Player Page

Kotze, CJ (Christiaan)
Dob: 2007/05/07 (U18)
Gender: Male
Chess SA id: 107052210
FIDE id: 14322587
Region: Mangaung (FMB)
Citizen: RSA
Title(s): CM
Last active: 2024/05/05 (7 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 rating1645.6
Curent Weighted rating1624.5
Curent Weighted performance1566.7
Current official/published rating (highest between Raw, WR and WP)1645.6
Current floor (min rating allowed)1145.6
Current highest rating achieved1645.6
Current K-factor28
Games played this month14
Score (S)5.5
Expected score (We)7.13
Difference (S-We)-1.63
Current Raw change (no limits, including tournament time weight)-43.2
Current min/max change allowed (with limits)±87.9
Current Raw change used (final)-43.2
Projected new Raw rating1602.4
Projected new Weighed rating1623.5
Projected new Weighted performance1566.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1623.5
Projected effective change (new Official - current Official)-22.1
Projected new highest rating1645.6
Projected new floor1145.6
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 rating1648.2
Curent Weighted rating1626.0
Curent Weighted performance1503.8
Current official/published rating (highest between Raw, WR and WP)1648.2
Current floor (min rating allowed)1148.2
Current highest rating achieved1648.2
Current K-factor28
Games played this month14
Score (S)5.5
Expected score (We)6.82
Difference (S-We)-1.32
Current Raw change (no limits, including tournament time weight)-37.0
Current min/max change allowed (with limits)±87.6
Current Raw change used (final)-37.0
Projected new Raw rating1611.2
Projected new Weighed rating1625.6
Projected new Weighted performance1503.8
Projected new official/published rating (highest between new Raw, new WR and new WP)1625.6
Projected effective change (new Official - current Official)-22.6
Projected new highest rating1648.2
Projected new floor1148.2
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 rating1583.3
Curent Weighted rating1478.2
Curent Weighted performance1549.2
Current official/published rating (highest between Raw, WR and WP)1583.3
Current floor (min rating allowed)1083.3
Current highest rating achieved1583.3
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)±96.0
Current Raw change used (final)0.0
Projected new Raw rating1583.3
Projected new Weighed rating1489.6
Projected new Weighted performance1549.2
Projected new official/published rating (highest between new Raw, new WR and new WP)1583.3
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1583.3
Projected new floor1083.3
Projected new K-facor32
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 rating1273.3
Curent Weighted rating1273.3
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1273.3
Current floor (min rating allowed)1083.3
Current highest rating achieved1325.0
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)±149.4
Current Raw change used (final)0.0
Projected new Raw rating1273.3
Projected new Weighed rating1273.3
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1273.3
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1325.0
Projected new floor1083.3
Projected new K-facor36
Tournaments
Tournament: Spartan Bishops Chess Championships 2024 (Rooks)
Start: 2024/05/04  End: 2024/05/05  Host: NBR  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 3.5
Main rating: 1645.6  Rating gain/loss: -12.1
Type rating: 1648.2  Rating gain/loss: -13.2
Analysis
Tournament: South African Junior Closed Chess Championship 2024 (U18 Open)
Start: 2024/04/27  End: 2024/05/01  Host: GE  Type: Standard   Time: 120  Time weight: 1.00  Rounds: 9
Games: 9  Score: 2.0
Main rating: 1645.6  Rating gain/loss: -31.1
Type rating: 1648.2  Rating gain/loss: -23.8
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
7 Spartan Bishops Chess Championships 2024 (Rooks) 2024/05/04 2024/05/05 Bojanala Platina (NBR) Standard 60 0.83 5 5 3.5 1645.6 1648.2 Analysis
6 South African Junior Closed Chess Championship 2024 (U18 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 2.0 1645.6 1648.2 Analysis
5 Bloemfontein Highschool League 2024 (U19A) 2024/03/08 2024/03/08 Mangaung (FMB) Rapid 15 0.39 5 4 4.0 1640.8 1571.1 Analysis
4 Grey College Team Championship 2024 (A) 2024/02/23 2024/02/24 Mangaung (FMB) Standard 60 0.83 5 5 4.0 1618.2 1635.3 Analysis
3 Bloemfontein High School League 16 February 2024 (U19A+U19B) 2024/02/16 2024/02/16 Mangaung (FMB) Rapid 15 0.39 5 5 4.5 1618.2 1532.7 Analysis
2 Mangaung Metro Chess 10 February 2024 (A) 2024/02/10 2024/02/10 Mangaung (FMB) Rapid 32 0.63 5 5 2.5 1618.2 1532.7 Analysis
1 Kings & Queens Chess 27 January 2024 (A) 2024/01/27 2024/01/27 Mangaung (FMB) Rapid 32 0.63 5 5 3.5 1626.8 1547.8 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
38 Spartan Bishops Chess Championships 2024 (Rooks) 2024/05/04 2024/05/05 Bojanala Platina (NBR) Standard 60 0.83 5 5 3.5 1645.6 1648.2 Analysis
37 South African Junior Closed Chess Championship 2024 (U18 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 2.0 1645.6 1648.2 Analysis
36 Bloemfontein Highschool League 2024 (U19A) 2024/03/08 2024/03/08 Mangaung (FMB) Rapid 15 0.39 5 4 4.0 1640.8 1571.1 Analysis
35 Grey College Team Championship 2024 (A) 2024/02/23 2024/02/24 Mangaung (FMB) Standard 60 0.83 5 5 4.0 1618.2 1635.3 Analysis
34 Bloemfontein High School League 16 February 2024 (U19A+U19B) 2024/02/16 2024/02/16 Mangaung (FMB) Rapid 15 0.39 5 5 4.5 1618.2 1532.7 Analysis
33 Mangaung Metro Chess 10 February 2024 (A) 2024/02/10 2024/02/10 Mangaung (FMB) Rapid 32 0.63 5 5 2.5 1618.2 1532.7 Analysis
32 Kings & Queens Chess 27 January 2024 (A) 2024/01/27 2024/01/27 Mangaung (FMB) Rapid 32 0.63 5 5 3.5 1626.8 1547.8 Analysis
31 Bloemfontein HS League 27 October 2023 (U19) 2023/10/27 2023/10/27 Cape Winelands (WCW) Rapid 15 0.39 5 5 4.5 1617.4 1426.5 Analysis
30 Bloemfontein HS League 13 October 2023 (U17+U19) 2023/10/13 2023/10/13 Mangaung (FMB) Rapid 20 0.47 5 5 5.0 1617.4 1426.5 Analysis
29 Morris Club Championship 2023 2023/07/28 2023/07/28 Mangaung (FMB) Rapid 32 0.63 5 5 3.0 1628.2 1411.1 Analysis
28 9th Piet van Zyl Chess Festival 2023 (A) 2023/05/26 2023/05/27 Mangaung (FMB) Standard 90 0.94 5 5 3.0 1626.4 1617.2 Analysis
27 Inter Regional Chess Championship 2023 (U18) 2023/05/19 2023/05/20 Mangaung (FMB) Standard 62 0.84 5 5 4.0 1626.4 1617.2 Analysis
26 Bloemfontein Highschool League 24 Feb 2023 (U19A) 2023/02/24 2023/02/24 Mangaung (FMB) Rapid 17 0.42 5 5 5.0 1599.0 1378.0 Analysis
25 Grey College Team Championship 2023 (A) 2023/02/03 2023/02/04 Mangaung (FMB) Standard 60 0.83 5 5 4.5 1599.0 1601.5 Analysis
24 2022 South African Junior Team Chess Championships (U18 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 4.0 1584.0 1588.4 Analysis
23 Bloemfontein School League 2022 (U19) 2022/08/12 2022/08/12 Mangaung (FMB) Rapid 35 0.66 5 5 4.0 1596.9 1382.7 Analysis
22 Mangaung Metro Chess 30 July 2022 (A) 2022/07/30 2022/07/30 Mangaung (FMB) Rapid 32 0.63 5 5 5.0 1576.1 1337.7 Analysis
21 Bloemfontein Schools League 2022 (U19+Open) 2022/02/25 2022/02/25 Mangaung (FMB) Rapid 22 0.50 5 5 5.0 1537.5 1302.8 Analysis
20 Grey College Team Championship 2022 (A) 2022/02/18 2022/02/19 Mangaung (FMB) Standard 60 0.83 5 5 5.0 1537.5 1556.7 Analysis
19 Mangaung Metro Chess 22 January 2022 (A) 2022/01/22 2022/01/22 Mangaung (FMB) Rapid 32 0.63 5 5 4.5 1512.1 1257.8 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 38 19 10 9 24.0 63.2 111.8 1496.4 1608.2
White 18 8 4 6 10.0 55.6 47.2 1562.1 1609.3
Black 20 11 6 3 14.0 70.0 170.0 1437.3 1607.3
Standard All 19 6 7 6 9.5 50.0 0.0 1582.3 1582.3
White 10 4 3 3 5.5 55.0 42.5 1590.6 1633.1
Black 9 2 4 3 4.0 44.4 -47.2 1573.1 1525.9
Rapid All 19 13 3 3 14.5 76.3 223.7 1410.4 1634.1
White 8 4 1 3 4.5 56.3 53.1 1526.4 1579.5
Black 11 9 2 0 10.0 90.9 347.7 1326.1 1673.8
Blitz 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
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 198 117 40 41 137.0 69.2 163.1 1363.5 1526.6
White 98 59 20 19 69.0 70.4 173.5 1364.5 1537.9
Black 100 58 20 22 68.0 68.0 153.0 1362.5 1515.5
Standard All 133 66 34 33 83.0 62.4 105.5 1380.4 1485.9
White 68 37 17 14 45.5 66.9 143.7 1371.8 1515.5
Black 65 29 17 19 37.5 57.7 65.4 1389.5 1454.9
Rapid All 59 48 5 6 50.5 85.6 302.5 1321.2 1623.7
White 27 20 3 4 21.5 79.6 251.9 1357.0 1608.9
Black 32 28 2 2 29.0 90.6 345.3 1290.9 1636.2
Blitz All 6 3 1 2 3.5 58.3 70.8 1402.8 1473.7
White 3 2 0 1 2.0 66.7 141.7 1266.0 1407.6
Black 3 1 1 1 1.5 50.0 0.0 1539.7 1539.7
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 171017444 Lebenya, MJ (Masilonyana) 6 5.5 5 1 0 91.7 1412.6 354.2 1766.8 View list
2 108086187 Rossouw, J (Johrne) 4 3.5 3 1 0 87.5 1591.3 318.8 1910.0 View list
3 107076014 Van Rooyen, H (Hanro) 4 3.5 3 1 0 87.5 1457.7 318.8 1776.5 View list
4 104030572 Posholi, K (Kamohelo) 4 0.5 0 1 3 12.5 1395.2 -318.8 1076.4 View list
5 202026287 Mutambala, B (Baraka) 3 3.0 3 0 0 100.0 1408.5 425.0 1833.5 View list
6 1900111822 Peters, V (Vaughan) 3 3.0 3 0 0 100.0 1449.3 425.0 1874.3 View list
7 1070143843 Badenhorst, M (Matthew Peter) 3 2.5 2 1 0 83.3 1617.7 283.3 1901.0 View list
8 102023635 Modirwa, O (Ofentse) 3 1.5 0 3 0 50.0 1436.2 0.0 1436.2 View list
9 101030919 Pretorius, M (Marco) 3 1.0 1 0 2 33.3 1276.6 -141.7 1135.0 View list
10 194020362 Manaba, T (Thembani) 3 1.0 0 2 1 33.3 1468.1 -141.7 1326.4 View list
11 101025290 Motaung, L (Lehlohonolo) 3 1.0 0 2 1 33.3 1390.4 -141.7 1248.7 View list
12 197000143 Acho, CT (Christiaan) 3 0.0 0 0 3 0.0 1410.7 -425.0 985.7 View list
13 181002839 Botes, D (Dion) 2 2.0 2 0 0 100.0 1458.3 425.0 1883.3 View list
14 102053241 Buchner, E (Eduard) 2 2.0 2 0 0 100.0 1431.0 425.0 1856.0 View list
15 1060107761 Fumba, I (Immanuel) 2 2.0 2 0 0 100.0 1619.9 425.0 2044.9 View list
16 1060191972 Goosen, C (Chris) 2 2.0 2 0 0 100.0 1629.5 425.0 2054.5 View list
17 107069734 Jordaan, W (Wian) 2 2.0 2 0 0 100.0 1582.2 425.0 2007.2 View list
18 1060111831 Mitchell, V (Vanadium) 2 2.0 2 0 0 100.0 1567.2 425.0 1992.2 View list
19 106053115 Moolman, A (Arno) 2 2.0 2 0 0 100.0 1629.5 425.0 2054.5 View list
20 101084890 Nophale, N (Ntokozo) 2 2.0 2 0 0 100.0 1416.9 425.0 1841.9 View list