Player Page

Mendelsohn, DC (David)
Dob: 1955/10/05 (Adult)
Gender: Male
Chess SA id: 155022650
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2024/05/21 (31 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 rating1641.4
Current Weighted rating1638.6
Current Weighted performance1525.1
Current official/published rating (highest between Raw, WR and WP)1641.4
Current highest rating achieved1879.0
Current floor (min rating allowed)1379.0
Current K-factor24
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)±88.4
Current Raw change used (final)0.0
Projected new Raw rating1641.4
Projected new Weighed rating1507.7
Projected new Weighted performance1525.1
Projected new final Raw rating (if new WP > new Raw)1641.4
Projected new highest rating1879.0
Projected new floor1379.0
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1641.4
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 rating1624.4
Current Weighted rating1631.1
Current Weighted performance1525.1
Current official/published rating (highest between Raw, WR and WP)1631.1
Current highest rating achieved1879.0
Current floor (min rating allowed)1379.0
Current K-factor24
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)±90.6
Current Raw change used (final)0.0
Projected new Raw rating1624.4
Projected new Weighed rating1500.7
Projected new Weighted performance1525.1
Projected new final Raw rating (if new WP > new Raw)1624.4
Projected new highest rating1879.0
Projected new floor1379.0
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1624.4
Projected effective change (new Official - current Official)-6.7
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 rating1810.3
Current Weighted rating1809.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1810.3
Current highest rating achieved1879.0
Current floor (min rating allowed)1379.0
Current K-factor24
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)±69.5
Current Raw change used (final)0.0
Projected new Raw rating1810.3
Projected new Weighed rating1665.1
Projected new Weighted performance122.5
Projected new final Raw rating (if new WP > new Raw)1810.3
Projected new highest rating1879.0
Projected new floor1379.0
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1810.3
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 rating1853.5
Current Weighted rating1853.5
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1853.5
Current highest rating achieved1879.0
Current floor (min rating allowed)1379.0
Current K-factor24
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)±65.4
Current Raw change used (final)0.0
Projected new Raw rating1853.5
Projected new Weighed rating1705.2
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1879.0
Projected new floor1379.0
Projected new K-facor24
Projected new official/published rating (highest between new Raw, new WR and new WP)1853.5
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
3 Randburg Chess Club Championship 2024 2024/04/09 2024/05/21 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.5 1645.9 1634.0 Analysis
2 1st Knights Open Tournament 2024 (A) 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Standard 60 0.83 5 0 0.0 1640.0 1625.4 Analysis
1 Randburg Chess Club New Year Swiss 2024 2024/02/06 2024/02/06 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.0 1640.0 1625.4 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
29 Randburg Chess Club Championship 2024 2024/04/09 2024/05/21 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.5 1645.9 1634.0 Analysis
28 1st Knights Open Tournament 2024 (A) 2024/03/23 2024/03/23 Johannesburg Metro (GJM) Standard 60 0.83 5 0 0.0 1640.0 1625.4 Analysis
27 Randburg Chess Club New Year Swiss 2024 2024/02/06 2024/02/06 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.0 1640.0 1625.4 Analysis
26 Africawide Chess Championship 2023 (Open) 2023/11/03 2023/11/05 Johannesburg Metro (GJM) Standard 90 0.94 7 7 4.0 1621.4 1617.7 Analysis
25 Randburg Club Championships Swiss 2023 2023/08/29 2023/10/10 Johannesburg Metro (GJM) Standard 90 0.94 7 6 2.5 1662.2 1661.1 Analysis
24 Randburg Winter Swiss 2023 2023/06/13 2023/07/25 Johannesburg Metro (GJM) Standard 90 0.94 7 7 5.0 1643.2 1640.5 Analysis
23 Randburg Autumn Swiss 2023 2023/04/11 2023/05/23 Johannesburg Metro (GJM) Standard 90 0.94 7 5 3.0 1638.2 1635.0 Analysis
22 JMC 1 St Peters 2023 (A) 2023/03/18 2023/03/18 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1623.7 1621.1 Analysis
21 Randburg New Year Swiss 2023 2023/01/31 2023/03/14 Johannesburg Metro (GJM) Standard 90 0.94 7 7 5.0 1623.7 1621.1 Analysis
20 Randburg Summer Swiss 2022 2022/10/25 2022/12/06 Johannesburg Metro (GJM) Standard 90 0.94 7 6 4.0 1628.4 1627.8 Analysis
19 Randburg Club Championships Swiss 2022 2022/07/19 2022/09/06 Johannesburg Metro (GJM) Standard 90 0.94 7 7 5.5 1621.9 1621.1 Analysis
18 Chessheroes Youth Day 2022 (A1) 2022/06/16 2022/06/18 Johannesburg Metro (GJM) Standard 120 1.00 5 4 0.0 1653.6 1653.5 Analysis
17 2021 Lubowski Open Tournament (A) 2021/05/01 2021/05/02 Tshwane (GTP) Standard 90 0.94 5 5 2.5 1668.7 1669.1 Analysis
16 Ekurhuleni Chess Kempton Park Open 2020 (A) 2020/11/21 2020/11/21 Ekurhuleni (GE) Standard 60 0.83 5 5 1.5 1691.8 1697.2 Analysis
15 JNW Club - Trinityhouse Little Falls Open 2020 (A) 2020/03/14 2020/03/14 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.5 1710.2 1719.3 Analysis
14 The King`s Cup League 2020 (A) 2020/03/07 2020/03/07 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1710.2 1719.3 Analysis
13 JNW Club - Trinityhouse Randpark Ridge Open 2020 (A) 2020/02/22 2020/02/22 Johannesburg Metro (GJM) Standard 60 0.83 5 4 1.0 1781.3 1790.8 Analysis
12 Randburg Chess Club Autum Swiss 2020 2020/02/04 2020/03/10 Johannesburg Metro (GJM) Standard 90 0.94 6 6 3.5 1710.2 1719.3 Analysis
11 JNW Club - Bryanston Open1 2020 (A) 2020/02/01 2020/02/01 Johannesburg Metro (GJM) Standard 60 0.83 5 4 2.0 1781.3 1790.8 Analysis
10 The King`s Cup League 2019 (A) 2019/10/19 2019/10/19 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.5 1761.0 1767.0 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 14 8 1 5 8.5 60.7 91.1 1554.6 1645.7
White 7 5 0 2 5.0 71.4 182.1 1563.5 1745.6
Black 7 3 1 3 3.5 50.0 0.0 1545.7 1545.7
Standard All 14 8 1 5 8.5 60.7 91.1 1554.6 1645.7
White 7 5 0 2 5.0 71.4 182.1 1563.5 1745.6
Black 7 3 1 3 3.5 50.0 0.0 1545.7 1545.7
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 69 30 57 84.0 53.8 32.7 1597.5 1630.2
White 73 38 10 25 43.0 58.9 75.7 1576.8 1652.5
Black 83 31 20 32 41.0 49.4 -5.1 1615.8 1610.7
Standard All 149 68 29 52 82.5 55.4 45.6 1588.8 1634.4
White 70 38 9 23 42.5 60.7 91.1 1577.0 1668.1
Black 79 30 20 29 40.0 50.6 5.4 1599.1 1604.5
Rapid All 7 1 1 5 1.5 21.4 -242.9 1784.4 1541.5
White 3 0 1 2 0.5 16.7 -283.3 1571.1 1287.8
Black 4 1 0 3 1.0 25.0 -212.5 1944.4 1731.9
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 163015814 Kleyn, AE (Andrew) 8 4.0 2 4 2 50.0 1678.1 0.0 1678.1 View list
2 158022721 Metcalfe, AR (Allister) 8 2.5 2 1 5 31.3 1678.1 -159.4 1518.7 View list
3 170035526 Snyckers, FA (Frank) 4 4.0 4 0 0 100.0 1687.2 425.0 2112.2 View list
4 179057929 Essop, H (Haroon) 4 2.5 2 1 1 62.5 1637.8 106.3 1744.0 View list
5 174009090 Essop, R (Rashied) 4 1.5 1 1 2 37.5 1654.5 -106.3 1548.3 View list
6 1560115964 Van Der Berg, P (Pieter) 4 1.5 1 1 2 37.5 1647.8 -106.3 1541.6 View list
7 104053107 Govender, Y (Yaduvir) 3 2.5 2 1 0 83.3 1817.0 283.3 2100.3 View list
8 181035793 Sparks, SJW (Stephen) 3 2.5 2 1 0 83.3 1630.1 283.3 1913.4 View list
9 101050584 Mazibuko, K (Khanya) 3 1.0 0 2 1 33.3 1635.0 -141.7 1493.4 View list
10 159008414 Durow, NL (Neil) 3 0.5 0 1 2 16.7 1710.7 -283.3 1427.4 View list
11 103007373 Dinham, J (James) 3 0.0 0 0 3 0.0 1707.2 -425.0 1282.2 View list
12 1770144450 Boshoff, E (Ernst) 2 2.0 2 0 0 100.0 1625.2 425.0 2050.2 View list
13 1640119080 Goldberg, M (Mark) 2 2.0 2 0 0 100.0 1666.1 425.0 2091.1 View list
14 174027391 Ngakane, D (Dan) 2 2.0 2 0 0 100.0 1829.1 425.0 2254.1 View list
15 100072830 Offer, A (Asabi) 2 2.0 2 0 0 100.0 1711.0 425.0 2136.0 View list
16 203010232 Gardiner, N (Noa) 2 1.5 1 1 0 75.0 1702.5 212.5 1915.0 View list
17 202020794 Marais, N (Nina) 2 1.0 1 0 1 50.0 1768.5 0.0 1768.5 View list
18 187025727 Mpya, TM (Tshediso) 2 1.0 1 0 1 50.0 1805.5 0.0 1805.5 View list
19 102072832 Snyckers, A (Adam) 2 1.0 1 0 1 50.0 1643.0 0.0 1643.0 View list
20 187019959 Makoto, R (Rodwell) 2 0.5 0 1 1 25.0 1741.8 -212.5 1529.3 View list