Player Page

Davidse, Z (Zac)
Dob: 2011/03/23 (U14)
Gender: Male
Chess SA id: 1110149777
FIDE id:
Region: Cape Winelands (WCW)
Citizen: RSA
Title(s):
Last active: 2024/02/10 (100 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 rating1092.7
Curent Weighted rating1128.7
Curent Weighted performance881.0
Current official/published rating (highest between Raw, WR and WP)1128.7
Current floor (min rating allowed)667.5
Current highest rating achieved1167.5
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)±193.2
Current Raw change used (final)0.0
Projected new Raw rating1092.7
Projected new Weighed rating1124.0
Projected new Weighted performance881.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1124.0
Projected effective change (new Official - current Official)-4.7
Projected new highest rating1167.5
Projected new floor667.5
Projected new K-facor40
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 rating1162.4
Curent Weighted rating1166.9
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1166.9
Current floor (min rating allowed)662.4
Current highest rating achieved1162.4
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)±174.9
Current Raw change used (final)0.0
Projected new Raw rating1162.4
Projected new Weighed rating1165.9
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1165.9
Projected effective change (new Official - current Official)-1.0
Projected new highest rating1162.4
Projected new floor662.4
Projected new K-facor40
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 rating1076.0
Curent Weighted rating1120.5
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1120.5
Current floor (min rating allowed)658.8
Current highest rating achieved1158.8
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)±197.9
Current Raw change used (final)0.0
Projected new Raw rating1076.0
Projected new Weighed rating1114.7
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1114.7
Projected effective change (new Official - current Official)-5.8
Projected new highest rating1158.8
Projected new floor658.8
Projected new K-facor40
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)658.8
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 floor658.8
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 Cape Winelands Schools - PS Trials 1 2024 (U13 Boys) 2024/02/10 2024/02/10 Cape Winelands (WCW) Rapid 35 0.66 6 6 2.0 1099.6 1072.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
5 Cape Winelands Schools - PS Trials 1 2024 (U13 Boys) 2024/02/10 2024/02/10 Cape Winelands (WCW) Rapid 35 0.66 6 6 2.0 1099.6 1072.0 Analysis
4 Worcester Knock-Out 2023 (U13 Boys) 2023/10/14 2023/10/14 Cape Winelands (WCW) Rapid 30 0.60 6 5 0.0 1152.6 1158.8 Analysis
3 Stellenbosch Primary Chess Tournament 2023 (U14) 2023/08/19 2023/08/19 Cape Winelands (WCW) Rapid 30 0.60 6 6 3.0 1148.3 1152.4 Analysis
2 Rhenish Primary Tournament 2023 (U14) 2023/05/13 2023/05/13 Cape Winelands (WCW) Rapid 30 0.60 6 5 1.5 1167.5 1200.0 Analysis
1 Cape Winelands Schools Chess - Trials 1 2023 (U13 Boys) 2023/02/18 2023/02/18 Cape Winelands (WCW) Standard 60 0.83 5 5 1.5 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 6 2 0 4 2.0 33.3 -141.7 1203.9 1062.2
White 3 2 0 1 2.0 66.7 141.7 1200.0 1341.7
Black 3 0 0 3 0.0 0.0 -425.0 1207.7 782.7
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 6 2 0 4 2.0 33.3 -141.7 1203.9 1062.2
White 3 2 0 1 2.0 66.7 141.7 1200.0 1341.7
Black 3 0 0 3 0.0 0.0 -425.0 1207.7 782.7
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 27 7 2 18 8.0 29.6 -173.1 1198.2 1025.0
White 14 5 2 7 6.0 42.9 -60.7 1194.5 1133.8
Black 13 2 0 11 2.0 15.4 -294.2 1202.1 907.9
Standard All 5 1 1 3 1.5 30.0 -170.0 1210.0 1040.0
White 3 0 1 2 0.5 16.7 -283.3 1212.3 929.0
Black 2 1 0 1 1.0 50.0 0.0 1206.4 1206.4
Rapid All 22 6 1 15 6.5 29.5 -173.9 1195.5 1021.6
White 11 5 1 5 5.5 50.0 0.0 1189.7 1189.7
Black 11 1 0 10 1.0 9.1 -347.7 1201.3 853.6
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 1120192842 Muvumbi, L (Leeroy) 1 1.0 1 0 0 100.0 1099.6 425.0 1524.6 View list
2 1110161522 Adams, T (Tariq) 1 1.0 1 0 0 100.0 1148.3 425.0 1573.3 View list
3 1110118934 Boshoff, M (Matthew) 1 1.0 1 0 0 100.0 1148.3 425.0 1573.3 View list
4 2110139459 Kadji, S (Somila) 1 1.0 1 0 0 100.0 1167.5 425.0 1592.5 View list
5 1120192833 Jeacocks, E (Ezhekiel) 1 1.0 1 0 0 100.0 1099.6 425.0 1524.6 View list
6 1110149798 Van Der Walt, S (Sebastian) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
7 1110161375 Zulu, L (Lwazi) 1 1.0 1 0 0 100.0 1148.3 425.0 1573.3 View list
8 1100113426 Alford, N (Nathan) 1 0.5 0 1 0 50.0 1167.5 0.0 1167.5 View list
9 1100113421 Hamann, L (Louis) 1 0.5 0 1 0 50.0 1200.0 0.0 1200.0 View list
10 1090146861 Sindayihebura, J (Joshua) 1 0.0 0 0 1 0.0 1167.5 -425.0 742.5 View list
11 1110139444 Senti, S (Samuel) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
12 2110113425 Saul, R (Rebekah) 1 0.0 0 0 1 0.0 1148.3 -425.0 723.3 View list
13 1120191726 Ralaivaosaona, T (Tendrisoa Manoharay) 1 0.0 0 0 1 0.0 1099.6 -425.0 674.6 View list
14 1110132436 Parson, A (Alex) 1 0.0 0 0 1 0.0 1148.3 -425.0 723.3 View list
15 1100148002 Mostert, R (Ruan) 1 0.0 0 0 1 0.0 1152.6 -425.0 727.6 View list
16 1110132074 Kwabe, A (Awonke) 1 0.0 0 0 1 0.0 1167.5 -425.0 742.5 View list
17 1110161529 Kemp, F (Francois) 1 0.0 0 0 1 0.0 1148.3 -425.0 723.3 View list
18 1100137579 Fourie, X (Xavier) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
19 1120161518 De Waal, P (Pieter) 1 0.0 0 0 1 0.0 1099.6 -425.0 674.6 View list
20 1110140724 Chuang, G (Gareth) 1 0.0 0 0 1 0.0 1167.5 -425.0 742.5 View list