Player Page

Isaacs, WS (William)
Dob: 1964/08/28 (Adult)
Gender: Male
Chess SA id: 164013218
FIDE id:
Region: Cape Winelands (WCW)
Citizen: RSA
Title(s):
Last active: 2024/03/09 (127 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 rating1340.7
Current Weighted rating1347.3
Current Weighted performance1210.3
Current official/published rating (highest between Raw, WR and WP)1347.3
Current highest rating achieved1416.4
Current floor (min rating allowed)916.4
Current K-factor32
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)±135.7
Current Raw change used (final)0.0
Projected new Raw rating1340.7
Projected new Weighed rating1239.1
Projected new Weighted performance1210.3
Projected new final Raw rating (if new WP > new Raw)1340.7
Projected new highest rating1416.4
Projected new floor916.4
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1340.7
Projected effective change (new Official - current Official)-6.6
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 rating1337.6
Current Weighted rating1352.7
Current Weighted performance1210.3
Current official/published rating (highest between Raw, WR and WP)1352.7
Current highest rating achieved1421.7
Current floor (min rating allowed)921.7
Current K-factor32
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)±136.3
Current Raw change used (final)0.0
Projected new Raw rating1337.6
Projected new Weighed rating1243.4
Projected new Weighted performance1210.3
Projected new final Raw rating (if new WP > new Raw)1337.6
Projected new highest rating1421.7
Projected new floor921.7
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1337.6
Projected effective change (new Official - current Official)-15.1
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 rating1275.2
Current Weighted rating1275.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1275.2
Current highest rating achieved1397.0
Current floor (min rating allowed)897.0
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)±149.0
Current Raw change used (final)0.0
Projected new Raw rating1275.2
Projected new Weighed rating1173.2
Projected new Weighted performance316.8
Projected new final Raw rating (if new WP > new Raw)1275.2
Projected new highest rating1397.0
Projected new floor897.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1275.2
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 rating1258.3
Current Weighted rating1258.3
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1258.3
Current highest rating achieved1397.0
Current floor (min rating allowed)897.0
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)±152.6
Current Raw change used (final)0.0
Projected new Raw rating1258.3
Projected new Weighed rating1157.6
Projected new Weighted performance258.7
Projected new final Raw rating (if new WP > new Raw)1258.3
Projected new highest rating1397.0
Projected new floor897.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1258.3
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
2 South African Braille Open 2024 2024/03/09 2024/03/09 Cape Winelands (WCW) Standard 60 0.83 5 5 3.5 1322.6 1318.7 Analysis
1 Cape Winelands - Marie Delport Memorial 2024 (Open) 2024/01/27 2024/01/28 Cape Winelands (WCW) Standard 70 0.87 6 6 3.0 1339.0 1341.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
18 South African Braille Open 2024 2024/03/09 2024/03/09 Cape Winelands (WCW) Standard 60 0.83 5 5 3.5 1322.6 1318.7 Analysis
17 Cape Winelands - Marie Delport Memorial 2024 (Open) 2024/01/27 2024/01/28 Cape Winelands (WCW) Standard 70 0.87 6 6 3.0 1339.0 1341.4 Analysis
16 2023 Western Cape Rural Cup (Open) 2023/12/09 2023/12/10 Cape Winelands (WCW) Standard 60 0.83 5 4 0.0 1365.3 1375.0 Analysis
15 Strategema 2023 (Open) 2023/05/13 2023/05/13 Cape Winelands (WCW) Standard 60 0.83 5 5 3.0 1366.4 1385.2 Analysis
14 Braille Top 8 2023 2023/03/20 2023/03/21 Cape Winelands (WCW) Standard 60 0.83 7 7 5.5 1350.0 1371.1 Analysis
13 SA Braille South 2023 2023/03/18 2023/03/19 Cape Winelands (WCW) Standard 90 0.94 5 5 2.5 1350.0 1371.1 Analysis
12 Marie Delport Memorial 2023 (Open) 2023/01/21 2023/01/21 Cape Winelands (WCW) Standard 70 0.87 6 6 4.0 1363.1 1395.7 Analysis
11 Western Cape Closed Championship 2022 (Prestige) 2022/09/24 2022/09/25 Cape Winelands (WCW) Standard 70 0.87 6 0 0.0 1363.1 1395.7 Analysis
10 WCCA Rural Cup 2022 (Open) 2022/08/13 2022/08/14 Overberg (WOS) Standard 60 0.83 5 4 3.0 1350.1 1387.1 Analysis
9 WCCA Rural Cup Blitz 2022 2022/07/12 2022/07/12 Overberg (WOS) Blitz 5 0.18 5 4 1.0 1358.8 1313.0 Analysis
8 SA Braille 2022 2022/04/16 2022/04/17 Cape Winelands (WCW) Standard 90 0.94 5 5 3.5 1354.9 1391.3 Analysis
7 Cape Winelands Open 2022 (Braille) 2022/02/12 2022/02/13 Cape Winelands (WCW) Standard 70 0.87 6 5 3.0 1373.0 1421.7 Analysis
6 Robertson Chess 2020 (Open) 2020/03/07 2020/03/07 Cape Winelands (WCW) Rapid 30 0.60 5 5 3.0 1380.5 1270.9 Analysis
5 Robertson Strategema 2019 (Open) 2019/10/05 2019/10/05 Cape Winelands (WCW) Rapid 30 0.60 5 5 2.0 1416.4 1313.0 Analysis
4 Braille Top 8 2019 2019/09/14 2019/09/15 Cape Winelands (WCW) Standard 90 0.94 7 7 4.5 1407.4 1413.4 Analysis
3 SA Braille Worcester 2019 2019/03/23 2019/03/24 Cape Winelands (WCW) Standard 90 0.94 5 5 4.0 1307.9 1307.6 Analysis
2 Braille Top 8 2019 2019/03/21 2019/03/22 Cape Winelands (WCW) Standard 90 0.94 7 7 6.0 1307.9 1307.6 Analysis
1 Sa Braille Worcester Open 2018 2018/04/27 2018/04/28 Cape Winelands (WCW) Standard 90 0.94 7 4 2.0 1313.0 1313.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 11 5 3 3 6.5 59.1 77.3 1240.6 1317.8
White 5 2 3 0 3.5 70.0 170.0 1255.5 1425.5
Black 6 3 0 3 3.0 50.0 0.0 1228.1 1228.1
Standard All 11 5 3 3 6.5 59.1 77.3 1240.6 1317.8
White 5 2 3 0 3.5 70.0 170.0 1255.5 1425.5
Black 6 3 0 3 3.0 50.0 0.0 1228.1 1228.1
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 89 50 7 32 53.5 60.1 86.0 1244.5 1330.5
White 44 26 5 13 28.5 64.8 125.6 1215.3 1340.9
Black 45 24 2 19 25.0 55.6 47.2 1273.1 1320.3
Standard All 75 44 7 24 47.5 63.3 113.3 1249.6 1363.0
White 37 22 5 10 24.5 66.2 137.8 1218.1 1356.0
Black 38 22 2 14 23.0 60.5 89.5 1280.3 1369.8
Rapid All 10 5 0 5 5.0 50.0 0.0 1204.5 1204.5
White 5 3 0 2 3.0 60.0 85.0 1181.1 1266.1
Black 5 2 0 3 2.0 40.0 -85.0 1227.9 1142.9
Blitz All 4 1 0 3 1.0 25.0 -212.5 1248.9 1036.4
White 2 1 0 1 1.0 50.0 0.0 1248.2 1248.2
Black 2 0 0 2 0.0 0.0 -425.0 1249.6 824.6
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 164032165 Richter, HL (Heinrich) 7 3.5 3 1 3 50.0 1354.3 0.0 1354.3 View list
2 179018022 Liebenberg, FW (Frederick) 7 2.0 2 0 5 28.6 1337.0 -182.1 1154.8 View list
3 171003456 Bresler, C (Conrad) 5 4.5 4 1 0 90.0 1350.1 340.0 1690.1 View list
4 268080006 Rossouw, J (Joan) 5 4.0 4 0 1 80.0 1357.5 255.0 1612.5 View list
5 145010473 Geyer, D (David) 5 2.5 2 1 2 50.0 1360.1 0.0 1360.1 View list
6 156005435 Conradie, AF (Abram) 4 3.0 3 0 1 75.0 1357.0 212.5 1569.5 View list
7 1910111421 Klue, CR (Christiaan Reue) 3 3.0 3 0 0 100.0 1363.1 425.0 1788.1 View list
8 144017748 Leonard, C (Clyde) 3 3.0 3 0 0 100.0 1342.8 425.0 1767.8 View list
9 275031506 Rahn, MC (Marlene) 3 3.0 3 0 0 100.0 1337.6 425.0 1762.6 View list
10 1710139908 Neethling, FJ (Francois Jacques) 3 2.0 1 2 0 66.7 1340.9 141.7 1482.5 View list
11 166018735 Lucas, M (Melvyn) 3 0.5 0 1 2 16.7 1356.7 -283.3 1073.4 View list
12 1940111420 Henning, J (Johan) 2 2.0 2 0 0 100.0 1394.7 425.0 1819.7 View list
13 1080137603 De Lange, R (Rhailihn) 2 2.0 2 0 0 100.0 1351.0 425.0 1776.0 View list
14 171036861 Swanepoel, K (Karel) 2 2.0 2 0 0 100.0 1307.9 425.0 1732.9 View list
15 160037650 Theunis, DP (Desmond) 2 1.0 1 0 1 50.0 1360.2 0.0 1360.2 View list
16 1080134436 Bosman, B (Burnito) 1 1.0 1 0 0 100.0 1358.8 425.0 1783.8 View list
17 195002545 Boois, A (Aser) 1 1.0 1 0 0 100.0 1350.1 425.0 1775.1 View list
18 291004879 Claassen, NA (Nadia) 1 1.0 1 0 0 100.0 1350.1 425.0 1775.1 View list
19 158003751 Brown, S (Sam) 1 1.0 1 0 0 100.0 1407.4 425.0 1832.4 View list
20 1060158346 Faro, H (Henson) 1 1.0 1 0 0 100.0 1339.0 425.0 1764.0 View list