Chess South Africa Ratings Database

PLAYER PAGE

Personal

Koen, M (Martin)

Chess SA id

107094878

FIDE id

Date of birth

2007-12-10 (U20)

Gender

Male

Region

Ekurhuleni (GE)

Citizen

RSA

Titles

Chess SA registered

Last active game

2020-01-11

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1130.4	1113.6	1200	1075.2
Raw rating	1130.4	1113.6	1200	1075.2
Weighted rating	1130.4	1113.6	1200	1075.2
Weighted performance	272.1	265.4	0	0
Floor	700	700	700	700
K-factor	36	36	36	36
Min/Max rating change allowed	183.1	187.5	165.8	198.1
Highest rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest raw rating	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2018-02-01
Highest weighted rating	1200 2018-02-01	1200 2018-02-01	1200 2018-10-01	1200 2018-10-01
Highest weighted performance	1200 2018-02-01	1200 2018-02-01	1200 2024-02-01	1200 2018-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1130.4	1113.6	1200	1075.2
Analysis
Rating	1130.4	1113.6	1200	1075.2
Raw rating	1130.4	1113.6	1200	1075.2
Weighted rating	1130.4	1113.6	1200
Weighted performance	272.1	265.4	0
K-factor	36	36	36	36
Floor	700	700	700	700
Max/Min rating change allowed	183.1	187.5	165.8	198.1
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	1130.4	1113.6	1200	1075.2
New weighted rating	1130.4	1113.6	1200	1075.2
New weighted performance	271.7	265	0	0
Temp new rating	1130.4	1113.6	1200	1075.2
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1130.4	1113.6	1200	1075.2
New K-factor	36	36	36	36
New floor	700	700	700	700

Item	Main	Standard	Rapid	Blitz
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
	0	0	0	0
History	95	77	11	7

Games since
	Main 0	Standard 0		Rapid 0		Blitz 0
Gender	Male
Age group	U20
Region	Ekurhuleni (GE)
Province	Gauteng (GT)
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	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
History
	Games	Score	%	Dp	AvgOpp	Performance
Main	84	40	47.62	-20.2	1082.8	1062.6
Standard	77	37.5	48.7	-11	1086.9	1075.9
Rapid	0	0	0	0	0	0
Blitz	7	2.5	35.71	-121.4	1037.7	916.3

Date	Main	Standard	Rapid	Blitz
2025-09-30	1130.4	1113.6	1200	1075.2
2025-09-01	1130.4	1113.6	1200	1075.2
2025-08-01	1130.4	1113.6	1200	1075.2
2025-07-01	1130.4	1113.6	1200	1075.2
2025-06-01	1130.4	1113.6	1200	1075.2
2025-05-01	1130.4	1113.6	1200	1075.2
2025-04-01	1130.4	1113.6	1200	1075.2
2025-03-01	1130.4	1113.6	1200	1075.2
2025-02-01	1130.4	1113.6	1200	1075.2
2025-01-01	1130.4	1113.6	1200	1075.2
2024-12-01	1130.4	1113.6	1200	1075.2
2024-11-01	1130.4	1113.6	1200	1075.2
2024-10-01	1130.4	1113.6	1200	1075.2
2024-09-01	1130.4	1113.6	1200	1075.2
2024-08-01	1130.4	1113.6	1200	1075.2
2024-07-01	1130.4	1113.6	1200	1075.2
2024-06-01	1130.4	1113.6	1200	1075.2
2024-08-01	1130.4	1113.6	1200	1075.2
2024-04-01	1130.4	1113.6	1200	1075.2
2024-03-01	1130.4	1113.6	1200	1075.2
2024-02-01	1130.4	1113.6	1200	1075.2
2024-01-01	1130.4	1113.6	1200	1075.2
2023-12-01	1130.4	1113.6	1200	1075.2
2023-11-01	1130.4	1113.6	1200	1075.2

Comming soon.

Tournaments

History

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

No tournaments found.

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis

Last 500 tournaments since 01 January 2018

#	Tournament	Start	End	Type	Host	Rounds	Games	Score	Cfr	Analysis
1	2019 South African Top Schools Team Championships (U13 Open)	2020-01-10	2020-01-11	Standard	4 Knights (4K)	5	5	2	Yes	Analysis
2	Boksburg Chess Club Open 2019 (C)	2019-07-13	2019-07-13	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
3	Ekurhuleni North School District Finals 2019 (U13 Boys)	2019-05-11	2019-05-11	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
4	Ekurhuleni Trials 2 2019 (U14)	2019-04-27	2019-04-27	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
5	Ekurhuleni Trials 1 2019 (U14)	2019-03-09	2019-03-09	Standard	Ekurhuleni (GE)	5	5	2.5	Yes	Analysis
6	South African Junior Blitz 2018 (U12)	2018-12-19	2018-12-19	Blitz	4 Knights (4K)	7	7	2.5	Yes	Analysis
7	South African Junior Team Championships 2018 (U12D)	2018-12-16	2018-12-20	Standard	4 Knights (4K)	7	7	2	Yes	Analysis
8	Inter Region GE vs JHB Metro 2018 (U12 Swiss)	2018-10-06	2018-10-06	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
9	2018 Gauteng League Final (U11)	2018-08-24	2018-08-24	Standard	Tshwane (GTP)	5	5	4	Yes	Analysis
10	Ekurhuleni Open 2018 (C)	2018-08-18	2018-08-18	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
11	Ekurhuleni North District Schools Final 2018 (U11)	2018-08-04	2018-08-04	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
12	Witfield Open 2018 (C)	2018-07-21	2018-07-21	Standard	Ekurhuleni (GE)	5	5	1	Yes	Analysis
13	Boksburg Chess Club Open 2018 (U12)	2018-07-14	2018-07-14	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
14	Ekurhuleni Trials 3 2018 (U12)	2018-06-16	2018-06-16	Standard	Ekurhuleni (GE)	5	5	2	Yes	Analysis
15	Human Rights Day Open 2018 (C)	2018-03-21	2018-03-21	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis
16	Ekurhuleni Trials 1 2018 (U12)	2018-03-10	2018-03-10	Standard	Ekurhuleni (GE)	5	5	3	Yes	Analysis

#	Games	Start				End
1	6	Tournament Ekurhuleni Open 2018				Tournament 2018 Gauteng League Final
		date 2018-08-18	rnd 4	type Standard	result 1	date 2018-08-24	rnd 4	type Standard	result 1
		Opponent Preston, R (Rico)				Opponent Mthimunyi, T (Thandeka)
2	4	Tournament Ekurhuleni Trials 2 2019				Tournament Ekurhuleni North School District Finals 2019
		date 2019-04-27	rnd 4	type Standard	result 1	date 2019-05-11	rnd 2	type Standard	result 1
		Opponent Gaokgorwe, O (Oatile)				Opponent Molapo, N (Neo)
3	4	Tournament Ekurhuleni Trials 1 2018				Tournament Ekurhuleni Trials 1 2018
		date 2018-03-10	rnd 2	type Standard	result 1	date 2018-03-10	rnd 5	type Standard	result 0.5
		Opponent Bosman, E (Elri)				Opponent Zwane, MB (Musa)

#	Games	Start				End
1	6	Tournament Ekurhuleni Open 2018				Tournament 2018 Gauteng League Final
		date 2018-08-18	rnd 4	type Standard	result 1	date 2018-08-24	rnd 4	type Standard	result 1
		Opponent Preston, R (Rico)				Opponent Mthimunyi, T (Thandeka)
2	4	Tournament Ekurhuleni Trials 2 2019				Tournament Ekurhuleni North School District Finals 2019
		date 2019-04-27	rnd 4	type Standard	result 1	date 2019-05-11	rnd 2	type Standard	result 1
		Opponent Gaokgorwe, O (Oatile)				Opponent Molapo, N (Neo)
3	4	Tournament Ekurhuleni Trials 1 2018				Tournament Ekurhuleni Trials 1 2018
		date 2018-03-10	rnd 2	type Standard	result 1	date 2018-03-10	rnd 5	type Standard	result 0.5
		Opponent Bosman, E (Elri)				Opponent Zwane, MB (Musa)

No games found.

#	Games	Start				End

#	Games	Start				End
1	2	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 3	type Blitz	result 1	date 2018-12-19	rnd 4	type Blitz	result 0.5
		Opponent Rossouw, A (Alicia)				Opponent Hawkins, J (Joshua)
2	1	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 7	type Blitz	result 1	date 2018-12-19	rnd 7	type Blitz	result 1
		Opponent Rheeders, PH (Petrus Hendrik)				Opponent Rheeders, PH (Petrus Hendrik)

#	Games	Start				End
1	6	Tournament Ekurhuleni Open 2018				Tournament 2018 Gauteng League Final
		date 2018-08-18	rnd 4	type Standard	result 1	date 2018-08-24	rnd 4	type Standard	result 1
		Opponent Preston, R (Rico)				Opponent Mthimunyi, T (Thandeka)
2	4	Tournament Ekurhuleni Trials 2 2019				Tournament Ekurhuleni North School District Finals 2019
		date 2019-04-27	rnd 4	type Standard	result 1	date 2019-05-11	rnd 2	type Standard	result 1
		Opponent Gaokgorwe, O (Oatile)				Opponent Molapo, N (Neo)
3	3	Tournament Ekurhuleni North School District Finals 2019				Tournament Boksburg Chess Club Open 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-07-13	rnd 2	type Standard	result 1
		Opponent Chirenga, T (Tawananyasha)				Opponent Terblanche, A (Anja)

#	Games	Start				End
1	6	Tournament Ekurhuleni Open 2018				Tournament 2018 Gauteng League Final
		date 2018-08-18	rnd 4	type Standard	result 1	date 2018-08-24	rnd 4	type Standard	result 1
		Opponent Preston, R (Rico)				Opponent Mthimunyi, T (Thandeka)
2	4	Tournament Ekurhuleni Trials 2 2019				Tournament Ekurhuleni North School District Finals 2019
		date 2019-04-27	rnd 4	type Standard	result 1	date 2019-05-11	rnd 2	type Standard	result 1
		Opponent Gaokgorwe, O (Oatile)				Opponent Molapo, N (Neo)
3	3	Tournament Ekurhuleni North School District Finals 2019				Tournament Boksburg Chess Club Open 2019
		date 2019-05-11	rnd 5	type Standard	result 1	date 2019-07-13	rnd 2	type Standard	result 1
		Opponent Chirenga, T (Tawananyasha)				Opponent Terblanche, A (Anja)

No games found.

#	Games	Start				End

#	Games	Start				End
1	1	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 7	type Blitz	result 1	date 2018-12-19	rnd 7	type Blitz	result 1
		Opponent Rheeders, PH (Petrus Hendrik)				Opponent Rheeders, PH (Petrus Hendrik)
2	1	Tournament South African Junior Blitz 2018				Tournament South African Junior Blitz 2018
		date 2018-12-19	rnd 3	type Blitz	result 1	date 2018-12-19	rnd 3	type Blitz	result 1
		Opponent Rossouw, A (Alicia)				Opponent Rossouw, A (Alicia)

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	Attwell ,R (Rowan)	3	1	-141.7	3	1	-141.7	0	0	0	0	0	0
1	Attwell ,R (Rowan)	3	998.2	856.5	3	994.8	856.5	0	0	0	0	0	0
2	Terblanche ,A (Anja)	2	1	0	2	1	0	0	0	0	0	0	0
2	Terblanche ,A (Anja)	2	1189.4	1189.4	2	1187.1	1189.4	0	0	0	0	0	0
3	De Swardt ,C (Chrizander)	2	0.5	-212.5	2	0.5	-212.5	0	0	0	0	0	0
3	De Swardt ,C (Chrizander)	2	1074.4	861.9	2	1071.2	861.9	0	0	0	0	0	0
4	Jaitas ,K (Kittisak)	2	0	-425	2	0	-425	0	0	0	0	0	0
4	Jaitas ,K (Kittisak)	2	1177.6	752.6	2	1168.8	752.6	0	0	0	0	0	0
5	Netshimbupfe ,W (Wanga)	2	0	-425	2	0	-425	0	0	0	0	0	0
5	Netshimbupfe ,W (Wanga)	2	1148.6	723.6	2	1145.2	723.6	0	0	0	0	0	0
6	Nunes ,D (Duarte)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Nunes ,D (Duarte)	1	1114.9	689.9	1	1095.8	689.9	0	0	0	0	0	0
7	Gaokgorwe ,O (Oatile)	1	1	425	1	1	425	0	0	0	0	0	0
7	Gaokgorwe ,O (Oatile)	1	1057.3	1482.3	1	1028	1482.3	0	0	0	0	0	0
8	Maxam ,T (Tumelo Kagiso)	1	1	425	1	1	425	0	0	0	0	0	0
8	Maxam ,T (Tumelo Kagiso)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
9	Preston ,R (Rico)	1	1	425	1	1	425	0	0	0	0	0	0
9	Preston ,R (Rico)	1	1015.7	1440.7	1	977.6	1440.7	0	0	0	0	0	0
10	Koki ,M (Mila)	1	0	-425	1	0	-425	0	0	0	0	0	0
10	Koki ,M (Mila)	1	1013.8	588.8	1	1030.4	588.8	0	0	0	0	0	0

Norms

No norms achieved.

#	Norm	Tournament	Start	End	Rounds	Games	Score	Details

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PLAYER PAGE

Personal

Koen, M (Martin)

Ratings

Game statistics

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Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms