Player Page

Marais, A (Alexander)
Dob: 2015/05/17 (U10)
Gender: Male
Chess SA id: 1150140699
FIDE id:
Region: Cape Winelands (WCW)
Citizen: RSA
Title(s):
Last active: 2024/11/10 (13 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 rating1455.2
Current Weighted rating1391.3
Current Weighted performance1383.9
Current official/published rating (highest between Raw, WR and WP)1455.2
Current highest rating achieved1459.0
Current floor (min rating allowed)959.0
Current K-factor32
Games played this month6
Score (S)3.0
Expected score (We)4.50
Difference (S-We)-1.25
Current Raw change (no limits, including tournament time weight)-39.8
Current min/max change allowed (with limits)±115.3
Current Raw change used (final)-39.8
Projected new Raw rating1415.4
Projected new Weighed rating1283.6
Projected new Weighted performance1341.0
Projected new final Raw rating (if new WP > new Raw)1415.4
Projected new highest rating1459.0
Projected new floor959.0
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1415.4
Projected effective change (new Official - current Official)-39.8
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 rating1388.5
Current Weighted rating1327.0
Current Weighted performance1341.8
Current official/published rating (highest between Raw, WR and WP)1388.5
Current highest rating achieved1392.5
Current floor (min rating allowed)892.5
Current K-factor36
Games played this month6
Score (S)3.0
Expected score (We)4.04
Difference (S-We)-1.04
Current Raw change (no limits, including tournament time weight)-37.4
Current min/max change allowed (with limits)±126.8
Current Raw change used (final)-37.4
Projected new Raw rating1351.1
Projected new Weighed rating1224.0
Projected new Weighted performance1298.3
Projected new final Raw rating (if new WP > new Raw)1351.1
Projected new highest rating1392.5
Projected new floor892.5
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1351.1
Projected effective change (new Official - current Official)-37.4
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 rating1497.5
Current Weighted rating1419.6
Current Weighted performance1446.3
Current official/published rating (highest between Raw, WR and WP)1497.5
Current highest rating achieved1507.7
Current floor (min rating allowed)1007.7
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)±108.5
Current Raw change used (final)0.0
Projected new Raw rating1497.5
Projected new Weighed rating1309.8
Projected new Weighted performance1446.3
Projected new final Raw rating (if new WP > new Raw)1497.5
Projected new highest rating1507.7
Projected new floor1007.7
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1497.5
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved1200.0
Current floor (min rating allowed)700.0
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 rating1104.0
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1200.0
Projected new floor700.0
Projected new K-facor36
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
Tournaments
Tournament: Helderberg Chess Club Open 2024 (B)
Start: 2024/11/09  End: 2024/11/10  Host: WCT  Type: Standard   Time: 60  Time weight: 0.83  Rounds: 6
Games: 6  Score: 3.0
Main rating: 1455.2  Rating gain/loss: -39.8
Type rating: 1388.5  Rating gain/loss: -37.4
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
10 Helderberg Chess Club Open 2024 (B) 2024/11/09 2024/11/10 Cape Town (WCT) Standard 60 0.83 6 6 3.0 1455.2 1388.5 Analysis
9 UCT Open Chess Championship 2024 (U10) 2024/10/12 2024/10/13 Cape Town (WCT) Rapid 25 0.54 6 6 4.0 1455.2 1507.7 Analysis
8 Stellenbosch Primary 2024 (U9) 2024/08/17 2024/08/17 Cape Winelands (WCW) Rapid 30 0.60 5 5 5.0 1434.5 1480.2 Analysis
7 CT Metro District East Top Schools Chess 2024 (U9 Mixed) 2024/07/27 2024/07/28 Cape Town (WCT) Standard 60 0.83 5 5 3.0 1445.4 1392.5 Analysis
6 Cape Town Chess Federation Closed Chess Championships 2024 (U10) 2024/06/15 2024/06/15 Cape Town (WCT) Standard 60 0.83 5 4 3.0 1440.9 1373.5 Analysis
5 Western Cape PS Individuals Championship 2024 (U9 Boys) 2024/05/04 2024/05/05 West Coast (WCU) Standard 60 0.83 6 6 3.5 1458.7 1387.9 Analysis
4 Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) 2024/03/02 2024/03/03 Cape Town (WCT) Standard 60 0.83 6 6 4.0 1459.0 1342.1 Analysis
3 Mary-Anne Bartels Closed Chess Tournament 2024 (U7+U9 Mixed) 2024/02/24 2024/02/24 Cape Town (WCT) Rapid 30 0.60 5 5 5.0 1330.4 1360.4 Analysis
2 Cape of Good Hope Open Chess Tournament 2024 (U10) 2024/02/17 2024/02/17 Cape Town (WCT) Rapid 30 0.60 6 6 4.5 1330.4 1360.4 Analysis
1 CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 5 5.0 1330.4 1252.8 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
27 Helderberg Chess Club Open 2024 (B) 2024/11/09 2024/11/10 Cape Town (WCT) Standard 60 0.83 6 6 3.0 1455.2 1388.5 Analysis
26 UCT Open Chess Championship 2024 (U10) 2024/10/12 2024/10/13 Cape Town (WCT) Rapid 25 0.54 6 6 4.0 1455.2 1507.7 Analysis
25 Stellenbosch Primary 2024 (U9) 2024/08/17 2024/08/17 Cape Winelands (WCW) Rapid 30 0.60 5 5 5.0 1434.5 1480.2 Analysis
24 CT Metro District East Top Schools Chess 2024 (U9 Mixed) 2024/07/27 2024/07/28 Cape Town (WCT) Standard 60 0.83 5 5 3.0 1445.4 1392.5 Analysis
23 Cape Town Chess Federation Closed Chess Championships 2024 (U10) 2024/06/15 2024/06/15 Cape Town (WCT) Standard 60 0.83 5 4 3.0 1440.9 1373.5 Analysis
22 Western Cape PS Individuals Championship 2024 (U9 Boys) 2024/05/04 2024/05/05 West Coast (WCU) Standard 60 0.83 6 6 3.5 1458.7 1387.9 Analysis
21 Cape Town Metro Schools Chess Closed Individuals 2024 (U9 Boys) 2024/03/02 2024/03/03 Cape Town (WCT) Standard 60 0.83 6 6 4.0 1459.0 1342.1 Analysis
20 Mary-Anne Bartels Closed Chess Tournament 2024 (U7+U9 Mixed) 2024/02/24 2024/02/24 Cape Town (WCT) Rapid 30 0.60 5 5 5.0 1330.4 1360.4 Analysis
19 Cape of Good Hope Open Chess Tournament 2024 (U10) 2024/02/17 2024/02/17 Cape Town (WCT) Rapid 30 0.60 6 6 4.5 1330.4 1360.4 Analysis
18 CT District East Schools Chess Individuals Trails 2024 (U7+U9 Boys) 2024/02/03 2024/02/03 Cape Town (WCT) Standard 60 0.83 5 5 5.0 1330.4 1252.8 Analysis
17 Kraaifontein Open 2023 (U10) 2023/12/09 2023/12/09 Cape Town (WCT) Rapid 30 0.60 6 6 3.5 1333.9 1355.9 Analysis
16 Grant East Primary School Invitational Chess Tournament 2023 (U9 Mixed) 2023/11/04 2023/11/04 Cape Town (WCT) Rapid 30 0.60 6 6 5.0 1297.4 1288.6 Analysis
15 Western Cape Closed Championship 2023 (U10) 2023/09/23 2023/09/23 Cape Town (WCT) Rapid 25 0.54 6 6 3.0 1296.0 1280.0 Analysis
14 Stellenbosch Primary Chess Tournament 2023 (U10) 2023/08/19 2023/08/19 Cape Winelands (WCW) Rapid 30 0.60 6 6 4.0 1286.5 1258.4 Analysis
13 Cape Winelands Open 2023 (U10) 2023/07/23 2023/07/23 Cape Winelands (WCW) Standard 70 0.87 5 5 3.0 1272.7 1237.3 Analysis
12 GPCA Rapid 2023 (U10) 2023/06/24 2023/06/24 Cape Town (WCT) Rapid 25 0.54 7 7 4.0 1240.0 1257.0 Analysis
11 WP Closed 2023 (U10) 2023/06/17 2023/06/17 Cape Town (WCT) Standard 60 0.83 5 5 3.0 1240.0 1202.0 Analysis
10 Steinitz Open 2023 (U10) 2023/05/27 2023/05/27 Cape Town (WCT) Rapid 20 0.47 5 5 2.0 1247.5 1289.0 Analysis
9 Rhenish Primary Tournament 2023 (U10) 2023/05/13 2023/05/13 Cape Winelands (WCW) Rapid 30 0.60 5 5 3.0 1247.5 1289.0 Analysis
8 Western Cape PS Individuals 2023 (U9 Boys) 2023/05/05 2023/05/06 Cape Town (WCT) Standard 60 0.83 6 6 3.0 1247.5 1200.0 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 54 39 2 13 40.0 74.1 204.6 1268.4 1473.0
White 27 20 0 7 20.0 74.1 204.6 1282.5 1487.1
Black 27 19 2 6 20.0 74.1 204.6 1254.3 1458.9
Standard All 32 21 1 10 21.5 67.2 146.1 1280.4 1426.5
White 16 10 0 6 10.0 62.5 106.3 1297.8 1404.1
Black 16 11 1 4 11.5 71.9 185.9 1262.9 1448.9
Rapid All 22 18 1 3 18.5 84.1 289.8 1251.0 1540.8
White 11 10 0 1 10.0 90.9 347.7 1260.2 1607.9
Black 11 8 1 2 8.5 77.3 231.8 1241.7 1473.6
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 143 91 3 49 92.5 64.7 124.8 1246.3 1371.1
White 72 41 0 31 41.0 56.9 59.0 1263.8 1322.8
Black 71 50 3 18 51.5 72.5 191.5 1228.5 1420.1
Standard All 48 30 1 17 30.5 63.5 115.1 1278.3 1393.4
White 24 13 0 11 13.0 54.2 35.4 1311.5 1346.9
Black 24 17 1 6 17.5 72.9 194.8 1245.1 1439.9
Rapid All 95 61 2 32 62.0 65.3 129.7 1230.1 1359.9
White 48 28 0 20 28.0 58.3 70.8 1240.0 1310.8
Black 47 33 2 12 34.0 72.3 189.9 1220.1 1409.9
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 1160150273 Kruger, J (Josua Baruch) 4 2.0 2 0 2 50.0 1330.2 0.0 1330.2 View list
2 1150136552 Van Der Merwe, S (Schalk Wolf) 4 0.0 0 0 4 0.0 1374.3 -425.0 949.3 View list
3 2150157088 He, L (Lily) 3 3.0 3 0 0 100.0 1339.6 425.0 1764.6 View list
4 1160150117 Lin, J (Junming) 3 2.0 2 0 1 66.7 1411.6 141.7 1553.3 View list
5 1150139446 Small, W (Wyatt) 3 2.0 2 0 1 66.7 1304.9 141.7 1446.5 View list
6 1140146769 Klopper, B (Ben) 3 0.0 0 0 3 0.0 1281.0 -425.0 856.0 View list
7 1140137347 Whyatt, B (Benji) 3 0.0 0 0 3 0.0 1259.1 -425.0 834.1 View list
8 1150150111 Foster, B (Bjorn) 2 2.0 2 0 0 100.0 1313.9 425.0 1738.9 View list
9 2170147533 Klopper, E (Elbe) 2 2.0 2 0 0 100.0 1261.0 425.0 1686.0 View list
10 2150150276 Smith, W (Willow) 2 2.0 2 0 0 100.0 1340.5 425.0 1765.5 View list
11 1140143665 Somai, J (Jhash) 2 2.0 2 0 0 100.0 1303.3 425.0 1728.3 View list
12 1150145643 Tredoux, J (Jean) 2 2.0 2 0 0 100.0 1247.5 425.0 1672.5 View list
13 1150140719 Webb, P (Paul) 2 2.0 2 0 0 100.0 1253.2 425.0 1678.2 View list
14 1150191203 Beukes, B (Benjamin) 2 1.5 1 1 0 75.0 1396.3 212.5 1608.8 View list
15 1150142376 Baker, A (Andrew) 2 1.0 1 0 1 50.0 1349.5 0.0 1349.5 View list
16 2150147534 Sher, I (Ivy) 2 1.0 1 0 1 50.0 1244.6 0.0 1244.6 View list
17 1150193579 Johnson, B (Brian) 2 0.0 0 0 2 0.0 1448.1 -425.0 1023.1 View list
18 1140134078 Manning, C (Callan) 2 0.0 0 0 2 0.0 1272.6 -425.0 847.6 View list
19 1140137341 Sher, E (Evan) 2 0.0 0 0 2 0.0 1252.3 -425.0 827.3 View list
20 1150137343 Stern, M (Mason) 2 0.0 0 0 2 0.0 1268.0 -425.0 843.0 View list