Player Page

Botha, JCC (Johannes Christiaan Corneli)
Dob: 2011/12/21 (U14)
Gender: Male
Chess SA id: 1110118128
FIDE id:
Region: Ekurhuleni (GE)
Citizen: RSA
Title(s):
Last active: 2024/05/04 (15 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 rating1564.1
Curent Weighted rating1566.7
Curent Weighted performance1484.3
Current official/published rating (highest between Raw, WR and WP)1566.7
Current floor (min rating allowed)1162.7
Current highest rating achieved1662.7
Current K-factor28
Games played this month14
Score (S)4.5
Expected score (We)8.14
Difference (S-We)-3.64
Current Raw change (no limits, including tournament time weight)-96.8
Current min/max change allowed (with limits)±98.7
Current Raw change used (final)-96.8
Projected new Raw rating1467.3
Projected new Weighed rating1558.6
Projected new Weighted performance1484.3
Projected new official/published rating (highest between new Raw, new WR and new WP)1558.6
Projected effective change (new Official - current Official)-8.1
Projected new highest rating1662.7
Projected new floor1162.7
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 rating1556.4
Curent Weighted rating1561.8
Curent Weighted performance1478.7
Current official/published rating (highest between Raw, WR and WP)1561.8
Current floor (min rating allowed)1162.5
Current highest rating achieved1662.5
Current K-factor28
Games played this month14
Score (S)4.5
Expected score (We)8.37
Difference (S-We)-3.87
Current Raw change (no limits, including tournament time weight)-108.4
Current min/max change allowed (with limits)±99.8
Current Raw change used (final)-99.8
Projected new Raw rating1456.6
Projected new Weighed rating1553.2
Projected new Weighted performance1478.7
Projected new official/published rating (highest between new Raw, new WR and new WP)1553.2
Projected effective change (new Official - current Official)-8.6
Projected new highest rating1662.5
Projected new floor1162.5
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 rating1255.6
Curent Weighted rating1253.7
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1255.6
Current floor (min rating allowed)755.6
Current highest rating achieved1255.6
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)±153.2
Current Raw change used (final)0.0
Projected new Raw rating1255.6
Projected new Weighed rating1254.5
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1255.6
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1255.6
Projected new floor755.6
Projected new K-facor36
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 rating1200.0
Curent Weighted rating1200.0
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1200.0
Current floor (min rating allowed)755.6
Current highest rating achieved1200.0
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)±165.8
Current Raw change used (final)0.0
Projected new Raw rating1200.0
Projected new Weighed rating1200.0
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)1200.0
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1200.0
Projected new floor755.6
Projected new K-facor36
Tournaments
Tournament: JMC Helpmekaar Kollege Tournament 2024 (B)
Start: 2024/05/04  End: 2024/05/04  Host: GJM  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 5
Games: 5  Score: 2.5
Main rating: 1564.1  Rating gain/loss: -24.9
Type rating: 1556.4  Rating gain/loss: -35.8
Analysis
Tournament: South African Junior Closed Chess Championship 2024 (U14 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: 1564.1  Rating gain/loss: -72.0
Type rating: 1556.4  Rating gain/loss: -72.5
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
7 JMC Helpmekaar Kollege Tournament 2024 (B) 2024/05/04 2024/05/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1564.1 1556.4 Analysis
6 South African Junior Closed Chess Championship 2024 (U14 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 2.0 1564.1 1556.4 Analysis
5 Westwood Open 2024 (A) 2024/04/13 2024/04/13 Ekurhuleni (GE) Standard 60 0.83 5 4 3.0 1572.5 1568.2 Analysis
4 JNW Open - Classic - Crawford 2024 (B) 2024/03/09 2024/03/09 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1564.8 1558.4 Analysis
3 2024 Constantiapark Open (B) 2024/02/17 2024/02/17 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1576.7 1574.9 Analysis
2 JMC Kick Off Tournament 2024 (B) 2024/01/28 2024/01/28 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1581.5 1578.8 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U14A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 3.0 1581.5 1578.8 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
39 JMC Helpmekaar Kollege Tournament 2024 (B) 2024/05/04 2024/05/04 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1564.1 1556.4 Analysis
38 South African Junior Closed Chess Championship 2024 (U14 Open) 2024/04/27 2024/05/01 Ekurhuleni (GE) Standard 120 1.00 9 9 2.0 1564.1 1556.4 Analysis
37 Westwood Open 2024 (A) 2024/04/13 2024/04/13 Ekurhuleni (GE) Standard 60 0.83 5 4 3.0 1572.5 1568.2 Analysis
36 JNW Open - Classic - Crawford 2024 (B) 2024/03/09 2024/03/09 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1564.8 1558.4 Analysis
35 2024 Constantiapark Open (B) 2024/02/17 2024/02/17 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1576.7 1574.9 Analysis
34 JMC Kick Off Tournament 2024 (B) 2024/01/28 2024/01/28 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1581.5 1578.8 Analysis
33 2024 Gauteng Inter-Region Chess Championship (U14A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 3.0 1581.5 1578.8 Analysis
32 2023 Gauteng Top Schools (U13 Mixed) 2023/08/18 2023/08/18 West Rand (GWR) Standard 60 0.83 5 5 5.0 1530.3 1525.8 Analysis
31 2023 Ekurhuleni North District Schools Finals (U13) 2023/07/29 2023/07/29 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1516.6 1507.6 Analysis
30 Gauteng Schools Individual Finals 2023 (U13 Boys) 2023/05/26 2023/05/26 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1534.0 1518.5 Analysis
29 Gauteng Open Arnold Classic 2023 (Open) 2023/05/20 2023/05/21 Tshwane (GTP) Standard 90 0.94 5 4 0.0 1534.0 1518.5 Analysis
28 Ekurhuleni North Schools Individual Finals 2023 (U13 Boys) 2023/05/12 2023/05/12 Ekurhuleni (GE) Standard 60 0.83 5 5 5.0 1534.0 1518.5 Analysis
27 Ekurhuleni Trials 2 2023 (U14) 2023/04/22 2023/04/22 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1569.9 1562.7 Analysis
26 Alberton Chess Club Tournament 1 2023 (B) 2023/04/15 2023/04/15 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1569.9 1562.7 Analysis
25 2023 South African Junior Closed Chess Championships (U12 Open) 2023/03/31 2023/04/04 Chess South Africa (CSA) Standard 120 1.00 9 9 5.0 1569.9 1562.7 Analysis
24 Ekhuruleni Chess Trials 1 2023 (U14) 2023/03/25 2023/03/25 Ekurhuleni (GE) Standard 60 0.83 5 5 4.0 1579.4 1575.0 Analysis
23 2022 South African Junior Team Chess Championships (U12 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 6.0 1558.1 1554.0 Analysis
22 Super 8 Skaak 2022 (Seniors) 2022/10/14 2022/10/14 Bojanala Platina (NBR) Rapid 30 0.60 7 6 5.0 1555.0 1200.0 Analysis
21 ACB Tournament 2022 (A) 2022/10/07 2022/10/08 Ekurhuleni (GE) Standard 90 0.94 5 5 3.0 1555.0 1545.3 Analysis
20 Ekurhuleni Chess Springs Club Open 2022 (C) 2022/09/03 2022/09/03 Ekurhuleni (GE) Standard 60 0.83 5 5 3.0 1575.7 1572.2 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 38 17 5 16 19.5 51.3 11.2 1456.1 1467.3
White 20 10 3 7 11.5 57.5 63.7 1429.0 1492.7
Black 18 7 2 9 8.0 44.4 -47.2 1486.2 1439.0
Standard All 38 17 5 16 19.5 51.3 11.2 1456.1 1467.3
White 20 10 3 7 11.5 57.5 63.7 1429.0 1492.7
Black 18 7 2 9 8.0 44.4 -47.2 1486.2 1439.0
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 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 210 138 9 63 142.5 67.9 151.8 1330.5 1482.3
White 106 71 5 30 73.5 69.3 164.4 1317.4 1481.8
Black 104 67 4 33 69.0 66.3 138.9 1343.9 1482.8
Standard All 204 133 9 62 137.5 67.4 147.9 1333.2 1481.1
White 103 68 5 30 70.5 68.4 156.8 1319.7 1476.5
Black 101 65 4 32 67.0 66.3 138.9 1347.0 1485.8
Rapid All 6 5 0 1 5.0 83.3 283.3 1239.0 1522.4
White 3 3 0 0 3.0 100.0 425.0 1238.9 1663.9
Black 3 2 0 1 2.0 66.7 141.7 1239.2 1380.9
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1110103524 Kotzee, A (Armand) 4 3.0 3 0 1 75.0 1558.4 212.5 1770.9 View list
2 2110151735 Ambrose, I (Isabella) 3 3.0 3 0 0 100.0 1542.1 425.0 1967.1 View list
3 210088032 De Vasconcelos, T (Tiaana) 3 3.0 3 0 0 100.0 1449.0 425.0 1874.0 View list
4 1110118124 Pieterse, JF (Jurgens Francois) 3 3.0 3 0 0 100.0 1356.7 425.0 1781.7 View list
5 1110097360 Pillay, Z (Zac) 3 3.0 3 0 0 100.0 1490.9 425.0 1915.9 View list
6 1100116478 Smith, H (Henre) 3 3.0 3 0 0 100.0 1433.9 425.0 1858.9 View list
7 1110109195 Tema, O (Ofana) 3 1.5 1 1 1 50.0 1522.6 0.0 1522.6 View list
8 1120096779 Yang, JD (Daniel) 3 1.5 1 1 1 50.0 1574.5 0.0 1574.5 View list
9 111009119 Esterhuizen, JL (Janco) 2 2.0 2 0 0 100.0 1531.7 425.0 1956.7 View list
10 1110097689 Froom, J (Jacob) 2 2.0 2 0 0 100.0 1496.1 425.0 1921.1 View list
11 2100107820 Labuschagne, M (Melindie) 2 2.0 2 0 0 100.0 1389.1 425.0 1814.1 View list
12 1110139528 Robinson, E (Ethan) 2 2.0 2 0 0 100.0 1484.8 425.0 1909.8 View list
13 1110103928 Slabbert, ZN (Zander Nicolaas) 2 2.0 2 0 0 100.0 1496.1 425.0 1921.1 View list
14 1090118195 Strydom, L (Leyan) 2 2.0 2 0 0 100.0 1597.8 425.0 2022.8 View list
15 1120108381 Van Der Merwe, M (Marthinus) 2 2.0 2 0 0 100.0 1556.5 425.0 1981.5 View list
16 1110135703 Bain, M (Michael) 2 1.5 1 1 0 75.0 1553.5 212.5 1766.0 View list
17 1110131971 Chipunza, J (Jared) 2 1.0 1 0 1 50.0 1567.0 0.0 1567.0 View list
18 111092701 Deysel, K (Kaleb) 2 1.0 1 0 1 50.0 1542.5 0.0 1542.5 View list
19 1110100045 Gondwe, P (Prosper) 2 1.0 1 0 1 50.0 1493.2 0.0 1493.2 View list
20 2110111566 Hingorani, R (Ridhima) 2 1.0 1 0 1 50.0 1546.8 0.0 1546.8 View list