Chess South Africa
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Chess South Africa
Coetzee, IJ (Ivander Johannes)
Dob:
2008/01/04 (U18)
Gender:
Male
Chess SA id:
1080115588
FIDE id:
Region:
Tshwane (GTP)
Citizen:
RSA
Title(s):
Last active:
2024/04/19 (45 days ago)
Ratings
The
Projected values
below are
NOT
the actual and official values as calculated by the Ratings Bureau.
Main
Standard
Rapid
Blitz
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1191.0
Curent Weighted rating
1186.3
Curent Weighted performance
722.6
Current official/published rating (highest between Raw, WR and WP)
1191.0
Current floor (min rating allowed)
731.2
Current highest rating achieved
1231.2
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±168.0
Current Raw change used (final)
0.0
Projected new Raw rating
1191.0
Projected new Weighed rating
1186.7
Projected new Weighted performance
722.6
Projected new official/published rating (highest between new Raw, new WR and new WP)
1191.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1231.2
Projected new floor
731.2
Projected new K-facor
36
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1176.0
Curent Weighted rating
1176.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1176.0
Current floor (min rating allowed)
737.2
Current highest rating achieved
1237.2
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±171.6
Current Raw change used (final)
0.0
Projected new Raw rating
1176.0
Projected new Weighed rating
1176.0
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1176.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1237.2
Projected new floor
737.2
Projected new K-facor
36
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1200.7
Curent Weighted rating
1200.1
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.7
Current floor (min rating allowed)
700.7
Current highest rating achieved
1200.7
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±165.7
Current Raw change used (final)
0.0
Projected new Raw rating
1200.7
Projected new Weighed rating
1200.2
Projected new Weighted performance
0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)
1200.7
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1200.7
Projected new floor
700.7
Projected new K-facor
36
Raw rating
=Current rating,
Weighted rating (WR)
Weighted average of current/new Raw rating + last 23 published Raw ratings),
Weighted performance (WP)
=Weighted average of last 5 tournaments
Curent Raw rating
1200.0
Curent Weighted rating
1200.0
Curent Weighted performance
0.0
Current official/published rating (highest between Raw, WR and WP)
1200.0
Current floor (min rating allowed)
700.7
Current highest rating achieved
1200.0
Current K-factor
36
Games played this month
0
Score (S)
0.0
Expected score (We)
0.00
Difference (S-We)
0.00
Current Raw change (no limits, including tournament time weight)
0.0
Current min/max change allowed (with limits)
±165.8
Current Raw change used (final)
0.0
Projected new Raw rating
1200.0
Projected new Weighed rating
1200.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)
1200.0
Projected effective change (new Official - current Official)
=0.0
Projected new highest rating
1200.0
Projected new floor
700.7
Projected new K-facor
36
Tournaments
History
Did not participate this month.
#
Tournament
Start
End
Host
Type
Time
Weight
Rns
Gms
Scr
Main
Type
Analysis
1
NWU Super 16 2024
2024/04/19
2024/04/19
Gert Sibande (MGS)
Rapid
30
0.60
6
6
3.0
1185.4
1200.0
Analysis
#
Tournament
Start
End
Host
Type
Time
Weight
Rounds
Games
Score
Main
Type
Analysis
6
NWU Super 16 2024
2024/04/19
2024/04/19
Gert Sibande (MGS)
Rapid
30
0.60
6
6
3.0
1185.4
1200.0
Analysis
5
2020 Wynie Robbertse Open Chess Tournament (U14)
2020/03/07
2020/03/07
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1200.6
1195.1
Analysis
4
2019 South African Junior Team Championships (U12E)
2020/01/04
2020/01/08
4 Knights (4K)
Standard
120
1.00
7
7
3.5
1206.7
1204.1
Analysis
3
2019 TC SAJCC Prep Tournament (B)
2019/11/30
2019/11/30
Tshwane (GTP)
Standard
60
0.83
5
5
2.0
1231.2
1237.2
Analysis
2
2019 D3 Team League (U11)
2019/07/20
2019/07/20
Tshwane (GTP)
Standard
60
0.83
5
2
2.0
1201.3
1201.2
Analysis
1
Wonderboom Interhuis 2019 (U11)
2019/05/04
2019/05/04
Tshwane (GTP)
Standard
60
0.83
5
5
3.0
1200.0
1200.0
Analysis
Game History
History
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
6
3
0
3
3.0
50.0
0.0
1234.4
1234.4
White
4
2
0
2
2.0
50.0
0.0
1247.3
1247.3
Black
2
1
0
1
1.0
50.0
0.0
1208.5
1208.5
Standard
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Rapid
All
6
3
0
3
3.0
50.0
0.0
1234.4
1234.4
White
4
2
0
2
2.0
50.0
0.0
1247.3
1247.3
Black
2
1
0
1
1.0
50.0
0.0
1208.5
1208.5
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Colour
Games
Wins
Draws
Losses
Score
%
Dp
Aor
Perform
Main
All
30
15
1
14
15.5
51.7
14.2
1184.0
1198.2
White
16
9
0
7
9.0
56.3
53.1
1176.3
1229.5
Black
14
6
1
7
6.5
46.4
-30.4
1192.8
1162.4
Standard
All
24
12
1
11
12.5
52.1
17.7
1171.4
1189.1
White
12
7
0
5
7.0
58.3
70.8
1152.7
1223.5
Black
12
5
1
6
5.5
45.8
-35.4
1190.1
1154.7
Rapid
All
6
3
0
3
3.0
50.0
0.0
1234.4
1234.4
White
4
2
0
2
2.0
50.0
0.0
1247.3
1247.3
Black
2
1
0
1
1.0
50.0
0.0
1208.5
1208.5
Blitz
All
0
0
0
0
0.0
0.0
0.0
0.0
0.0
White
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Black
0
0
0
0
0.0
0.0
0.0
0.0
0.0
Top 20 opponents most often played
#
Chess SA id
Name
Games
Score
Wins
Draws
Losses
%
Aor
Dp
Perform
View
1
1080107166
Oosthuizen, K (Kagan)
2
1.0
1
0
1
50.0
1215.9
0.0
1215.9
View list
2
2080109190
Huang, K (Kayleen)
1
1.0
1
0
0
100.0
1206.7
425.0
1631.7
View list
3
2070115594
Grahan, C (Chie-Ann)
1
1.0
1
0
0
100.0
1200.6
425.0
1625.6
View list
4
1090097516
Frier, E (Edwin)
1
1.0
1
0
0
100.0
1206.7
425.0
1631.7
View list
5
1060113138
Du Randt, Z (Zack)
1
1.0
1
0
0
100.0
1185.4
425.0
1610.4
View list
6
2080115592
Joubert, D (Done)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
7
1080097365
Kriel, D (Devin)
1
1.0
1
0
0
100.0
1185.4
425.0
1610.4
View list
8
1080109131
Klopper, J (Jadin)
1
1.0
1
0
0
100.0
1185.4
425.0
1610.4
View list
9
1090116747
Mnisis, G (George)
1
1.0
1
0
0
100.0
1201.3
425.0
1626.3
View list
10
209082445
Mathabatha, N (Naledi)
1
1.0
1
0
0
100.0
1206.7
425.0
1631.7
View list
11
1070099817
Lujiza, K (Keitumetse)
1
1.0
1
0
0
100.0
1200.6
425.0
1625.6
View list
12
1090100050
Louw, U (Ulrich)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
13
1080116760
Lindokuhle, M (Mahamba)
1
1.0
1
0
0
100.0
1201.3
425.0
1626.3
View list
14
1090115591
Mokrane, M (Maxime)
1
1.0
1
0
0
100.0
1200.0
425.0
1625.0
View list
15
109095317
Olivier, BM (Barnard)
1
1.0
1
0
0
100.0
1231.2
425.0
1656.2
View list
16
108089379
Olivier, J (Juvandre)
1
0.5
0
1
0
50.0
1206.7
0.0
1206.7
View list
17
206090393
Mokoena, GP (Gonase)
1
0.0
0
0
1
0.0
1231.2
-425.0
806.2
View list
18
108090548
Lewaks, S (Shaundre)
1
0.0
0
0
1
0.0
1206.7
-425.0
781.7
View list
19
108086541
Louw, R (Raynor)
1
0.0
0
0
1
0.0
1200.6
-425.0
775.6
View list
20
108077127
Lotz, L (Leanu)
1
0.0
0
0
1
0.0
1206.7
-425.0
781.7
View list