Player Page

Grootboom, EE (Elrich)
Dob: 1977/04/17 (Adult)
Gender: Male
Chess SA id: 177011444
FIDE id:
Region: Ekurhuleni (GE)
Citizen: RSA
Title(s): PA,NI
Last active: 2023/12/15 (154 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 rating1673.1
Curent Weighted rating1681.3
Curent Weighted performance1139.0
Current official/published rating (highest between Raw, WR and WP)1681.3
Current floor (min rating allowed)1195.2
Current highest rating achieved1695.2
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)±84.5
Current Raw change used (final)0.0
Projected new Raw rating1673.1
Projected new Weighed rating1680.8
Projected new Weighted performance1139.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1680.8
Projected effective change (new Official - current Official)-0.4
Projected new highest rating1695.2
Projected new floor1195.2
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 rating1710.5
Curent Weighted rating1699.3
Curent Weighted performance1035.2
Current official/published rating (highest between Raw, WR and WP)1710.5
Current floor (min rating allowed)1210.5
Current highest rating achieved1710.5
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)±80.1
Current Raw change used (final)0.0
Projected new Raw rating1710.5
Projected new Weighed rating1701.0
Projected new Weighted performance1035.2
Projected new official/published rating (highest between new Raw, new WR and new WP)1710.5
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1710.5
Projected new floor1210.5
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 rating1604.4
Curent Weighted rating1644.9
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1644.9
Current floor (min rating allowed)1173.0
Current highest rating achieved1673.0
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)±93.2
Current Raw change used (final)0.0
Projected new Raw rating1604.4
Projected new Weighed rating1640.7
Projected new Weighted performance0.0
Projected new official/published rating (highest between new Raw, new WR and new WP)1640.7
Projected effective change (new Official - current Official)-4.3
Projected new highest rating1673.0
Projected new floor1173.0
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 rating1675.5
Curent Weighted rating1675.5
Curent Weighted performance0.0
Current official/published rating (highest between Raw, WR and WP)1675.5
Current floor (min rating allowed)1173.0
Current highest rating achieved1675.5
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)±84.2
Current Raw change used (final)0.0
Projected new Raw rating1675.5
Projected new Weighed rating1675.5
Projected new Weighted performance
Projected new official/published rating (highest between new Raw, new WR and new WP)1675.5
Projected effective change (new Official - current Official)=0.0
Projected new highest rating1675.5
Projected new floor1173.0
Projected new K-facor28
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
8 Chess Power House Festive Rapid 2023 (B) 2023/12/15 2023/12/15 Johannesburg Metro (GJM) Rapid 20 0.47 6 6 3.0 1695.2 1675.5 Analysis
7 Chess Power House Feb RR 2023 (C) 2023/02/18 2023/02/18 Johannesburg Metro (GJM) Standard 62 0.84 5 4 3.0 1663.2 1660.5 Analysis
6 Heidelberg Open 2020 (Prestige) 2020/01/31 2020/02/02 Sedibeng (GSV) Standard 120 1.00 5 4 1.5 1672.2 1673.1 Analysis
5 2019 Inter Region Chess Championships 2020/01/09 2020/01/12 4 Knights (4K) Standard 120 1.00 7 5 3.0 1657.1 1656.9 Analysis
4 Chess Power House 2019 (B) 2019/08/24 2019/08/24 Johannesburg Metro (GJM) Standard 60 0.83 5 5 3.0 1667.1 1668.7 Analysis
3 Chess Power House Closed 2019 2019/01/17 2019/02/28 Ekurhuleni (GE) Standard 90 0.94 7 7 1.5 1658.4 1658.9 Analysis
2 2018 Inter Region Chess Championships 2018/12/21 2018/12/24 4 Knights (4K) Standard 120 1.00 7 6 3.5 1639.9 1639.9 Analysis
1 South African Inter Regional Championships 2017 2018/01/09 2018/01/12 4 Knights (4K) Standard 120 1.00 7 6 2.0 1675.5 1675.5 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 43 15 11 17 20.5 47.7 -19.8 1657.9 1638.2
White 22 9 5 8 11.5 52.3 19.3 1603.9 1623.3
Black 21 6 6 9 9.0 42.9 -60.7 1714.5 1653.8
Standard All 37 12 11 14 17.5 47.3 -23.0 1710.6 1687.6
White 19 9 5 5 11.5 60.5 89.5 1624.4 1713.8
Black 18 3 6 9 6.0 33.3 -141.7 1801.5 1659.9
Rapid All 6 3 0 3 3.0 50.0 0.0 1333.3 1333.3
White 3 0 0 3 0.0 0.0 -425.0 1474.5 1049.5
Black 3 3 0 0 3.0 100.0 425.0 1192.2 1617.2
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 195028678 Oberholzer, F (Francois) 2 0.5 0 1 1 25.0 1657.7 -212.5 1445.2 View list
2 186020282 Maluleke, PE (Pfumelani) 1 1.0 1 0 0 100.0 1657.1 425.0 2082.1 View list
3 183068085 Magagula, R (Raymond) 1 1.0 1 0 0 100.0 1663.2 425.0 2088.2 View list
4 100017074 Landitho, M (Mzwandile) 1 1.0 1 0 0 100.0 1639.9 425.0 2064.9 View list
5 107077218 Lake, E (Ethan) 1 1.0 1 0 0 100.0 1667.1 425.0 2092.1 View list
6 197013325 Jacobs, CL (Cavan) 1 1.0 1 0 0 100.0 1657.1 425.0 2082.1 View list
7 1760157178 Ambrose, T (Thomas) 1 1.0 1 0 0 100.0 1695.2 425.0 2120.2 View list
8 183057228 Mathabe, K (Kabelo) 1 1.0 1 0 0 100.0 1695.2 425.0 2120.2 View list
9 173022117 Mbedza, R (Richard) 1 1.0 1 0 0 100.0 1658.4 425.0 2083.4 View list
10 174024260 Mokomele, A (Andrew) 1 1.0 1 0 0 100.0 1663.2 425.0 2088.2 View list
11 1060107811 Mokwena, TK (Thato Kole) 1 1.0 1 0 0 100.0 1667.1 425.0 2092.1 View list
12 1990190892 Molefe, K (Kgosiemang) 1 1.0 1 0 0 100.0 1695.2 425.0 2120.2 View list
13 163027064 Nel, A (Andre) 1 1.0 1 0 0 100.0 1672.2 425.0 2097.2 View list
14 107092639 Simpson, M (Michael) 1 1.0 1 0 0 100.0 1639.9 425.0 2064.9 View list
15 172035522 Snijders, K (Kees) 1 1.0 1 0 0 100.0 1639.9 425.0 2064.9 View list
16 197042228 Vreken, J (Jandre) 1 1.0 1 0 0 100.0 1675.5 425.0 2100.5 View list
17 110086011 Felix, R (Raphael) 1 0.5 0 1 0 50.0 1663.2 0.0 1663.2 View list
18 105059134 De Swardt, E (Eduan) 1 0.5 0 1 0 50.0 1672.2 0.0 1672.2 View list
19 103092822 Booi, N (Nande) 1 0.5 0 1 0 50.0 1667.1 0.0 1667.1 View list
20 188012841 Hoole, CG (Christian) 1 0.5 0 1 0 50.0 1675.5 0.0 1675.5 View list