Player Page

Buhrmann, J (Johann)
Dob: 2006/09/21 (U20)
Gender: Male
Chess SA id: 106056845
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/08/17 (49 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 rating1423.6
Current Weighted rating1479.5
Current Weighted performance1167.4
Current official/published rating (highest between Raw, WR and WP)1479.5
Current highest rating achieved1533.0
Current floor (min rating allowed)1033.0
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)±120.6
Current Raw change used (final)0.0
Projected new Raw rating1423.6
Projected new Weighed rating1362.4
Projected new Weighted performance1167.4
Projected new final Raw rating (if new WP > new Raw)1423.6
Projected new highest rating1533.0
Projected new floor1033.0
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1423.6
Projected effective change (new Official - current Official)-55.9
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 rating1429.2
Current Weighted rating1496.2
Current Weighted performance1226.1
Current official/published rating (highest between Raw, WR and WP)1496.2
Current highest rating achieved1526.2
Current floor (min rating allowed)1026.2
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)±119.6
Current Raw change used (final)0.0
Projected new Raw rating1429.2
Projected new Weighed rating1378.1
Projected new Weighted performance1226.1
Projected new final Raw rating (if new WP > new Raw)1429.2
Projected new highest rating1526.2
Projected new floor1026.2
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1429.2
Projected effective change (new Official - current Official)-67.0
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 rating982.4
Current Weighted rating854.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)982.4
Current highest rating achieved982.4
Current floor (min rating allowed)500.0
Current K-factor40
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)±226.1
Current Raw change used (final)0.0
Projected new Raw rating982.4
Projected new Weighed rating795.0
Projected new Weighted performance808.3
Projected new final Raw rating (if new WP > new Raw)982.4
Projected new highest rating982.4
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)982.4
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 rating599.2
Current Weighted rating598.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)599.2
Current highest rating achieved599.2
Current floor (min rating allowed)500.0
Current K-factor40
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)±390.3
Current Raw change used (final)0.0
Projected new Raw rating599.2
Projected new Weighed rating551.3
Projected new Weighted performance365.3
Projected new final Raw rating (if new WP > new Raw)599.2
Projected new highest rating599.2
Projected new floor500.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)599.2
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
2 Gauteng Schools Individuals Finals 2024 (U18 Boys) 2024/08/17 2024/08/17 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1480.4 1502.2 Analysis
1 2024 Gauteng Inter-Region Chess Championship (U18A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 2.5 1500.3 1525.2 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
29 Gauteng Schools Individuals Finals 2024 (U18 Boys) 2024/08/17 2024/08/17 Ekurhuleni (GE) Standard 60 0.83 5 5 2.0 1480.4 1502.2 Analysis
28 2024 Gauteng Inter-Region Chess Championship (U18A) 2024/01/13 2024/01/14 Tshwane (GTP) Standard 90 0.94 5 5 2.5 1500.3 1525.2 Analysis
27 Mzansi Bryanston Rapid 2023 (Advanced) 2023/10/07 2023/10/07 Johannesburg Metro (GJM) Rapid 25 0.54 5 5 2.0 1506.7 650.0 Analysis
26 Mzansi Spring Rapid 2023 2023/09/02 2023/09/02 Johannesburg Metro (GJM) Rapid 15 0.39 7 7 3.0 1533.0 533.2 Analysis
25 2023 Gauteng Top Schools (U17 Mixed) 2023/08/19 2023/08/19 West Rand (GWR) Standard 60 0.83 5 5 3.0 1529.8 1526.2 Analysis
24 JMC Closed Aug 2023 (U18+U20) 2023/08/04 2023/08/06 Johannesburg Metro (GJM) Standard 90 0.94 6 6 4.0 1529.8 1526.2 Analysis
23 JNW Open - Trinityhouse Little Falls 2023 (B) 2023/06/24 2023/06/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1508.9 1505.0 Analysis
22 JNW Open - Trinityhouse Little Falls 2023 (B) 2023/05/13 2023/05/13 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1432.4 1435.8 Analysis
21 2023 South African Junior Closed Chess Championships (U18 Open) 2023/03/31 2023/04/04 Chess South Africa (CSA) Standard 120 1.00 9 8 2.5 1412.7 1422.9 Analysis
20 JMC 1 St Peters 2023 (B) 2023/03/18 2023/03/18 Johannesburg Metro (GJM) Standard 60 0.83 5 5 4.0 1366.4 1367.5 Analysis
19 2022 South African Junior Wild Card Chess Championships (U18+U20 Open) 2022/12/09 2022/12/12 4 Knights (4K) Standard 120 1.00 7 6 2.5 1290.6 1300.5 Analysis
18 2022 South Africa Junior Blitz Chess Championships (U16+U18) 2022/12/05 2022/12/05 4 Knights (4K) Blitz 5 0.18 7 6 2.5 1290.6 500.0 Analysis
17 2022 South African Junior Team Chess Championships (U18 Open) 2022/12/04 2022/12/08 4 Knights (4K) Standard 120 1.00 7 7 4.5 1290.6 1300.5 Analysis
16 2022 Gauteng Schools Individual Chess Championship (U18 Boys) 2022/06/18 2022/06/18 Ekurhuleni (GE) Standard 60 0.83 5 5 2.5 1289.1 1301.2 Analysis
15 2022 Gauteng Interregion (U16 Open) 2022/02/26 2022/02/26 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1256.0 1271.1 Analysis
14 JMC @ Pinnacle 2022 (B) 2022/02/19 2022/02/20 Johannesburg Metro (GJM) Standard 90 0.94 5 5 2.0 1256.0 1271.1 Analysis
13 JMC Bryanston 2021 (C) 2021/11/06 2021/11/06 Johannesburg Metro (GJM) Standard 60 0.83 5 5 5.0 1160.4 1159.5 Analysis
12 JMC Everest 2021 (C) 2021/10/30 2021/10/30 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1183.0 1191.9 Analysis
11 JNW Club - Junior A High School 2020 2020/03/07 2020/03/07 Johannesburg Metro (GJM) Rapid 30 0.60 5 5 1.0 1195.5 500.0 Analysis
10 2019 South African Junior Team Championships (U14D) 2020/01/04 2020/01/08 4 Knights (4K) Standard 120 1.00 7 7 6.0 1074.7 1075.5 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 10 4 1 5 4.5 45.0 -42.5 1299.5 1257.0
White 6 1 1 4 1.5 25.0 -212.5 1329.1 1116.6
Black 4 3 0 1 3.0 75.0 212.5 1255.3 1467.8
Standard All 10 4 1 5 4.5 45.0 -42.5 1299.5 1257.0
White 6 1 1 4 1.5 25.0 -212.5 1329.1 1116.6
Black 4 3 0 1 3.0 75.0 212.5 1255.3 1467.8
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 156 76 9 71 80.5 51.6 13.6 1303.5 1317.1
White 80 45 5 30 47.5 59.4 79.7 1289.1 1368.8
Black 76 31 4 41 33.0 43.4 -55.9 1318.7 1262.8
Standard All 133 68 8 57 72.0 54.1 35.2 1282.5 1317.6
White 70 41 5 24 43.5 62.1 103.2 1276.9 1380.1
Black 63 27 3 33 28.5 45.2 -40.5 1288.7 1248.2
Rapid All 17 6 0 11 6.0 35.3 -125.0 1401.4 1276.4
White 8 2 0 6 2.0 25.0 -212.5 1406.0 1193.5
Black 9 4 0 5 4.0 44.4 -47.2 1397.2 1350.0
Blitz All 6 2 1 3 2.5 41.7 -70.8 1492.9 1422.1
White 2 2 0 0 2.0 100.0 425.0 1248.6 1673.6
Black 4 0 1 3 0.5 12.5 -318.8 1615.1 1296.3
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 111092701 Deysel, K (Kaleb) 3 0.0 0 0 3 0.0 942.7 -425.0 517.7 View list
2 107069948 Jones, W (William) 3 0.0 0 0 3 0.0 1130.1 -425.0 705.1 View list
3 1100111138 Akker, D (Dylan) 2 2.0 2 0 0 100.0 1334.7 425.0 1759.7 View list
4 111092267 D`Alton, E (Ezra) 2 2.0 2 0 0 100.0 1073.1 425.0 1498.1 View list
5 2070100307 Pretorius, K (Klarissa) 2 2.0 2 0 0 100.0 1356.4 425.0 1781.4 View list
6 1120135549 Segal, J (Jamie) 2 2.0 2 0 0 100.0 1344.2 425.0 1769.2 View list
7 2120109902 Suresh, A (Aaradhya) 2 2.0 2 0 0 100.0 1311.2 425.0 1736.2 View list
8 105058535 Liao, J (Jingpu) 2 1.5 1 1 0 75.0 1351.7 212.5 1564.2 View list
9 106050532 Delport, B (Ben) 2 1.0 1 0 1 50.0 1351.7 0.0 1351.7 View list
10 1110097852 Bezuidenhout, D (Dawid) 2 1.0 1 0 1 50.0 1153.6 0.0 1153.6 View list
11 107088030 Lusi, L (Lunathi) 2 1.0 1 0 1 50.0 1504.6 0.0 1504.6 View list
12 1100110071 Poongavanum, K (Kalyan) 2 1.0 1 0 1 50.0 786.0 0.0 786.0 View list
13 106050282 Voigt, H (Heinrich) 2 1.0 1 0 1 50.0 1529.8 0.0 1529.8 View list
14 106065267 Becker, M (Matthew) 2 0.5 0 1 1 25.0 1290.6 -212.5 1078.1 View list
15 107090302 Setshedi, N (Neo) 2 0.5 0 1 1 25.0 1378.2 -212.5 1165.7 View list
16 208073206 Fauconier, A (Amber) 2 0.0 0 0 2 0.0 687.4 -425.0 262.4 View list
17 1070119419 Shatlin, D (Damien) 2 0.0 0 0 2 0.0 1164.0 -425.0 739.0 View list
18 1060104959 Stadler, H (Helgard) 2 0.0 0 0 2 0.0 1351.7 -425.0 926.7 View list
19 1120115958 Bazhko, A (Anton) 1 1.0 1 0 0 100.0 1508.9 425.0 1933.9 View list
20 2070096337 Babusi, B (Rebaone) 1 1.0 1 0 0 100.0 1074.7 425.0 1499.7 View list