Chess South Africa Ratings Database

PLAYER PAGE

Personal

Coetzee, IJ (Ivander Johannes)

Chess SA id

1080115588

FIDE id

Date of birth

2008-01-04 (U18)

Gender

Male

Region

Tshwane (GTP)

Citizen

RSA

Titles

Chess SA registered

Last active game

2024-04-19

Personal details last changed

1900-01-01

Junior GPX Games

Junior GPX Points

Item	Main	Standard	Rapid	Blitz
Rating	1191	1176	1200.7	1200
Raw rating	1191	1176	1200.7	1200
Weighted rating	1190.6	1176	1200.7	1200
Weighted performance	532.2	0	0	0
Floor	731.2	737.2	700.7	700
K-factor	36	36	36	36
Min/Max rating change allowed	168	171.6	165.7	165.8
Highest rating	1482 2019-07-01	1482.6 2019-07-01	1223.5 2024-04-01	1200 2018-10-01
Highest raw rating	1231.2 2019-08-01	1237.2 2019-08-01	1200.7 2024-05-01	1200 2024-02-01
Highest weighted rating	1231.2 2019-11-01	1237.2 2019-11-01	1200.6 2025-08-01	1200 2018-10-01
Highest weighted performance	1482 2019-07-01	1482.6 2019-07-01	1223.5 2024-04-01	1200 2024-02-01

Prediction
Item	Main	Standard	Rapid	Blitz
Rating change	0	0	0	0
New rating	1191	1176	1200.7	1200
Analysis
Rating	1191	1176	1200.7	1200
Raw rating	1191	1176	1200.7	1200
Weighted rating	1190.6	1176	1200.7
Weighted performance	532.2	0	0
K-factor	36	36	36	36
Floor	731.2	737.2	700.7	700
Max/Min rating change allowed	168	171.6	165.7	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	1191	1176	1200.7	1200
New weighted rating	1190.7	1176	1200.7	1200
New weighted performance	531.8	0	0	0
Temp new rating	1191	1176	1200.7	1200
Temp new rating +/-	0	0	0	0
Final new rating +/-	0	0	0	0
New rating	1191	1176	1200.7	1200
New K-factor	36	36	36	36
New floor	731.2	737.2	700.7	700

Item	Main	Standard	Rapid
	0	0	0
	0	0	0
	6	0	6
	0	0	0
	0	0	0
	0	0	0
History	30	24	6

Games since
	Main 6	Standard 0		Rapid 6		Blitz 0
Gender	Male
Age group	U18
Region	Tshwane (GTP)
Province	Gauteng (GT)
Main
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Standard
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Rapid
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 Male	-1		-1		-1
Blitz
	RSA		Province		Region
Overall	-1		-1		-1
Male	-1		-1		-1
U18	-1		-1		-1
U18 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	30	15.5	51.67	14.2	1184	1198.2
Standard	24	12.5	52.08	17.7	1171.4	1189.1
Rapid	6	3	50	0	1234.4	1234.4
Blitz	0	0	0	0	0	0

Date	Main	Standard	Rapid	Blitz
2025-09-30	1191	1176	1200.7	1200
2025-09-01	1191	1176	1200.7	1200
2025-08-01	1191	1176	1200.7	1200
2025-07-01	1191	1176	1200.7	1200
2025-06-01	1191	1176	1200.7	1200
2025-05-01	1191	1176	1200.7	1200
2025-04-01	1191	1176	1200.7	1200
2025-03-01	1191	1176	1200.7	1200
2025-02-01	1191	1176	1200.7	1200
2025-01-01	1191	1176	1200.7	1200
2024-12-01	1191	1176	1200.7	1200
2024-11-01	1191	1176	1200.7	1200
2024-10-01	1191	1176	1200.7	1200
2024-09-01	1191	1176	1200.7	1200
2024-08-01	1191	1176	1200.7	1200
2024-07-01	1191	1176	1200.7	1200
2024-06-01	1191	1176	1200.7	1200
2024-08-01	1191	1176	1200.7	1200
2024-04-01	1185.4	1176	1200	1200
2024-03-01	1185.4	1176	1200	1200
2024-02-01	1185.4	1176	1200	1200
2024-01-01	1185.4	1176	1200	1200
2023-12-01	1185.4	1176	1200	1200
2023-11-01	1185.4	1176	1200	1200

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	NWU Super 16 2024	2024-04-19	2024-04-19	Rapid	Gert Sibande (MGS)	6	6	3	Yes	Analysis
2	2020 Wynie Robbertse Open Chess Tournament (U14)	2020-03-07	2020-03-07	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
3	2019 South African Junior Team Championships (U12E)	2020-01-04	2020-01-08	Standard	4 Knights (4K)	7	7	3.5	Yes	Analysis
4	2019 TC SAJCC Prep Tournament (B)	2019-11-30	2019-11-30	Standard	Tshwane (GTP)	5	5	2	Yes	Analysis
5	2019 D3 Team League (U11)	2019-07-20	2019-07-20	Standard	Tshwane (GTP)	5	2	2	Yes	Analysis
6	Wonderboom Interhuis 2019 (U11)	2019-05-04	2019-05-04	Standard	Tshwane (GTP)	5	5	3	Yes	Analysis

#	Games	Start				End
1	4	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 2	type Standard	result 1	date 2020-01-06	rnd 5	type Standard	result 1
		Opponent Frier, E (Edwin)				Opponent Mathabatha, N (Naledi)
2	4	Tournament Wonderboom Interhuis 2019				Tournament 2019 D3 Team League
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Louw, U (Ulrich)				Opponent Mnisis, G (George)
3	3	Tournament NWU Super 16 2024				Tournament NWU Super 16 2024
		date 2024-04-19	rnd 4	type Rapid	result 1	date 2024-04-19	rnd 6	type Rapid	result 1
		Opponent Du Randt, Z (Zack)				Opponent Kriel, D (Devin)

#	Games	Start				End
1	4	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 2	type Standard	result 1	date 2020-01-06	rnd 5	type Standard	result 1
		Opponent Frier, E (Edwin)				Opponent Mathabatha, N (Naledi)
2	4	Tournament Wonderboom Interhuis 2019				Tournament 2019 D3 Team League
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Louw, U (Ulrich)				Opponent Mnisis, G (George)
3	1	Tournament 2020 Wynie Robbertse Open Chess Tournament				Tournament 2020 Wynie Robbertse Open Chess Tournament
		date 2020-03-07	rnd 4	type Standard	result 1	date 2020-03-07	rnd 4	type Standard	result 1
		Opponent Grahan, C (Chie-Ann)				Opponent Grahan, C (Chie-Ann)

#	Games	Start				End
1	3	Tournament NWU Super 16 2024				Tournament NWU Super 16 2024
		date 2024-04-19	rnd 4	type Rapid	result 1	date 2024-04-19	rnd 6	type Rapid	result 1
		Opponent Du Randt, Z (Zack)				Opponent Kriel, D (Devin)

No games found.

#	Games	Start				End

#	Games	Start				End
1	4	Tournament Wonderboom Interhuis 2019				Tournament 2019 D3 Team League
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Louw, U (Ulrich)				Opponent Mnisis, G (George)
2	3	Tournament NWU Super 16 2024				Tournament NWU Super 16 2024
		date 2024-04-19	rnd 4	type Rapid	result 1	date 2024-04-19	rnd 6	type Rapid	result 1
		Opponent Du Randt, Z (Zack)				Opponent Kriel, D (Devin)
3	2	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 2	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Frier, E (Edwin)				Opponent Huang, K (Kayleen)

#	Games	Start				End
1	4	Tournament Wonderboom Interhuis 2019				Tournament 2019 D3 Team League
		date 2019-05-04	rnd 4	type Standard	result 1	date 2019-07-20	rnd 4	type Standard	result 1
		Opponent Louw, U (Ulrich)				Opponent Mnisis, G (George)
2	2	Tournament 2019 South African Junior Team Championships				Tournament 2019 South African Junior Team Championships
		date 2020-01-04	rnd 2	type Standard	result 1	date 2020-01-05	rnd 3	type Standard	result 1
		Opponent Frier, E (Edwin)				Opponent Huang, K (Kayleen)
3	1	Tournament 2020 Wynie Robbertse Open Chess Tournament				Tournament 2020 Wynie Robbertse Open Chess Tournament
		date 2020-03-07	rnd 4	type Standard	result 1	date 2020-03-07	rnd 4	type Standard	result 1
		Opponent Grahan, C (Chie-Ann)				Opponent Grahan, C (Chie-Ann)

#	Games	Start				End
1	3	Tournament NWU Super 16 2024				Tournament NWU Super 16 2024
		date 2024-04-19	rnd 4	type Rapid	result 1	date 2024-04-19	rnd 6	type Rapid	result 1
		Opponent Du Randt, Z (Zack)				Opponent Kriel, D (Devin)

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	Oosthuizen ,K (Kagan)	2	1	0	2	1	0	0	0	0	0	0	0
1	Oosthuizen ,K (Kagan)	2	1058.3	1058.3	2	1036.3	1058.3	0	0	0	0	0	0
2	Mnisis ,G (George)	1	1	425	1	1	425	0	0	0	0	0	0
2	Mnisis ,G (George)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
3	Lindokuhle ,M (Mahamba)	1	1	425	1	1	425	0	0	0	0	0	0
3	Lindokuhle ,M (Mahamba)	1	1200	1625	1	1200	1625	0	0	0	0	0	0
4	Mathabatha ,N (Naledi)	1	1	425	1	1	425	0	0	0	0	0	0
4	Mathabatha ,N (Naledi)	1	1036.1	1461.1	1	995.9	1461.1	0	0	0	0	0	0
5	Lujiza ,K (Keitumetse)	1	1	425	1	1	425	0	0	0	0	0	0
5	Lujiza ,K (Keitumetse)	1	1174.2	1599.2	1	1177.6	1599.2	0	0	0	0	0	0
6	Lotz ,L (Leanu)	1	0	-425	1	0	-425	0	0	0	0	0	0
6	Lotz ,L (Leanu)	1	1305.2	880.2	1	1295.3	880.2	0	0	0	0	0	0
7	Kameel ,L (Lindon)	1	0	-425	1	0	-425	0	0	0	0	0	0
7	Kameel ,L (Lindon)	1	1290.1	865.1	1	1236	865.1	0	0	0	0	0	0
8	Swart ,C (Christopher)	1	0	-425	1	0	-425	0	0	0	0	0	0
8	Swart ,C (Christopher)	1	734.1	309.1	1	749	309.1	0	0	0	0	0	0
9	Sithole ,N (Nolwazi)	1	0	-425	1	0	-425	0	0	0	0	0	0
9	Sithole ,N (Nolwazi)	1	1306.3	881.3	1	1302.4	881.3	0	0	0	0	0	0
10	Olivier ,BM (Barnard Markus)	1	1	425	1	1	425	0	0	0	0	0	0
10	Olivier ,BM (Barnard Markus)	1	1063.5	1488.5	1	1045	1488.5	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

Coetzee, IJ (Ivander Johannes)

Ratings

Game statistics

Rankings

Historical performance

Last 24 raw ratings

Rating graph

Tournaments

Top 3 Streaks

Top 10 opponents most often played

Norms