Player Page

Jacobs, GJ (Gerhard)
Dob: 1977/05/05 (Adult)
Gender: Male
Chess SA id: 177086357
FIDE id:
Region: Tshwane (GTP)
Citizen: RSA
Title(s):
Last active: 2024/08/18 (58 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 rating1464.6
Current Weighted rating1383.3
Current Weighted performance1451.4
Current official/published rating (highest between Raw, WR and WP)1464.6
Current highest rating achieved1464.6
Current floor (min rating allowed)964.6
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)±113.7
Current Raw change used (final)0.0
Projected new Raw rating1464.6
Projected new Weighed rating1273.8
Projected new Weighted performance1451.4
Projected new final Raw rating (if new WP > new Raw)1464.6
Projected new highest rating1464.6
Projected new floor964.6
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1464.6
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 rating1468.4
Current Weighted rating1377.1
Current Weighted performance1456.3
Current official/published rating (highest between Raw, WR and WP)1468.4
Current highest rating achieved1468.4
Current floor (min rating allowed)968.4
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)±113.1
Current Raw change used (final)0.0
Projected new Raw rating1468.4
Projected new Weighed rating1268.2
Projected new Weighted performance1456.3
Projected new final Raw rating (if new WP > new Raw)1468.4
Projected new highest rating1468.4
Projected new floor968.4
Projected new K-facor32
Projected new official/published rating (highest between new Raw, new WR and new WP)1468.4
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 rating1315.3
Current Weighted rating1316.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1316.8
Current highest rating achieved1321.1
Current floor (min rating allowed)821.1
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)±140.7
Current Raw change used (final)0.0
Projected new Raw rating1315.3
Projected new Weighed rating1211.4
Projected new Weighted performance761.2
Projected new final Raw rating (if new WP > new Raw)1315.3
Projected new highest rating1321.1
Projected new floor821.1
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1315.3
Projected effective change (new Official - current Official)-1.5
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 rating1302.7
Current Weighted rating1254.8
Current Weighted performance1303.6
Current official/published rating (highest between Raw, WR and WP)1303.6
Current highest rating achieved1361.4
Current floor (min rating allowed)861.4
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)±143.2
Current Raw change used (final)0.0
Projected new Raw rating1302.7
Projected new Weighed rating1156.2
Projected new Weighted performance1303.6
Projected new final Raw rating (if new WP > new Raw)1303.6
Projected new highest rating1361.4
Projected new floor861.4
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1303.6
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
6 Bojanala's FIDE In The Sparkling Waters 2024 (Rooks) 2024/08/16 2024/08/18 Bojanala Platina (NBR) Standard 120 1.00 6 6 5.0 1400.7 1396.1 Analysis
5 Eureka Open 27 July 2024 (C) 2024/07/27 2024/07/27 Sedibeng (GSV) Standard 60 0.83 5 5 3.0 1386.4 1378.1 Analysis
4 2024 Midstream College Open Chess Tournament (B1) 2024/07/20 2024/07/20 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1386.4 1378.1 Analysis
3 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (C) 2024/06/01 2024/06/01 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1375.1 1369.8 Analysis
2 2024 Tshwane Chess FIDE RATED Blitz League Championship 1 2024/05/26 2024/05/26 Tshwane (GTP) Blitz 5 0.18 9 9 5.0 1375.1 1270.7 Analysis
1 2024 Centurion Club Closed Chess Tournament (A) 2024/05/25 2024/05/25 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1370.9 1362.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
33 Bojanala's FIDE In The Sparkling Waters 2024 (Rooks) 2024/08/16 2024/08/18 Bojanala Platina (NBR) Standard 120 1.00 6 6 5.0 1400.7 1396.1 Analysis
32 Eureka Open 27 July 2024 (C) 2024/07/27 2024/07/27 Sedibeng (GSV) Standard 60 0.83 5 5 3.0 1386.4 1378.1 Analysis
31 2024 Midstream College Open Chess Tournament (B1) 2024/07/20 2024/07/20 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1386.4 1378.1 Analysis
30 2024 Johannes Mabusela's 40th Birthday Chess Tournament F Section (C) 2024/06/01 2024/06/01 Tshwane (GTP) Standard 60 0.83 5 5 3.0 1375.1 1369.8 Analysis
29 2024 Tshwane Chess FIDE RATED Blitz League Championship 1 2024/05/26 2024/05/26 Tshwane (GTP) Blitz 5 0.18 9 9 5.0 1375.1 1270.7 Analysis
28 2024 Centurion Club Closed Chess Tournament (A) 2024/05/25 2024/05/25 Tshwane (GTP) Standard 60 0.83 5 5 2.0 1370.9 1362.6 Analysis
27 CCC Blitz All 2023 2023/12/06 2023/12/06 Tshwane (GTP) Blitz 5 0.18 9 9 6.0 1362.2 1198.3 Analysis
26 CCC Midstream Rapid 2023 2023/11/27 2023/11/27 Tshwane (GTP) Rapid 15 0.39 5 5 3.0 1368.2 1321.1 Analysis
25 Tshwane Chess Arbiter Norm Blitz Tournament 2023 2023/10/29 2023/10/29 Tshwane (GTP) Blitz 5 0.18 11 11 7.0 1361.2 1176.7 Analysis
24 2023 Centurion Club Championships 2023/07/19 2023/09/06 Tshwane (GTP) Standard 60 0.83 6 6 4.0 1346.9 1334.5 Analysis
23 Tshwane Chess FIDE Rated Blitz League 3 2023 2023/07/16 2023/07/16 Tshwane (GTP) Blitz 5 0.18 9 9 4.5 1338.5 1168.8 Analysis
22 2023 Tshwane Chess FIDE Rated Blitz League 2 2023/06/11 2023/06/11 Tshwane (GTP) Blitz 5 0.18 9 9 4.0 1339.0 1159.1 Analysis
21 2023 Tshwane Chess FIDE Rated Blitz League 1 2023/05/28 2023/05/28 Tshwane (GTP) Blitz 5 0.18 9 9 4.0 1344.5 1203.4 Analysis
20 2022 Centurion Club Blitz 2022/11/30 2022/11/30 Tshwane (GTP) Blitz 5 0.18 9 9 4.0 1336.5 1204.1 Analysis
19 CPH Chess Clubs Challenge 2022 (B) 2022/11/12 2022/11/12 Johannesburg Metro (GJM) Rapid 20 0.47 6 6 4.0 1336.5 1286.2 Analysis
18 2022 Centurion Club Championships 2022/05/11 2022/06/22 Tshwane (GTP) Standard 60 0.83 6 4 1.0 1353.2 1354.7 Analysis
17 Rachella`s Cafe Blitz Tournament 1 2022 2022/03/20 2022/03/20 Tshwane (GTP) Blitz 5 0.18 9 9 3.0 1358.6 1231.1 Analysis
16 2021 CCC Inhouse Blitz (A) 2021/11/24 2021/11/24 Tshwane (GTP) Blitz 5 0.18 7 7 2.0 1394.0 1267.8 Analysis
15 2021 CCC Inhouse (A) 2021/10/20 2021/11/17 Tshwane (GTP) Standard 60 0.83 5 5 1.0 1394.0 1392.5 Analysis
14 2020 CC Annual Opener 2020/01/29 2020/03/11 Tshwane (GTP) Standard 60 0.83 6 5 3.0 1375.0 1371.1 Analysis
12
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 35 21 0 14 21.0 60.0 85.0 1380.3 1465.3
White 15 11 0 4 11.0 73.3 198.3 1396.1 1594.4
Black 20 10 0 10 10.0 50.0 0.0 1368.5 1368.5
Standard All 26 16 0 10 16.0 61.5 98.1 1370.5 1468.6
White 11 9 0 2 9.0 81.8 270.5 1331.5 1601.9
Black 15 7 0 8 7.0 46.7 -28.3 1399.2 1370.8
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 9 5 0 4 5.0 55.6 47.2 1408.6 1455.8
White 4 2 0 2 2.0 50.0 0.0 1573.8 1573.8
Black 5 3 0 2 3.0 60.0 85.0 1276.5 1361.5
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 218 107 4 107 109.0 50.0 0.0 1367.0 1367.0
White 106 55 1 50 55.5 52.4 20.0 1360.8 1380.8
Black 112 52 3 57 53.5 47.8 -19.0 1372.9 1353.9
Standard All 99 50 3 46 51.5 52.0 17.2 1349.6 1366.8
White 50 24 1 25 24.5 49.0 -8.5 1353.9 1345.4
Black 49 26 2 21 27.0 55.1 43.4 1345.3 1388.7
Rapid All 21 12 0 9 12.0 57.1 60.7 1319.2 1379.9
White 10 5 0 5 5.0 50.0 0.0 1384.8 1384.8
Black 11 7 0 4 7.0 63.6 115.9 1259.6 1375.5
Blitz All 98 45 1 52 45.5 46.4 -30.4 1394.8 1364.5
White 46 26 0 20 26.0 56.5 55.4 1363.1 1418.5
Black 52 19 1 32 19.5 37.5 -106.3 1422.9 1316.7
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 194030356 Pillay, N (Nico) 4 1.0 1 0 3 25.0 1348.2 -212.5 1135.7 View list
2 175033667 Schutte, R (Rico) 4 0.0 0 0 4 0.0 1349.9 -425.0 924.9 View list
3 1130140475 Van Der Westhuizen, L (Lihan) 3 3.0 3 0 0 100.0 1360.3 425.0 1785.3 View list
4 163040277 Van Rensburg, B (Ben) 3 3.0 3 0 0 100.0 1332.0 425.0 1757.0 View list
5 193020018 Malan, A (Aiden) 3 1.0 1 0 2 33.3 1368.5 -141.7 1226.8 View list
6 102027765 Nieuwoudt, H (Hanno) 3 1.0 1 0 2 33.3 1314.1 -141.7 1172.4 View list
7 186029353 Pape, Z (Zane) 3 1.0 1 0 2 33.3 1367.1 -141.7 1225.5 View list
8 109086379 Jacobs, CN (Calvin Nicholas) 3 0.0 0 0 3 0.0 1357.8 -425.0 932.8 View list
9 177017896 Letsoalo, PM (Peter) 3 0.0 0 0 3 0.0 1325.4 -425.0 900.4 View list
10 184027327 Nene, TH (Themba) 3 0.0 0 0 3 0.0 1347.7 -425.0 922.7 View list
11 2110103926 Jacobs, AE (Alyssa) 2 2.0 2 0 0 100.0 1357.7 425.0 1782.7 View list
12 1000162047 Maphalala, A (Andile) 2 2.0 2 0 0 100.0 1354.6 425.0 1779.6 View list
13 1020190893 Muller, A (Arend) 2 2.0 2 0 0 100.0 1377.3 425.0 1802.3 View list
14 1700148038 Pretorius, F (Frik) 2 2.0 2 0 0 100.0 1353.7 425.0 1778.7 View list
15 1070153444 Ballim, S (Salif) 2 1.0 1 0 1 50.0 1338.8 0.0 1338.8 View list
16 103004868 Claassen, J (Jean-Daniel) 2 1.0 1 0 1 50.0 1339.8 0.0 1339.8 View list
17 1090134032 De Roos, H (Hubert) 2 1.0 1 0 1 50.0 1341.8 0.0 1341.8 View list
18 107046393 Fourie, K (Keanan) 2 1.0 1 0 1 50.0 1290.5 0.0 1290.5 View list
19 208088604 Monnig, E (Erika) 2 1.0 1 0 1 50.0 1295.9 0.0 1295.9 View list
20 185030022 Phiri, J (Justice) 2 1.0 1 0 1 50.0 1394.0 0.0 1394.0 View list