Player Page

Weng, Y (Yu Bo (David))
Dob: 2010/01/05 (U16)
Gender: Male
Chess SA id: 1100117290
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/04/06 (34 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 rating1698.1
Curent Weighted rating1624.6
Curent Weighted performance1666.7
Current official/published rating (highest between Raw, WR and WP)1698.1
Current floor (min rating allowed)1198.1
Current highest rating achieved1698.1
Current K-factor28
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)±81.6
Current Raw change used (final)0.0
Projected new Raw rating1698.1
Projected new Weighed rating1634.8
Projected new Weighted performance1666.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1698.1
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1698.1
Projected new floor1198.1
Projected new K-facor28
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 rating1704.8
Curent Weighted rating1622.6
Curent Weighted performance1661.4
Current official/published rating (highest between Raw, WR and WP)1704.8
Current floor (min rating allowed)1204.8
Current highest rating achieved1704.8
Current K-factor28
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)±80.8
Current Raw change used (final)0.0
Projected new Raw rating1704.8
Projected new Weighed rating1634.1
Projected new Weighted performance1661.4
Projected new official/published rating (highest between new Raw, new WR and new WP)1704.8
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1704.8
Projected new floor1204.8
Projected new K-facor28
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 rating1290.4
Curent Weighted rating1289.5
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1290.4
Current floor (min rating allowed)790.4
Current highest rating achieved1290.4
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)±145.8
Current Raw change used (final)0.0
Projected new Raw rating1290.4
Projected new Weighed rating1289.9
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1290.4
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1290.4
Projected new floor790.4
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 rating1289.6
Curent Weighted rating1267.4
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1289.6
Current floor (min rating allowed)790.4
Current highest rating achieved1289.6
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)±145.9
Current Raw change used (final)0.0
Projected new Raw rating1289.6
Projected new Weighed rating1270.8
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1289.6
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1289.6
Projected new floor790.4
Projected new K-facor36
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
2 2024 KSNG CHess Academy Open Tournament (A) 2024/04/06 2024/04/06 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1689.0 1695.6 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U14A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 5.0 1652.2 1658.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
26 2024 KSNG CHess Academy Open Tournament (A) 2024/04/06 2024/04/06 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1689.0 1695.6 Analysis
25 2024 Gauteng Inter-Region Chess Championship (U14A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 5.0 1652.2 1658.4 Analysis
24 Africawide Chess Championship 2023 (Open) 2023/11/03 2023/11/05 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.0 1655.1 1666.0 Analysis
23 Chess Power House 2023 (B) 2023/08/19 2023/08/19 Johannesburg Metro (GJM) Standard 90 0.94 5 4 3.0 1608.0 1603.6 Analysis
22 JMC Closed Aug 2023 (U14) 2023/08/04 2023/08/06 Johannesburg Metro (GJM) Standard 90 0.94 6 6 6.0 1608.0 1603.6 Analysis
21 JMC - The Higher Ground Restaurant 2nd Blitz Event 2023 2023/07/30 2023/07/30 Johannesburg Metro (GJM) Blitz 8 0.25 7 7 5.0 1550.0 1221.2 Analysis
20 3rd Knight Riders Junior Open 2023 (U14+U16) 2023/07/29 2023/07/29 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.5 1550.0 1532.6 Analysis
19 2023 Menlo Open Tournament (B) 2023/07/22 2023/07/22 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1550.0 1532.6 Analysis
18 2023 South African Junior Closed Chess Championships (U14 Open) 2023/03/31 2023/04/04 Chess South Africa (CSA) Standard 120 1.00 9 9 5.0 1543.9 1521.1 Analysis
17 JMC 1 St Peters 2023 (B) 2023/03/18 2023/03/18 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1559.8 1537.1 Analysis
16 2022 South African Junior Wild Card Chess Championships (U14 Open) 2022/12/09 2022/12/12 4 Knights (4K) Standard 120 1.00 7 7 5.5 1449.1 1417.1 Analysis
15 2022 South Africa Junior Blitz Chess Championships (U14) 2022/12/05 2022/12/05 4 Knights (4K) Blitz 5 0.18 7 7 4.0 1449.1 1200.0 Analysis
14 2022 South African Junior Team Chess Championships (U14 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 6.0 1449.1 1417.1 Analysis
13 FNB Chessheroes Anity Bullying 2022 (U14) 2022/11/05 2022/11/05 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1461.3 1430.5 Analysis
12 Chess Molecules Championship 2022 (U13) 2022/09/17 2022/09/17 Johannesburg Metro (GJM) Rapid 30 0.60 5 5 4.5 1464.7 1243.2 Analysis
11 JMC 3rd Trials 2022 (B) 2022/09/11 2022/09/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1464.7 1459.3 Analysis
10 Mzansi Spring Open 2022 (Advanced) 2022/09/03 2022/09/03 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1464.7 1459.3 Analysis
9 JMC 2nd Trials 2022 (B) 2022/08/27 2022/08/27 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1403.9 1354.9 Analysis
8 UJ Fundraising Tournament 2022 (C) 2022/08/13 2022/08/13 Johannesburg Metro (GJM) Standard 62 0.84 5 5 3.0 1403.9 1354.9 Analysis
7 JMC Womens Day 2022 (C) 2022/08/06 2022/08/07 Johannesburg Metro (GJM) Standard 90 0.94 6 6 6.0 1403.9 1354.9 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 10 7 2 1 8.0 80.0 255.0 1558.3 1813.3
White 4 3 0 1 3.0 75.0 212.5 1601.2 1813.7
Black 6 4 2 0 5.0 83.3 283.3 1529.7 1813.0
Standard All 10 7 2 1 8.0 80.0 255.0 1558.3 1813.3
White 4 3 0 1 3.0 75.0 212.5 1601.2 1813.7
Black 6 4 2 0 5.0 83.3 283.3 1529.7 1813.0
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 144 99 11 34 104.5 72.6 191.8 1366.0 1557.8
White 70 48 4 18 50.0 71.4 182.1 1370.2 1552.4
Black 74 51 7 16 54.5 73.6 201.0 1362.0 1563.0
Standard All 120 82 10 28 87.0 72.5 191.2 1362.6 1553.8
White 59 40 4 15 42.0 71.2 180.1 1371.8 1551.9
Black 61 42 6 13 45.0 73.8 202.0 1353.7 1555.7
Rapid All 10 8 1 1 8.5 85.0 297.5 1269.9 1567.4
White 4 3 0 1 3.0 75.0 212.5 1311.1 1523.6
Black 6 5 1 0 5.5 91.7 354.2 1242.4 1596.5
Blitz All 14 9 0 5 9.0 64.3 121.4 1463.8 1585.2
White 7 5 0 2 5.0 71.4 182.1 1391.0 1573.2
Black 7 4 0 3 4.0 57.1 60.7 1536.6 1597.3
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1090099818 Li, Z (Zhengfei) 4 1.0 1 0 3 25.0 1536.7 -212.5 1324.2 View list
2 109086017 Roetz, K (Kyle) 3 3.0 3 0 0 100.0 1444.4 425.0 1869.4 View list
3 1090105698 Naicker, GC (Gabriel Christian) 3 1.5 1 1 1 50.0 1381.0 0.0 1381.0 View list
4 1090105696 Barradas, K (Keanu) 2 2.0 2 0 0 100.0 1377.3 425.0 1802.3 View list
5 1100144057 Dikane, O (Oageng) 2 2.0 2 0 0 100.0 1496.5 425.0 1921.5 View list
6 1140113413 Eapen, J (Johan) 2 2.0 2 0 0 100.0 1481.8 425.0 1906.8 View list
7 109078830 Johnson, A (Ashar) 2 2.0 2 0 0 100.0 1551.8 425.0 1976.8 View list
8 1110103928 Slabbert, ZN (Zander Nicolaas) 2 2.0 2 0 0 100.0 1601.1 425.0 2026.1 View list
9 108082684 De Vries, MA (Andrio) 2 1.5 1 1 0 75.0 1619.5 212.5 1832.0 View list
10 1090130895 Arokiam, E (Ethan) 2 1.0 1 0 1 50.0 1403.9 0.0 1403.9 View list
11 1100100199 Botha, T (Tyler) 2 1.0 1 0 1 50.0 1449.1 0.0 1449.1 View list
12 111092701 Deysel, K (Kaleb) 2 1.0 1 0 1 50.0 1506.0 0.0 1506.0 View list
13 1100141972 Mallach, M (Matthew) 2 1.0 1 0 1 50.0 1455.2 0.0 1455.2 View list
14 211085191 Naidoo, K (Kajol) 2 1.0 1 0 1 50.0 1534.7 0.0 1534.7 View list
15 1140135557 Thorulsley, K (Kairaav) 2 1.0 1 0 1 50.0 1464.7 0.0 1464.7 View list
16 109069454 Sathish, A (Abinavah) 2 0.0 0 0 2 0.0 1496.5 -425.0 1071.5 View list
17 2120108352 De Swardt, M (Mieke) 1 1.0 1 0 0 100.0 1163.5 425.0 1588.5 View list
18 1090144948 De Abreu, P (Pedro) 1 1.0 1 0 0 100.0 1403.9 425.0 1828.9 View list
19 111092267 D`Alton, E (Ezra) 1 1.0 1 0 0 100.0 1461.3 425.0 1886.3 View list
20 212091698 Chinoruma, K (Kupa) 1 1.0 1 0 0 100.0 1403.9 425.0 1828.9 View list