Player Page

Greef, S (Schalk)
Dob: 2006/08/31 (U20)
Gender: Male
Chess SA id: 106060687
FIDE id: Greef
Region: West Rand (GWR)
Citizen: RSA
Title(s):
Last active: 2024/10/05 (47 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 rating1330.8
Current Weighted rating1329.3
Current Weighted performance1053.5
Current official/published rating (highest between Raw, WR and WP)1330.8
Current highest rating achieved1501.1
Current floor (min rating allowed)1001.1
Current K-factor32
Games played this month6
Score (S)2.0
Expected score (We)2.27
Difference (S-We)-0.22
Current Raw change (no limits, including tournament time weight)-7.2
Current min/max change allowed (with limits)±137.6
Current Raw change used (final)-7.2
Projected new Raw rating1323.6
Projected new Weighed rating1223.2
Projected new Weighted performance1148.3
Projected new final Raw rating (if new WP > new Raw)1323.6
Projected new highest rating1501.1
Projected new floor1001.1
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1323.6
Projected effective change (new Official - current Official)-7.2
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 rating1328.4
Current Weighted rating1326.7
Current Weighted performance1053.5
Current official/published rating (highest between Raw, WR and WP)1328.4
Current highest rating achieved1499.9
Current floor (min rating allowed)999.9
Current K-factor32
Games played this month6
Score (S)2.0
Expected score (We)2.42
Difference (S-We)-0.42
Current Raw change (no limits, including tournament time weight)-13.4
Current min/max change allowed (with limits)±138.1
Current Raw change used (final)-13.4
Projected new Raw rating1315.0
Projected new Weighed rating1220.8
Projected new Weighted performance1148.3
Projected new final Raw rating (if new WP > new Raw)1315.0
Projected new highest rating1499.9
Projected new floor999.9
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1315.0
Projected effective change (new Official - current Official)-13.4
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 rating1060.6
Current Weighted rating975.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1060.6
Current highest rating achieved1060.6
Current floor (min rating allowed)560.6
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)±202.2
Current Raw change used (final)0.0
Projected new Raw rating1060.6
Projected new Weighed rating903.1
Projected new Weighted performance249.5
Projected new final Raw rating (if new WP > new Raw)1060.6
Projected new highest rating1060.6
Projected new floor560.6
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1060.6
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 rating725.4
Current Weighted rating725.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)725.4
Current highest rating achieved739.0
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)±326.1
Current Raw change used (final)0.0
Projected new Raw rating725.4
Projected new Weighed rating667.4
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating739.0
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)725.4
Projected effective change (new Official - current Official)=0.0
Tournaments
Tournament: Paarl Boys' High Chess Festival 2024 (Elite)
Start: 2024/10/04  End: 2024/10/05  Host: WCW  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 6
Games: 6  Score: 2.0
Main rating: 1330.8  Rating gain/loss: -7.2
Type rating: 1328.4  Rating gain/loss: -13.4
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
1 Paarl Boys' High Chess Festival 2024 (Elite) 2024/10/04 2024/10/05 Cape Winelands (WCW) Standard 60 0.83 6 6 2.0 1330.8 1328.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
40 Paarl Boys' High Chess Festival 2024 (Elite) 2024/10/04 2024/10/05 Cape Winelands (WCW) Standard 60 0.83 6 6 2.0 1330.8 1328.4 Analysis
39 Paarl Boys High Chess Festival 2023 (Elite Division) 2023/10/13 2023/10/14 Cape Winelands (WCW) Standard 60 0.83 6 6 3.0 1327.6 1324.9 Analysis
38 D2 School League Finals 2023 (U19) 2023/07/22 2023/07/22 West Rand (GWR) Standard 60 0.83 5 5 3.0 1317.8 1313.1 Analysis
37 2022 South African Junior Team Chess Championships (U18 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 1.5 1358.8 1349.3 Analysis
36 JMC 3rd Trials 2022 (B) 2022/09/11 2022/09/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1369.7 1363.4 Analysis
35 2022 Gauteng Schools Team Championships (U19 Open) 2022/08/26 2022/08/26 Tshwane (GTP) Standard 60 0.83 5 4 1.0 1401.0 1401.8 Analysis
34 D2 School League Finals 2022 (U18) 2022/08/20 2022/08/20 West Rand (GWR) Standard 60 0.83 5 5 3.5 1401.0 1401.8 Analysis
33 JNW Helpmekaar 2022 (Challengers) 2022/07/09 2022/07/09 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1422.8 1429.3 Analysis
32 2022 Gauteng Interregion (U16 Open) 2022/02/26 2022/02/26 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1422.3 1433.5 Analysis
31 JMC Charterhouse Open 2022 (B) 2022/02/12 2022/02/12 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1422.3 1433.5 Analysis
30 2021 Milos Ristic Open (B) 2021/10/09 2021/10/09 Tshwane (GTP) Standard 60 0.83 5 4 2.0 1426.0 1442.1 Analysis
29 JMC Helpmekaar 2021 (U16) 2021/09/06 2021/09/06 Johannesburg Metro (GJM) Rapid 30 0.60 5 5 2.0 1449.0 725.4 Analysis
28 JNW Club - Trinityhouse Randpark Ridge Open 2020 (B) 2020/02/22 2020/02/22 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1439.2 1429.3 Analysis
27 2019 South African Junior Team Championships (U14B) 2020/01/04 2020/01/08 4 Knights (4K) Standard 120 1.00 7 7 4.0 1459.7 1447.2 Analysis
26 The Joburg Open 2019 (Masters) 2019/10/12 2019/10/12 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1501.1 1499.9 Analysis
25 GJM vs GE Inter Region 2019 (U14B) 2019/10/05 2019/10/05 Johannesburg Metro (GJM) Standard 60 0.83 5 5 1.5 1501.1 1499.9 Analysis
24 The King`s Cup League - Stage 2 2019 (B) 2019/09/07 2019/09/07 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.5 1411.8 1412.0 Analysis
23 2019 Gauteng School League Finals (U13 Open) 2019/08/23 2019/08/23 Tshwane (GTP) Standard 60 0.83 5 5 5.0 1212.6 1204.9 Analysis
22 D2 League Finals 2019 (U13 Mix) 2019/08/03 2019/08/03 West Rand (GWR) Standard 60 0.83 7 6 6.0 1212.6 1204.9 Analysis
21 JNW Club - Helpmekaar Kollege Open 2019 (C) 2019/07/06 2019/07/06 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1212.0 1202.7 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 6 1 2 3 2.0 33.3 -141.7 1435.3 1293.6
White 3 0 1 2 0.5 16.7 -283.3 1452.7 1169.3
Black 3 1 1 1 1.5 50.0 0.0 1417.9 1417.9
Standard All 6 1 2 3 2.0 33.3 -141.7 1435.3 1293.6
White 3 0 1 2 0.5 16.7 -283.3 1452.7 1169.3
Black 3 1 1 1 1.5 50.0 0.0 1417.9 1417.9
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 211 100 45 66 122.5 58.1 68.5 1172.9 1241.3
White 103 57 22 24 68.0 66.0 136.2 1177.7 1313.9
Black 108 43 23 42 54.5 50.5 3.9 1168.2 1172.2
Standard All 206 98 45 63 120.5 58.5 72.2 1168.9 1241.1
White 100 55 22 23 66.0 66.0 136.0 1174.0 1310.0
Black 106 43 23 40 54.5 51.4 12.0 1164.1 1176.1
Rapid All 5 2 0 3 2.0 40.0 -85.0 1335.5 1250.5
White 3 2 0 1 2.0 66.7 141.7 1301.2 1442.8
Black 2 0 0 2 0.0 0.0 -425.0 1386.9 961.9
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 106060686 Greef, J (Janus) 4 1.5 0 3 1 37.5 1193.2 -106.3 1086.9 View list
2 109086017 Roetz, K (Kyle) 3 2.5 2 1 0 83.3 1245.0 283.3 1528.3 View list
3 205048914 Shaw, A (Amy) 3 1.5 1 1 1 50.0 1176.6 0.0 1176.6 View list
4 111092701 Deysel, K (Kaleb) 3 1.0 1 0 2 33.3 1429.2 -141.7 1287.5 View list
5 107078828 Johnson, C (Caleb) 3 1.0 1 0 2 33.3 1288.1 -141.7 1146.4 View list
6 106003263 Bouwer, ER (Evan) 2 2.0 2 0 0 100.0 936.8 425.0 1361.8 View list
7 106071110 Jonker, P (Philip) 2 2.0 2 0 0 100.0 929.0 425.0 1354.0 View list
8 106064846 Nieuwoudt, R (Regardt) 2 2.0 2 0 0 100.0 943.9 425.0 1368.8 View list
9 109076140 Jones, E (Edward) 2 1.5 1 1 0 75.0 1432.6 212.5 1645.1 View list
10 1080099597 Rossouw, W (Wessel Johannes) 2 1.5 1 1 0 75.0 1303.4 212.5 1515.9 View list
11 106050282 Voigt, H (Heinrich) 2 1.5 1 1 0 75.0 1372.4 212.5 1584.9 View list
12 201081372 Guliwe, L (Lwandile) 2 1.0 1 0 1 50.0 1311.9 0.0 1311.9 View list
13 106092692 Hausberger, J (Justin) 2 1.0 1 0 1 50.0 1336.3 0.0 1336.3 View list
14 103064968 Steyn, C (Corne) 2 1.0 1 0 1 50.0 906.5 0.0 906.5 View list
15 106064421 Brandt, DW (Declan William) 2 0.5 0 1 1 25.0 1184.1 -212.5 971.6 View list
16 105056908 Mahajan, S (Shaunak) 2 0.5 0 1 1 25.0 855.8 -212.5 643.3 View list
17 1060103469 Naidoo, T (Tyrelle) 2 0.5 0 1 1 25.0 1214.1 -212.5 1001.6 View list
18 107090302 Setshedi, N (Neo) 2 0.5 0 1 1 25.0 1411.7 -212.5 1199.2 View list
19 106084365 Singh, N (Nimai) 2 0.0 0 0 2 0.0 1034.8 -425.0 609.8 View list
20 1060096732 Van Tonder, W (Wium) 2 0.0 0 0 2 0.0 1329.2 -425.0 904.2 View list