PLAYER PAGE

Calvin John Klaasen

187015737
Cape Town (WCT)
Personal
Main rating
Rating 2201.5
K-factor 16
Floor 1764.2
Highest 2264.2 (2018-07-01)
Min/Max +/- allowed 36
Rating Change
()
Games 11
Score 4.5
We 4.64
SWe -0.14
Temp +/- -2.2
Penalties 0
Weight perform 2042.1
Final +/- -2.2
New Rating
()
Rating 2199.3
K-factor 16
Floor 1764.2
Highest 2264.2 (2018-07-01)
Min/Max +/- allowed 36.4
Standard rating
Rating 2227.4
K-factor 16
Floor 1773
Highest 2285.3 (2018-05-01)
Min/Max +/- allowed 35.3
Rating Change
()
Games 11
Score 4.5
We 4.67
SWe -0.17
Temp +/- -2.7
Penalties 0
Weight perform 2071.6
Final +/- -2.7
New Rating
()
Rating 2224.7
K-factor 16
Floor 1773
Highest 2285.3 (2018-05-01)
Min/Max +/- allowed 35.3
Rapid rating
Rating 2183.7
K-factor 16
Floor 1760.8
Highest 2260.8 (2018-07-01)
Min/Max +/- allowed 36.6
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 1538
Final +/- 0
New Rating
()
Rating 2183.7
K-factor 16
Floor 1760.8
Highest 2260.8 (2018-07-01)
Min/Max +/- allowed 36.6
Blitz rating
Rating 2199.4
K-factor 16
Floor 1759.7
Highest 2259.7 (2019-01-01)
Min/Max +/- allowed 36.6
Rating Change
()
Games 0
Score 0
We 0
SWe 0
Temp +/- 0
Penalties 0
Weight perform 966.3
Final +/- 0
New Rating
()
Rating 2199.4
K-factor 16
Floor 1759.7
Highest 2259.7 (2019-01-01)
Min/Max +/- allowed 36.6
Rating Graph
Tournaments
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 2026 South African Closed Chess Championships (Open) Classical 2026-02-21 2026-03-01 Johannesburg Metro (GJM) 11 2201.5 11 4.5 2194.7 -2.2 Details
# Tournament Type Start End Host Rounds Rating Games Score Perform Rat+/- Details
1 Cape Town Chess Federation Club League 2025 (A) Classical 2025-07-26 2025-09-27 Cape Town (WCT) 11 2199.2 3 2.5 2197.3 0 Details
2 Cape Gambit Invitational 2025 Classical 2025-04-18 2025-04-21 Cape Town (WCT) 7 2199.7 7 3 2216.8 0 Details
3 Hermanus Chess Club Open 2025 (Championship) Rapid 2025-04-12 2025-04-12 Overberg (WOS) 7 2199.7 7 4.5 2137.8 0 Details
4 Cape Town Open Chess Festival 2025 (A) Standard 2025-03-22 2025-03-23 Cape Town (WCT) 6 2195.6 6 5 2260.6 0 Details
5 Western Cape Closed 2025 (A) Standard 2025-03-08 2025-03-09 Cape Town (WCT) 6 2195.6 6 4.5 2159 0 Details
6 Cape of Good Hope Open 2025 (Championship) Standard 2025-02-22 2025-02-23 Cape Town (WCT) 6 2192.1 6 4.5 2227.8 0 Details
7 Cape Town Masters Challenge 2025 (Masters) Classical 2025-01-06 2025-01-11 Cape Town (WCT) 9 2195.2 5 3.5 2116.8 0 Details
8 CT League 2024 (A) Classical 2024-07-20 2024-09-07 Cape Town (WCT) 11 2204.8 5 3.5 2107.7 0 Details
9 Hermanus Chess Club Open 2024 (Championship) Rapid 2024-04-20 2024-04-20 Overberg (WOS) 7 2204.8 7 4.5 2107.2 0 Details
10 South African Closed Chess Championship 2024 (Open) Classical 2024-03-25 2024-04-02 Cape Town (WCT) 11 2204.8 11 5.5 2235.7 0 Details
11 Steinitz Club Team Blitz Championship 2024 Blitz 2024-02-15 2024-02-15 Cape Town (WCT) 7 2208.8 7 4.5 1963.2 0 Details
12 Cape Town Masters Challenge 2024 (Masters) Classical 2024-01-03 2024-01-07 Cape Town (WCT) 9 2209.5 9 6 2199.3 0 Details
13 2023 Moja Chess Extravaganza (Prestige) Classical 2023-09-30 2023-10-04 Frances Baard (NCF) 9 2162.9 9 5 2035.3 0 Details
14 WP Club League 2023 (A) Classical 2023-07-29 2023-09-09 Cape Town (WCT) 11 2162.4 10 6.5 2135.8 0 Details
15 CW Top Schools 2023 (Advanced) Standard 2023-08-11 2023-08-13 West Coast (WCU) 6 2170.1 6 5 2022.9 0 Details
16 GPCA Rapid 2023 (Championship) Rapid 2023-06-24 2023-06-24 Cape Town (WCT) 7 2189.4 7 3.5 1911.1 0 Details
17 CKC Invitational Masters 2023 Classical 2023-06-09 2023-06-11 Cape Town (WCT) 5 2189.4 5 2.5 2172.1 0 Details
18 2023 African Individual Chess Championship Classical 2023-05-06 2023-05-13 Egypt (EGY) 9 2178.2 9 5 2246.9 0 Details
19 Cape Town Open 2023 (Championship) Standard 2023-03-24 2023-03-26 Cape Town (WCT) 6 2185.3 6 4.5 2113.4 0 Details
20 Cape Town Masters Challenge 2023 (IM Norm) Classical 2023-01-04 2023-01-08 Cape Town (WCT) 9 2187.7 9 4 2178.5 0 Details
21 Western Cape Club Championship 2022 (Tier 1) Standard 2022-10-07 2022-10-09 Cape Town (WCT) 6 2189.1 5 4 2180.8 0 Details
22 2022 Western Province Club League (Premier) Classical 2022-08-20 2022-10-01 Cape Town (WCT) 11 2189.1 10 7.5 2164.9 0 Details
23 South African Open 2022 (Championship) Classical 2022-07-09 2022-07-17 Cape Town (WCT) 11 2211.5 11 8 2092 0 Details
24 2022 South African Closed Chess Championships (Open) Classical 2022-05-07 2022-05-14 Chess South Africa (CSA) 9 2226.7 8 3.5 2124 0 Details
25 2022 Zone 4.5 Individual Chess Championships Classical 2022-03-06 2022-03-12 Lesotho (LES) 9 2198.4 9 7 2347.3 0 Details
26 WP Open 2021 (Championship) Standard 2021-05-08 2021-05-09 Cape Town (WCT) 6 2194.4 6 5 2202.7 0 Details
27 2020 Western Province Open (Championship) Standard 2020-03-07 2020-03-08 Cape Town (WCT) 6 2197 6 4.5 2159.9 0 Details
28 Nelson Mandela Rapid 2020 (Open) Rapid 2020-02-01 2020-02-01 Cape Town (WCT) 6 2198.3 6 5 2191.8 0 Details
29 2020 Cape Of Good Hope Open (Elite) Standard 2020-02-21 2020-02-23 Cape Town (WCT) 6 2198.3 6 4.5 2149.5 0 Details
30 2019 South African Juior Blitz Championship (A) Blitz 2020-01-05 2020-01-05 4 Knights (4K) 7 2204 7 4.5 1865.1 0 Details
31 2019 South African Closed Chess Championships (Open A) Classical 2019-12-07 2019-12-17 Cape Town (WCT) 11 2228.6 11 4.5 2103.9 0 Details
32 International Chess Tournament - Luanda - SADC 2019 Classical 2019-11-11 2019-11-16 Angola (ANG) 9 2249.1 9 3.5 2132.6 0 Details
33 2019 Western Province League (Premier) Classical 2019-07-27 2019-09-07 Cape Town (WCT) 11 2243.8 11 9 2271.4 0 Details
34 2019 National Club Chess Championships (A) Classical 2019-09-27 2019-09-29 Cape Town (WCT) 6 2243.8 6 5 2157.8 0 Details
35 2019 African Chess Individual Championship Open Classical 2019-07-09 2019-07-17 Tunisia (TUN) 9 2241.6 9 5 2251.3 0 Details
36 Imam Haron 50th Commemoration Event Open 2019 Rapid 2019-06-15 2019-06-15 Cape Town (WCT) 7 2256.6 7 5.5 1829.3 0 Details
37 DSK Chess Tournament 2019 (Open) Rapid 2019-06-08 2019-06-08 Cape Town (WCT) 7 2256.6 7 6.5 2095.1 0 Details
38 2019 Elsies River Open (Elite) Standard 2019-06-22 2019-06-23 Cape Town (WCT) 6 2256.6 6 5 2182.3 0 Details
39 Stellenberg Youth Chess Championship 2019 (Presige) Rapid 2019-05-01 2019-05-01 Cape Town (WCT) 6 2253 6 4 2240.6 0 Details
40 2019 Western Province Open (Elite) Standard 2019-05-25 2019-05-26 Cape Town (WCT) 6 2253 6 5 2243.2 0 Details
41 Steinitz Chess Festival 2019 (A) Standard 2019-04-05 2019-04-07 Cape Town (WCT) 6 2247.9 6 5 2186.3 0 Details
42 2019 Capablanca Chess Festival (RR IM Norm) Classical 2019-04-18 2019-04-22 Tshwane (GTP) 9 2247.9 9 5 2277.6 0 Details
43 2019 Cape Town Classic Chess Festival (Rapid) Rapid 2019-03-30 2019-03-30 Cape Town (WCT) 7 2246.3 7 6.5 2178.1 0 Details
44 2019 Cape Town Classic Chess Festival (Blitz) Blitz 2019-03-29 2019-03-29 Cape Town (WCT) 9 2246.3 9 7.5 2149.5 0 Details
45 Cape of Good Hope Open 2019 (Elite) Standard 2019-01-25 2019-01-27 Cape Town (WCT) 6 2261.3 6 3.5 2098.5 0 Details
46 ACL Open 2018 (Elite) Classical 2018-12-07 2018-12-09 Cape Town (WCT) 5 2248.2 5 4.5 2373 0 Details
47 South African Junior Blitz 2018 (Open) Blitz 2018-12-19 2018-12-19 4 Knights (4K) 7 2248.2 7 5 2244.2 0 Details
48 Graham Solomon Memorial 2018 (Rapid) Rapid 2018-11-24 2018-11-24 Cape Town (WCT) 6 2260.8 6 3 2061.5 0 Details
49 Graham Solomon Memorial 2018 (Blitz) Blitz 2018-11-25 2018-11-25 Cape Town (WCT) 12 2260.8 12 7.5 2272.3 0 Details
50 43rd Olympiad Batumi 2018 Classical 2018-09-24 2018-10-05 Georgia (GEO) 11 2228.5 9 6.5 2419.8 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 11
Wins 2
Draws 5
Losses 4
White 6
Black 5
White wins 2
Black wins 0
Score 4.5
Percent 40.9
Dp -77.3
AOR 2272
Performance 2194.8
Game statistics (History)
Games 440
Wins 222
Draws 131
Losses 87
White 226
Black 214
White wins 121
Black wins 101
Score 287.5
Percent 65.3
Dp 130.4
AOR 2038.9
Performance 2169.3
Rankings (Main)
National
Overall 21
Gender 21
Age group 15
Gender/Age 15
Provincial
Overall 6
Gender 6
Age group 3
Gender/Age 3
Regional
Overall 6
Gender 6
Age group 3
Gender/Age 3
Rankings (Standard)
National
Overall 18
Gender 18
Age group 12
Gender/Age 12
Provincial
Overall 6
Gender 6
Age group 3
Gender/Age 3
Regional
Overall 6
Gender 6
Age group 3
Gender/Age 3
Rankings (Rapid)
National
Overall 8
Gender 8
Age group 6
Gender/Age 6
Provincial
Overall 4
Gender 4
Age group 2
Gender/Age 2
Regional
Overall 4
Gender 4
Age group 2
Gender/Age 2
Rankings (Blitz)
National
Overall -1
Gender -1
Age group -1
Gender/Age -1
Provincial
Overall -1
Gender -1
Age group -1
Gender/Age -1
Regional
Overall -1
Gender -1
Age group -1
Gender/Age -1
Performance ( )
Games 11
Score 4.5
Percent 40.9
Aor 2272
Dp -77.3
Prat 2194.8
Performance ()
Games 11
Score 4.5
Percent 40.9
Aor 2272
Dp -77.3
Prat 2194.8
Performance (12 months)
Games 40
Score 24
Percent 60
Aor 2108.3
Dp 85
Prat 2193.3
Performance (History)
Games 440
Score 287.5
Percent 65.3
Aor 2038.9
Dp 130.4
Prat 2169.3
Top 5 opponents most often played
Type # Opponent Games White Black First tournament Last tournament Details
Overall 1 Kobese, AKW (Watu) 22 12 10 2018 Capablanca RR (GM Norm) Cape Gambit Invitational 2025 Details
Overall 2 James, M (Michael) 12 6 6 WP Team Blitz 2018 (A) Nelson Mandela Rapid 2020 (Open) Details
Overall 3 Barrish, D (Daniel) 12 5 7 Graham Solomon Memorial 2018 (Blitz) 2026 South African Closed Chess Championships (Open) Details
Overall 4 Mnyasta, C (Charlton) 9 5 4 WP Open 2021 (Championship) 2026 South African Closed Chess Championships (Open) Details
Overall 5 Rogov, M (Matfey) 9 3 6 Cape Town Open 2023 (Championship) Cape Gambit Invitational 2025 Details
Standard 1 Kobese, AKW (Watu) 16 8 8 2018 Capablanca RR (GM Norm) Cape Gambit Invitational 2025 Details
Standard 2 Barrish, D (Daniel) 10 5 5 2019 Capablanca Chess Festival (RR IM Norm) 2026 South African Closed Chess Championships (Open) Details
Standard 3 Cawdery, DJ (Daniel John) 8 4 4 2018 Boardwalk Pearson Open (IM Norm) 2026 South African Closed Chess Championships (Open) Details
Standard 4 Rogov, M (Matfey) 8 2 6 Cape Town Open 2023 (Championship) Cape Gambit Invitational 2025 Details
Standard 5 Mnyasta, C (Charlton) 7 4 3 WP Open 2021 (Championship) 2026 South African Closed Chess Championships (Open) Details
Rapid 1 Kobese, AKW (Watu) 5 3 2 Eldo Smart Memorial Rapid Tournament 2018 Hermanus Chess Club Open 2025 (Championship) Details
Rapid 2 Erlank, WK (Warrick) 3 2 1 Graham Solomon Memorial 2018 (Rapid) DSK Chess Tournament 2019 (Open) Details
Rapid 3 James, M (Michael) 3 0 3 Graham Solomon Memorial 2018 (Rapid) Nelson Mandela Rapid 2020 (Open) Details
Rapid 4 Lynch, J (Justin) 2 1 1 Eldo Smart Memorial Rapid Tournament 2018 Nelson Mandela Rapid 2020 (Open) Details
Rapid 5 Willenberg, A (Athon) 2 2 0 Eldo Smart Memorial Rapid Tournament 2018 2019 Cape Town Classic Chess Festival (Rapid) Details
Blitz 1 De Villiers, CCA (Charles) 3 1 2 WP Team Blitz 2018 (A) 2019 Cape Town Classic Chess Festival (Blitz) Details
Blitz 2 James, M (Michael) 3 3 0 WP Team Blitz 2018 (A) 2019 Cape Town Classic Chess Festival (Blitz) Details
Blitz 3 Moche, J (Johannes) 2 1 1 South African Junior Blitz 2018 (Open) 2019 South African Juior Blitz Championship (A) Details
Blitz 4 Steel, HR (Henry Henry) 2 1 1 WP Team Blitz 2018 (A) Graham Solomon Memorial 2018 (Blitz) Details