Player Page

Grobbelaar, J (Jacqui)
Dob: 1994/11/09 (Adult)
Gender: Female
Chess SA id: 294011237
FIDE id:
Region: Cape Town (WCT)
Citizen: RSA
Title(s): PA
Last active: 2024/05/12 (6 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
Curent Raw rating1601.4
Curent Weighted rating1582.1
Curent Weighted performance1499.2
Current official/published rating (highest between Raw, WR and WP)1601.4
Current floor (min rating allowed)1191.4
Current highest rating achieved1691.4
Current K-factor28
Games played this month4
Score (S)1.0
Expected score (We)1.55
Difference (S-We)-0.55
Current Raw change (no limits, including tournament time weight)-14.5
Current min/max change allowed (with limits)±93.6
Current Raw change used (final)-14.5
Projected new Raw rating1586.9
Projected new Weighed rating1583.4
Projected new Weighted performance1499.2
Projected new official/published rating (highest between new Raw, new WR and new WP)1586.9
Projected effective change (new Official - current Official)-14.5
Projected new highest rating1691.4
Projected new floor1191.4
Projected new K-facor28
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
Curent Raw rating1616.8
Curent Weighted rating1594.8
Curent Weighted performance1532.0
Current official/published rating (highest between Raw, WR and WP)1616.8
Current floor (min rating allowed)1189.7
Current highest rating achieved1689.7
Current K-factor28
Games played this month4
Score (S)1.0
Expected score (We)1.71
Difference (S-We)-0.71
Current Raw change (no limits, including tournament time weight)-19.9
Current min/max change allowed (with limits)±91.6
Current Raw change used (final)-19.9
Projected new Raw rating1596.9
Projected new Weighed rating1595.7
Projected new Weighted performance1532.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1596.9
Projected effective change (new Official - current Official)-19.9
Projected new highest rating1689.7
Projected new floor1189.7
Projected new K-facor28
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
Curent Raw rating1565.9
Curent Weighted rating1588.4
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1588.4
Current floor (min rating allowed)1174.3
Current highest rating achieved1674.3
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)±98.5
Current Raw change used (final)0.0
Projected new Raw rating1565.9
Projected new Weighed rating1586.2
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1586.2
Projected effective change (new Official - current Official)-2.2
Projected new highest rating1674.3
Projected new floor1174.3
Projected new K-facor28
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
Curent Raw rating1651.6
Curent Weighted rating1666.2
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1666.2
Current floor (min rating allowed)1174.3
Current highest rating achieved1723.6
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)±87.1
Current Raw change used (final)0.0
Projected new Raw rating1651.6
Projected new Weighed rating1663.9
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1663.9
Projected effective change (new Official - current Official)-2.4
Projected new highest rating1723.6
Projected new floor1174.3
Projected new K-facor28
Tournaments
Tournament: Steinitz Chess Festival 2024 (Championship)
Start: 2024/05/10  End: 2024/05/12  Host: WCT  Type: Standard   Time: 90  Time weight: 0.94  Rounds: 4
Games: 4  Score: 1.0
Main rating: 1601.4  Rating gain/loss: -14.5
Type rating: 1616.8  Rating gain/loss: -19.9
Analysis
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 Steinitz Chess Festival 2024 (Championship) 2024/05/10 2024/05/12 Cape Town (WCT) Standard 90 0.94 6 4 1.0 1601.4 1616.8 Analysis
3 Hermanus Chess Club Open 2024 (Advanced) 2024/04/20 2024/04/20 Overberg (WOS) Rapid 20 0.47 7 7 4.0 1590.8 1589.7 Analysis
2 South African Closed Chess Championship 2024 (Ladies) 2024/03/25 2024/04/02 Cape Town (WCT) Standard 150 1.00 11 11 4.5 1590.8 1604.5 Analysis
1 Cape of Good Hope Open Chess Tournament 2024 (Championship) 2024/02/17 2024/02/17 Cape Town (WCT) Standard 90 0.94 5 5 0.5 1618.2 1628.3 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
39 Steinitz Chess Festival 2024 (Championship) 2024/05/10 2024/05/12 Cape Town (WCT) Standard 90 0.94 6 4 1.0 1601.4 1616.8 Analysis
38 Hermanus Chess Club Open 2024 (Advanced) 2024/04/20 2024/04/20 Overberg (WOS) Rapid 20 0.47 7 7 4.0 1590.8 1589.7 Analysis
37 South African Closed Chess Championship 2024 (Ladies) 2024/03/25 2024/04/02 Cape Town (WCT) Standard 150 1.00 11 11 4.5 1590.8 1604.5 Analysis
36 Cape of Good Hope Open Chess Tournament 2024 (Championship) 2024/02/17 2024/02/17 Cape Town (WCT) Standard 90 0.94 5 5 0.5 1618.2 1628.3 Analysis
35 Kraaifontein Open 2023 (Adanced) 2023/12/09 2023/12/10 Cape Town (WCT) Standard 70 0.87 6 5 3.5 1595.1 1601.5 Analysis
34 Western Cape Closed Championship 2023 (Blitz) 2023/09/23 2023/09/25 Cape Town (WCT) Blitz 7 0.23 7 7 4.5 1591.7 1677.4 Analysis
33 CW Top Schools 2023 (Elite) 2023/08/11 2023/08/13 West Coast (WCU) Standard 90 0.94 6 6 4.5 1551.7 1560.9 Analysis
32 Hermanus Rapid 2023 (A) 2023/04/22 2023/04/22 Overberg (WOS) Rapid 25 0.54 6 6 2.5 1536.9 1591.4 Analysis
31 Chess WP Individual Blitz 2023 (Open) 2023/01/03 2023/01/03 Cape Town (WCT) Blitz 5 0.18 7 7 4.0 1537.0 1723.6 Analysis
30 Western Cape Woman`s Championship 2022 (Elite) 2022/09/02 2022/09/04 West Coast (WCU) Standard 90 0.94 5 4 0.0 1563.8 1593.9 Analysis
29 South African Open 2022 (Championship) 2022/07/09 2022/07/17 Cape Town (WCT) Standard 120 1.00 11 11 4.0 1581.2 1578.2 Analysis
28 Curro Durbanville Chess Open Rapid 2022 (A) 2022/07/02 2022/07/02 Cape Town (WCT) Rapid 25 0.54 6 5 2.0 1581.2 1674.3 Analysis
27 2022 South African Closed Chess Championships (Women) 2022/05/08 2022/05/14 Chess South Africa (CSA) Standard 150 1.00 7 6 1.5 1593.5 1590.0 Analysis
26 Moja Open 2022 (Ladies) 2022/03/19 2022/03/22 Frances Baard (NCF) Standard 120 1.00 7 7 4.5 1616.7 1617.2 Analysis
25 2022 Chris Greyling Open (A) 2022/03/12 2022/03/12 Tshwane (GTP) Standard 60 0.83 5 4 1.0 1616.7 1617.2 Analysis
24 2022 Tshwane Chess Open Registration Tournament (A) 2022/01/29 2022/01/29 Tshwane (GTP) Standard 60 0.83 5 5 2.5 1613.7 1612.4 Analysis
23 2021 Milos Ristic Open (A) 2021/10/09 2021/10/09 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1613.2 1612.1 Analysis
22 2021 Gauteng North Open Tournament (A) 2021/08/28 2021/08/29 Tshwane (GTP) Standard 90 0.94 5 5 1.0 1622.7 1623.0 Analysis
21 2021 Blou Bul Tournament (A) 2021/04/10 2021/04/10 Mangaung (FMB) Standard 60 0.83 5 5 1.5 1643.4 1648.5 Analysis
20 Ekurhuleni Chess Chessa Open 2021 (A) 2021/03/27 2021/03/28 Ekurhuleni (GE) Standard 90 0.94 5 5 4.5 1597.6 1602.0 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 27 7 6 14 10.0 37.0 -110.2 1658.7 1548.5
White 12 4 3 5 5.5 45.8 -35.4 1646.1 1610.7
Black 15 3 3 9 4.5 30.0 -170.0 1668.7 1498.7
Standard All 20 4 4 12 6.0 30.0 -170.0 1725.0 1555.0
White 9 2 2 5 3.0 33.3 -141.7 1713.0 1571.3
Black 11 2 2 7 3.0 27.3 -193.2 1734.8 1541.6
Rapid All 7 3 2 2 4.0 57.1 60.7 1469.3 1530.0
White 3 2 1 0 2.5 83.3 283.3 1445.5 1728.8
Black 4 1 1 2 1.5 37.5 -106.3 1487.1 1380.8
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 239 86 33 120 102.5 42.9 -60.5 1644.9 1584.5
White 115 47 14 54 54.0 47.0 -25.9 1656.3 1630.5
Black 124 39 19 66 48.5 39.1 -92.5 1634.4 1541.8
Standard All 188 65 28 95 79.0 42.0 -67.8 1652.7 1584.8
White 93 38 11 44 43.5 46.8 -27.4 1663.3 1635.9
Black 95 27 17 51 35.5 37.4 -107.4 1642.3 1534.9
Rapid All 27 9 4 14 11.0 40.7 -78.7 1607.5 1528.8
White 12 5 3 4 6.5 54.2 35.4 1601.2 1636.7
Black 15 4 1 10 4.5 30.0 -170.0 1612.5 1442.5
Blitz All 24 12 1 11 12.5 52.1 17.7 1626.6 1644.3
White 10 4 0 6 4.0 40.0 -85.0 1658.0 1573.0
Black 14 8 1 5 8.5 60.7 91.1 1604.1 1695.2
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 297009288 February, JN (Jesse) 5 1.5 1 1 3 30.0 1567.6 -170.0 1397.6 View list
2 278035664 Laubscher, A (Anzel) 5 1.0 0 2 3 20.0 1580.6 -255.0 1325.6 View list
3 105009732 Fourie, B (Brandon) 4 2.0 2 0 2 50.0 1654.2 0.0 1654.2 View list
4 200007735 Du Plessis, AC (Anika) 4 2.0 1 2 1 50.0 1540.9 0.0 1540.9 View list
5 293034027 Selkirk, RJ (Rebecca) 4 0.5 0 1 3 12.5 1562.4 -318.8 1243.7 View list
6 105018698 Lubbe, DS (David) 3 3.0 3 0 0 100.0 1624.8 425.0 2049.8 View list
7 203001927 Bester, C (Carla) 3 2.0 2 0 1 66.7 1566.1 141.7 1707.8 View list
8 202020794 Marais, N (Nina) 3 2.0 1 2 0 66.7 1626.5 141.7 1768.2 View list
9 201043193 Wolmarans, R (Riekie) 3 2.0 1 2 0 66.7 1602.5 141.7 1744.2 View list
10 296040218 Klaasen, RJ (Robyn) 3 1.5 1 1 1 50.0 1574.1 0.0 1574.1 View list
11 104064895 Naidoo, T (Tashil) 3 1.5 1 1 1 50.0 1610.2 0.0 1610.2 View list
12 170033599 Schuller, A (Ashley) 3 1.0 1 0 2 33.3 1576.4 -141.7 1434.7 View list
13 156039522 Van Der Walt, PE (Pierre) 3 1.0 1 0 2 33.3 1641.5 -141.7 1499.8 View list
14 199042452 Waters, A (Anre) 3 1.0 1 0 2 33.3 1691.9 -141.7 1550.2 View list
15 299040998 Van Zyl, C (Charlize) 3 0.5 0 1 2 16.7 1574.1 -283.3 1290.8 View list
16 162017968 Lewis, MMM (Mark) 3 0.0 0 0 3 0.0 1551.7 -425.0 1126.7 View list
17 1020104104 Bezuidenhout, LP (Lian) 2 2.0 2 0 0 100.0 1620.5 425.0 2045.5 View list
18 1010115854 De Villiers, AM (Ammen Mohammed) 2 2.0 2 0 0 100.0 1564.3 425.0 1989.3 View list
19 206091525 Nel, H (Hayley) 2 2.0 2 0 0 100.0 1603.8 425.0 2028.8 View list
20 108083939 Rosenberg, W (Wagheed) 2 2.0 2 0 0 100.0 1592.9 425.0 2017.9 View list