Surname or Chess SA id..
Chess SA Region AOC

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Calvin Nicholas Jacobs

109086379
Tshwane (GTP)
Personal
Main rating
Rating 2142.2
K-factor 20
Floor 1659
Highest 2168.5 (2025-09-01)
Min/Max +/- allowed 42
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1990.2
Final +/- 0
New Rating
()
Rating 2142.2
K-factor 20
Floor 1659
Highest 2168.5 (2025-09-01)
Min/Max +/- allowed 41.7
Standard rating
Rating 2155.8
K-factor 20
Floor 1677.8
Highest 2179.5 (2025-09-01)
Min/Max +/- allowed 41.1
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 2032.7
Final +/- 0
New Rating
()
Rating 2155.8
K-factor 20
Floor 1677.8
Highest 2179.5 (2025-09-01)
Min/Max +/- allowed 41.1
Rapid rating
Rating 1626.4
K-factor 28
Floor 1126.4
Highest 1626.4 (2025-03-01)
Min/Max +/- allowed 90.3
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1560.1
Final +/- 0
New Rating
()
Rating 1626.4
K-factor 28
Floor 1126.4
Highest 1626.4 (2025-03-01)
Min/Max +/- allowed 90.3
Blitz rating
Rating 1908.5
K-factor 24
Floor 1432.7
Highest 1932.7 (2024-02-01)
Min/Max +/- allowed 58.4
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1868.7
Final +/- 0
New Rating
()
Rating 1908.5
K-factor 24
Floor 1432.7
Highest 1932.7 (2024-02-01)
Min/Max +/- allowed 58.4
Rating Graph
Tournaments
No tournaments found.
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 MCA Welcome JHB 2026 (Expert) Standard 2026-02-07 2026-02-07 Johannesburg Metro (GJM) 5 2159.3 5 2.5 2012.4 0 Details
2 MCA Tshwane Welcome 2026 (A) Standard 2026-01-24 2026-01-24 Tshwane (GTP) 5 2159.3 5 3.5 2117.6 0 Details
3 Centurion Chess Club Year End Blitz 2025 Blitz 2025-12-03 2025-12-03 Tshwane (GTP) 9 2155.1 9 8 1933.4 0 Details
4 Gauteng Inter-Region at Emerald Resort 2025 (U20) Standard 2025-12-06 2025-12-07 Sedibeng (GSV) 5 2155.1 5 5 2107.8 0 Details
5 Tshwane Chess Club Clash 2025 (Prestige) Standard 2025-09-13 2025-09-13 Tshwane (GTP) 5 2168.5 5 3.5 2025.8 0 Details
6 2025 Alekhine Open (A) Standard 2025-09-06 2025-09-07 Tshwane (GTP) 5 2168.5 5 5 2208.6 0 Details
7 2025 Midstream Open Chess Tournament (A) Standard 2025-08-25 2025-08-25 Tshwane (GTP) 5 2144.1 5 5 2228.6 0 Details
8 2025 Menlo Open (A) Standard 2025-07-26 2025-07-26 Tshwane (GTP) 5 1963.2 5 5 2193.2 0 Details
9 MCA Winter Chill Classic 2025 (Expert) Standard 2025-07-19 2025-07-19 Johannesburg Metro (GJM) 5 1963.2 4 2.5 2210 0 Details
10 South African Open 2025 (Championship) Classical 2025-06-28 2025-07-05 Johannesburg Metro (GJM) 11 1963.2 11 6.5 2173.9 0 Details
11 South African Open 2025 (Blitz) Blitz 2025-07-02 2025-07-02 Johannesburg Metro (GJM) 9 1963.2 9 8 2222.8 0 Details
12 2025 Elise Steenkamp Open Chess Tournament (King) Standard 2025-06-14 2025-06-16 Tshwane (GTP) 7 1948.8 7 5.5 2028.3 0 Details
13 Mzansi Africa Classic 2025 (Expert) Standard 2025-05-17 2025-05-17 Johannesburg Metro (GJM) 5 1939.8 5 3 1972.4 0 Details
14 Centurion Club Closed Chess Tournament 2025 Standard 2025-05-10 2025-05-10 Tshwane (GTP) 5 1939.8 5 5 1864.5 0 Details
15 Moja Chess Extravaganza 2025 (B) Classical 2025-04-26 2025-05-01 Johannesburg Metro (GJM) 9 1939.8 6 4 1932.3 0 Details
16 Moja Chess Extravaganza 2025 (Blitz) Blitz 2025-04-26 2025-04-26 Johannesburg Metro (GJM) 7 1939.8 7 5 2031.2 0 Details
17 2025 Mid Gauteng Open Chess Tournament (A) Standard 2025-04-12 2025-04-12 Tshwane (GTP) 5 1974.7 5 2.5 1838.4 0 Details
18 South African Junior Closed Chess Championships 2025 (U16 Open) Classical 2025-03-31 2025-04-05 Cape Winelands (WCW) 9 1974.7 9 6 1896.5 0 Details
19 Lubowski Open 2025 (A) Standard 2025-03-21 2025-03-22 Tshwane (GTP) 5 1967 5 3.5 2022.4 0 Details
20 2025 Chris Greyling Open Chess Tournament (A) Standard 2025-03-15 2025-03-15 Tshwane (GTP) 5 1967 5 4 2010.1 0 Details
21 MCA Summer March 2025 (Expert) Standard 2025-03-08 2025-03-08 Johannesburg Metro (GJM) 5 1967 4 2.5 1929.7 0 Details
22 2025 KSNG Open (A) Standard 2025-02-22 2025-02-22 Tshwane (GTP) 5 1961.6 5 3.5 1955.7 0 Details
23 JMC Rapid The Bridge School 2025 (Open) Rapid 2025-02-23 2025-02-23 Johannesburg Metro (GJM) 7 1961.6 7 4.5 1858.4 0 Details
24 MCA Welcome 2025 (Expert) Standard 2025-02-15 2025-02-15 Johannesburg Metro (GJM) 5 1961.6 5 3.5 1980.6 0 Details
25 2025 Blou Bul Open Chess Tournament (A) Standard 2025-02-08 2025-02-08 Tshwane (GTP) 5 1961.6 5 3 1895.6 0 Details
26 2025 Piet Robbertse Fide Rated Open Chess Tournament (A) Standard 2025-02-01 2025-02-02 Tshwane (GTP) 5 1961.6 5 4 2108.2 0 Details
27 2025 Tshwane Chess OPEN Registration Tournament (A2) Standard 2025-01-25 2025-01-25 Tshwane (GTP) 5 1978.3 5 3 1811.8 0 Details
28 CCC Blitz 2024 Blitz 2024-12-04 2024-12-04 Tshwane (GTP) 9 1970.6 9 8 1892.4 0 Details
29 Gauteng Inter-Region at UJ 2024 (U18 Open) Standard 2024-12-07 2024-12-08 Johannesburg Metro (GJM) 5 1970.6 5 4.5 2048.6 0 Details
30 Laerskool Midvaal Rapid 16 Nov 2024 (Prestige) Rapid 2024-11-16 2024-11-16 Sedibeng (GSV) 5 1955 5 4.5 2143 0 Details
31 2024 Tshwane Chess Club Clash (Prestige) Standard 2024-10-12 2024-10-12 Tshwane (GTP) 5 1964 4 2.5 1980.3 0 Details
32 2024 Gauteng North Open Chess Tournament (A) Standard 2024-10-05 2024-10-06 Tshwane (GTP) 5 1964 5 3.5 1878.6 0 Details
33 2024 Moja Chess Extravaganza (Prestige) Classical 2024-09-25 2024-09-29 Frances Baard (NCF) 9 1914.1 9 4.5 1946.4 0 Details
34 Centurion Chess Open Tournament 2024 (A) Standard 2024-09-21 2024-09-21 Tshwane (GTP) 5 1914.1 5 4.5 2107.9 0 Details
35 JCC Khelo India 1st Annual Chess Tournament 2024 (Pestige) Standard 2024-08-31 2024-08-31 Johannesburg Metro (GJM) 5 1914.1 5 3 2025.6 0 Details
36 Bojanala's FIDE In The Sparkling Waters 2024 (Prestige) Classical 2024-08-16 2024-08-18 Bojanala Platina (NBR) 6 1969.5 6 2.5 1595.7 0 Details
37 2024 Alekhine Open Chess Tournament (A) Standard 2024-08-09 2024-08-10 Tshwane (GTP) 5 1969.5 5 4 1874.9 0 Details
38 2024 Tshwane Chess FIDE RATED Blitz League Championship 3 Blitz 2024-07-21 2024-07-21 Tshwane (GTP) 9 1969.5 9 6 1719 0 Details
39 Eureka Open 27 July 2024 (A) Standard 2024-07-27 2024-07-27 Sedibeng (GSV) 5 1932.3 5 3.5 2072.3 0 Details
40 2024 Midstream College Open Chess Tournament (A) Standard 2024-07-20 2024-07-20 Tshwane (GTP) 5 1932.3 5 3.5 1976 0 Details
41 Menlopark Open Chess Tournament 2024 (A) Standard 2024-07-13 2024-07-13 Tshwane (GTP) 5 1932.3 5 3.5 1930.8 0 Details
42 2024 African Youth Chess Championship Classical 2024-06-16 2024-06-22 Tshwane (GTP) 9 1946.7 9 6.5 2064.2 0 Details
43 2024 Tshwane Chess FIDE RATED Blitz League Championship 1 Blitz 2024-05-26 2024-05-26 Tshwane (GTP) 9 1946.7 9 6 1729.9 0 Details
44 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (A) Standard 2024-06-01 2024-06-01 Tshwane (GTP) 5 1946.7 4 1.5 1532.3 0 Details
45 2024 Centurion Club Closed Chess Tournament (A) Standard 2024-05-25 2024-05-25 Tshwane (GTP) 5 1727.9 5 5 2051.8 0 Details
46 JMC Crawford International Sandton 2024 (A) Standard 2024-05-11 2024-05-11 Johannesburg Metro (GJM) 5 1727.9 5 2.5 2062.7 0 Details
47 2024 Mid Gauteng Open Chess Tournament (A) Standard 2024-05-02 2024-05-02 Tshwane (GTP) 5 1727.9 5 3.5 1878 0 Details
48 South African Junior Closed Chess Championship 2024 (U16 Open) Classical 2024-04-27 2024-05-01 Ekurhuleni (GE) 9 1727.9 9 5.5 1863.7 0 Details
49 2024 KSNG CHess Academy Open Tournament (A) Standard 2024-04-06 2024-04-06 Tshwane (GTP) 5 1756.3 5 2 1541.2 0 Details
50 2024 Wynie Robbertse Chess Tournament (A) Standard 2024-03-02 2024-03-02 Tshwane (GTP) 5 1763.5 5 3 1717.7 0 Details
Game statistics ( )
Games 0
Wins 0
Draws 0
Losses 0
White 0
Black 0
White wins 0
Black wins 0
Score 0
Percent 0
Dp 0
AOR 0
Performance 0
Game statistics ()
Games 10
Wins 5
Draws 2
Losses 3
White 4
Black 6
White wins 2
Black wins 3
Score 6
Percent 60
Dp 85
AOR 1980
Performance 2065
Game statistics (History)
Games 824
Wins 472
Draws 131
Losses 221
White 426
Black 398
White wins 245
Black wins 227
Score 537.5
Percent 65.2
Dp 129.5
AOR 1558
Performance 1687.5
Rankings (Main)
National
Overall 30
Gender 30
Age group 3
Gender/Age 3
Provincial
Overall 13
Gender 13
Age group 3
Gender/Age 3
Regional
Overall 5
Gender 5
Age group 1
Gender/Age 1
Rankings (Standard)
National
Overall 28
Gender 28
Age group 3
Gender/Age 3
Provincial
Overall 11
Gender 11
Age group 3
Gender/Age 3
Regional
Overall 4
Gender 4
Age group 1
Gender/Age 1
Rankings (Rapid)
National
Overall 132
Gender 130
Age group 8
Gender/Age 8
Provincial
Overall 32
Gender 32
Age group 2
Gender/Age 2
Regional
Overall 8
Gender 8
Age group 1
Gender/Age 1
Rankings (Blitz)
National
Overall 31
Gender 31
Age group 2
Gender/Age 2
Provincial
Overall 13
Gender 13
Age group 1
Gender/Age 1
Regional
Overall 6
Gender 6
Age group 1
Gender/Age 1
Performance ( )
Games 0
Score 0
Percent 0
Aor 0
Dp 0
Prat 0
Performance ()
Games 10
Score 6
Percent 60
Aor 1980
Dp 85
Prat 2065
Performance (12 months)
Games 126
Score 95.5
Percent 75.8
Aor 1828.1
Dp 219.2
Prat 2047.3
Performance (History)
Games 824
Score 537.5
Percent 65.2
Aor 1558
Dp 129.5
Prat 1687.5
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Sathish, A (Abinavah) 22 12 10 2018 Swartkop Open (C) 2025 Alekhine Open (A) Details
Overall 2 Jacobs, TB (Tiaan Benjamin) 16 9 7 2018 Alekhine Open (C) Gauteng Inter-Region at Emerald Resort 2025 (U20) Details
Overall 3 Mabusela, JM (Johannes Manyedi) 14 8 6 2022 Tshwane Chess Open Registration Tournament (A) South African Open 2025 (Blitz) Details
Overall 4 Boheim, E (Eugene) 11 7 4 South African Junior Wildcard Championships 2017 (U10 Open) South African Junior Closed Chess Championships 2025 (U16 Open) Details
Overall 5 Letsoalo, PM (Peter Mogatli) 10 5 5 2019 Centurion Club Tournament Open Centurion Chess Club Year End Blitz 2025 Details
Standard 1 Sathish, A (Abinavah) 17 9 8 2018 Swartkop Open (C) 2025 Alekhine Open (A) Details
Standard 2 Jacobs, TB (Tiaan Benjamin) 13 6 7 2018 Alekhine Open (C) Gauteng Inter-Region at Emerald Resort 2025 (U20) Details
Standard 3 Boheim, E (Eugene) 11 7 4 South African Junior Wildcard Championships 2017 (U10 Open) South African Junior Closed Chess Championships 2025 (U16 Open) Details
Standard 4 Potgieter, E (Edward) 10 3 7 2018 Menlo Open Chess Tournament (C) 2025 Blou Bul Open Chess Tournament (A) Details
Standard 5 Mabusela, JM (Johannes Manyedi) 8 6 2 2022 Tshwane Chess Open Registration Tournament (A) 2025 Mid Gauteng Open Chess Tournament (A) Details
Rapid 1 Maliga, N (Norman) 2 0 2 CPH Chess Clubs Challenge 2022 (B) Mzansi Spring Rapid 2023 Details
Blitz 1 Mabusela, JM (Johannes Manyedi) 6 2 4 Rachella`s Cafe Blitz Tournament 3 2022 South African Open 2025 (Blitz) Details
Blitz 2 Pillay, N (Nico) 5 2 3 2022 Centurion Club Blitz Centurion Chess Club Year End Blitz 2025 Details
Blitz 3 Sathish, A (Abinavah) 5 3 2 South African Junior Blitz 2018 (U10) 2024 Tshwane Chess FIDE RATED Blitz League Championship 3 Details
Blitz 4 Schutte, R (Rico) 4 1 3 2021 CCC Inhouse Blitz (A) Centurion Chess Club Year End Blitz 2025 Details
Blitz 5 Nene, TH (Themba Hope) 4 2 2 2019 South African Juior Blitz Championship (A) 2024 Tshwane Chess FIDE RATED Blitz League Championship 1 Details