Player Page

Crookes, J (Jonas)
Dob: 2005/09/26 (U20)
Gender: Male
Chess SA id: 105046624
FIDE id:
Region: Overberg (WOS)
Citizen: RSA
Title(s):
Last active: 2023/09/03 (326 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
Current Raw rating1464.2
Current Weighted rating1460.6
Current Weighted performance1267.4
Current official/published rating (highest between Raw, WR and WP)1464.2
Current highest rating achieved1473.3
Current floor (min rating allowed)973.3
Current K-factor32
Games played this month-4
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)±113.8
Current Raw change used (final)0.0
Projected new Raw rating1464.2
Projected new Weighed rating1344.1
Projected new Weighted performance1267.4
Projected new final Raw rating (if new WP > new Raw)1464.2
Projected new highest rating1473.3
Projected new floor973.3
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1464.2
Projected effective change (new Official - current Official)=0.0
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
Current Raw rating1449.3
Current Weighted rating1447.4
Current Weighted performance1279.6
Current official/published rating (highest between Raw, WR and WP)1449.3
Current highest rating achieved1471.7
Current floor (min rating allowed)971.7
Current K-factor32
Games played this month-4
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)±116.2
Current Raw change used (final)0.0
Projected new Raw rating1449.3
Projected new Weighed rating1331.7
Projected new Weighted performance1279.6
Projected new final Raw rating (if new WP > new Raw)1449.3
Projected new highest rating1471.7
Projected new floor971.7
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1449.3
Projected effective change (new Official - current Official)=0.0
s
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
Current Raw rating1338.9
Current Weighted rating1334.9
Current Weighted performance1174.3
Current official/published rating (highest between Raw, WR and WP)1338.9
Current highest rating achieved1354.0
Current floor (min rating allowed)854.0
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)±136.0
Current Raw change used (final)0.0
Projected new Raw rating1338.9
Projected new Weighed rating1229.1
Projected new Weighted performance1174.3
Projected new final Raw rating (if new WP > new Raw)1338.9
Projected new highest rating1354.0
Projected new floor854.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1338.9
Projected effective change (new Official - current Official)=0.0
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
Current Raw rating1177.1
Current Weighted rating1176.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1177.1
Current highest rating achieved1177.1
Current floor (min rating allowed)677.1
Current K-factor40
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)±171.3
Current Raw change used (final)0.0
Projected new Raw rating1177.1
Projected new Weighed rating1082.2
Projected new Weighted performance620.7
Projected new final Raw rating (if new WP > new Raw)1177.1
Projected new highest rating1177.1
Projected new floor677.1
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1177.1
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
41 Western Cape Top Schools 2023 (U18 Mixed) 2023/09/02 2023/09/03 Cape Winelands (WCW) Standard 60 0.83 6 5 3.0 1466.3 1457.6 Analysis
40 Overberg Top Schools 2023 (U15+U18) 2023/08/05 2023/08/05 Overberg (WOS) Standard 60 0.83 5 5 4.0 1451.2 1440.0 Analysis
39 Hermanus Rapid 2023 (B) 2023/04/22 2023/04/22 Overberg (WOS) Rapid 25 0.54 6 6 3.5 1440.3 1354.0 Analysis
38 Western Cape HS Individuals 2023 (U19 Boys) 2023/04/01 2023/04/02 Cape Town (WCT) Standard 60 0.83 6 5 3.0 1440.3 1420.5 Analysis
37 Overberg High School Closed 2023 (U19 Boys) 2023/03/25 2023/03/25 Overberg (WOS) Standard 60 0.83 5 5 4.0 1466.7 1447.1 Analysis
36 Western Cape Inter Regional 2023 (Junior Boys) 2023/03/18 2023/03/19 Eden District (WEG) Standard 90 0.94 5 4 0.5 1466.7 1447.1 Analysis
35 Western Cape Inter Regional 2023 (Blitz) 2023/03/17 2023/03/17 Eden District (WEG) Blitz 5 0.18 5 5 2.5 1466.7 1167.1 Analysis
34 Overberg High Schools Trails 2023 (U19) 2023/02/24 2023/02/24 Overberg (WOS) Rapid 15 0.39 5 5 4.0 1445.7 1271.6 Analysis
33 Overberg Schools Open Tournament 2023 (U18) 2023/02/11 2023/02/11 Overberg (WOS) Rapid 20 0.47 5 5 5.0 1445.7 1271.6 Analysis
32 OCF Youth Day Tournament 2022 (A) 2022/06/18 2022/06/18 Overberg (WOS) Rapid 15 0.39 5 5 4.0 1436.5 1247.5 Analysis
31 Western Cape Schools Chess 2022 (U18 Boys) 2022/05/07 2022/05/08 Eden District (WEG) Standard 65 0.85 6 6 3.5 1417.7 1431.7 Analysis
30 OCF Open 2022 (U18) 2022/04/09 2022/04/09 Overberg (WOS) Rapid 30 0.60 5 3 1.0 1440.5 1290.7 Analysis
29 Western Cape Inter Region Cup 2021 (Junior) 2022/03/04 2022/03/06 West Coast (WCU) Standard 90 0.94 5 5 1.0 1473.3 1471.7 Analysis
28 Western Cape Schools 2021 (U18 Boys) 2021/10/23 2021/10/23 Overberg (WOS) Rapid 35 0.66 5 5 3.0 1466.1 1283.5 Analysis
27 Overberg Schools Trials 2021 (U15+U18 Boys) 2021/09/18 2021/09/18 Overberg (WOS) Rapid 30 0.60 5 5 4.0 1465.7 1255.1 Analysis
26 Coast to Coast 2021 (U18) 2021/08/28 2021/08/28 West Coast (WCU) Rapid 30 0.60 6 6 4.5 1422.4 1190.7 Analysis
25 Coast to Coast 2021 (Blitz) 2021/08/27 2021/08/27 West Coast (WCU) Blitz 5 0.18 5 5 2.0 1422.4 1185.9 Analysis
24 OCF Club Champs 2021 (Seniors) 2021/06/05 2021/08/14 Overberg (WOS) Standard 60 0.83 10 10 9.0 1422.4 1427.2 Analysis
23 Gen Intercampus 2021 (U16) 2021/05/22 2021/05/22 Overberg (WOS) Standard 60 0.83 5 5 5.0 1385.3 1381.5 Analysis
22 Kleinmond Open 2021 (U18+Open) 2021/04/17 2021/04/17 Overberg (WOS) Standard 60 0.83 5 5 3.0 1381.7 1376.1 Analysis
123
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 215 135 14 66 142.0 66.0 136.4 1246.8 1383.2
White 112 72 10 30 77.0 68.8 159.4 1250.1 1409.5
Black 103 63 4 36 65.0 63.1 111.4 1243.2 1354.6
Standard All 160 99 10 51 104.0 65.0 127.5 1245.0 1372.5
White 83 53 8 22 57.0 68.7 158.7 1256.0 1414.8
Black 77 46 2 29 47.0 61.0 93.8 1233.0 1326.8
Rapid All 45 32 3 10 33.5 74.4 207.8 1214.8 1422.6
White 23 16 2 5 17.0 73.9 203.3 1194.0 1397.3
Black 22 16 1 5 16.5 75.0 212.5 1236.6 1449.1
Blitz All 10 4 1 5 4.5 45.0 -42.5 1419.8 1377.3
White 6 3 0 3 3.0 50.0 0.0 1382.7 1382.7
Black 4 1 1 2 1.5 37.5 -106.3 1475.5 1369.2
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 105060444 Edwards, B (Brandon) 5 5.0 5 0 0 100.0 1372.8 425.0 1797.8 View list
2 103052317 Mehnert, E (Emile) 5 5.0 5 0 0 100.0 1279.0 425.0 1704.0 View list
3 106091562 Joubert, A (Antonio) 4 4.0 4 0 0 100.0 1354.2 425.0 1779.2 View list
4 104089003 Minnie, T (Taylin) 4 4.0 4 0 0 100.0 1393.0 425.0 1818.0 View list
5 104068703 Marais, C (Cobus) 4 2.5 2 1 1 62.5 1307.4 106.3 1413.7 View list
6 1050118485 Du Toit, J (Jaywin) 4 2.0 2 0 2 50.0 1390.8 0.0 1390.8 View list
7 104085328 Mostert, R (Remi) 3 3.0 3 0 0 100.0 1456.1 425.0 1881.1 View list
8 106068755 Tyindi, L (Luvuyo) 3 3.0 3 0 0 100.0 1369.8 425.0 1794.8 View list
9 1980102793 Booi, O (Ocean) 3 2.5 2 1 0 83.3 1350.6 283.3 1634.0 View list
10 103048759 Heynse, C (Christiano) 3 2.5 2 1 0 83.3 1408.8 283.3 1692.1 View list
11 106095776 Higham, E (Ethan) 3 2.5 2 1 0 83.3 1285.2 283.3 1568.5 View list
12 106066235 Fillis, J (Jordan) 3 2.0 2 0 1 66.7 1422.4 141.7 1564.1 View list
13 1060138411 Harmse, D (Deon) 3 1.0 1 0 2 33.3 1445.8 -141.7 1304.1 View list
14 1060099677 Njokweni, L (Llyabona) 3 0.5 0 1 2 16.7 1437.2 -283.3 1153.8 View list
15 105077311 Brander, WWM (Waylon) 3 0.0 0 0 3 0.0 1441.6 -425.0 1016.6 View list
16 174086674 Badenhorst, A (Allen) 2 2.0 2 0 0 100.0 1324.1 425.0 1749.1 View list
17 106071972 Davel, M (Migael) 2 2.0 2 0 0 100.0 1337.4 425.0 1762.4 View list
18 103091611 Jansen, A (Aderique) 2 2.0 2 0 0 100.0 1256.1 425.0 1681.1 View list
19 105088998 Jansen, AI (Alfonso) 2 2.0 2 0 0 100.0 1355.8 425.0 1780.8 View list
20 183060789 Johnson, A (Azriel) 2 2.0 2 0 0 100.0 1380.2 425.0 1805.2 View list