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: 2024/07/07 (20 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 rating1463.4
Current Weighted rating1354.1
Current Weighted performance1354.6
Current official/published rating (highest between Raw, WR and WP)1463.4
Current highest rating achieved1463.4
Current floor (min rating allowed)963.4
Current K-factor32
Games played this month7
Score (S)4.0
Expected score (We)5.04
Difference (S-We)-0.98
Current Raw change (no limits, including tournament time weight)-31.3
Current min/max change allowed (with limits)±113.9
Current Raw change used (final)-31.3
Projected new Raw rating1432.1
Projected new Weighed rating1248.5
Projected new Weighted performance1347.7
Projected new final Raw rating (if new WP > new Raw)1432.1
Projected new highest rating1463.4
Projected new floor963.4
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1432.1
Projected effective change (new Official - current Official)-31.3
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 rating1370.8
Current Weighted rating1292.7
Current Weighted performance1323.3
Current official/published rating (highest between Raw, WR and WP)1370.8
Current highest rating achieved1370.8
Current floor (min rating allowed)870.8
Current K-factor36
Games played this month7
Score (S)4.0
Expected score (We)4.47
Difference (S-We)-0.47
Current Raw change (no limits, including tournament time weight)-16.9
Current min/max change allowed (with limits)±130.0
Current Raw change used (final)-16.9
Projected new Raw rating1353.9
Projected new Weighed rating1191.0
Projected new Weighted performance1341.6
Projected new final Raw rating (if new WP > new Raw)1353.9
Projected new highest rating1370.8
Projected new floor870.8
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1353.9
Projected effective change (new Official - current Official)-16.9
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 rating1490.5
Current Weighted rating1382.2
Current Weighted performance1486.3
Current official/published rating (highest between Raw, WR and WP)1490.5
Current highest rating achieved1517.4
Current floor (min rating allowed)1017.4
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)±109.6
Current Raw change used (final)0.0
Projected new Raw rating1490.5
Projected new Weighed rating1275.9
Projected new Weighted performance1486.3
Projected new final Raw rating (if new WP > new Raw)1490.5
Projected new highest rating1517.4
Projected new floor1017.4
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1490.5
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 rating1375.9
Current Weighted rating1225.2
Current Weighted performance1436.0
Current official/published rating (highest between Raw, WR and WP)1436.0
Current highest rating achieved1403.4
Current floor (min rating allowed)903.4
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)±129.1
Current Raw change used (final)0.0
Projected new Raw rating1375.9
Projected new Weighed rating1129.1
Projected new Weighted performance1436.0
Projected new final Raw rating (if new WP > new Raw)1436.0
Projected new highest rating1436.0
Projected new floor936.0
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1436.0
Projected effective change (new Official - current Official)=0.0
Tournaments
Tournament: South African Open Chess Championship 2024 (C)
Start: 2024/07/04  End: 2024/07/07  Host: KED  Type: Standard   Time: 90  Time weight: 0.94  Rounds: 7
Games: 7  Score: 4.0
Main rating: 1463.4  Rating gain/loss: -31.3
Type rating: 1370.8  Rating gain/loss: -16.9
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
18 South African Open Chess Championship 2024 (C) 2024/07/04 2024/07/07 Ethekwini (KED) Standard 90 0.94 7 7 4.0 1463.4 1370.8 Analysis
17 Lambertsbay Youth Open 2024 (Elite) 2024/06/17 2024/06/17 West Coast (WCU) Rapid 33 0.64 5 5 4.0 1454.0 1495.0 Analysis
16 Basil Ellman Annual Rapid 2024 (Elite) 2024/06/08 2024/06/08 West Coast (WCU) Rapid 28 0.58 5 5 2.5 1454.0 1495.0 Analysis
15 Deep Blue CC May Blitz 2024 2024/05/22 2024/05/22 West Coast (WCU) Blitz 5 0.18 7 7 4.0 1384.2 1403.4 Analysis
14 West Coast & Mykonos Open 2024 (Open) 2024/05/17 2024/05/19 West Coast (WCU) Standard 90 0.94 6 6 3.0 1384.2 1292.3 Analysis
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
49 South African Open Chess Championship 2024 (C) 2024/07/04 2024/07/07 Ethekwini (KED) Standard 90 0.94 7 7 4.0 1463.4 1370.8 Analysis
48 Lambertsbay Youth Open 2024 (Elite) 2024/06/17 2024/06/17 West Coast (WCU) Rapid 33 0.64 5 5 4.0 1454.0 1495.0 Analysis
47 Basil Ellman Annual Rapid 2024 (Elite) 2024/06/08 2024/06/08 West Coast (WCU) Rapid 28 0.58 5 5 2.5 1454.0 1495.0 Analysis
46 Deep Blue CC May Blitz 2024 2024/05/22 2024/05/22 West Coast (WCU) Blitz 5 0.18 7 7 4.0 1384.2 1403.4 Analysis
45 West Coast & Mykonos Open 2024 (Open) 2024/05/17 2024/05/19 West Coast (WCU) Standard 90 0.94 6 6 3.0 1384.2 1292.3 Analysis
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
123
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 99 65 6 28 68.0 68.7 158.8 1315.3 1474.2
White 54 38 6 10 41.0 75.9 220.4 1299.6 1520.0
Black 45 27 0 18 27.0 60.0 85.0 1334.2 1419.2
Standard All 23 11 1 11 11.5 50.0 0.0 1394.6 1394.6
White 12 7 1 4 7.5 62.5 106.3 1369.0 1475.3
Black 11 4 0 7 4.0 36.4 -115.9 1422.5 1306.6
Rapid All 38 26 4 8 28.0 73.7 201.3 1290.2 1491.5
White 23 15 4 4 17.0 73.9 203.3 1304.4 1507.7
Black 15 11 0 4 11.0 73.3 198.3 1268.3 1466.6
Blitz All 38 28 1 9 28.5 75.0 212.5 1292.5 1505.0
White 19 16 1 2 16.5 86.8 313.2 1249.9 1563.0
Black 19 12 0 7 12.0 63.2 111.8 1335.2 1447.1
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 255 139 13 103 145.5 57.1 60.0 1311.6 1371.6
White 131 76 9 46 80.5 61.5 97.3 1297.8 1395.1
Black 124 63 4 57 65.0 52.4 20.6 1326.1 1346.7
Standard All 75 34 3 38 35.5 47.3 -22.7 1359.3 1336.6
White 39 19 2 18 20.0 51.3 10.9 1366.3 1377.2
Black 36 15 1 20 15.5 43.1 -59.0 1351.6 1292.6
Rapid All 132 74 9 49 78.5 59.5 80.5 1283.5 1364.0
White 68 39 6 23 42.0 61.8 100.0 1271.1 1371.1
Black 64 35 3 26 36.5 57.0 59.8 1296.6 1356.3
Blitz All 48 31 1 16 31.5 65.6 132.8 1314.2 1447.1
White 24 18 1 5 18.5 77.1 230.2 1261.8 1492.0
Black 24 13 0 11 13.0 54.2 35.4 1366.7 1402.1
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 206055118 Ellman, A (Anne-Belle) 9 7.5 7 1 1 83.3 1380.0 283.3 1663.3 View list
2 1120100598 Ellman, A (Andries) 5 5.0 5 0 0 100.0 1388.6 425.0 1813.6 View list
3 2110159903 Siebritz, N (Noelle) 5 5.0 5 0 0 100.0 1392.0 425.0 1817.0 View list
4 1120153777 Wehr, C (Corbin) 5 5.0 5 0 0 100.0 1353.9 425.0 1778.9 View list
5 1100192698 Sedeman, A (Aiden) 4 3.0 3 0 1 75.0 1405.5 212.5 1618.0 View list
6 206077294 Galant, R (Rozaan) 4 1.0 1 0 3 25.0 1317.0 -212.5 1104.5 View list
7 1090096311 Schroeder, L (Liam) 4 1.0 1 0 3 25.0 1282.0 -212.5 1069.5 View list
8 2100142543 Love, C (Celine) 4 0.5 0 1 3 12.5 1318.9 -318.8 1000.1 View list
9 1100138326 Koopman, T (Tyler) 4 0.0 0 0 4 0.0 1304.7 -425.0 879.7 View list
10 1060099677 Njokweni, L (Llyabona) 4 0.0 0 0 4 0.0 1337.7 -425.0 912.7 View list
11 209077302 Ellman, E (Elle-Marie) 3 3.0 3 0 0 100.0 1365.6 425.0 1790.6 View list
12 1110117560 Stoffberg, M (Mikaeel) 3 2.0 2 0 1 66.7 1381.3 141.7 1522.9 View list
13 1090105088 Williams, C (Clarance-John) 3 2.0 2 0 1 66.7 1274.8 141.7 1416.4 View list
14 109093484 Duiker, P (Phillip) 3 1.5 1 1 1 50.0 1285.1 0.0 1285.1 View list
15 1100103503 Arendse, Q (Qnwinne) 3 1.0 1 0 3 33.3 1296.9 -141.7 1155.2 View list
16 1120139043 Klaasens, J (Jermaine) 3 0.5 0 1 2 16.7 1225.3 -283.3 941.9 View list
17 1120113687 Prinsloo, L (Lyle) 3 0.5 0 1 2 16.7 1328.2 -283.3 1044.9 View list
18 1060096290 Kariem, S (Shakir) 3 0.0 0 0 3 0.0 1315.6 -425.0 890.6 View list
19 109090543 Visagie, C (Christopher) 3 0.0 0 0 3 0.0 1287.9 -425.0 862.9 View list
20 1110157832 Adams, T (Tyler) 2 2.0 2 0 0 100.0 1393.0 425.0 1818.0 View list