Player Page

Jacobs, CN (Calvin Nicholas)
Dob: 2009/09/22 (U16)
Gender: Male
Chess SA id: 109086379
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2024/07/20 (5 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 rating1932.3
Current Weighted rating1748.0
Current Weighted performance1788.2
Current official/published rating (highest between Raw, WR and WP)1932.3
Current highest rating achieved1946.7
Current floor (min rating allowed)1446.7
Current K-factor24
Games played this month10
Score (S)7.0
Expected score (We)6.74
Difference (S-We)0.22
Current Raw change (no limits, including tournament time weight)5.2
Current min/max change allowed (with limits)±58.4
Current Raw change used (final)5.2
Projected new Raw rating1937.5
Projected new Weighed rating1610.3
Projected new Weighted performance1880.7
Projected new final Raw rating (if new WP > new Raw)1937.5
Projected new highest rating1946.7
Projected new floor1446.7
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1937.5
Projected effective change (new Official - current Official)+5.2
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 rating1939.9
Current Weighted rating1762.0
Current Weighted performance1872.7
Current official/published rating (highest between Raw, WR and WP)1939.9
Current highest rating achieved1960.3
Current floor (min rating allowed)1460.3
Current K-factor24
Games played this month10
Score (S)7.0
Expected score (We)6.57
Difference (S-We)0.43
Current Raw change (no limits, including tournament time weight)10.3
Current min/max change allowed (with limits)±57.8
Current Raw change used (final)10.3
Projected new Raw rating1950.2
Projected new Weighed rating1623.2
Projected new Weighted performance1912.9
Projected new final Raw rating (if new WP > new Raw)1950.2
Projected new highest rating1960.3
Projected new floor1460.3
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1950.2
Projected effective change (new Official - current Official)+10.3
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 rating1433.9
Current Weighted rating1246.1
Current Weighted performance1378.5
Current official/published rating (highest between Raw, WR and WP)1433.9
Current highest rating achieved1433.9
Current floor (min rating allowed)933.9
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)±118.8
Current Raw change used (final)0.0
Projected new Raw rating1433.9
Projected new Weighed rating1155.2
Projected new Weighted performance1378.5
Projected new final Raw rating (if new WP > new Raw)1433.9
Projected new highest rating1433.9
Projected new floor933.9
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1433.9
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 rating1887.8
Current Weighted rating1765.6
Current Weighted performance1589.1
Current official/published rating (highest between Raw, WR and WP)1887.8
Current highest rating achieved1932.7
Current floor (min rating allowed)1432.7
Current K-factor24
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)±62.2
Current Raw change used (final)0.0
Projected new Raw rating1887.8
Projected new Weighed rating1629.4
Projected new Weighted performance1589.1
Projected new final Raw rating (if new WP > new Raw)1887.8
Projected new highest rating1932.7
Projected new floor1432.7
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1887.8
Projected effective change (new Official - current Official)=0.0
Tournaments
Tournament: 2024 Midstream College Open Chess Tournament (A)
Start: 2024/07/20  End: 2024/07/20  Host: GTP  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 3.5
Main rating: 1932.3  Rating gain/loss: 6.0
Type rating: 1939.9  Rating gain/loss: 11.3
Analysis
Tournament: Menlopark Open Chess Tournament 2024 (A)
Start: 2024/07/13  End: 2024/07/13  Host: GTP  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 3.5
Main rating: 1932.3  Rating gain/loss: -0.8
Type rating: 1939.9  Rating gain/loss: -1.0
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
13 2024 Midstream College Open Chess Tournament (A) 2024/07/20 2024/07/20 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1932.3 1939.9 Analysis
12 Menlopark Open Chess Tournament 2024 (A) 2024/07/13 2024/07/13 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1932.3 1939.9 Analysis
11 2024 African Youth Chess Championship 2024/06/16 2024/06/22 South Africa (RSA) Standard 120 1.00 9 9 6.5 1946.7 1960.3 Analysis
10 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (A) 2024/06/01 2024/06/01 Tshwane (GTP) Standard 60 0.83 5 4 1.5 1946.7 1960.3 Analysis
9 2024 Tshwane Chess FIDE RATED Blitz League Championship 1 2024/05/26 2024/05/26 Tshwane (GTP) Blitz 5 0.18 9 9 6.0 1946.7 1932.7 Analysis
8 2024 Centurion Club Closed Chess Tournament (A) 2024/05/25 2024/05/25 Tshwane (GTP) Standard 60 0.83 5 5 5.0 1727.9 1732.8 Analysis
7 JMC Crawford International Sandton 2024 (A) 2024/05/11 2024/05/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1727.9 1732.8 Analysis
6 2024 Mid Gauteng Open Chess Tournament (A) 2024/05/02 2024/05/02 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1727.9 1732.8 Analysis
5 South African Junior Closed Chess Championship 2024 (U16 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 5.5 1727.9 1732.8 Analysis
4 2024 KSNG CHess Academy Open Tournament (A) 2024/04/06 2024/04/06 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1756.3 1769.8 Analysis
3 2024 Wynie Robbertse Chess Tournament (A) 2024/03/02 2024/03/02 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1763.5 1781.8 Analysis
2 2024 Blou Bul Open Chess Tournament (A) 2024/02/10 2024/02/10 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1736.1 1750.7 Analysis
1 2024 Gauteng Inter-Region Chess Championship (Adult B+Fifty+Ladies) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 4.0 1740.6 1755.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
101 2024 Midstream College Open Chess Tournament (A) 2024/07/20 2024/07/20 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1932.3 1939.9 Analysis
100 Menlopark Open Chess Tournament 2024 (A) 2024/07/13 2024/07/13 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1932.3 1939.9 Analysis
99 2024 African Youth Chess Championship 2024/06/16 2024/06/22 South Africa (RSA) Standard 120 1.00 9 9 6.5 1946.7 1960.3 Analysis
98 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (A) 2024/06/01 2024/06/01 Tshwane (GTP) Standard 60 0.83 5 4 1.5 1946.7 1960.3 Analysis
97 2024 Tshwane Chess FIDE RATED Blitz League Championship 1 2024/05/26 2024/05/26 Tshwane (GTP) Blitz 5 0.18 9 9 6.0 1946.7 1932.7 Analysis
96 2024 Centurion Club Closed Chess Tournament (A) 2024/05/25 2024/05/25 Tshwane (GTP) Standard 60 0.83 5 5 5.0 1727.9 1732.8 Analysis
95 JMC Crawford International Sandton 2024 (A) 2024/05/11 2024/05/11 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1727.9 1732.8 Analysis
94 2024 Mid Gauteng Open Chess Tournament (A) 2024/05/02 2024/05/02 Tshwane (GTP) Standard 60 0.83 5 5 3.5 1727.9 1732.8 Analysis
93 South African Junior Closed Chess Championship 2024 (U16 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 5.5 1727.9 1732.8 Analysis
92 2024 KSNG CHess Academy Open Tournament (A) 2024/04/06 2024/04/06 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1756.3 1769.8 Analysis
91 2024 Wynie Robbertse Chess Tournament (A) 2024/03/02 2024/03/02 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1763.5 1781.8 Analysis
90 2024 Blou Bul Open Chess Tournament (A) 2024/02/10 2024/02/10 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1736.1 1750.7 Analysis
89 2024 Gauteng Inter-Region Chess Championship (Adult B+Fifty+Ladies) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 4.0 1740.6 1755.4 Analysis
88 Mzansi Summer Blitz 2023 2023/12/09 2023/12/09 Johannesburg Metro (GJM) Rapid 10 0.29 7 7 4.5 1677.2 1165.6 Analysis
87 CCC Blitz All 2023 2023/12/06 2023/12/06 Tshwane (GTP) Blitz 5 0.18 9 9 8.0 1677.2 1605.4 Analysis
86 CCC Midstream Rapid 2023 2023/11/27 2023/11/27 Tshwane (GTP) Rapid 15 0.39 5 5 3.0 1691.6 1105.2 Analysis
85 Africawide Chess Championship 2023 (Open) 2023/11/03 2023/11/05 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.5 1691.6 1703.9 Analysis
84 2023 Centurion Chess Open (A) 2023/09/23 2023/09/23 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1695.2 1711.7 Analysis
83 Mzansi Spring Rapid 2023 2023/09/02 2023/09/02 Johannesburg Metro (GJM) Rapid 15 0.39 7 7 4.5 1695.2 970.8 Analysis
82 2023 Etienne Lewis Closed Tournament (U16) 2023/08/25 2023/08/27 Tshwane (GTP) Standard 90 0.94 7 7 5.0 1701.3 1721.2 Analysis
123456
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 76 43 15 18 50.5 66.4 139.8 1717.2 1857.0
White 40 20 9 11 24.5 61.3 95.6 1746.2 1841.8
Black 36 23 6 7 26.0 72.2 188.9 1684.9 1873.8
Standard All 67 37 15 15 44.5 66.4 139.6 1734.5 1874.0
White 36 18 9 9 22.5 62.5 106.3 1769.8 1876.0
Black 31 19 6 6 22.0 71.0 178.2 1693.5 1871.7
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 6 0 3 6.0 66.7 141.7 1588.2 1729.9
White 4 2 0 2 2.0 50.0 0.0 1533.4 1533.4
Black 5 4 0 1 4.0 80.0 255.0 1632.1 1887.1
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 594 327 85 182 369.5 62.2 103.7 1466.1 1569.8
White 307 170 42 95 191.0 62.2 103.8 1486.4 1590.2
Black 287 157 43 87 178.5 62.2 103.7 1444.4 1548.0
Standard All 457 243 72 142 279.0 61.1 93.9 1447.2 1541.2
White 237 134 37 66 152.5 64.3 121.9 1454.6 1576.5
Black 220 109 35 76 126.5 57.5 63.7 1439.3 1503.1
Rapid All 34 17 4 13 19.0 55.9 50.0 1495.7 1545.7
White 18 4 2 12 5.0 27.8 -188.9 1677.8 1488.9
Black 16 13 2 1 14.0 87.5 318.8 1290.8 1609.6
Blitz All 103 67 9 27 71.5 69.4 165.0 1540.1 1705.1
White 52 32 3 17 33.5 64.4 122.6 1565.3 1687.9
Black 51 35 6 10 38.0 74.5 208.3 1514.4 1722.7
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 109069454 Sathish, A (Abinavah) 16 7.5 6 3 7 46.9 1515.0 -26.6 1488.5 View list
2 107086377 Jacobs, TB (Tiaan Benjamin) 15 9.0 5 8 2 60.0 1623.6 85.0 1708.6 View list
3 184019054 Mabusela, JM (Johannes) 9 3.0 2 2 5 33.3 1743.3 -141.7 1601.7 View list
4 109069449 Boheim, E (Eugene) 8 6.0 6 0 2 75.0 1318.9 212.5 1531.4 View list
5 177017896 Letsoalo, PM (Peter) 8 4.0 4 0 4 50.0 1630.5 0.0 1630.5 View list
6 108064021 Coetsee, D (Dewald) 7 5.5 5 1 1 78.6 1580.3 242.9 1823.1 View list
7 108076196 Potgieter, E (Edward) 7 3.5 3 1 3 50.0 1536.3 0.0 1536.3 View list
8 209092675 Ramlall, S (Sanjana) 6 5.0 5 0 1 83.3 1345.4 283.3 1628.7 View list
9 107069948 Jones, W (William) 6 3.0 2 2 2 50.0 1561.3 0.0 1561.3 View list
10 184027327 Nene, TH (Themba) 6 2.0 2 0 4 33.3 1716.8 -141.7 1575.2 View list
11 101015487 Khumalo, KB (Keith) 6 0.0 0 0 6 0.0 1604.5 -425.0 1179.5 View list
12 194030356 Pillay, N (Nico) 5 5.0 5 0 0 100.0 1744.3 425.0 2169.3 View list
13 208088604 Monnig, E (Erika) 5 3.5 3 1 1 70.0 1572.0 170.0 1742.0 View list
14 109086362 Yang, A (Alex) 5 3.5 2 3 0 70.0 1484.6 170.0 1654.6 View list
15 109089434 Van Loggerenberg, L (Logan) 4 4.0 4 0 0 100.0 1505.9 425.0 1930.9 View list
16 193020018 Malan, A (Aiden) 4 3.5 3 1 0 87.5 1493.6 318.8 1812.3 View list
17 210083428 Rautenbach, H (Helen Christine) 4 3.5 3 1 0 87.5 1674.0 318.8 1992.7 View list
18 105059134 De Swardt, E (Eduan) 4 3.0 3 0 1 75.0 1306.6 212.5 1519.1 View list
19 109083783 Kushar, T (Tristan) 4 3.0 3 0 1 75.0 1385.2 212.5 1597.7 View list
20 104071191 Mkotong, B (Boipelo) 4 2.5 2 1 1 62.5 1746.4 106.3 1852.7 View list