Player Page

Van Der Merwe, RH (Riaan)
Dob: 1968/09/17 (Adult)
Gender: Male
Chess SA id: 1680100603
FIDE id:
Region: Overberg (WOS)
Citizen: RSA
Title(s):
Last active: 2023/12/10 (348 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 rating1365.1
Current Weighted rating1357.6
Current Weighted performance1103.5
Current official/published rating (highest between Raw, WR and WP)1365.1
Current highest rating achieved1365.1
Current floor (min rating allowed)865.1
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)±131.1
Current Raw change used (final)0.0
Projected new Raw rating1365.1
Projected new Weighed rating1249.6
Projected new Weighted performance1103.5
Projected new final Raw rating (if new WP > new Raw)1365.1
Projected new highest rating1365.1
Projected new floor865.1
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1365.1
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 rating1365.8
Current Weighted rating1360.0
Current Weighted performance850.9
Current official/published rating (highest between Raw, WR and WP)1365.8
Current highest rating achieved1365.8
Current floor (min rating allowed)865.8
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)±130.9
Current Raw change used (final)0.0
Projected new Raw rating1365.8
Projected new Weighed rating1251.6
Projected new Weighted performance850.9
Projected new final Raw rating (if new WP > new Raw)1365.8
Projected new highest rating1365.8
Projected new floor865.8
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1365.8
Projected effective change (new Official - current Official)=0.0
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 rating1273.4
Current Weighted rating1265.1
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1273.4
Current highest rating achieved1273.4
Current floor (min rating allowed)773.4
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 rating1273.4
Projected new Weighed rating1164.6
Projected new Weighted performance759.2
Projected new final Raw rating (if new WP > new Raw)1273.4
Projected new highest rating1273.4
Projected new floor773.4
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1273.4
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 rating1217.9
Current Weighted rating1212.6
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1217.9
Current highest rating achieved1217.9
Current floor (min rating allowed)717.9
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)±161.6
Current Raw change used (final)0.0
Projected new Raw rating1217.9
Projected new Weighed rating1115.9
Projected new Weighted performance240.0
Projected new final Raw rating (if new WP > new Raw)1217.9
Projected new highest rating1217.9
Projected new floor717.9
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1217.9
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
13 2023 Western Cape Rural Cup (Open) 2023/12/09 2023/12/10 Cape Winelands (WCW) Standard 60 0.83 5 4 1.5 1347.8 1343.5 Analysis
12 Bonnievale Open Rapid 2023 (Intermediate) 2023/10/21 2023/10/21 Cape Winelands (WCW) Rapid 25 0.54 6 6 4.0 1330.5 1223.4 Analysis
11 Hermanus Rapid 2023 (B) 2023/04/22 2023/04/22 Overberg (WOS) Rapid 25 0.54 6 5 2.0 1336.9 1250.0 Analysis
10 Swellendam Blitz 2021 (Seniors) 2021/06/11 2021/06/11 Overberg (WOS) Blitz 5 0.18 7 6 3.0 1308.7 1200.0 Analysis
9 OCF Club Champs 2021 (Seniors) 2021/06/05 2021/08/14 Overberg (WOS) Standard 60 0.83 10 5 4.5 1307.3 1308.9 Analysis
8 2019 Western Cape Club Championship (A+B) 2019/10/25 2019/10/27 Overberg (WOS) Standard 65 0.85 6 6 3.5 1288.8 1286.2 Analysis
7 Bontebok 2019 (U18+Open) 2019/08/17 2019/08/17 Overberg (WOS) Standard 60 0.83 5 4 2.5 1299.9 1295.2 Analysis
6 Overberg Club Champs 2019 (A) 2019/06/15 2019/06/15 Overberg (WOS) Standard 60 0.83 5 5 3.5 1279.0 1267.8 Analysis
5 Trial 2 Teddy/Toy Tournament 2019 (Open) 2019/04/06 2019/04/06 Overberg (WOS) Standard 60 0.83 5 5 3.5 1252.4 1231.8 Analysis
4 Caledon Casino 2 2018 (Open) 2018/10/20 2018/10/20 Overberg (WOS) Standard 60 0.83 5 5 3.5 1235.1 1212.4 Analysis
3 Strategema Robertson 2018 (Open) 2018/09/08 2018/09/08 Cape Winelands (WCW) Rapid 30 0.60 3 3 2.5 1210.3 1200.0 Analysis
2 Overberg 2nd Trial 2018 (Open) 2018/05/05 2018/05/05 Overberg (WOS) Standard 60 0.83 5 4 2.0 1216.3 1219.6 Analysis
1 Overberg Chess 1st Trial 2018 (A) 2018/04/14 2018/04/14 Overberg (WOS) Standard 60 0.83 5 5 3.0 1200.0 1200.0 Analysis
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 63 34 10 19 39.0 61.9 101.2 1256.3 1357.5
White 31 24 2 5 25.0 80.6 260.5 1212.9 1473.3
Black 32 10 8 14 14.0 43.8 -53.1 1298.4 1245.3
Standard All 43 23 9 11 27.5 64.0 118.6 1236.2 1354.8
White 23 18 2 3 19.0 82.6 277.2 1194.6 1471.7
Black 20 5 7 8 8.5 42.5 -63.8 1284.1 1220.4
Rapid All 14 8 1 5 8.5 60.7 91.1 1313.6 1404.7
White 6 5 0 1 5.0 83.3 283.3 1284.1 1567.4
Black 8 3 1 4 3.5 43.8 -53.1 1335.7 1282.6
Blitz All 6 3 0 3 3.0 50.0 0.0 1266.7 1266.7
White 2 1 0 1 1.0 50.0 0.0 1209.6 1209.6
Black 4 2 0 2 2.0 50.0 0.0 1295.3 1295.3
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 177094925 Esemene, L (Lkechukwuka) 3 0.5 0 1 2 16.7 1243.5 -283.3 960.1 View list
2 107078353 De Wet, M (Malcolm) 2 2.0 2 0 0 100.0 1333.7 425.0 1758.7 View list
3 1870102794 Mackenzie, T (Tyrol) 2 2.0 2 0 0 100.0 1247.7 425.0 1672.7 View list
4 1020103080 Stuurman, J (Jayden -Lee) 2 2.0 2 0 0 100.0 1294.3 425.0 1719.3 View list
5 104089003 Minnie, T (Taylin) 2 1.0 1 0 1 50.0 1271.9 0.0 1271.9 View list
6 203009187 Eyberg, Z (Zoe) 1 1.0 1 0 0 100.0 1279.0 425.0 1704.0 View list
7 102084005 Booysen, K (Keanan) 1 1.0 1 0 0 100.0 1252.4 425.0 1677.4 View list
8 105089008 De Wee, S (Stewan) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
9 1000106128 Hendriks, B (Breyten) 1 1.0 1 0 0 100.0 1210.3 425.0 1635.3 View list
10 103092956 Daniels, J (Jerome) 1 1.0 1 0 0 100.0 1288.8 425.0 1713.8 View list
11 199005957 Dando, P (Paul) 1 1.0 1 0 0 100.0 1330.5 425.0 1755.5 View list
12 100091545 Cookson, J (Jaydon) 1 1.0 1 0 0 100.0 1216.3 425.0 1641.3 View list
13 1980102793 Booi, O (Ocean) 1 1.0 1 0 0 100.0 1252.4 425.0 1677.4 View list
14 164013218 Isaacs, WS (William) 1 1.0 1 0 0 100.0 1347.8 425.0 1772.8 View list
15 1030111329 Jacobs, LC (Lee Carlos) 1 1.0 1 0 0 100.0 1308.7 425.0 1733.7 View list
16 1860134641 Joubert, D (Danie) 1 1.0 1 0 0 100.0 1307.3 425.0 1732.3 View list
17 1080112286 Kana, Z (Zaywon) 1 1.0 1 0 0 100.0 1330.5 425.0 1755.5 View list
18 103079684 Lombaard, J (Jowayne) 1 1.0 1 0 0 100.0 1252.4 425.0 1677.4 View list
19 1040134464 Michaels, F (Franzith) 1 1.0 1 0 0 100.0 1308.7 425.0 1733.7 View list
20 199078220 Michaels, J (Jacques) 1 1.0 1 0 0 100.0 1299.9 425.0 1724.9 View list