Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, M (Merikus)

Chess SA id

1120131217

FIDE id

Date of birth

2012-07-17 (U14)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2025-07-26

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

1270.1

Item	Main	Standard	Rapid	Blitz
Rating	1245.2	1226.7	1267.5	1200
Raw rating	1245.2	1226.7	1267.5	1200
Weighted rating	1213.1	1193.8	1239.7	1200
Weighted performance	1219.1	1200.7	0	0
Floor	782.3	746.5	767.5	700
K-factor	36	36	36	36
Min/Max rating change allowed	155.5	159.6	150.6	165.8
Highest rating	1282.3 2025-06-01	1246.5 2025-06-01	1274.6 2022-05-01	1200 2018-10-01
Highest raw rating	1282.3 2025-06-01	1246.5 2025-06-01	1267.5 2025-06-01	1200 2024-02-01
Highest weighted rating	1282.3 2018-10-01	1246.5 2018-10-01	1233.7 2025-08-01	1200 2018-10-01
Highest weighted performance	1282.3 2025-08-01	1226.7 2024-06-01	1274.6 2022-05-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1245.2	1226.7	1267.5	1200
Analysis
Rating	1245.2	1226.7	1267.5	1200
Raw rating	1245.2	1226.7	1267.5	1200
Weighted rating	1213.1	1193.8	1239.7
Weighted performance	1219.1	1200.7	0
K-factor	36	36	36	36
Floor	782.3	746.5	767.5	700
Max/Min rating change allowed	155.5	159.6	150.6	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	1245.2	1226.7	1267.5	1200
New weighted rating	1216.7	1197.7	1242.5	1200
New weighted performance	1218.7	1200.3	0	0
Temp new rating	1245.2	1226.7	1267.5	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1245.2	1226.7	1267.5	1200
New K-factor	36	36	36	36
New floor	782.3	746.5	767.5	700

Item	Main	Standard	Rapid
	0	0	0
	23	17	6
	33	33	0
	10	10	0
	17	4	13
	19	19	0
History	107	88	19

Games since
	Main 56	Standard 50		Rapid 6		Blitz 0
Gender	Male
Age group	U14
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	3681		1204		427
Male	2821		927		325
U14	690		222		74
U14 Male	496		160		54
Standard
	RSA		Province		Region
Overall	3720		1316		514
Male	2820		1010		392
U14	722		247		91
U14 Male	509		177		66
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	23	11	47.83	-18.5	1297.3	1278.8
Standard	17	7	41.18	-75	1309.5	1234.5
Rapid	6	4	66.67	141.7	1262.6	1404.3
Blitz	0	0	0	0	0	0
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	107	45	42.06	-67.5	1243.3	1175.8
Standard	88	34	38.64	-96.6	1246.4	1149.8
Rapid	19	11	57.89	67.1	1229.3	1296.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1245.2	1226.7	1267.5	1200
2025-09-01	1245.2	1226.7	1267.5	1200
2025-08-01	1245.2	1226.7	1267.5	1200
2025-07-01	1238.4	1198.6	1267.5	1200
2025-06-01	1282.3	1246.5	1267.5	1200
2025-05-01	1217.6	1208.2	1223.6	1200
2025-04-01	1217.6	1208.2	1223.6	1200
2025-03-01	1217.6	1208.2	1223.6	1200
2025-02-01	1217.6	1208.2	1223.6	1200
2025-01-01	1217.6	1208.2	1223.6	1200
2024-12-01	1141.8	1127.6	1223.6	1200
2024-11-01	1141.8	1127.6	1223.6	1200
2024-10-01	1141.8	1127.6	1223.6	1200
2024-09-01	1170.9	1153.5	1223.6	1200
2024-08-01	1170.9	1153.5	1223.6	1200
2024-07-01	1218.7	1209.7	1223.6	1200
2024-06-01	1218.7	1198.8	1223.6	1200
2024-08-01	1179.2	1143.2	1223.6	1200
2024-04-01	1179.2	1143.2	1223.6	1200
2024-03-01	1179.2	1143.2	1223.6	1200
2024-02-01	1179.2	1143.2	1223.6	1200
2024-01-01	1179.2	1143.2	1223.6	1200
2023-12-01	1179.2	1143.2	1223.6	1200
2023-11-01	1179.2	1143.2	1223.6	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 Menlo Open (U14)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	2025 Elise Steenkamp Open Chess Tournament (Rook)	2025-06-14	2025-06-16	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
3	RMS Rapid Chess Open 31 May 2025 (U13)	2025-05-31	2025-05-31	Rapid	Sedibeng (GSV)	6	6	4	Yes	Analysis
4	2025 Tshwane South School District Individual Finals (D4) (U13 Boys)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2025 Menlo Open (U14)	2025-07-26	2025-07-26	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
2	2025 Elise Steenkamp Open Chess Tournament (Rook)	2025-06-14	2025-06-16	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
3	RMS Rapid Chess Open 31 May 2025 (U13)	2025-05-31	2025-05-31	Rapid	Sedibeng (GSV)	6	6	4	Yes	Analysis
4	2025 Tshwane South School District Individual Finals (D4) (U13 Boys)	2025-05-10	2025-05-10	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
5	Gauteng Inter-Region at UJ 2024 (U14 Candidates)	2024-12-07	2024-12-08	Standard	Johannesburg Metro (GJM)	5	5	4	Yes	Analysis
6	2024 Etienne Lewis (U14)	2024-08-30	2024-09-01	Standard	Tshwane (GTP)	7	7	2	Yes	Analysis
7	2024 Midstream College Open Chess Tournament (B2)	2024-07-20	2024-07-20	Standard	Tshwane (GTP)	5	4	0	Yes	Analysis
8	2024 Elise Steenkamp Open Chess Tournament (Queens)	2024-06-15	2024-06-17	Standard	Tshwane (GTP)	7	7	3	Yes	Analysis
9	2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (D)	2024-06-01	2024-06-01	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
10	2024 Tshwane South School District CLOSED Individual Championships (U13 Mixed)	2024-05-11	2024-05-11	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
11	2023 Tshwane South School District CLOSED Individual Championships (U11 Open)	2023-04-22	2023-04-22	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
12	2023 Milos Ristic Open Tournament (D2)	2023-04-27	2023-04-27	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis
13	RMS Swiss For Rating of Players 2022 (U11)	2022-05-28	2022-05-28	Rapid	Ekurhuleni (GE)	7	6	4	Yes	Analysis
14	D4 Individuals 2022 (U11 Open)	2022-04-23	2022-04-23	Rapid	Tshwane (GTP)	7	7	3	Yes	Analysis
15	2022 Gauteng Interregion (U12 Open)	2022-02-26	2022-02-26	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
16	2021 Etienne Lewis Closed Trials (U10 Open)	2021-09-24	2021-09-26	Standard	Nelson Mandela Bay (ENM)	7	6	1	Yes	Analysis
17	2021 Gauteng North Open Tournament (E)	2021-08-28	2021-08-29	Standard	Tshwane (GTP)	5	4	1	Yes	Analysis
18	2021 Alekhine Open (E)	2021-08-14	2021-08-15	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
19	2021 Chris Greyling Open Tournament (E)	2021-05-08	2021-05-08	Standard	Tshwane (GTP)	5	4	0.5	Yes	Analysis
20	2020 Blou Bul (E)	2020-02-15	2020-02-15	Standard	Tshwane (GTP)	5	5	1.5	Yes	Analysis

#	Games	Start				End
1	4	Tournament RMS Swiss For Rating of Players 2022				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2022-05-28	rnd 6	type Rapid	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Ramusha, N (Naledi)				Opponent Weitz, J (Johann)
2	3	Tournament 2025 Tshwane South School District Individual Finals (D4)				Tournament RMS Rapid Chess Open 31 May 2025
		date 2025-05-10	rnd 5	type Standard	result 1	date 2025-05-31	rnd 2	type Rapid	result 1
		Opponent Visser, A (Aaron)				Opponent Nel, N (Nikita)
3	3	Tournament 2024 Etienne Lewis				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-09-01	rnd 7	type Standard	result 1	date 2024-12-07	rnd 2	type Standard	result 1
		Opponent Mashele, N (Naledi)				Opponent Matekenya, Q (Qycinqleighter)

#	Games	Start				End
1	4	Tournament 2022 Gauteng Interregion				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2022-02-26	rnd 5	type Standard	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Mabuza, N (Nondumiso)				Opponent Weitz, J (Johann)
2	3	Tournament 2024 Etienne Lewis				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-09-01	rnd 7	type Standard	result 1	date 2024-12-07	rnd 2	type Standard	result 1
		Opponent Mashele, N (Naledi)				Opponent Matekenya, Q (Qycinqleighter)
3	2	Tournament 2025 Menlo Open				Tournament 2025 Menlo Open
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Maree, M (Morgan)				Opponent Allison, S (Spencer)

#	Games	Start				End
1	3	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Rapid Chess Open 31 May 2025
		date 2022-05-28	rnd 6	type Rapid	result 1	date 2025-05-31	rnd 2	type Rapid	result 1
		Opponent Ramusha, N (Naledi)				Opponent Nel, N (Nikita)
2	2	Tournament RMS Rapid Chess Open 31 May 2025				Tournament RMS Rapid Chess Open 31 May 2025
		date 2025-05-31	rnd 5	type Rapid	result 1	date 2025-05-31	rnd 6	type Rapid	result 1
		Opponent Nel, N (Nikita)				Opponent Hattingh, B (Ben)
3	2	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 1	type Rapid	result 1	date 2022-05-28	rnd 2	type Rapid	result 1
		Opponent Niebuhr, R (Rohan)				Opponent Sibiya, K (Khayalethu)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament RMS Swiss For Rating of Players 2022				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2022-05-28	rnd 6	type Rapid	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Ramusha, N (Naledi)				Opponent Weitz, J (Johann)
2	3	Tournament 2025 Tshwane South School District Individual Finals (D4)				Tournament RMS Rapid Chess Open 31 May 2025
		date 2025-05-10	rnd 5	type Standard	result 1	date 2025-05-31	rnd 2	type Rapid	result 1
		Opponent Visser, A (Aaron)				Opponent Nel, N (Nikita)
3	3	Tournament 2024 Etienne Lewis				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-09-01	rnd 7	type Standard	result 1	date 2024-12-07	rnd 2	type Standard	result 1
		Opponent Mashele, N (Naledi)				Opponent Matekenya, Q (Qycinqleighter)

#	Games	Start				End
1	4	Tournament 2022 Gauteng Interregion				Tournament 2023 Tshwane South School District CLOSED Individual Championships
		date 2022-02-26	rnd 5	type Standard	result 1	date 2023-04-22	rnd 3	type Standard	result 1
		Opponent Mabuza, N (Nondumiso)				Opponent Weitz, J (Johann)
2	3	Tournament 2024 Etienne Lewis				Tournament Gauteng Inter-Region at UJ 2024
		date 2024-09-01	rnd 7	type Standard	result 1	date 2024-12-07	rnd 2	type Standard	result 1
		Opponent Mashele, N (Naledi)				Opponent Matekenya, Q (Qycinqleighter)
3	2	Tournament 2025 Menlo Open				Tournament 2025 Menlo Open
		date 2025-07-26	rnd 2	type Standard	result 1	date 2025-07-26	rnd 3	type Standard	result 1
		Opponent Maree, M (Morgan)				Opponent Allison, S (Spencer)

#	Games	Start				End
1	3	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Rapid Chess Open 31 May 2025
		date 2022-05-28	rnd 6	type Rapid	result 1	date 2025-05-31	rnd 2	type Rapid	result 1
		Opponent Ramusha, N (Naledi)				Opponent Nel, N (Nikita)
2	2	Tournament RMS Rapid Chess Open 31 May 2025				Tournament RMS Rapid Chess Open 31 May 2025
		date 2025-05-31	rnd 5	type Rapid	result 1	date 2025-05-31	rnd 6	type Rapid	result 1
		Opponent Nel, N (Nikita)				Opponent Hattingh, B (Ben)
3	2	Tournament RMS Swiss For Rating of Players 2022				Tournament RMS Swiss For Rating of Players 2022
		date 2022-05-28	rnd 1	type Rapid	result 1	date 2022-05-28	rnd 2	type Rapid	result 1
		Opponent Niebuhr, R (Rohan)				Opponent Sibiya, K (Khayalethu)

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	Buchner ,E (Emil)	4	1	-212.5	4	1	-212.5	0	0	0	0	0	0
1	Buchner ,E (Emil)	4	1189.2	976.8	4	1176.4	976.8	0	0	0	0	0	0
2	Mcphail ,M (Matthew)	3	0	-425	2	0	-425	1	0	-425	0	0	0
2	Mcphail ,M (Matthew)	3	1251.6	826.6	2	1267.6	826.6	1	1200	826.6	0	0	0
3	De Bruin ,H (Hanno)	2	1	0	2	1	0	0	0	0	0	0	0
3	De Bruin ,H (Hanno)	2	1144.7	1144.7	2	1125.1	1144.7	0	0	0	0	0	0
4	Eksteen ,THA (Theunis Hermanus Andrich)	2	2	425	2	2	425	0	0	0	0	0	0
4	Eksteen ,THA (Theunis Hermanus Andrich)	2	1200	1625	2	1200	1625	0	0	0	0	0	0
5	Truscott ,A (Adriaan)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Truscott ,A (Adriaan)	2	1530.8	1105.8	2	1527.9	1105.8	0	0	0	0	0	0
6	Le Roux ,R (Reuben)	2	0	-425	2	0	-425	0	0	0	0	0	0
6	Le Roux ,R (Reuben)	2	1223.8	798.8	2	1218.9	798.8	0	0	0	0	0	0
7	Pretorius ,P (Pieter)	2	1.5	212.5	2	1.5	212.5	0	0	0	0	0	0
7	Pretorius ,P (Pieter)	2	1313.4	1525.9	2	1314.8	1525.9	0	0	0	0	0	0
8	Erwee ,E (Elizabeth)	2	2	425	2	2	425	0	0	0	0	0	0
8	Erwee ,E (Elizabeth)	2	1073.6	1498.6	2	1060.3	1498.6	0	0	0	0	0	0
9	Steyn ,H (Henco)	2	0	-425	2	0	-425	0	0	0	0	0	0
9	Steyn ,H (Henco)	2	1289.4	864.4	2	1279.1	864.4	0	0	0	0	0	0
10	Naidoo ,P (Prium)	2	1	0	1	0	-425	1	1	425	0	0	0
10	Naidoo ,P (Prium)	2	1220.3	1220.3	1	1200	795.3	1	1200	1645.3	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

Ratings

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PLAYER PAGE

Personal

Coetzee, M (Merikus)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms