Player Page

Purchase, N (Nathan)
Dob: 2010/02/27 (U16)
Gender: Male
Chess SA id: 1100306870
FIDE id:
Region: Johannesburg Metro (GJM)
Citizen: RSA
Title(s):
Last active: 2024/10/26 (47 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 rating1162.0
Current Weighted rating1191.8
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1191.8
Current highest rating achieved1198.0
Current floor (min rating allowed)698.0
Current K-factor40
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)±175.0
Current Raw change used (final)0.0
Projected new Raw rating1162.0
Projected new Weighed rating1096.1
Projected new Weighted performance1011.4
Projected new final Raw rating (if new WP > new Raw)1162.0
Projected new highest rating1198.0
Projected new floor698.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1162.0
Projected effective change (new Official - current Official)-29.8
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 rating1166.0
Current Weighted rating1191.4
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1191.4
Current highest rating achieved1194.0
Current floor (min rating allowed)694.0
Current K-factor40
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)±174.0
Current Raw change used (final)0.0
Projected new Raw rating1166.0
Projected new Weighed rating1095.7
Projected new Weighted performance885.8
Projected new final Raw rating (if new WP > new Raw)1166.0
Projected new highest rating1194.0
Projected new floor694.0
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1166.0
Projected effective change (new Official - current Official)-25.4
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 rating1149.2
Current Weighted rating1192.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1192.0
Current highest rating achieved1149.2
Current floor (min rating allowed)649.2
Current K-factor40
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)±178.3
Current Raw change used (final)0.0
Projected new Raw rating1149.2
Projected new Weighed rating1096.4
Projected new Weighted performance365.6
Projected new final Raw rating (if new WP > new Raw)1149.2
Projected new highest rating1149.2
Projected new floor649.2
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1149.2
Projected effective change (new Official - current Official)-42.8
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 rating1200.0
Current Weighted rating1200.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1200.0
Current highest rating achieved0.0
Current floor (min rating allowed)700.0
Current K-factor40
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 rating0.0
Projected new floor700.0
Projected new K-facor40
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
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
4 Mzansi Summer Rapid 2024 (B) 2024/10/26 2024/10/26 Johannesburg Metro (GJM) Rapid 25 0.54 6 6 2.0 1172.8 1200.0 Analysis
3 Knight Riders Spring Chess Tournament 2024 (B) 2024/09/28 2024/09/28 Johannesburg Metro (GJM) Standard 60 0.83 5 4 1.0 1198.0 1194.0 Analysis
2 Mzansi Spring Open 2024 (Juniors) 2024/09/07 2024/09/07 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1198.0 1194.0 Analysis
1 Chess Power House July Open 2024 (B) 2024/07/20 2024/07/20 Johannesburg Metro (GJM) Standard 60 0.83 5 4 2.0 1200.0 1200.0 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
4 Mzansi Summer Rapid 2024 (B) 2024/10/26 2024/10/26 Johannesburg Metro (GJM) Rapid 25 0.54 6 6 2.0 1172.8 1200.0 Analysis
3 Knight Riders Spring Chess Tournament 2024 (B) 2024/09/28 2024/09/28 Johannesburg Metro (GJM) Standard 60 0.83 5 4 1.0 1198.0 1194.0 Analysis
2 Mzansi Spring Open 2024 (Juniors) 2024/09/07 2024/09/07 Johannesburg Metro (GJM) Standard 60 0.83 5 5 2.0 1198.0 1194.0 Analysis
1 Chess Power House July Open 2024 (B) 2024/07/20 2024/07/20 Johannesburg Metro (GJM) Standard 60 0.83 5 4 2.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 19 7 0 12 7.0 36.8 -111.8 1250.0 1138.1
White 11 5 0 6 5.0 45.5 -38.6 1233.6 1195.0
Black 8 2 0 6 2.0 25.0 -212.5 1272.5 1060.0
Standard All 13 5 0 8 5.0 38.5 -98.1 1247.0 1148.9
White 7 4 0 3 4.0 57.1 60.7 1219.6 1280.3
Black 6 1 0 5 1.0 16.7 -283.3 1279.0 995.7
Rapid All 6 2 0 4 2.0 33.3 -141.7 1256.5 1114.8
White 4 1 0 3 1.0 25.0 -212.5 1258.2 1045.7
Black 2 1 0 1 1.0 50.0 0.0 1253.0 1253.0
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 19 7 0 12 7.0 36.8 -111.8 1250.0 1138.1
White 11 5 0 6 5.0 45.5 -38.6 1233.6 1195.0
Black 8 2 0 6 2.0 25.0 -212.5 1272.5 1060.0
Standard All 13 5 0 8 5.0 38.5 -98.1 1247.0 1148.9
White 7 4 0 3 4.0 57.1 60.7 1219.6 1280.3
Black 6 1 0 5 1.0 16.7 -283.3 1279.0 995.7
Rapid All 6 2 0 4 2.0 33.3 -141.7 1256.5 1114.8
White 4 1 0 3 1.0 25.0 -212.5 1258.2 1045.7
Black 2 1 0 1 1.0 50.0 0.0 1253.0 1253.0
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 2100304122 Simamane, S (Siphokazi) 2 2.0 2 0 0 100.0 1199.0 425.0 1624.0 View list
2 297092481 Maimane, B (Bonolo) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
3 1160304129 Kuchibhotla, AKA (Achyuta Kartikeya Arjun) 1 1.0 1 0 0 100.0 1198.0 425.0 1623.0 View list
4 2120306873 Purchase, C (Claire) 1 1.0 1 0 0 100.0 1198.0 425.0 1623.0 View list
5 1110135545 Mohonwe, LK (Lebone Kgosi) 1 1.0 1 0 0 100.0 1172.8 425.0 1597.8 View list
6 2130306871 Cheetham, G (Georgia) 1 1.0 1 0 0 100.0 1172.8 425.0 1597.8 View list
7 1140148614 Subroyen, J (Jeevesh) 1 0.0 0 0 1 0.0 1198.0 -425.0 773.0 View list
8 1130132184 Smith, C (Caleb) 1 0.0 0 0 1 0.0 1172.8 -425.0 747.8 View list
9 1060191365 Sebongwane, N (Nkosana) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
10 1130300249 Mankena, S (Satvik Ram) 1 0.0 0 0 1 0.0 1198.0 -425.0 773.0 View list
11 1120143689 Makoto, R (Rj) 1 0.0 0 0 1 0.0 1198.0 -425.0 773.0 View list
12 181076100 Potgieter, ST (St) 1 0.0 0 0 1 0.0 1172.8 -425.0 747.8 View list
13 1100148730 Nkabinde, L (Lwazi) 1 0.0 0 0 1 0.0 1198.0 -425.0 773.0 View list
14 2100145853 Ngwangwa, N (Nonhlanhla) 1 0.0 0 0 1 0.0 1198.0 -425.0 773.0 View list
15 1090307381 Naidoo, K (Kayden) 1 0.0 0 0 1 0.0 1172.8 -425.0 747.8 View list
16 1080155553 Moyo, B (Bonginkosi) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list
17 1080192102 Hattingh, C (Christiaan) 1 0.0 0 0 1 0.0 1198.0 -425.0 773.0 View list
18 1090157299 Daley, S (Sebastian) 1 0.0 0 0 1 0.0 1172.8 -425.0 747.8 View list