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: 2024/08/02 (111 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 rating1612.9
Current Weighted rating1620.2
Current Weighted performance1496.9
Current official/published rating (highest between Raw, WR and WP)1620.2
Current highest rating achieved1645.6
Current floor (min rating allowed)1145.6
Current K-factor28
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)±92.1
Current Raw change used (final)0.0
Projected new Raw rating1612.9
Projected new Weighed rating1490.5
Projected new Weighted performance1496.9
Projected new final Raw rating (if new WP > new Raw)1612.9
Projected new highest rating1645.6
Projected new floor1145.6
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1612.9
Projected effective change (new Official - current Official)-7.3
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 rating1611.2
Current Weighted rating1622.7
Current Weighted performance1432.5
Current official/published rating (highest between Raw, WR and WP)1622.7
Current highest rating achieved1648.2
Current floor (min rating allowed)1148.2
Current K-factor28
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)±92.3
Current Raw change used (final)0.0
Projected new Raw rating1611.2
Projected new Weighed rating1493.0
Projected new Weighted performance1432.5
Projected new final Raw rating (if new WP > new Raw)1611.2
Projected new highest rating1648.2
Projected new floor1148.2
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1611.2
Projected effective change (new Official - current Official)-11.5
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 rating1603.1
Current Weighted rating1540.2
Current Weighted performance1562.3
Current official/published rating (highest between Raw, WR and WP)1603.1
Current highest rating achieved1603.1
Current floor (min rating allowed)1103.1
Current K-factor28
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)±93.4
Current Raw change used (final)0.0
Projected new Raw rating1603.1
Projected new Weighed rating1420.5
Projected new Weighted performance1562.3
Projected new final Raw rating (if new WP > new Raw)1603.1
Projected new highest rating1603.1
Projected new floor1103.1
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1603.1
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 rating1273.3
Current Weighted rating1273.3
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1273.3
Current highest rating achieved1325.0
Current floor (min rating allowed)825.0
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 rating1171.4
Projected new Weighted performance200.7
Projected new final Raw rating (if new WP > new Raw)1273.3
Projected new highest rating1325.0
Projected new floor825.0
Projected new K-facor36
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
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
8 Bloemfontein Highschool League 02 Aug 2024 (U19A) 2024/08/02 2024/08/02 Mangaung (FMB) Rapid 15 0.39 5 5 5.0 1602.4 1583.3 Analysis
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
39 Bloemfontein Highschool League 02 Aug 2024 (U19A) 2024/08/02 2024/08/02 Mangaung (FMB) Rapid 15 0.39 5 5 5.0 1602.4 1583.3 Analysis
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
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 43 24 10 9 29.0 67.4 148.3 1477.0 1625.2
White 20 10 4 6 12.0 60.0 85.0 1542.1 1627.1
Black 23 14 6 3 17.0 73.9 203.3 1420.3 1623.6
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 24 18 3 3 19.5 81.3 265.6 1393.6 1659.2
White 10 6 1 3 6.5 65.0 127.5 1493.7 1621.2
Black 14 12 2 0 13.0 92.9 364.3 1322.1 1686.4
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 203 122 40 41 142.0 70.0 169.6 1362.6 1532.2
White 100 61 20 19 71.0 71.0 178.5 1364.4 1542.9
Black 103 61 20 22 71.0 68.9 160.9 1360.9 1521.8
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 64 53 5 6 55.5 86.7 312.1 1321.8 1633.9
White 29 22 3 4 23.5 81.0 263.8 1357.4 1621.2
Black 35 31 2 2 32.0 91.4 352.1 1292.3 1644.4
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 1776.4 View list
4 104030572 Posholi, K (Kamohelo) 4 0.5 0 1 3 12.5 1395.1 -318.8 1076.4 View list
5 1060107761 Fumba, I (Immanuel) 3 3.0 3 0 0 100.0 1614.1 425.0 2039.1 View list
6 106053115 Moolman, A (Arno) 3 3.0 3 0 0 100.0 1620.5 425.0 2045.5 View list
7 202026287 Mutambala, B (Baraka) 3 3.0 3 0 0 100.0 1408.5 425.0 1833.5 View list
8 1900111822 Peters, V (Vaughan) 3 3.0 3 0 0 100.0 1449.3 425.0 1874.3 View list
9 1070143843 Badenhorst, M (Matthew Peter) 3 2.5 2 1 0 83.3 1617.7 283.3 1901.0 View list
10 102023635 Modirwa, O (Ofentse) 3 1.5 0 3 0 50.0 1436.2 0.0 1436.2 View list
11 101030919 Pretorius, M (Marco) 3 1.0 1 0 2 33.3 1276.6 -141.7 1135.0 View list
12 194020362 Manaba, T (Thembani) 3 1.0 0 2 1 33.3 1468.1 -141.7 1326.4 View list
13 101025290 Motaung, L (Lehlohonolo) 3 1.0 0 2 1 33.3 1390.4 -141.7 1248.7 View list
14 197000143 Acho, CT (Christiaan) 3 0.0 0 0 3 0.0 1410.7 -425.0 985.7 View list
15 181002839 Botes, D (Dion) 2 2.0 2 0 0 100.0 1458.3 425.0 1883.3 View list
16 102053241 Buchner, E (Eduard) 2 2.0 2 0 0 100.0 1431.0 425.0 1856.0 View list
17 1060191972 Goosen, C (Chris) 2 2.0 2 0 0 100.0 1629.5 425.0 2054.5 View list
18 107069734 Jordaan, W (Wian) 2 2.0 2 0 0 100.0 1582.2 425.0 2007.2 View list
19 1060111831 Mitchell, V (Vanadium) 2 2.0 2 0 0 100.0 1567.2 425.0 1992.2 View list
20 101084890 Nophale, N (Ntokozo) 2 2.0 2 0 0 100.0 1416.9 425.0 1841.9 View list