Player Page

Sebongwane, N (Nkosana)
Dob: 2006/03/14 (U20)
Gender: Male
Chess SA id: 1060191365
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/12/03 (18 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 rating1338.2
Current Weighted rating1263.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1338.2
Current highest rating achieved1338.2
Current floor (min rating allowed)838.2
Current K-factor36
Games played this month18
Score (S)7.5
Expected score (We)5.35
Difference (S-We)0.16
Current Raw change (no limits, including tournament time weight)5.7
Current min/max change allowed (with limits)±136.2
Current Raw change used (final)5.7
Projected new Raw rating1343.9
Projected new Weighed rating1164.2
Projected new Weighted performance1406.5
Projected new final Raw rating (if new WP > new Raw)1406.5
Projected new highest rating1406.5
Projected new floor906.5
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1406.5
Projected effective change (new Official - current Official)+68.3
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 rating1322.0
Current Weighted rating1238.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1322.0
Current highest rating achieved1322.0
Current floor (min rating allowed)822.0
Current K-factor36
Games played this month9
Score (S)3.5
Expected score (We)3.37
Difference (S-We)0.13
Current Raw change (no limits, including tournament time weight)4.7
Current min/max change allowed (with limits)±139.4
Current Raw change used (final)4.7
Projected new Raw rating1326.7
Projected new Weighed rating1140.7
Projected new Weighted performance1134.4
Projected new final Raw rating (if new WP > new Raw)1326.7
Projected new highest rating1326.7
Projected new floor826.7
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1326.7
Projected effective change (new Official - current Official)+4.7
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 rating1242.5
Current Weighted rating1230.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1242.5
Current highest rating achieved1242.5
Current floor (min rating allowed)742.5
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)±156.1
Current Raw change used (final)0.0
Projected new Raw rating1242.5
Projected new Weighed rating1132.6
Projected new Weighted performance785.7
Projected new final Raw rating (if new WP > new Raw)1242.5
Projected new highest rating1242.5
Projected new floor742.5
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1242.5
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
Current K-factor36
Games played this month9
Score (S)4.0
Expected score (We)3.00
Difference (S-We)1.00
Current Raw change (no limits, including tournament time weight)36.0
Current min/max change allowed (with limits)±165.8
Current Raw change used (final)36.0
Projected new Raw rating1236.0
Projected new Weighed rating1104.0
Projected new Weighted performance541.4
Projected new final Raw rating (if new WP > new Raw)1236.0
Projected new highest rating1236.0
Projected new floor736.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1236.0
Projected effective change (new Official - current Official)+36.0
Tournaments
Tournament: USSA Chess Championships 2024 (Blitz)
Start: 2024/12/01  End: 2024/12/01  Host: GTP  Type: Blitz   Time: 5  Time weight: 0.18  Rounds: 9
Games: 9  Score: 4.0
Main rating: 1338.2  Rating gain/loss: 15.7
Type rating: 1200.0  Rating gain/loss: 36.0
Analysis
Tournament: USSA Chess Championships 2024 (Open)
Start: 2024/11/29  End: 2024/12/03  Host: GTP  Type: Standard   Time: 120  Time weight: 1.00  Rounds: 9
Games: 9  Score: 3.5
Main rating: 1338.2  Rating gain/loss: -10.1
Type rating: 1322.0  Rating gain/loss: 4.7
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
6 USSA Chess Championships 2024 (Blitz) 2024/12/01 2024/12/01 Tshwane (GTP) Blitz 5 0.18 9 9 4.0 1338.2 1200.0 Analysis
5 USSA Chess Championships 2024 (Open) 2024/11/29 2024/12/03 Tshwane (GTP) Standard 120 1.00 9 9 3.5 1338.2 1322.0 Analysis
4 Guateng Universities Chess Championship 2024 2024/10/05 2024/10/05 Joe Gqabi (EJG) Standard 60 0.83 5 4 2.0 1314.9 1291.8 Analysis
3 Chess Power House July Open 2024 (B) 2024/07/20 2024/07/20 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1246.8 1200.0 Analysis
2 Gauteng Cup 2nd Edition 2024 2024/05/18 2024/05/18 Johannesburg Metro (GJM) Standard 60 0.83 5 0 0.0 1246.8 1200.0 Analysis
1 University of the Witwatersrand vs University of Johannesburg 2024 2024/02/24 2024/02/24 Johannesburg Metro (GJM) Rapid 15 0.39 5 5 2.5 1233.3 1219.8 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
7 USSA Chess Championships 2024 (Blitz) 2024/12/01 2024/12/01 Tshwane (GTP) Blitz 5 0.18 9 9 4.0 1338.2 1200.0 Analysis
6 USSA Chess Championships 2024 (Open) 2024/11/29 2024/12/03 Tshwane (GTP) Standard 120 1.00 9 9 3.5 1338.2 1322.0 Analysis
5 Guateng Universities Chess Championship 2024 2024/10/05 2024/10/05 Joe Gqabi (EJG) Standard 60 0.83 5 4 2.0 1314.9 1291.8 Analysis
4 Chess Power House July Open 2024 (B) 2024/07/20 2024/07/20 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1246.8 1200.0 Analysis
3 Gauteng Cup 2nd Edition 2024 2024/05/18 2024/05/18 Johannesburg Metro (GJM) Standard 60 0.83 5 0 0.0 1246.8 1200.0 Analysis
2 University of the Witwatersrand vs University of Johannesburg 2024 2024/02/24 2024/02/24 Johannesburg Metro (GJM) Rapid 15 0.39 5 5 2.5 1233.3 1219.8 Analysis
1 Chess Power House Festive Rapid 2023 (B) 2023/12/15 2023/12/15 Johannesburg Metro (GJM) Rapid 20 0.47 6 6 3.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 32 14 4 14 16.0 50.0 0.0 1502.0 1502.0
White 15 8 2 5 9.0 60.0 85.0 1419.9 1504.9
Black 17 6 2 9 7.0 41.2 -75.0 1574.4 1499.4
Standard All 18 9 1 8 9.5 52.8 23.6 1420.4 1444.0
White 8 5 0 3 5.0 62.5 106.3 1322.4 1428.6
Black 10 4 1 5 4.5 45.0 -42.5 1498.8 1456.3
Rapid All 5 2 1 2 2.5 50.0 0.0 1470.5 1470.5
White 3 1 1 1 1.5 50.0 0.0 1465.5 1465.5
Black 2 1 0 1 1.0 50.0 0.0 1478.0 1478.0
Blitz All 9 3 2 4 4.0 44.4 -47.2 1682.7 1635.5
White 4 2 1 1 2.5 62.5 106.3 1580.9 1687.1
Black 5 1 1 3 1.5 30.0 -170.0 1764.1 1594.1
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 38 17 4 17 19.0 50.0 0.0 1499.7 1499.7
White 18 9 2 7 10.0 55.6 47.2 1450.4 1497.6
Black 20 8 2 10 9.0 45.0 -42.5 1544.0 1501.5
Standard All 18 9 1 8 9.5 52.8 23.6 1420.4 1444.0
White 8 5 0 3 5.0 62.5 106.3 1322.4 1428.6
Black 10 4 1 5 4.5 45.0 -42.5 1498.8 1456.3
Rapid All 11 5 1 5 5.5 50.0 0.0 1479.6 1479.6
White 6 2 1 3 2.5 41.7 -70.8 1534.0 1463.2
Black 5 3 0 2 3.0 60.0 85.0 1414.4 1499.4
Blitz All 9 3 2 4 4.0 44.4 -47.2 1682.7 1635.5
White 4 2 1 1 2.5 62.5 106.3 1580.9 1687.1
Black 5 1 1 3 1.5 30.0 -170.0 1764.1 1594.1
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1030140558 Khosa, A (Alex) 1 1.0 1 0 0 100.0 1338.2 425.0 1763.2 View list
2 1060099093 Madisha, K (Khotso Princie) 1 1.0 1 0 0 100.0 1314.9 425.0 1739.9 View list
3 1950147791 Chichava, B (Bongani) 1 1.0 1 0 0 100.0 1246.8 425.0 1671.8 View list
4 1990141277 Cele, S (Siyabonga) 1 1.0 1 0 0 100.0 1314.9 425.0 1739.9 View list
5 102067690 Carlinsky, R (Ruan) 1 1.0 1 0 0 100.0 1338.2 425.0 1763.2 View list
6 1090116569 Gemmell, Z (Zac) 1 1.0 1 0 0 100.0 1246.8 425.0 1671.8 View list
7 1110097686 Froom, G (Gabriel) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
8 1010192124 Mgomezulu, S (Sandile) 1 1.0 1 0 0 100.0 1233.3 425.0 1658.3 View list
9 1040161563 Mkentane, I (Indiphile) 1 1.0 1 0 0 100.0 1338.2 425.0 1763.2 View list
10 1010192125 Mooketsi, T (Tshegofatso) 1 1.0 1 0 0 100.0 1233.3 425.0 1658.3 View list
11 1780158298 Moultrey, A (Antonio Chrispian) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
12 194025886 Mthunzi, C (Clive) 1 1.0 1 0 0 100.0 1338.2 425.0 1763.2 View list
13 101056732 Ngwala, L (Lutho) 1 1.0 1 0 0 100.0 1338.2 425.0 1763.2 View list
14 183028399 Ntombela, NL (Lwazi) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
15 1100306870 Purchase, N (Nathan) 1 1.0 1 0 0 100.0 1246.8 425.0 1671.8 View list
16 1090114761 Saunders, W (Wayde) 1 1.0 1 0 0 100.0 1246.8 425.0 1671.8 View list
17 1030140207 Sidumo, A (Anga) 1 1.0 1 0 0 100.0 1338.2 425.0 1763.2 View list
18 1030146500 Ditsepeng, M (Moteka Reamogetse) 1 0.5 0 1 0 50.0 1338.2 0.0 1338.2 View list
19 193004515 Chettiar, E (Evasan) 1 0.5 0 1 0 50.0 1233.3 0.0 1233.3 View list
20 1000133744 Masilela, NK (Ntokozo King) 1 0.5 0 1 0 50.0 1338.2 0.0 1338.2 View list