Player Page

Witbooi, J (Juan)
Dob: 2007/09/28 (U18)
Gender: Male
Chess SA id: 1070111524
FIDE id:
Region: Overberg (WOS)
Citizen: RSA
Title(s):
Last active: 2023/09/03 (255 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 rating1275.3
Curent Weighted rating1278.4
Curent Weighted performance1107.6
Current official/published rating (highest between Raw, WR and WP)1278.4
Current floor (min rating allowed)823.4
Current highest rating achieved1323.4
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)±148.9
Current Raw change used (final)0.0
Projected new Raw rating1275.3
Projected new Weighed rating1277.9
Projected new Weighted performance1107.6
Projected new official/published rating (highest between new Raw, new WR and new WP)1277.9
Projected effective change (new Official - current Official)-0.5
Projected new highest rating1323.4
Projected new floor823.4
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 rating1263.8
Curent Weighted rating1267.1
Curent Weighted performance1019.4
Current official/published rating (highest between Raw, WR and WP)1267.1
Current floor (min rating allowed)824.3
Current highest rating achieved1324.3
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)±151.4
Current Raw change used (final)0.0
Projected new Raw rating1263.8
Projected new Weighed rating1266.6
Projected new Weighted performance1019.4
Projected new official/published rating (highest between new Raw, new WR and new WP)1266.6
Projected effective change (new Official - current Official)-0.5
Projected new highest rating1324.3
Projected new floor824.3
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 rating1238.8
Curent Weighted rating1234.1
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1238.8
Current floor (min rating allowed)738.8
Current highest rating achieved1238.8
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)±156.9
Current Raw change used (final)0.0
Projected new Raw rating1238.8
Projected new Weighed rating1235.2
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1238.8
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1238.8
Projected new floor738.8
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 rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)738.8
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)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1200.0
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 rating1200.0
Projected new floor738.8
Projected new K-facor36
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
12 Western Cape Top Schools 2023 (U18 Mixed) 2023/09/02 2023/09/03 Cape Winelands (WCW) Standard 60 0.83 6 5 1.0 1323.4 1324.3 Analysis
11 Overberg Top Schools 2023 (U15+U18) 2023/08/05 2023/08/05 Overberg (WOS) Standard 60 0.83 5 5 5.0 1266.9 1251.9 Analysis
10 Overberg High School Closed 2023 (U17 Boys) 2023/03/25 2023/03/25 Overberg (WOS) Standard 60 0.83 5 5 2.0 1289.9 1281.4 Analysis
9 Overberg High Schools Trails 2023 (U17) 2023/02/24 2023/02/24 Overberg (WOS) Rapid 15 0.39 5 5 3.0 1291.4 1200.0 Analysis
8 Overberg Schools Open Tournament 2023 (U16) 2023/02/11 2023/02/11 Overberg (WOS) Rapid 20 0.47 5 5 3.0 1291.4 1200.0 Analysis
7 OCF Chess Tournament 2 2020 (U14) 2020/02/01 2020/02/01 Overberg (WOS) Standard 60 0.83 5 5 4.5 1236.9 1227.8 Analysis
6 2019 South African Junior Team Championships (U14D) 2020/01/04 2020/01/08 4 Knights (4K) Standard 120 1.00 7 7 3.0 1302.1 1293.7 Analysis
5 2019 Western Cape Club Championship (C) 2019/10/25 2019/10/27 Overberg (WOS) Standard 65 0.85 5 5 4.0 1234.4 1233.1 Analysis
4 Western Cape Top Schools 2019 (U13 Mix) 2019/08/31 2019/09/01 Cape Winelands (WCW) Standard 60 0.83 5 5 2.0 1260.7 1268.4 Analysis
3 Overberg Top Schools 2019 (U13) 2019/07/20 2019/07/20 Overberg (WOS) Standard 60 0.83 5 5 5.0 1185.7 1178.4 Analysis
2 Western Cape Schools Individuals 2019 (U13 Boys) 2019/05/18 2019/05/19 Eden District (WEG) Standard 60 0.83 6 6 3.0 1196.7 1192.4 Analysis
1 Trial 2 Teddy/Toy Tournament 2019 (U14) 2019/04/06 2019/04/06 Overberg (WOS) Standard 60 0.83 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 68 43 1 24 43.5 64.0 118.7 1180.6 1299.3
White 35 26 0 9 26.0 74.3 206.4 1187.1 1393.5
Black 33 17 1 15 17.5 53.0 25.8 1173.6 1199.4
Standard All 58 37 1 20 37.5 64.7 124.6 1177.3 1301.9
White 30 23 0 7 23.0 76.7 226.7 1179.0 1405.6
Black 28 14 1 13 14.5 51.8 15.2 1175.5 1190.7
Rapid All 10 6 0 4 6.0 60.0 85.0 1199.4 1284.4
White 5 3 0 2 3.0 60.0 85.0 1235.9 1320.9
Black 5 3 0 2 3.0 60.0 85.0 1162.9 1247.9
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 idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1070100613 Gabriels, J (Jawon) 4 3.0 3 0 1 75.0 1208.0 212.5 1420.5 View list
2 1060116655 Baatjies, L (Lindrynn) 2 2.0 2 0 0 100.0 1185.7 425.0 1610.7 View list
3 1070102790 Beyers, D (Donatello) 2 2.0 2 0 0 100.0 1185.7 425.0 1610.7 View list
4 208091547 Hendricks, J (Jacquin) 2 2.0 2 0 0 100.0 1185.7 425.0 1610.7 View list
5 1070100617 Stuurman, L (Leilani) 2 2.0 2 0 0 100.0 1185.7 425.0 1610.7 View list
6 1060150675 Latier, L (Lushib) 2 1.0 1 0 1 50.0 1291.4 0.0 1291.4 View list
7 208084107 Beveridge, TG (Talitha) 1 1.0 1 0 0 100.0 1236.9 425.0 1661.9 View list
8 2090116649 Bekker, A (Angelica) 1 1.0 1 0 0 100.0 1234.4 425.0 1659.4 View list
9 1070118850 Baans, C (Coben) 1 1.0 1 0 0 100.0 1260.7 425.0 1685.7 View list
10 1070099823 Botha, J (Joshua) 1 1.0 1 0 0 100.0 1236.9 425.0 1661.9 View list
11 106076810 Botha, D (Dale) 1 1.0 1 0 0 100.0 1196.7 425.0 1621.7 View list
12 107056863 Boucher, Z (Zander) 1 1.0 1 0 0 100.0 1302.1 425.0 1727.1 View list
13 107088986 Du Toit, M (Marlo) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
14 1060106598 Du Plessis, LJ (Lodewyk Johannes) 1 1.0 1 0 0 100.0 1266.9 425.0 1691.9 View list
15 1080150671 Davids, A (Abdaab) 1 1.0 1 0 0 100.0 1291.4 425.0 1716.4 View list
16 2080152207 Darby, M (Mande-Marie) 1 1.0 1 0 0 100.0 1266.9 425.0 1691.9 View list
17 1060152224 Damons, K (Keagon) 1 1.0 1 0 0 100.0 1289.9 425.0 1714.9 View list
18 2070111344 Claassen, R (Rhoda-Leigh) 1 1.0 1 0 0 100.0 1236.9 425.0 1661.9 View list
19 107091560 Fourie, T (Tristan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
20 2080159254 Galant, K (Keira) 1 1.0 1 0 0 100.0 1266.9 425.0 1691.9 View list