Gender

Male

Region

(LWB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-05-17

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1144.3	1136.8	1200	1200
Raw rating	1144.3	1136.8	1200	1200
Weighted rating	1139.4	1129.3	1200	1200
Weighted performance	954.4	948.6	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	179.5	181.4	165.8	165.8
Highest rating	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest raw rating	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted rating	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01	1200 2024-02-01
Highest weighted performance	1200 2024-12-01	1200 2024-12-01	1200 2024-02-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1144.3	1136.8	1200	1200
Analysis
Rating	1144.3	1136.8	1200	1200
Raw rating	1144.3	1136.8	1200	1200
Weighted rating	1139.4	1129.3	1200
Weighted performance	954.4	948.6	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	179.5	181.4	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	1144.3	1136.8	1200	1200
New weighted rating	1139.2	1129.4	1200	1200
New weighted performance	954.1	948.2	0	0
Temp new rating	1144.3	1136.8	1200	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1144.3	1136.8	1200	1200
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard
	0	0
	5	5
	19	19
	0	0
	0	0
	0	0
History	24	24

Games since
	Main 24	Standard 24		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region
Province
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	5	2	40	-85	1219.3	1134.3
Standard	5	2	40	-85	1219.3	1134.3
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	24	7	29.17	-177.1	1231.2	1054.2
Standard	24	7	29.17	-177.1	1231.2	1054.2
Rapid	0	0	0	0	0	0
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1144.3	1136.8	1200	1200
2025-09-01	1144.3	1136.8	1200	1200
2025-08-01	1144.3	1136.8	1200	1200
2025-07-01	1144.3	1136.8	1200	1200
2025-06-01	1145.1	1135.5	1200	1200
2025-05-01	1145.1	1135.5	1200	1200
2025-04-01	1145.1	1135.5	1200	1200
2025-03-01	1145.1	1135.5	1200	1200
2025-02-01	1144.4	1134.6	1200	1200
2025-01-01	1116.2	1100	1200	1200
2024-12-01	1116.2	1100	1200	1200
2024-11-01	1116.2	1100	1200	1200
2024-10-01	1116.2	1100	1200	1200
2024-09-01	1135.5	1125.6	1200	1200
2024-08-01	1135.5	1125.6	1200	1200
2024-07-01	1135.5	1125.6	1200	1200
2024-06-01	1135.5	1125.6	1200	1200
2024-08-01	1136.2	1127.6	1200	1200
2024-04-01	1126.6	1113.6	1200	1200
2024-03-01	1126.6	1113.6	1200	1200
2024-02-01	1200	1200	1200	1200
2024-01-01	1200	1200	1200	1200
2023-12-01	1200	1200	1200	1200
2023-11-01	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	Capricorn District Qualifying Tournament 5 2025 (U18+U20)	2025-05-17	2025-05-17	Standard	Capricorn (LCP)	5	5	2	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	Capricorn District Qualifying Tournament 5 2025 (U18+U20)	2025-05-17	2025-05-17	Standard	Capricorn (LCP)	5	5	2	Yes	Analysis
2	Capricorn Junior Qualifying 6 2024 (U18)	2024-09-14	2024-09-14	Standard	Capricorn (LCP)	5	5	1	Yes	Analysis
3	Capricorn Junior Qualifying 4 2024 (U18)	2024-05-03	2024-05-03	Standard	Capricorn (LCP)	5	5	2	Yes	Analysis
4	NABOOMSPAR Open Chess Tournament 2024 (Open)	2024-04-27	2024-04-27	Standard	Waterberg (LWM)	5	5	2	Yes	Analysis
5	Capricorn District Chess Junior Qualifying Tournament 2024 (U18)	2024-02-10	2024-02-10	Standard	Capricorn (LCP)	5	4	0	Yes	Analysis

#	Games	Start				End
1	2	Tournament Capricorn District Qualifying Tournament 5 2025				Tournament Capricorn District Qualifying Tournament 5 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Mclaughlin, M (Matthew)				Opponent Ramuhulu, T (Tsiko)
2	2	Tournament Capricorn Junior Qualifying 4 2024				Tournament Capricorn Junior Qualifying 4 2024
		date 2024-05-03	rnd 3	type Standard	result 1	date 2024-05-03	rnd 4	type Standard	result 1
		Opponent Matji, T (Tumelo)				Opponent Mohuba, K (Kabelo)
3	1	Tournament Capricorn Junior Qualifying 6 2024				Tournament Capricorn Junior Qualifying 6 2024
		date 2024-09-14	rnd 5	type Standard	result 0.5	date 2024-09-14	rnd 5	type Standard	result 0.5
		Opponent Malejoane, K (Kamohelo)				Opponent Malejoane, K (Kamohelo)

#	Games	Start				End
1	2	Tournament Capricorn District Qualifying Tournament 5 2025				Tournament Capricorn District Qualifying Tournament 5 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Mclaughlin, M (Matthew)				Opponent Ramuhulu, T (Tsiko)
2	2	Tournament Capricorn Junior Qualifying 4 2024				Tournament Capricorn Junior Qualifying 4 2024
		date 2024-05-03	rnd 3	type Standard	result 1	date 2024-05-03	rnd 4	type Standard	result 1
		Opponent Matji, T (Tumelo)				Opponent Mohuba, K (Kabelo)
3	1	Tournament Capricorn Junior Qualifying 6 2024				Tournament Capricorn Junior Qualifying 6 2024
		date 2024-09-14	rnd 5	type Standard	result 0.5	date 2024-09-14	rnd 5	type Standard	result 0.5
		Opponent Malejoane, K (Kamohelo)				Opponent Malejoane, K (Kamohelo)

No games found.

#	Games	Start				End

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament Capricorn District Qualifying Tournament 5 2025				Tournament Capricorn District Qualifying Tournament 5 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Mclaughlin, M (Matthew)				Opponent Ramuhulu, T (Tsiko)
2	2	Tournament Capricorn Junior Qualifying 4 2024				Tournament Capricorn Junior Qualifying 4 2024
		date 2024-05-03	rnd 3	type Standard	result 1	date 2024-05-03	rnd 4	type Standard	result 1
		Opponent Matji, T (Tumelo)				Opponent Mohuba, K (Kabelo)
3	1	Tournament NABOOMSPAR Open Chess Tournament 2024				Tournament NABOOMSPAR Open Chess Tournament 2024
		date 2024-04-27	rnd 5	type Standard	result 1	date 2024-04-27	rnd 5	type Standard	result 1
		Opponent Pretorius, D (Delmar)				Opponent Pretorius, D (Delmar)

#	Games	Start				End
1	2	Tournament Capricorn District Qualifying Tournament 5 2025				Tournament Capricorn District Qualifying Tournament 5 2025
		date 2025-05-17	rnd 3	type Standard	result 1	date 2025-05-17	rnd 4	type Standard	result 1
		Opponent Mclaughlin, M (Matthew)				Opponent Ramuhulu, T (Tsiko)
2	2	Tournament Capricorn Junior Qualifying 4 2024				Tournament Capricorn Junior Qualifying 4 2024
		date 2024-05-03	rnd 3	type Standard	result 1	date 2024-05-03	rnd 4	type Standard	result 1
		Opponent Matji, T (Tumelo)				Opponent Mohuba, K (Kabelo)
3	1	Tournament NABOOMSPAR Open Chess Tournament 2024				Tournament NABOOMSPAR Open Chess Tournament 2024
		date 2024-04-27	rnd 5	type Standard	result 1	date 2024-04-27	rnd 5	type Standard	result 1
		Opponent Pretorius, D (Delmar)				Opponent Pretorius, D (Delmar)

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	Matji ,T (Tumelo)	2	2	425	2	2	425	0	0	0	0	0	0
1	Matji ,T (Tumelo)	2	1170.4	1595.4	2	1162.4	1595.4	0	0	0	0	0	0
2	Chokoe ,L (Lesiba)	2	0	-425	2	0	-425	0	0	0	0	0	0
2	Chokoe ,L (Lesiba)	2	1299.4	874.4	2	1258.2	874.4	0	0	0	0	0	0
3	Dicks ,E (Enrico)	1	0	-425	1	0	-425	0	0	0	0	0	0
3	Dicks ,E (Enrico)	1	1200	775	1	1200	775	0	0	0	0	0	0
4	Muller ,J (Juan)	1	0	-425	1	0	-425	0	0	0	0	0	0
4	Muller ,J (Juan)	1	1257.8	832.8	1	1223.4	832.8	0	0	0	0	0	0
5	Cronje ,A (Anke)	1	0	-425	1	0	-425	0	0	0	0	0	0
5	Cronje ,A (Anke)	1	1245.7	820.7	1	1247.8	820.7	0	0	0	0	0	0
6	Makhubele ,M (Muhluri)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Makhubele ,M (Muhluri)	1	1200	775	1	1200	775	0	0	0	0	0	0
7	Mclaughlin ,M (Matthew)	1	1	425	1	1	425	0	0	0	0	0	0
7	Mclaughlin ,M (Matthew)	1	1334.2	1759.2	1	1337.7	1759.2	0	0	0	0	0	0
8	Pieterse ,JJ (Johan)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Pieterse ,JJ (Johan)	1	1244	819	1	1256.6	819	0	0	0	0	0	0
9	Motimela ,M (Mokibelo Prince Percy Ju)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Motimela ,M (Mokibelo Prince Percy Ju)	1	1164.7	739.7	1	1150	739.7	0	0	0	0	0	0
10	Molokomme ,M (Mpho)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Molokomme ,M (Mpho)	1	1128.1	703.1	1	1116.8	703.1	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Van Der Merwe, D (Diedrik)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms