Chess South Africa Ratings Database

PLAYER PAGE

Personal

Van Der Merwe, M (Marthinus)

Chess SA id

1120108381

FIDE id

Date of birth

2012-03-02 (U14)

Gender

Male

Region

Mangaung (FMB)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-09-26

Personal details last changed

1900-01-01

Junior GPX Games

10.5

Junior GPX Points

1311.8

Item	Main	Standard	Rapid	Blitz
Rating	1302.7	1314.6	1214.5	1200
Raw rating	1302.7	1314.6	1214.5	1200
Weighted rating	1230	1314.3	1068.4	1200
Weighted performance	1175	891.5	1049.9	0
Floor	965.8	961.7	766	700
K-factor	32	32	36	36
Min/Max rating change allowed	143.2	140.8	162.4	165.8
Highest rating	1481.6 2019-07-01	1477.5 2019-07-01	1360.7 2021-08-01	1200 2018-10-01
Highest raw rating	1465.8 2019-08-01	1461.7 2019-08-01	1266 2022-02-01	1200 2024-02-01
Highest weighted rating	1465.8 2022-07-01	1461.7 2022-12-01	1266 2022-02-01	1200 2018-10-01
Highest weighted performance	1481.6 2019-07-01	1477.5 2019-07-01	1360.7 2021-08-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1302.7	1314.6	1214.5	1200
Analysis
Rating	1302.7	1314.6	1214.5	1200
Raw rating	1302.7	1314.6	1214.5	1200
Weighted rating	1230	1314.3	1068.4
Weighted performance	1175	891.5	1049.9
K-factor	32	32	36	36
Floor	965.8	961.7	766	700
Max/Min rating change allowed	143.2	140.8	162.4	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	1302.7	1314.6	1214.5	1200
New weighted rating	1235.9	1314.2	1080.9	1200
New weighted performance	1167.3	883.9	1042.8	0
Temp new rating	1302.7	1314.6	1214.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1302.7	1314.6	1214.5	1200
New K-factor	32	32	36	36
New floor	965.8	961.7	766	700

Item	Main	Standard	Rapid
	0	0	0
	7	0	7
	17	7	10
	10	5	5
	31	6	25
	10	5	5
History	138	86	52

Games since
	Main 24	Standard 7		Rapid 17		Blitz 0
Gender	Male
Age group	U14
Region	Mangaung (FMB)
Province	Free State (FS)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U14	-1		-1		-1
U14 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	7	6.5	92.86	364.3	1354.6	1718.9
Standard	0	0	0	0	0	0
Rapid	7	6.5	92.86	364.3	1354.6	1718.9
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	138	81	58.7	73.9	1222.3	1296.2
Standard	86	54	62.79	108.7	1214.4	1323.1
Rapid	52	27	51.92	16.3	1235.4	1251.7
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-11-01	1302.7	1314.6	1214.5	1200
2025-09-30	1225.9	1314.6	1056.8	1200
2025-09-01	1225.9	1314.6	1056.8	1200
2025-08-01	1225.9	1314.6	1056.8	1200
2025-07-01	1225.9	1314.6	1056.8	1200
2025-06-01	1225.9	1314.6	1056.8	1200
2025-05-01	1225.9	1314.6	1056.8	1200
2025-04-01	1225.9	1314.6	1056.8	1200
2025-03-01	1225.9	1314.5	1056.8	1200
2025-02-01	1225.9	1313	1056.8	1200
2025-01-01	1221.4	1294.7	1056.8	1200
2024-12-01	1217.2	1316.8	1056.8	1200
2024-11-01	1217.2	1316.8	1056.8	1200
2024-10-01	1217.2	1316.8	1056.8	1200
2024-09-01	1217.2	1316.8	1056.8	1200
2024-08-01	1217.2	1316.8	1056.8	1200
2024-07-01	1217.2	1316.8	1056.8	1200
2024-09-01	1217.2	1316.8	1056.8	1200
2024-05-01	1217.2	1316.8	1056.8	1200
2024-04-01	1217.2	1316.8	1056.8	1200
2024-03-01	1229.9	1316.8	1039.5	1200
2024-02-01	1247.4	1316.8	1017.9	1200
2024-01-01	1247.4	1316.8	1017.9	1200
2023-12-01	1247.4	1316.8	1017.9	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 Super 8 (Senior)	2025-09-26	2025-09-26	Rapid	Ekurhuleni (GE)	7	7	6.5	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Super 8 (Senior)	2025-09-26	2025-09-26	Rapid	Ekurhuleni (GE)	7	7	6.5	Yes	Analysis
2	Mzansi Interprovincial Youth Chess Championships 2024 (U14 Open Championship)	2024-12-16	2024-12-19	Standard	Capricorn (LCP)	7	7	2.5	Yes	Analysis
3	Mangaung Metro Chess 9 March 2024 (B)	2024-03-09	2024-03-09	Rapid	Mangaung (FMB)	5	5	2.5	Yes	Analysis
4	Mangaung Metro Chess 10 February 2024 (B)	2024-02-10	2024-02-10	Rapid	Mangaung (FMB)	5	5	2	Yes	Analysis
5	Inter Regional Chess Championship 2023 (U12)	2023-05-19	2023-05-20	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
6	Kings & Queens Chess 21 January 2023 (B)	2023-01-21	2023-01-21	Rapid	Mangaung (FMB)	5	5	1	Yes	Analysis
7	2022 South African Junior Team Chess Championships (U12 Open)	2022-12-04	2022-12-08	Standard	4 Knights (4K)	7	6	1	Yes	Analysis
8	Super 8 Skaak 2022 (Seniors)	2022-10-14	2022-10-14	Rapid	Bojanala Platina (NBR)	7	6	1	Yes	Analysis
9	Mangaung Metro Chess 13 August 2022 (B)	2022-08-13	2022-08-13	Rapid	Mangaung (FMB)	5	5	2	Yes	Analysis
10	Mangaung Metro Chess 30 July 2022 (B)	2022-07-30	2022-07-30	Rapid	Mangaung (FMB)	5	5	3	Yes	Analysis
11	Morris Club Championship 2022	2022-02-26	2022-02-26	Rapid	Mangaung (FMB)	5	4	0	Yes	Analysis
12	Mangaung Metro Chess 22 January 2022 (B)	2022-01-22	2022-01-22	Rapid	Mangaung (FMB)	5	5	4	Yes	Analysis
13	Mangaung Metro Chess 28 August 2021 (C)	2021-08-28	2021-08-28	Rapid	Mangaung (FMB)	5	5	5	Yes	Analysis
14	Lejweleputswa 3rd Qualifying Tournament 2021 (C)	2021-04-24	2021-04-24	Standard	Lejweleputswa (FLW)	5	5	4.5	Yes	Analysis
15	Mangaung Metro Chess February 2020 (D)	2020-02-21	2020-02-22	Standard	Mangaung (FMB)	5	5	2	Yes	Analysis
16	Mangaung Metro Chess 17-18 January 2020 (E)	2020-01-17	2020-01-18	Standard	Mangaung (FMB)	5	5	5	Yes	Analysis
17	2019 Wild Card Chess Championship (U8 Open+Girls)	2020-01-09	2020-01-12	Standard	4 Knights (4K)	7	7	4	Yes	Analysis
18	2019 South African Junior Team Championships (U8B+U8Girls)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	3.5	Yes	Analysis
19	Mangaung Metro Chess October 2019 (E)	2019-10-11	2019-10-12	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
20	Mangaung Metro Chess 16-17 August 2019 (G)	2019-08-16	2019-08-17	Standard	Mangaung (FMB)	5	5	3.5	Yes	Analysis
21	Mangaung Metro July Trials 2019 (U8)	2019-07-19	2019-07-20	Standard	Mangaung (FMB)	5	5	5	Yes	Analysis
22	Mangaung Metro Chess 31 May to 1 June 2019 (G)	2019-05-31	2019-06-01	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
23	Inter Regional Chess Championship 2019 (U8)	2019-05-10	2019-05-11	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
24	Mangaung Metro Chess 12 to 13 April 2019 (G)	2019-04-12	2019-04-13	Standard	Mangaung (FMB)	5	5	4	Yes	Analysis
25	Mangaung Metro Chess 15-16 March 2019 (F)	2019-03-15	2019-03-16	Standard	Mangaung (FMB)	5	5	3	Yes	Analysis
26	Mangaung Metro Chess 1-2 February 2019 (F)	2019-02-01	2019-02-02	Standard	Mangaung (FMB)	5	4	1	Yes	Analysis

#	Games	Start				End
1	12	Tournament Lejweleputswa 3rd Qualifying Tournament 2021				Tournament Mangaung Metro Chess 22 January 2022
		date 2021-04-24	rnd 1	type Standard	result 1	date 2022-01-22	rnd 2	type Rapid	result 1
		Opponent Mbongo, N (Nomavuso)				Opponent Lebenya, A (Agnes)
2	10	Tournament Mangaung Metro Chess 31 May to 1 June 2019				Tournament Mangaung Metro Chess 16-17 August 2019
		date 2019-06-01	rnd 5	type Standard	result 1	date 2019-08-17	rnd 4	type Standard	result 1
		Opponent Els, R (Ruben)				Opponent Steyn, W (Willem)
3	9	Tournament Mzansi Interprovincial Youth Chess Championships 2024				Tournament 2025 Super 8
		date 2024-12-18	rnd 6	type Standard	result 1	date 2025-09-26	rnd 7	type Rapid	result 1
		Opponent Motsoane, I (Isaac)				Opponent Obrien, P (Patrick)

#	Games	Start				End
1	10	Tournament Mangaung Metro Chess 31 May to 1 June 2019				Tournament Mangaung Metro Chess 16-17 August 2019
		date 2019-06-01	rnd 5	type Standard	result 1	date 2019-08-17	rnd 4	type Standard	result 1
		Opponent Els, R (Ruben)				Opponent Steyn, W (Willem)
2	8	Tournament 2019 Wild Card Chess Championship				Tournament Mangaung Metro Chess 17-18 January 2020
		date 2020-01-11	rnd 5	type Standard	result 0.5	date 2020-01-18	rnd 5	type Standard	result 1
		Opponent Grahan, T (Tylo)				Opponent Maritz, J (Jandre)
3	5	Tournament Lejweleputswa 3rd Qualifying Tournament 2021				Tournament Lejweleputswa 3rd Qualifying Tournament 2021
		date 2021-04-24	rnd 1	type Standard	result 1	date 2021-04-24	rnd 5	type Standard	result 1
		Opponent Mbongo, N (Nomavuso)				Opponent Dlikithela, M (Mivuyo)

#	Games	Start				End
1	7	Tournament Mangaung Metro Chess 28 August 2021				Tournament Mangaung Metro Chess 22 January 2022
		date 2021-08-28	rnd 1	type Rapid	result 1	date 2022-01-22	rnd 2	type Rapid	result 1
		Opponent Melville, J (Joalize)				Opponent Lebenya, A (Agnes)
2	3	Tournament Mangaung Metro Chess 30 July 2022				Tournament Mangaung Metro Chess 30 July 2022
		date 2022-07-30	rnd 2	type Rapid	result 1	date 2022-07-30	rnd 4	type Rapid	result 1
		Opponent Molatlhoe, K (Keagen)				Opponent Pelesa, O (Oratilwe)
3	2	Tournament Mangaung Metro Chess 10 February 2024				Tournament Mangaung Metro Chess 10 February 2024
		date 2024-02-10	rnd 2	type Rapid	result 1	date 2024-02-10	rnd 3	type Rapid	result 1
		Opponent Botshelo, M (Mabule)				Opponent Wang, Z (Zirou)

No games found.

#	Games	Start				End

#	Games	Start				End
1	10	Tournament Lejweleputswa 3rd Qualifying Tournament 2021				Tournament Mangaung Metro Chess 22 January 2022
		date 2021-04-24	rnd 3	type Standard	result 1	date 2022-01-22	rnd 2	type Rapid	result 1
		Opponent Seutloali, K (Kananelo)				Opponent Lebenya, A (Agnes)
2	7	Tournament 2019 Wild Card Chess Championship				Tournament Mangaung Metro Chess 17-18 January 2020
		date 2020-01-11	rnd 6	type Standard	result 1	date 2020-01-18	rnd 5	type Standard	result 1
		Opponent Pillay, J (Joshua)				Opponent Maritz, J (Jandre)
3	6	Tournament Mangaung Metro Chess 31 May to 1 June 2019				Tournament Mangaung Metro July Trials 2019
		date 2019-06-01	rnd 5	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Els, R (Ruben)				Opponent Els, R (Ruben)

#	Games	Start				End
1	7	Tournament 2019 Wild Card Chess Championship				Tournament Mangaung Metro Chess 17-18 January 2020
		date 2020-01-11	rnd 6	type Standard	result 1	date 2020-01-18	rnd 5	type Standard	result 1
		Opponent Pillay, J (Joshua)				Opponent Maritz, J (Jandre)
2	6	Tournament Mangaung Metro Chess 31 May to 1 June 2019				Tournament Mangaung Metro July Trials 2019
		date 2019-06-01	rnd 5	type Standard	result 1	date 2019-07-20	rnd 5	type Standard	result 1
		Opponent Els, R (Ruben)				Opponent Els, R (Ruben)
3	5	Tournament Inter Regional Chess Championship 2019				Tournament Mangaung Metro Chess 31 May to 1 June 2019
		date 2019-05-11	rnd 4	type Standard	result 1	date 2019-06-01	rnd 3	type Standard	result 1
		Opponent Manko, K (Kamohelo)				Opponent Maass, A (Ane)

#	Games	Start				End
1	7	Tournament Mangaung Metro Chess 28 August 2021				Tournament Mangaung Metro Chess 22 January 2022
		date 2021-08-28	rnd 1	type Rapid	result 1	date 2022-01-22	rnd 2	type Rapid	result 1
		Opponent Melville, J (Joalize)				Opponent Lebenya, A (Agnes)
2	3	Tournament Mangaung Metro Chess 30 July 2022				Tournament Mangaung Metro Chess 30 July 2022
		date 2022-07-30	rnd 2	type Rapid	result 1	date 2022-07-30	rnd 4	type Rapid	result 1
		Opponent Molatlhoe, K (Keagen)				Opponent Pelesa, O (Oratilwe)
3	2	Tournament Mangaung Metro Chess 10 February 2024				Tournament Mangaung Metro Chess 10 February 2024
		date 2024-02-10	rnd 2	type Rapid	result 1	date 2024-02-10	rnd 3	type Rapid	result 1
		Opponent Botshelo, M (Mabule)				Opponent Wang, Z (Zirou)

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	Els ,R (Ruben)	6	4	141.7	5	3	85	1	1	425	0	0	0
1	Els ,R (Ruben)	6	1253.6	1395.2	5	1236.6	1338.6	1	1200	1678.6	0	0	0
2	Steyn ,W (Willem)	4	4	425	4	4	425	0	0	0	0	0	0
2	Steyn ,W (Willem)	4	1199.8	1624.8	4	1197.8	1624.8	0	0	0	0	0	0
3	Herbst ,W (Wilhelm)	4	3	212.5	4	3	212.5	0	0	0	0	0	0
3	Herbst ,W (Wilhelm)	4	1217	1429.5	4	1211.6	1429.5	0	0	0	0	0	0
4	Vermaak ,N (Nehan)	3	3	425	3	3	425	0	0	0	0	0	0
4	Vermaak ,N (Nehan)	3	1196.4	1621.4	3	1195.1	1621.4	0	0	0	0	0	0
5	Olivier ,R (Riley)	3	0	-425	1	0	-425	2	0	-425	0	0	0
5	Olivier ,R (Riley)	3	1234.2	809.2	1	1195.8	809.2	2	1303.2	809.2	0	0	0
6	Els ,C (Christiaan)	3	2	141.7	1	1	425	2	1	0	0	0	0
6	Els ,C (Christiaan)	3	1263.1	1404.8	1	1169.2	1688.1	2	1217.2	1263.1	0	0	0
7	Maass ,A (Ane)	2	1	0	2	1	0	0	0	0	0	0	0
7	Maass ,A (Ane)	2	1205.8	1205.8	2	1205.1	1205.8	0	0	0	0	0	0
8	Robb ,N (Nathan)	2	2	425	2	2	425	0	0	0	0	0	0
8	Robb ,N (Nathan)	2	1156.3	1581.3	2	1147.6	1581.3	0	0	0	0	0	0
9	Maritz ,J (Jandre)	2	1	0	2	1	0	0	0	0	0	0	0
9	Maritz ,J (Jandre)	2	1258.4	1258.4	2	1255.3	1258.4	0	0	0	0	0	0
10	Jacobs ,E (E-Jay)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
10	Jacobs ,E (E-Jay)	2	1111	1323.5	2	1096.4	1323.5	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, M (Marthinus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms