Player Page

Roos, J (Jacobus)
Dob: 2009/08/19 (U16)
Gender: Male
Chess SA id: 1090149218
FIDE id:
Region: West Rand (GWR)
Citizen: RSA
Title(s):
Last active: 2023/02/04 (660 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 rating1133.9
Current Weighted rating1134.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1134.6
Current highest rating achieved1133.9
Current floor (min rating allowed)633.9
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)±182.2
Current Raw change used (final)0.0
Projected new Raw rating1133.9
Projected new Weighed rating1043.4
Projected new Weighted performance212.2
Projected new final Raw rating (if new WP > new Raw)1133.9
Projected new highest rating1133.9
Projected new floor633.9
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1133.9
Projected effective change (new Official - current Official)-0.7
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 rating1120.4
Current Weighted rating1121.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1121.2
Current highest rating achieved1120.4
Current floor (min rating allowed)620.4
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)±185.7
Current Raw change used (final)0.0
Projected new Raw rating1120.4
Projected new Weighed rating1031.0
Projected new Weighted performance212.2
Projected new final Raw rating (if new WP > new Raw)1120.4
Projected new highest rating1120.4
Projected new floor620.4
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1120.4
Projected effective change (new Official - current Official)-0.8
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
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 rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
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
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
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 rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
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
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
1 2023 West Rand Open (Rooks) 2023/02/04 2023/02/04 West Rand (GWR) Standard 60 0.83 5 5 1.0 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 5 1 0 4 1.0 20.0 -255.0 1077.6 822.6
White 2 1 0 1 1.0 50.0 0.0 1200.0 1200.0
Black 3 0 0 3 0.0 0.0 -425.0 996.0 571.0
Standard All 5 1 0 4 1.0 20.0 -255.0 1077.6 822.6
White 2 1 0 1 1.0 50.0 0.0 1200.0 1200.0
Black 3 0 0 3 0.0 0.0 -425.0 996.0 571.0
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1090149209 Konopi, K (Keaobaka) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
2 2090136706 Moabi, O (Olerato) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
3 1090149210 Mazibuko, M (Mduduzi) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
4 1090139688 Khambani, K (Khumo) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
5 106079487 Collins, JP (Johannes) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list