Player Page

Li, Z (Zhengfei)
Dob: 2009/11/01 (U16)
Gender: Male
Chess SA id: 1090099818
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/04/06 (22 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 rating1682.8
Curent Weighted rating1672.2
Curent Weighted performance1567.5
Current official/published rating (highest between Raw, WR and WP)1682.8
Current floor (min rating allowed)1219.9
Current highest rating achieved1719.9
Current K-factor28
Games played this month5
Score (S)3.0
Expected score (We)2.60
Difference (S-We)0.40
Current Raw change (no limits, including tournament time weight)9.3
Current min/max change allowed (with limits)±83.3
Current Raw change used (final)9.3
Projected new Raw rating1692.1
Projected new Weighed rating1677.3
Projected new Weighted performance1567.5
Projected new official/published rating (highest between new Raw, new WR and new WP)1692.1
Projected effective change (new Official - current Official)+9.3
Projected new highest rating1719.9
Projected new floor1219.9
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 rating1670.8
Curent Weighted rating1658.2
Curent Weighted performance1556.4
Current official/published rating (highest between Raw, WR and WP)1670.8
Current floor (min rating allowed)1192.7
Current highest rating achieved1692.7
Current K-factor28
Games played this month5
Score (S)3.0
Expected score (We)2.47
Difference (S-We)0.53
Current Raw change (no limits, including tournament time weight)14.8
Current min/max change allowed (with limits)±84.8
Current Raw change used (final)14.8
Projected new Raw rating1685.6
Projected new Weighed rating1663.8
Projected new Weighted performance1556.4
Projected new official/published rating (highest between new Raw, new WR and new WP)1685.6
Projected effective change (new Official - current Official)+14.8
Projected new highest rating1692.7
Projected new floor1192.7
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 rating1343.9
Curent Weighted rating1301.1
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1343.9
Current floor (min rating allowed)843.9
Current highest rating achieved1343.9
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)±135.1
Current Raw change used (final)0.0
Projected new Raw rating1343.9
Projected new Weighed rating1306.0
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1343.9
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1343.9
Projected new floor843.9
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 rating1371.8
Curent Weighted rating1303.7
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1371.8
Current floor (min rating allowed)843.9
Current highest rating achieved1371.8
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)±129.8
Current Raw change used (final)0.0
Projected new Raw rating1371.8
Projected new Weighed rating1311.1
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1371.8
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1371.8
Projected new floor843.9
Projected new K-facor36
Tournaments
Tournament: 2024 KSNG CHess Academy Open Tournament (A)
Start: 2024/04/06  End: 2024/04/06  Host: GTP  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 3.0
Main rating: 1682.8  Rating gain/loss: 9.3
Type rating: 1670.8  Rating gain/loss: 14.8
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
3 2024 KSNG CHess Academy Open Tournament (A) 2024/04/06 2024/04/06 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1682.8 1670.8 Analysis
2 Wanderers Blitz Tournament 2024 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Blitz 8 0.25 9 9 5.5 1683.9 1308.8 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U16A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 4.0 1672.3 1654.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
18 2024 KSNG CHess Academy Open Tournament (A) 2024/04/06 2024/04/06 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1682.8 1670.8 Analysis
17 Wanderers Blitz Tournament 2024 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Blitz 8 0.25 9 9 5.5 1683.9 1308.8 Analysis
16 2024 Gauteng Inter-Region Chess Championship (U16A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 4.0 1672.3 1654.6 Analysis
15 World Youth Chess Championship 2023 2023/11/13 2023/11/24 FIDE (FID) Standard 150 1.00 11 11 4.5 1719.9 1692.7 Analysis
14 Mzansi Bryanston Rapid 2023 (Advanced) 2023/10/07 2023/10/07 Johannesburg Metro (GJM) Rapid 25 0.54 5 5 4.0 1703.7 1260.4 Analysis
13 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 8.0 1641.3 1627.2 Analysis
12 2022 South Africa Junior Blitz Chess Championships (U14) 2022/12/05 2022/12/05 4 Knights (4K) Blitz 5 0.18 7 7 7.0 1615.8 1200.0 Analysis
11 2022 South African Junior Team Chess Championships (U14 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 5.0 1615.8 1610.4 Analysis
10 JMC 3rd Trials 2022 (B) 2022/09/11 2022/09/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 5.0 1507.3 1513.1 Analysis
9 Mzansi Spring Open 2022 (Advanced) 2022/09/03 2022/09/03 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1507.3 1513.1 Analysis
8 JMC 2nd Trials 2022 (B) 2022/08/27 2022/08/27 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1505.2 1450.0 Analysis
7 JMC Womens Day 2022 (FIDE Open) 2022/08/06 2022/08/09 Johannesburg Metro (GJM) Standard 120 1.00 6 6 2.0 1505.2 1450.0 Analysis
6 JMC Trials 1 - Laerskool Fontainebleau 2022 (U14) 2022/07/24 2022/07/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1333.2 1309.6 Analysis
5 JNW Helpmekaar 2022 (Rookies) 2022/07/09 2022/07/09 Johannesburg Metro (GJM) Standard 60 0.83 5 5 5.0 1333.2 1309.6 Analysis
4 Chess Power House Rapid 2022 (B) 2022/06/11 2022/06/11 Johannesburg Metro (GJM) Rapid 20 0.47 5 5 4.5 1303.8 1200.0 Analysis
3 Mzansi Open 2022 (Young Masters) 2022/04/30 2022/05/01 Johannesburg Metro (GJM) Standard 90 0.94 6 6 5.0 1219.9 1221.0 Analysis
2 2018 Capablanca Swiss (D) 2018/04/27 2018/04/27 Tshwane (GTP) Standard 90 0.94 5 5 4.0 1216.9 1219.6 Analysis
1 2018 Crawford Open (E) 2018/03/24 2018/03/24 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 19 11 3 5 12.5 65.8 134.2 1573.2 1707.4
White 8 7 0 1 7.0 87.5 318.8 1446.9 1765.6
Black 11 4 3 4 5.5 50.0 0.0 1665.0 1665.0
Standard All 10 6 2 2 7.0 70.0 170.0 1570.4 1740.4
White 4 3 0 1 3.0 75.0 212.5 1622.8 1835.3
Black 6 3 2 1 4.0 66.7 141.7 1535.5 1677.2
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 9 5 1 3 5.5 61.1 94.4 1576.2 1670.7
White 4 4 0 0 4.0 100.0 425.0 1270.9 1695.9
Black 5 1 1 3 1.5 30.0 -170.0 1820.5 1650.5
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 110 77 10 23 82.0 74.5 208.6 1424.3 1633.0
White 52 39 2 11 40.0 76.9 228.8 1428.1 1657.0
Black 58 38 8 12 42.0 72.4 190.5 1421.0 1611.5
Standard All 84 57 8 19 61.0 72.6 192.3 1401.4 1593.7
White 40 27 2 11 28.0 70.0 170.0 1453.0 1623.0
Black 44 30 6 8 33.0 75.0 212.5 1354.5 1567.0
Rapid All 10 8 1 1 8.5 85.0 297.5 1445.6 1743.1
White 5 5 0 0 5.0 100.0 425.0 1295.9 1720.9
Black 5 3 1 1 3.5 70.0 170.0 1595.3 1765.3
Blitz All 16 12 1 3 12.5 78.1 239.1 1531.5 1770.5
White 7 7 0 0 7.0 100.0 425.0 1380.3 1805.3
Black 9 5 1 3 5.5 61.1 94.4 1649.0 1743.5
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1100117290 Weng, Y (Yu Bo (David)) 4 3.0 3 0 1 75.0 1611.8 212.5 1824.3 View list
2 109069454 Sathish, A (Abinavah) 4 1.5 1 1 2 37.5 1594.5 -106.3 1488.3 View list
3 109083250 Byliefeldt, L (Leroux) 3 3.0 3 0 0 100.0 1624.3 425.0 2049.3 View list
4 1090105698 Naicker, GC (Gabriel Christian) 3 3.0 3 0 0 100.0 1449.3 425.0 1874.3 View list
5 109092824 Labuschagne, I (Ivan) 2 2.0 2 0 0 100.0 1644.0 425.0 2069.1 View list
6 211085191 Naidoo, K (Kajol) 2 2.0 2 0 0 100.0 1506.3 425.0 1931.3 View list
7 1140135557 Thorulsley, K (Kairaav) 2 2.0 2 0 0 100.0 1605.5 425.0 2030.5 View list
8 109086362 Yang, A (Alex) 2 2.0 2 0 0 100.0 1656.8 425.0 2081.8 View list
9 1970104047 Maponya, K (Khutso) 2 1.0 1 0 1 50.0 1595.6 0.0 1595.6 View list
10 109081098 Naidoo, K (Kirthan) 2 0.5 0 1 1 25.0 1318.5 -212.5 1106.0 View list
11 2040143685 Bloem, S (Savanna) 1 1.0 1 0 0 100.0 1333.2 425.0 1758.2 View list
12 1110097852 Bezuidenhout, D (Dawid) 1 1.0 1 0 0 100.0 1507.3 425.0 1932.3 View list
13 1080109892 Balassis, P (Petro) 1 1.0 1 0 0 100.0 1219.9 425.0 1644.9 View list
14 1130130727 Badenhorst, M (Matthew) 1 1.0 1 0 0 100.0 1219.9 425.0 1644.9 View list
15 1100133759 Brest, S (Saul) 1 1.0 1 0 0 100.0 1303.8 425.0 1728.8 View list
16 111092267 D`Alton, E (Ezra) 1 1.0 1 0 0 100.0 1333.2 425.0 1758.2 View list
17 1090106163 Cressey, RJ (Ryelee Jordan) 1 1.0 1 0 0 100.0 1641.3 425.0 2066.3 View list
18 110088674 Chang, S (Samuel) 1 1.0 1 0 0 100.0 1615.8 425.0 2040.8 View list
19 1930159004 Cawthorn, W (William) 1 1.0 1 0 0 100.0 1683.9 425.0 2108.9 View list
20 1100117908 Diale, A (Aobakwe) 1 1.0 1 0 0 100.0 1615.8 425.0 2040.8 View list