Player Page

Roos, J (Josua)
Dob: 2005/02/06 (U20)
Gender: Male
Chess SA id: 105078453
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2020/02/22 (1671 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 rating1005.5
Current Weighted rating1005.5
Current Weighted performance454.0
Current official/published rating (highest between Raw, WR and WP)1005.5
Current highest rating achieved1005.5
Current floor (min rating allowed)505.5
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)±218.8
Current Raw change used (final)0.0
Projected new Raw rating1005.5
Projected new Weighed rating925.1
Projected new Weighted performance454.0
Projected new final Raw rating (if new WP > new Raw)1005.5
Projected new highest rating1005.5
Projected new floor505.5
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1005.5
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 rating741.7
Current Weighted rating729.7
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)741.7
Current highest rating achieved741.7
Current floor (min rating allowed)500.0
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)±318.6
Current Raw change used (final)0.0
Projected new Raw rating741.7
Projected new Weighed rating671.9
Projected new Weighted performance152.8
Projected new final Raw rating (if new WP > new Raw)741.7
Projected new highest rating741.7
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)741.7
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 rating731.4
Current Weighted rating731.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)731.4
Current highest rating achieved731.4
Current floor (min rating allowed)500.0
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)±323.3
Current Raw change used (final)0.0
Projected new Raw rating731.4
Projected new Weighed rating672.9
Projected new Weighted performance365.1
Projected new final Raw rating (if new WP > new Raw)731.4
Projected new highest rating731.4
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)731.4
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 rating777.0
Current Weighted rating777.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)777.0
Current highest rating achieved777.0
Current floor (min rating allowed)500.0
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)±302.9
Current Raw change used (final)0.0
Projected new Raw rating777.0
Projected new Weighed rating714.8
Projected new Weighted performance264.7
Projected new final Raw rating (if new WP > new Raw)777.0
Projected new highest rating777.0
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)777.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 Paul Roos Blitz 2020 2020/02/22 2020/02/22 Cape Winelands (WCW) Blitz 5 0.18 9 9 4.5 749.5 628.6 Analysis
6 Cape Winelands Schools Trials 1 2020 (U15 Boys) 2020/02/15 2020/02/15 Cape Winelands (WCW) Rapid 30 0.60 6 6 3.5 749.5 592.6 Analysis
5 3rd ACL Chess Festival 2019 (Open) 2019/09/05 2019/09/05 Cape Town (WCT) Rapid 25 0.54 6 6 1.0 632.6 557.8 Analysis
4 Western Cape Top Schools 2019 (U15 Mix) 2019/08/31 2019/09/01 Cape Winelands (WCW) Standard 60 0.83 5 5 3.0 632.6 597.8 Analysis
3 2019 Western Province League (E) 2019/07/27 2019/08/10 Cape Town (WCT) Standard 60 0.83 9 2 2.0 566.5 518.2 Analysis
2 Cape Winelands Schools - Top Schools 2019 (U15 Mix) 2019/07/27 2019/07/27 Cape Winelands (WCW) Rapid 30 0.60 3 2 1.0 542.7 518.2 Analysis
1 Paul Roos Blitz 2019 2019/02/23 2019/02/23 Cape Winelands (WCW) Blitz 5 0.18 9 9 3.5 518.2 518.2 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 41 18 3 20 19.5 47.6 -20.7 1213.3 1192.6
White 20 10 0 10 10.0 50.0 0.0 1210.9 1210.9
Black 21 8 3 10 9.5 45.2 -40.5 1215.6 1175.2
Standard All 7 5 0 2 5.0 71.4 182.1 1180.9 1363.0
White 3 3 0 0 3.0 100.0 425.0 1191.2 1616.2
Black 4 2 0 2 2.0 50.0 0.0 1173.1 1173.1
Rapid All 16 6 1 9 6.5 40.6 -79.7 1229.0 1149.3
White 8 3 0 5 3.0 37.5 -106.3 1225.6 1119.3
Black 8 3 1 4 3.5 43.8 -53.1 1232.5 1179.4
Blitz All 18 7 2 9 8.0 44.4 -47.2 1212.1 1164.8
White 9 4 0 5 4.0 44.4 -47.2 1204.5 1157.3
Black 9 3 2 4 4.0 44.4 -47.2 1219.6 1172.4
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1040118458 Kleynhans, J (Jayden) 2 2.0 2 0 0 100.0 542.7 425.0 967.7 View list
2 105000068 Abrahams, B (Basheer) 2 0.0 0 0 2 0.0 542.7 -425.0 117.7 View list
3 105049855 Nel, MD (Markus Daniel) 2 0.0 0 0 2 0.0 691.0 -425.0 266.0 View list
4 1050098001 Manus, G (Granville) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
5 106077650 Franzman, A (Archard) 1 1.0 1 0 0 100.0 632.6 425.0 1057.6 View list
6 103076866 Du Plessis, F (Francois) 1 1.0 1 0 0 100.0 518.2 425.0 943.2 View list
7 1050101973 Christians, M (Matthew) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
8 2060096538 Busuku, A (Alute) 1 1.0 1 0 0 100.0 566.5 425.0 991.5 View list
9 1060132365 Adler, K (Keano) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
10 2030107204 Osborne, N (Nicole) 1 1.0 1 0 0 100.0 632.6 425.0 1057.6 View list
11 2070106215 Rogers, M (Morgan) 1 1.0 1 0 0 100.0 566.5 425.0 991.5 View list
12 2100105918 Samuels, T (Tatum) 1 1.0 1 0 0 100.0 518.2 425.0 943.2 View list
13 1040106551 Sinzumusi, A (Ahmed) 1 1.0 1 0 0 100.0 632.6 425.0 1057.6 View list
14 1040106550 Sithole, C (Clyde) 1 1.0 1 0 0 100.0 518.2 425.0 943.2 View list
15 208087936 Skippers, R (Robyn) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
16 1060132447 Swartbooi, L (Liyabukwa) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
17 1060096732 Van Tonder, W (Wium) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
18 1050108687 Verhoog, W (Walken) 1 1.0 1 0 0 100.0 749.5 425.0 1174.5 View list
19 1050118876 Volschenk, AL (Alexander Louw) 1 1.0 1 0 0 100.0 632.6 425.0 1057.6 View list
20 103000074 Abrahams, CJ (Chad) 1 0.5 0 1 0 50.0 518.2 0.0 518.2 View list