Player Page

Van Der Westhuizen, D (Donald)
Dob: 2001/05/01 (Adult)
Gender: Male
Chess SA id: 101039600
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2023/12/08 (192 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 rating1575.4
Current Weighted rating1589.7
Current Weighted performance1236.3
Current official/published rating (highest between Raw, WR and WP)1589.7
Current highest rating achieved1690.7
Current floor (min rating allowed)1190.7
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)±97.1
Current Raw change used (final)0.0
Projected new Raw rating1575.4
Projected new Weighed rating1461.7
Projected new Weighted performance1236.3
Projected new final Raw rating (if new WP > new Raw)1575.4
Projected new highest rating1690.7
Projected new floor1190.7
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1575.4
Projected effective change (new Official - current Official)-14.3
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 rating1566.3
Current Weighted rating1583.3
Current Weighted performance1236.3
Current official/published rating (highest between Raw, WR and WP)1583.3
Current highest rating achieved1695.1
Current floor (min rating allowed)1195.1
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)±98.4
Current Raw change used (final)0.0
Projected new Raw rating1566.3
Projected new Weighed rating1455.7
Projected new Weighted performance1236.3
Projected new final Raw rating (if new WP > new Raw)1566.3
Projected new highest rating1695.1
Projected new floor1195.1
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1566.3
Projected effective change (new Official - current Official)-17.0
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 rating1636.3
Current Weighted rating1636.3
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1636.3
Current highest rating achieved1636.3
Current floor (min rating allowed)1136.3
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)±89.1
Current Raw change used (final)0.0
Projected new Raw rating1636.3
Projected new Weighed rating1505.4
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1636.3
Projected new floor1136.3
Projected new K-facor28
Projected new official/published rating (highest between new Raw, new WR and new WP)1636.3
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 rating1543.5
Current Weighted rating1534.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1543.5
Current highest rating achieved1578.0
Current floor (min rating allowed)1078.0
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)±101.6
Current Raw change used (final)0.0
Projected new Raw rating1543.5
Projected new Weighed rating1412.0
Projected new Weighted performance433.2
Projected new final Raw rating (if new WP > new Raw)1543.5
Projected new highest rating1578.0
Projected new floor1078.0
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1543.5
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
29 2023 USSA Championships (Open) 2023/12/04 2023/12/08 Ethekwini (KED) Standard 120 1.00 9 9 5.5 1586.0 1582.3 Analysis
28 WP Club League 2023 (A) 2023/07/29 2023/09/09 Cape Town (WCT) Standard 120 1.00 11 2 1.0 1609.5 1607.5 Analysis
27 WP Club League 2023 (B) 2023/07/29 2023/09/09 Cape Town (WCT) Standard 120 1.00 11 3 1.5 1609.5 1607.5 Analysis
26 Cape of Good Hope Open 2023 (Championship) 2023/01/28 2023/01/29 Cape Town (WCT) Standard 70 0.87 6 6 2.0 1612.2 1610.6 Analysis
25 Ussa Chess Championships 2022 (Open) 2022/12/05 2022/12/09 Frances Baard (NCF) Standard 120 1.00 9 9 6.0 1611.9 1610.3 Analysis
24 2022 Western Province Club League (C) 2022/08/20 2022/10/01 Cape Town (WCT) Standard 120 1.00 11 5 2.5 1638.8 1637.7 Analysis
23 2019 Inter Region Chess Championships 2020/01/09 2020/01/12 4 Knights (4K) Standard 120 1.00 7 6 3.0 1658.9 1656.7 Analysis
22 2019 South African Juior Blitz Championship (A) 2020/01/05 2020/01/05 4 Knights (4K) Blitz 5 0.18 7 7 3.0 1658.9 1564.3 Analysis
21 2019 South African Junior Team Championships (U20A) 2020/01/04 2020/01/08 4 Knights (4K) Standard 120 1.00 7 6 5.0 1658.9 1656.7 Analysis
20 2019 Gauteng School League Finals (U19 Open) 2019/08/24 2019/08/24 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1644.7 1639.1 Analysis
19 2019 D4 Tshwane South Schools League Team Finals (U19) 2019/07/27 2019/07/27 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1671.4 1671.6 Analysis
18 2019 Gauteng Secondary Schools Individual Chess Championships (U18 Boys) 2019/05/25 2019/05/25 Tshwane (GTP) Standard 60 0.83 5 5 4.0 1690.7 1695.1 Analysis
17 2019 Capablanca Chess Festival (RR C) 2019/04/18 2019/04/22 Tshwane (GTP) Standard 135 1.00 9 9 5.5 1677.5 1679.1 Analysis
16 2019 South African Junior Closed Chess Championship (U18 Open) 2019/03/17 2019/03/22 Chess South Africa (CSA) Standard 120 1.00 9 9 4.5 1639.8 1650.8 Analysis
15 2019 D4 Individual Finals (U18 Mixed) 2019/03/09 2019/03/09 Tshwane (GTP) Standard 60 0.83 5 5 4.5 1639.8 1650.8 Analysis
14 2019 TuksChess Open (A) 2019/02/23 2019/02/23 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1621.9 1630.4 Analysis
13 Boksburg Open 2019 (A) 2019/01/19 2019/01/19 Ekurhuleni (GE) Standard 60 0.83 5 5 3.5 1593.5 1594.8 Analysis
12 South African Junior Blitz 2018 (U18) 2018/12/19 2018/12/19 4 Knights (4K) Blitz 5 0.18 7 7 4.0 1595.3 1570.4 Analysis
11 South African Junior Team Championships 2018 (U18A) 2018/12/16 2018/12/20 4 Knights (4K) Standard 120 1.00 7 7 5.5 1595.3 1598.2 Analysis
10 2018 Gauteng League Final (U19) 2018/08/25 2018/08/25 Tshwane (GTP) Standard 60 0.83 5 5 5.0 1585.1 1586.4 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main 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
Standard 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
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 175 94 27 54 107.5 61.4 97.1 1470.2 1567.4
White 85 47 15 23 54.5 64.1 120.0 1459.2 1579.2
Black 90 47 12 31 53.0 58.9 75.6 1480.6 1556.2
Standard All 154 84 27 43 97.5 63.3 113.1 1457.0 1570.2
White 76 43 15 18 50.5 66.4 139.8 1443.2 1583.0
Black 78 41 12 25 47.0 60.3 87.2 1470.5 1557.7
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 21 10 0 11 10.0 47.6 -20.2 1567.3 1547.1
White 9 4 0 5 4.0 44.4 -47.2 1595.1 1547.9
Black 12 6 0 6 6.0 50.0 0.0 1546.5 1546.5
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 100031149 Prinsloo, MP (Marthinus) 4 2.5 2 1 1 62.5 1619.5 106.3 1725.8 View list
2 101050584 Mazibuko, K (Khanya) 4 0.0 0 0 4 0.0 1629.0 -425.0 1204.0 View list
3 101036703 Subbiah, KJ (Keshiv) 3 2.5 2 1 0 83.3 1640.7 283.3 1924.1 View list
4 104053107 Govender, Y (Yaduvir) 3 1.0 0 2 1 33.3 1619.0 -141.7 1477.3 View list
5 101015487 Khumalo, KB (Keith) 3 0.0 0 0 3 0.0 1613.2 -425.0 1188.2 View list
6 202008804 Engelbrecht, H (Hanri) 2 2.0 2 0 0 100.0 1658.1 425.0 2083.1 View list
7 104064895 Naidoo, T (Tashil) 2 2.0 2 0 0 100.0 1578.7 425.0 2003.7 View list
8 201037041 Swart, S (Sune) 2 2.0 2 0 0 100.0 1615.8 425.0 2040.8 View list
9 102089706 Thom, L (Liam) 2 2.0 2 0 0 100.0 1625.4 425.0 2050.4 View list
10 100003864 Bull, D (Dearan) 2 1.5 1 1 0 75.0 1638.0 212.5 1850.5 View list
11 105050597 Lefyedi, T (Thatego) 2 1.5 1 1 0 75.0 1658.9 212.5 1871.4 View list
12 100076144 Scheepers, R (Reinhardt) 2 1.5 1 1 0 75.0 1561.2 212.5 1773.7 View list
13 101009296 Felix, D (Devon) 2 1.0 1 0 1 50.0 1622.2 0.0 1622.2 View list
14 101000959 Jack, AW (Azile) 2 1.0 1 0 1 50.0 1651.8 0.0 1651.8 View list
15 202020794 Marais, N (Nina) 2 1.0 1 0 1 50.0 1580.4 0.0 1580.4 View list
16 198034674 Sikwati, L (Lizo) 2 1.0 1 0 1 50.0 1649.7 0.0 1649.7 View list
17 1030148162 Tseka, J (Junior) 2 1.0 1 0 1 50.0 1599.0 0.0 1599.0 View list
18 100003808 Bucceri, DR (Draven) 2 1.0 0 2 0 50.0 1599.0 0.0 1599.0 View list
19 102007831 Du Plessis, JAK (Jan) 2 1.0 0 2 0 50.0 1649.3 0.0 1649.3 View list
20 101032434 Rogge, CG (Conrad) 2 0.5 0 1 1 25.0 1655.6 -212.5 1443.1 View list