Player Page

Coertzen, J (Janco)
Dob: 2010/09/23 (U16)
Gender: Male
Chess SA id: 1100160139
FIDE id:
Region: Mangaung (FMB)
Citizen: RSA
Title(s):
Last active: 2024/05/05 (201 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 rating1212.3
Current Weighted rating1209.3
Current Weighted performance1074.7
Current official/published rating (highest between Raw, WR and WP)1212.3
Current highest rating achieved1228.9
Current floor (min rating allowed)728.9
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)±162.9
Current Raw change used (final)0.0
Projected new Raw rating1212.3
Projected new Weighed rating1112.7
Projected new Weighted performance1074.7
Projected new final Raw rating (if new WP > new Raw)1212.3
Projected new highest rating1228.9
Projected new floor728.9
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1212.3
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 rating1216.2
Current Weighted rating1207.0
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1216.2
Current highest rating achieved1216.2
Current floor (min rating allowed)716.2
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)±162.0
Current Raw change used (final)0.0
Projected new Raw rating1216.2
Projected new Weighed rating1110.6
Projected new Weighted performance393.4
Projected new final Raw rating (if new WP > new Raw)1216.2
Projected new highest rating1216.2
Projected new floor716.2
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1216.2
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 rating1210.4
Current Weighted rating1214.2
Current Weighted performance1087.9
Current official/published rating (highest between Raw, WR and WP)1214.2
Current highest rating achieved1266.6
Current floor (min rating allowed)766.6
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)±163.4
Current Raw change used (final)0.0
Projected new Raw rating1210.4
Projected new Weighed rating1117.3
Projected new Weighted performance1087.9
Projected new final Raw rating (if new WP > new Raw)1210.4
Projected new highest rating1266.6
Projected new floor766.6
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1210.4
Projected effective change (new Official - current Official)-3.8
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 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
Did not participate this month.
#TournamentStartEndHostTypeTimeWeightRnsGmsScrMainTypeAnalysis
5 Spartan Bishops Chess Championships 2024 (Knights) 2024/05/04 2024/05/05 Bojanala Platina (NBR) Standard 60 0.83 5 5 2.0 1199.2 1200.0 Analysis
4 Mangaung Metro Chess 9 March 2024 (B) 2024/03/09 2024/03/09 Mangaung (FMB) Rapid 32 0.63 5 5 1.0 1228.9 1266.6 Analysis
3 Bloemfontein Highschool League 2024 (U15A) 2024/03/08 2024/03/08 Mangaung (FMB) Rapid 15 0.39 5 5 3.5 1228.9 1266.6 Analysis
2 Bloemfontein High School League 16 February 2024 (U15A) 2024/02/16 2024/02/16 Mangaung (FMB) Rapid 15 0.39 5 5 4.0 1209.0 1217.6 Analysis
1 Mangaung Metro Chess 10 February 2024 (B) 2024/02/10 2024/02/10 Mangaung (FMB) Rapid 32 0.63 5 5 2.5 1209.0 1217.6 Analysis
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
6 Spartan Bishops Chess Championships 2024 (Knights) 2024/05/04 2024/05/05 Bojanala Platina (NBR) Standard 60 0.83 5 5 2.0 1199.2 1200.0 Analysis
5 Mangaung Metro Chess 9 March 2024 (B) 2024/03/09 2024/03/09 Mangaung (FMB) Rapid 32 0.63 5 5 1.0 1228.9 1266.6 Analysis
4 Bloemfontein Highschool League 2024 (U15A) 2024/03/08 2024/03/08 Mangaung (FMB) Rapid 15 0.39 5 5 3.5 1228.9 1266.6 Analysis
3 Bloemfontein High School League 16 February 2024 (U15A) 2024/02/16 2024/02/16 Mangaung (FMB) Rapid 15 0.39 5 5 4.0 1209.0 1217.6 Analysis
2 Mangaung Metro Chess 10 February 2024 (B) 2024/02/10 2024/02/10 Mangaung (FMB) Rapid 32 0.63 5 5 2.5 1209.0 1217.6 Analysis
1 August Primary School Chess Festival 2023 (Grade 6+7 A) 2023/08/04 2023/08/04 Mangaung (FMB) Rapid 15 0.39 5 5 3.0 1200.0 1200.0 Analysis
Game History
Colour Games Wins Draws Losses Score % Dp Aor Perform
Main All 25 12 2 11 13.0 52.0 17.0 1221.8 1238.8
White 12 7 0 5 7.0 58.3 70.8 1213.6 1284.5
Black 13 5 2 6 6.0 46.2 -32.7 1229.4 1196.7
Standard All 5 2 0 3 2.0 40.0 -85.0 1352.3 1267.3
White 2 2 0 0 2.0 100.0 425.0 1216.3 1641.3
Black 3 0 0 3 0.0 0.0 -425.0 1443.0 1018.0
Rapid All 20 10 2 8 11.0 55.0 42.5 1189.2 1231.7
White 10 5 0 5 5.0 50.0 0.0 1213.1 1213.1
Black 10 5 2 3 6.0 60.0 85.0 1165.3 1250.3
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 30 15 2 13 16.0 53.3 28.3 1221.3 1249.6
White 14 8 0 6 8.0 57.1 60.7 1209.6 1270.3
Black 16 7 2 7 8.0 50.0 0.0 1231.5 1231.5
Standard All 5 2 0 3 2.0 40.0 -85.0 1352.3 1267.3
White 2 2 0 0 2.0 100.0 425.0 1216.3 1641.3
Black 3 0 0 3 0.0 0.0 -425.0 1443.0 1018.0
Rapid All 25 13 2 10 14.0 56.0 51.0 1195.1 1246.1
White 12 6 0 6 6.0 50.0 0.0 1208.5 1208.5
Black 13 7 2 4 8.0 61.5 98.1 1182.7 1280.8
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
Top 20 opponents most often played
#Chess SA idNameGamesScoreWinsDrawsLosses%AorDpPerformView
1 1100191950 Mohomed, E (Esa) 2 2.0 2 0 0 100.0 1209.0 425.0 1634.0 View list
2 1100160163 Mitchell, T (Thomas) 2 1.0 1 0 1 50.0 1228.9 0.0 1228.9 View list
3 1110145473 Mokhachane, K (Kgalalelo) 1 1.0 1 0 0 100.0 1209.0 425.0 1634.0 View list
4 2110160141 De Gouveia, O (Oriana) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
5 1090131402 Fumba, B (Babalo) 1 1.0 1 0 0 100.0 1228.9 425.0 1653.9 View list
6 1100191989 Mabule, B (Botshelo) 1 1.0 1 0 0 100.0 1228.9 425.0 1653.9 View list
7 1120160145 Guvuriro, A (Akudzwe) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
8 1100103072 Ngowi, L (Leo) 1 1.0 1 0 0 100.0 1209.0 425.0 1634.0 View list
9 2110136768 Monare, O (Oratilwe) 1 1.0 1 0 0 100.0 1199.2 425.0 1624.2 View list
10 2140147074 Monaheng, P (Poloko) 1 1.0 1 0 0 100.0 1209.0 425.0 1634.0 View list
11 1110100910 Streicher, C (Calla) 1 1.0 1 0 0 100.0 1200.0 425.0 1625.0 View list
12 1100303189 Tladi, O (Ofentse) 1 1.0 1 0 0 100.0 1199.2 425.0 1624.2 View list
13 1090112367 Van Rooyen, CG (Conrad Gerhard) 1 1.0 1 0 0 100.0 1209.0 425.0 1634.0 View list
14 2090191576 Visser, M (Micayla) 1 1.0 1 0 0 100.0 1228.9 425.0 1653.9 View list
15 1130147073 Moletsane, T (Tshimologo) 1 0.5 0 1 0 50.0 1228.9 0.0 1228.9 View list
16 1080191958 Snydert, S (Stefan) 1 0.5 0 1 0 50.0 1209.0 0.0 1209.0 View list
17 1090108376 Palesa, O (Oratilwe) 1 0.0 0 0 1 0.0 1209.0 -425.0 784.0 View list
18 1090134116 Mohobane, L (Lebajoa) 1 0.0 0 0 1 0.0 1228.9 -425.0 803.9 View list
19 108069747 Melville, J (Jason) 1 0.0 0 0 1 0.0 1209.0 -425.0 784.0 View list
20 1100160144 Grobler, W (Wilan) 1 0.0 0 0 1 0.0 1200.0 -425.0 775.0 View list