Player Page

Siebritz, Y (Yul)
Dob: 2011/01/09 (U14)
Gender: Male
Chess SA id: 1110139048
FIDE id:
Region: West Coast (WCU)
Citizen: RSA
Title(s):
Last active: 2024/05/11 (7 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 rating1384.2
Curent Weighted rating1329.4
Curent Weighted performance1306.7
Current official/published rating (highest between Raw, WR and WP)1384.2
Current floor (min rating allowed)907.7
Current highest rating achieved1407.7
Current K-factor32
Games played this month15
Score (S)12.0
Expected score (We)8.05
Difference (S-We)3.95
Current Raw change (no limits, including tournament time weight)89.5
Current min/max change allowed (with limits)±127.5
Current Raw change used (final)89.5
Projected new Raw rating1473.7
Projected new Weighed rating1343.3
Projected new Weighted performance1306.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1473.7
Projected effective change (new Official - current Official)+89.5
Projected new highest rating1473.7
Projected new floor973.7
Projected new K-facor32
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 rating1292.3
Curent Weighted rating1275.2
Curent Weighted performance1209.3
Current official/published rating (highest between Raw, WR and WP)1292.3
Current floor (min rating allowed)800.6
Current highest rating achieved1300.6
Current K-factor36
Games played this month6
Score (S)3.5
Expected score (We)1.26
Difference (S-We)2.24
Current Raw change (no limits, including tournament time weight)80.6
Current min/max change allowed (with limits)±145.4
Current Raw change used (final)80.6
Projected new Raw rating1372.9
Projected new Weighed rating1284.4
Projected new Weighted performance1209.3
Projected new official/published rating (highest between new Raw, new WR and new WP)1372.9
Projected effective change (new Official - current Official)+80.6
Projected new highest rating1372.9
Projected new floor872.9
Projected new K-facor36
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 rating1454.4
Curent Weighted rating1353.2
Curent Weighted performance1389.1
Current official/published rating (highest between Raw, WR and WP)1454.4
Current floor (min rating allowed)1017.4
Current highest rating achieved1517.4
Current K-factor32
Games played this month9
Score (S)8.5
Expected score (We)7.23
Difference (S-We)1.27
Current Raw change (no limits, including tournament time weight)40.6
Current min/max change allowed (with limits)±115.4
Current Raw change used (final)40.6
Projected new Raw rating1495.0
Projected new Weighed rating1368.4
Projected new Weighted performance1389.1
Projected new official/published rating (highest between new Raw, new WR and new WP)1495.0
Projected effective change (new Official - current Official)+40.6
Projected new highest rating1517.4
Projected new floor1017.4
Projected new K-facor32
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 rating1403.4
Curent Weighted rating1195.4
Curent Weighted performance1395.1
Current official/published rating (highest between Raw, WR and WP)1403.4
Current floor (min rating allowed)1017.4
Current highest rating achieved1403.4
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)±124.1
Current Raw change used (final)0.0
Projected new Raw rating1403.4
Projected new Weighed rating1212.8
Projected new Weighted performance1395.1
Projected new official/published rating (highest between new Raw, new WR and new WP)1403.4
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1403.4
Projected new floor1017.4
Projected new K-facor32
Tournaments
Tournament: Lower West Top Schools 2024 (U18)
Start: 2024/05/11  End: 2024/05/11  Host: WCU  Type: Rapid   Time: 30  Time weight: 0.60  Rounds: 4
Games: 4  Score: 3.5
Main rating: 1384.2  Rating gain/loss: 17.3
Type rating: 1454.4  Rating gain/loss: 12.5
Analysis
Tournament: Western Cape PS Individuals Championship 2024 (U13 Boys)
Start: 2024/05/04  End: 2024/05/05  Host: WCU  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 6
Games: 6  Score: 3.5
Main rating: 1384.2  Rating gain/loss: 44.4
Type rating: 1292.3  Rating gain/loss: 80.6
Analysis
Tournament: Lambersbaai Open 2024 (A)
Start: 2024/05/01  End: 2024/05/01  Host: WCU  Type: Rapid   Time: 32  Time weight: 0.63  Rounds: 5
Games: 5  Score: 5.0
Main rating: 1384.2  Rating gain/loss: 27.8
Type rating: 1454.4  Rating gain/loss: 28.2
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
13 Lower West Top Schools 2024 (U18) 2024/05/11 2024/05/11 West Coast (WCU) Rapid 30 0.60 5 4 3.5 1384.2 1454.4 Analysis
12 Western Cape PS Individuals Championship 2024 (U13 Boys) 2024/05/04 2024/05/05 West Coast (WCU) Standard 60 0.83 6 6 3.5 1384.2 1292.3 Analysis
11 Lambersbaai Open 2024 (A) 2024/05/01 2024/05/01 West Coast (WCU) Rapid 32 0.63 5 5 5.0 1384.2 1454.4 Analysis
10 Deep Blue Chess Club April Blitz 2024 2024/04/24 2024/04/24 West Coast (WCU) Blitz 5 0.18 7 5 4.0 1392.0 1249.4 Analysis
9 Deep Blue Open 2024 (Elite) 2024/04/13 2024/04/13 West Coast (WCU) Rapid 35 0.66 5 5 1.5 1392.0 1517.4 Analysis
8 Deep Blue March Blitz 2024 2024/03/27 2024/03/27 West Coast (WCU) Blitz 5 0.18 5 5 5.0 1392.0 1249.4 Analysis
7 Western Cape Inter Region Cup 2024 (U14 Boys) 2024/03/23 2024/03/24 Overberg (WOS) Standard 90 0.94 5 4 1.0 1407.7 1291.6 Analysis
6 Western Cape Inter Region Cup 2024 (Blitz) 2024/03/22 2024/03/22 Overberg (WOS) Blitz 5 0.18 7 7 2.0 1407.7 1347.0 Analysis
5 West Coast Schools Chess Prestige Championships 2024 (U13 Boys) 2024/03/09 2024/03/09 West Coast (WCU) Rapid 30 0.60 5 5 3.5 1407.7 1507.9 Analysis
4 Deep Blue February Blitz Juniors 2024 2024/02/28 2024/02/28 West Coast (WCU) Blitz 5 0.18 7 7 6.5 1367.6 1277.2 Analysis
3 Lower West Coast Schools Chess Prestige 2024 (U13 Boys) 2024/02/17 2024/02/17 West Coast (WCU) Rapid 30 0.60 5 4 4.0 1367.6 1380.2 Analysis
2 Longacres Top 10 Battle January 2024 2024/01/27 2024/01/27 West Coast (WCU) Rapid 12 0.33 5 5 4.0 1345.1 1364.5 Analysis
1 Deep Blue CC Blitz 2024 (Juniors) 2024/01/27 2024/01/27 West Coast (WCU) Blitz 5 0.18 7 7 7.0 1345.1 1124.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
44 Lower West Top Schools 2024 (U18) 2024/05/11 2024/05/11 West Coast (WCU) Rapid 30 0.60 5 4 3.5 1384.2 1454.4 Analysis
43 Western Cape PS Individuals Championship 2024 (U13 Boys) 2024/05/04 2024/05/05 West Coast (WCU) Standard 60 0.83 6 6 3.5 1384.2 1292.3 Analysis
42 Lambersbaai Open 2024 (A) 2024/05/01 2024/05/01 West Coast (WCU) Rapid 32 0.63 5 5 5.0 1384.2 1454.4 Analysis
41 Deep Blue Chess Club April Blitz 2024 2024/04/24 2024/04/24 West Coast (WCU) Blitz 5 0.18 7 5 4.0 1392.0 1249.4 Analysis
40 Deep Blue Open 2024 (Elite) 2024/04/13 2024/04/13 West Coast (WCU) Rapid 35 0.66 5 5 1.5 1392.0 1517.4 Analysis
39 Deep Blue March Blitz 2024 2024/03/27 2024/03/27 West Coast (WCU) Blitz 5 0.18 5 5 5.0 1392.0 1249.4 Analysis
38 Western Cape Inter Region Cup 2024 (U14 Boys) 2024/03/23 2024/03/24 Overberg (WOS) Standard 90 0.94 5 4 1.0 1407.7 1291.6 Analysis
37 Western Cape Inter Region Cup 2024 (Blitz) 2024/03/22 2024/03/22 Overberg (WOS) Blitz 5 0.18 7 7 2.0 1407.7 1347.0 Analysis
36 West Coast Schools Chess Prestige Championships 2024 (U13 Boys) 2024/03/09 2024/03/09 West Coast (WCU) Rapid 30 0.60 5 5 3.5 1407.7 1507.9 Analysis
35 Deep Blue February Blitz Juniors 2024 2024/02/28 2024/02/28 West Coast (WCU) Blitz 5 0.18 7 7 6.5 1367.6 1277.2 Analysis
34 Lower West Coast Schools Chess Prestige 2024 (U13 Boys) 2024/02/17 2024/02/17 West Coast (WCU) Rapid 30 0.60 5 4 4.0 1367.6 1380.2 Analysis
33 Longacres Top 10 Battle January 2024 2024/01/27 2024/01/27 West Coast (WCU) Rapid 12 0.33 5 5 4.0 1345.1 1364.5 Analysis
32 Deep Blue CC Blitz 2024 (Juniors) 2024/01/27 2024/01/27 West Coast (WCU) Blitz 5 0.18 7 7 7.0 1345.1 1124.4 Analysis
31 Clanwilliam Chess Club Open 2023 (B) 2023/12/02 2023/12/02 West Coast (WCU) Rapid 35 0.66 5 5 4.0 1315.4 1332.2 Analysis
30 Deep Blue Open Team 2023 2023/11/04 2023/11/04 West Coast (WCU) Rapid 30 0.60 5 5 4.0 1280.6 1268.8 Analysis
29 West Coast Primary Schools Grand Challenge League 2023 (Primary School) 2023/10/21 2023/10/21 West Coast (WCU) Rapid 15 0.39 5 5 3.5 1265.2 1223.7 Analysis
28 Basil Ellman Rapid 2023 (C) 2023/09/30 2023/09/30 West Coast (WCU) Rapid 30 0.60 5 5 1.0 1322.3 1349.8 Analysis
27 Western Cape Closed Championship 2023 (D) 2023/09/24 2023/09/25 Cape Town (WCT) Standard 90 0.94 6 6 3.0 1322.3 1280.1 Analysis
26 Deep Blue Open 2023 (Elite) 2023/09/16 2023/09/16 West Coast (WCU) Rapid 28 0.58 5 5 1.0 1322.3 1349.8 Analysis
25 CW Top Schools 2023 (Advanced) 2023/08/11 2023/08/13 West Coast (WCU) Standard 90 0.94 6 6 2.0 1350.4 1300.6 Analysis
123
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 69 48 5 16 50.5 73.2 197.1 1312.1 1509.2
White 37 27 5 5 29.5 79.7 252.7 1295.0 1547.7
Black 32 21 0 11 21.0 65.6 132.8 1331.8 1464.6
Standard All 10 4 1 5 4.5 45.0 -42.5 1538.5 1496.0
White 5 2 1 2 2.5 50.0 0.0 1518.1 1518.1
Black 5 2 0 3 2.0 40.0 -85.0 1558.9 1473.9
Rapid All 28 20 3 5 21.5 76.8 227.7 1261.6 1489.3
White 17 12 3 2 13.5 79.4 250.0 1278.5 1528.5
Black 11 8 0 3 8.0 72.7 193.2 1235.5 1428.7
Blitz All 31 24 1 6 24.5 79.0 246.8 1284.6 1531.4
White 15 13 1 1 13.5 90.0 340.0 1239.3 1579.3
Black 16 11 0 5 11.0 68.8 159.4 1327.1 1486.4
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 225 122 12 91 128.0 56.9 58.6 1310.0 1368.6
White 114 65 8 41 69.0 60.5 89.5 1296.0 1385.5
Black 111 57 4 50 59.0 53.2 26.8 1324.5 1351.3
Standard All 62 27 3 32 28.5 46.0 -34.3 1375.1 1340.8
White 32 14 2 16 15.0 46.9 -26.6 1389.0 1362.5
Black 30 13 1 16 13.5 45.0 -42.5 1360.2 1317.7
Rapid All 122 68 8 46 72.0 59.0 76.6 1276.4 1353.0
White 62 36 5 21 38.5 62.1 102.8 1260.8 1363.6
Black 60 32 3 25 33.5 55.8 49.6 1292.5 1342.0
Blitz All 41 27 1 13 27.5 67.1 145.1 1312.0 1457.1
White 20 15 1 4 15.5 77.5 233.8 1256.3 1490.1
Black 21 12 0 9 12.0 57.1 60.7 1364.9 1425.7
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 206055118 Ellman, A (Anne-Belle) 7 6.5 6 1 0 92.9 1368.8 364.3 1733.1 View list
2 2110159903 Siebritz, N (Noelle) 4 4.0 4 0 0 100.0 1374.2 425.0 1799.2 View list
3 1120153777 Wehr, C (Corbin) 4 4.0 4 0 0 100.0 1346.3 425.0 1771.3 View list
4 206077294 Galant, R (Rozaan) 4 1.0 1 0 3 25.0 1317.0 -212.5 1104.5 View list
5 1090096311 Schroeder, L (Liam) 4 1.0 1 0 3 25.0 1282.0 -212.5 1069.5 View list
6 2100142543 Love, C (Celine) 4 0.5 0 1 3 12.5 1318.9 -318.8 1000.1 View list
7 1100138326 Koopman, T (Tyler) 4 0.0 0 0 4 0.0 1304.7 -425.0 879.7 View list
8 1060099677 Njokweni, L (Llyabona) 4 0.0 0 0 4 0.0 1337.7 -425.0 912.7 View list
9 1120100598 Ellman, A (Andries) 3 3.0 3 0 0 100.0 1368.2 425.0 1793.2 View list
10 1090105088 Williams, C (Clarance-John) 3 2.0 2 0 1 66.7 1274.8 141.7 1416.4 View list
11 109093484 Duiker, P (Phillip) 3 1.5 1 1 1 50.0 1285.1 0.0 1285.1 View list
12 1100103503 Arendse, Q (Qnwinne) 3 1.0 1 0 3 33.3 1296.9 -141.7 1155.2 View list
13 1120139043 Klaasens, J (Jermaine) 3 0.5 0 1 2 16.7 1225.3 -283.3 941.9 View list
14 1120113687 Prinsloo, L (Lyle) 3 0.5 0 1 2 16.7 1328.2 -283.3 1044.9 View list
15 1060096290 Kariem, S (Shakir) 3 0.0 0 0 3 0.0 1315.6 -425.0 890.6 View list
16 109090543 Visagie, C (Christopher) 3 0.0 0 0 3 0.0 1287.9 -425.0 862.9 View list
17 1110157832 Adams, T (Tyler) 2 2.0 2 0 0 100.0 1393.0 425.0 1818.0 View list
18 1100142259 Adams, J (Jenito) 2 2.0 2 0 0 100.0 1318.2 425.0 1743.2 View list
19 1060130313 Davids, C (Cleverton) 2 2.0 2 0 0 100.0 1246.5 425.0 1671.5 View list
20 1110139098 Diergaardt, M (Maczayn) 2 2.0 2 0 0 100.0 1210.6 425.0 1635.6 View list