Player Page

Kooy, B (Bertu)
Dob: 2008/10/02 (U18)
Gender: Male
Chess SA id: 1080155580
FIDE id:
Region: Ekurhuleni (GE)
Citizen: RSA
Title(s):
Last active: 2023/09/16 (241 days ago)
Ratings
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 rating1274.9
Curent Weighted rating1254.1
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1274.9
Current floor (min rating allowed)782.8
Current highest rating achieved1282.8
Current K-factor36
Games played this month0
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)±149.0
Current Raw change used (final)0.0
Projected new Raw rating1274.9
Projected new Weighed rating1257.2
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1274.9
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1282.8
Projected new floor782.8
Projected new K-facor36
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 rating1280.7
Curent Weighted rating1255.6
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1280.7
Current floor (min rating allowed)780.7
Current highest rating achieved1280.7
Current K-factor36
Games played this month0
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)±147.8
Current Raw change used (final)0.0
Projected new Raw rating1280.7
Projected new Weighed rating1259.1
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1280.7
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1280.7
Projected new floor780.7
Projected new K-facor36
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 rating1204.3
Curent Weighted rating1203.4
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1204.3
Current floor (min rating allowed)704.3
Current highest rating achieved1204.3
Current K-factor36
Games played this month0
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)±164.8
Current Raw change used (final)0.0
Projected new Raw rating1204.3
Projected new Weighed rating1203.5
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1204.3
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1204.3
Projected new floor704.3
Projected new K-facor36
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 rating1183.4
Curent Weighted rating1190.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1190.0
Current floor (min rating allowed)704.3
Current highest rating achieved1200.0
Current K-factor36
Games played this month0
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)±169.8
Current Raw change used (final)0.0
Projected new Raw rating1183.4
Projected new Weighed rating1189.2
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1189.2
Projected effective change (new Official - current Official)-0.8
Projected new highest rating1200.0
Projected new floor704.3
Projected new K-facor36
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
4 Helpmekaar Kollege Blitz Chess Invitational Sep 2023 2023/09/16 2023/09/16 Johannesburg Metro (GJM) Blitz 8 0.25 9 8 4.0 1282.8 1200.0 Analysis
3 2023 Gauteng Top Schools (U15 Mixed) 2023/08/19 2023/08/19 West Rand (GWR) Standard 60 0.83 5 5 3.0 1271.7 1267.0 Analysis
2 ThinkChess Tournament 29 July 2023 2023/07/29 2023/07/29 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1220.3 1200.0 Analysis
1 Gauteng Open Arnold Classic 2023 (U16) 2023/05/19 2023/05/19 Tshwane (GTP) Rapid 30 0.60 5 5 3.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main 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
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 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
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 23 14 0 9 14.0 60.9 92.4 1235.1 1327.4
White 11 8 0 3 8.0 72.7 193.2 1248.7 1441.9
Black 12 6 0 6 6.0 50.0 0.0 1222.5 1222.5
Standard All 10 7 0 3 7.0 70.0 170.0 1255.1 1425.1
White 5 5 0 0 5.0 100.0 425.0 1264.6 1689.6
Black 5 2 0 3 2.0 40.0 -85.0 1245.6 1160.6
Rapid All 5 3 0 2 3.0 60.0 85.0 1269.5 1354.5
White 2 1 0 1 1.0 50.0 0.0 1326.3 1326.3
Black 3 2 0 1 2.0 66.7 141.7 1231.6 1373.3
Blitz All 8 4 0 4 4.0 50.0 0.0 1188.5 1188.5
White 4 2 0 2 2.0 50.0 0.0 1190.0 1190.0
Black 4 2 0 2 2.0 50.0 0.0 1187.0 1187.0
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1090161988 Akaloo, D (Deya) 1 1.0 1 0 0 100.0 1282.8 425.0 1707.8 View list
2 110089335 De Lange, B (Bester) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
3 2060138254 Coulter, J (Justine) 1 1.0 1 0 0 100.0 1282.8 425.0 1707.8 View list
4 1080141600 Monaledi, O (Otsile) 1 1.0 1 0 0 100.0 1271.7 425.0 1696.7 View list
5 1100152477 Mohamed, A (Aram) 1 1.0 1 0 0 100.0 1220.3 425.0 1645.3 View list
6 1030143528 Thimane, S (Siyabonga) 1 1.0 1 0 0 100.0 1271.7 425.0 1696.7 View list
7 1140148614 Subroyen, J (Jeevesh) 1 1.0 1 0 0 100.0 1220.3 425.0 1645.3 View list
8 1100145922 Sotheni, L (Lusiba) 1 1.0 1 0 0 100.0 1282.8 425.0 1707.8 View list
9 1130140204 Sehloho, T (Thandolwethu) 1 1.0 1 0 0 100.0 1220.3 425.0 1645.3 View list
10 109086017 Roetz, K (Kyle) 1 1.0 1 0 0 100.0 1282.8 425.0 1707.8 View list
11 1090155624 Rajah, S (Saahil) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
12 1130158075 Popat, R (Rey) 1 1.0 1 0 0 100.0 1220.3 425.0 1645.3 View list
13 1080161103 Van Heerden, F (Frederik) 1 1.0 1 0 0 100.0 1271.7 425.0 1696.7 View list
14 1100155642 Whitehead, J (Jonathan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
15 1080155639 Vallabh, K (Kavi) 1 0.0 0 0 1 0.0 1282.8 -425.0 857.8 View list
16 1090107165 Oosthuizen, L (Ludrick) 1 0.0 0 0 1 0.0 1271.7 -425.0 846.7 View list
17 1080159056 Prinsloo, G (Gareth) 1 0.0 0 0 1 0.0 1271.7 -425.0 846.7 View list
18 1090154876 Kleynhans, R (Ruan) 1 0.0 0 0 1 0.0 1282.8 -425.0 857.8 View list
19 108079040 Gruenenfelder, S (Stiaan) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
20 1080107799 Du Toit, J (Jaunre) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list