Player Page

Van Zyl, JM (Johannes Martin)
Dob: 1943/10/07 (Adult)
Gender: Male
Chess SA id: 1430106795
FIDE id:
Region: Cape Town (WCT)
Citizen: RSA
Title(s):
Last active: 2023/09/09 (370 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 rating1240.8
Current Weighted rating1244.5
Current Weighted performance478.1
Current official/published rating (highest between Raw, WR and WP)1244.5
Current highest rating achieved1276.0
Current floor (min rating allowed)776.0
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)±156.5
Current Raw change used (final)0.0
Projected new Raw rating1240.8
Projected new Weighed rating1144.6
Projected new Weighted performance478.1
Projected new final Raw rating (if new WP > new Raw)1240.8
Projected new highest rating1276.0
Projected new floor776.0
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1240.8
Projected effective change (new Official - current Official)-3.7
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 rating1242.1
Current Weighted rating1246.2
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1246.2
Current highest rating achieved1281.4
Current floor (min rating allowed)781.4
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)±156.2
Current Raw change used (final)0.0
Projected new Raw rating1242.1
Projected new Weighed rating1146.2
Projected new Weighted performance454.6
Projected new final Raw rating (if new WP > new Raw)1242.1
Projected new highest rating1281.4
Projected new floor781.4
Projected new K-facor36
Projected new official/published rating (highest between new Raw, new WR and new WP)1242.1
Projected effective change (new Official - current Official)-4.1
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 rating1168.1
Current Weighted rating1168.1
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1168.1
Current highest rating achieved1168.5
Current floor (min rating allowed)668.5
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)±173.5
Current Raw change used (final)0.0
Projected new Raw rating1168.1
Projected new Weighed rating1074.7
Projected new Weighted performance214.9
Projected new final Raw rating (if new WP > new Raw)1168.1
Projected new highest rating1168.5
Projected new floor668.5
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1168.1
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 rating1090.9
Current Weighted rating1090.9
Current Weighted performance
Current official/published rating (highest between Raw, WR and WP)1090.9
Current highest rating achieved1090.9
Current floor (min rating allowed)590.9
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)±193.7
Current Raw change used (final)0.0
Projected new Raw rating1090.9
Projected new Weighed rating1003.6
Projected new Weighted performance
Projected new final Raw rating (if new WP > new Raw)
Projected new highest rating1090.9
Projected new floor590.9
Projected new K-facor40
Projected new official/published rating (highest between new Raw, new WR and new WP)1090.9
Projected effective change (new Official - current Official)=0.0
Tournaments
Did not participate this month.
Did not participate this year.
#TournamentStartEndHostTypeTimeWeightRoundsGamesScoreMainTypeAnalysis
9 WP Club League 2023 (C) 2023/07/29 2023/09/09 Cape Town (WCT) Standard 120 1.00 11 5 2.0 1257.7 1260.8 Analysis
8 2020 Western Province Open (Prestige) 2020/03/07 2020/03/08 Cape Town (WCT) Standard 70 0.87 6 6 3.5 1217.0 1219.8 Analysis
7 2019 Western Province League (C) 2019/07/27 2019/09/07 Cape Town (WCT) Standard 120 1.00 11 5 1.0 1276.0 1281.4 Analysis
6 2019 Western Province League (E) 2019/07/27 2019/08/10 Cape Town (WCT) Standard 60 0.83 9 2 2.0 1254.2 1256.9 Analysis
5 2019 Western Province Open (Open) 2019/05/25 2019/05/26 Cape Town (WCT) Standard 70 0.87 6 6 4.0 1237.3 1235.3 Analysis
4 Steinitz Chess Festival 2019 (B) 2019/04/05 2019/04/07 Cape Town (WCT) Standard 70 0.87 6 6 3.0 1204.1 1190.5 Analysis
3 2019 Cape Town Classic Chess Festival (Rapid) 2019/03/30 2019/03/30 Cape Town (WCT) Rapid 20 0.47 7 6 2.0 1206.3 1168.5 Analysis
2 Jakes Gerwel Aurecon 2018 (C) 2018/10/13 2018/10/13 Cape Town (WCT) Rapid 25 0.54 7 7 5.5 1184.5 1090.9 Analysis
1 2018 Western Province League (C) 2018/08/04 2018/09/15 Cape Town (WCT) Standard 90 0.94 11 8 5.0 1090.9 1090.9 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 51 26 4 21 28.0 54.9 41.7 1241.7 1283.4
White 23 11 3 9 12.5 54.3 37.0 1203.2 1240.2
Black 28 15 1 12 15.5 55.4 45.5 1273.3 1318.8
Standard All 38 19 3 16 20.5 53.9 33.6 1263.9 1297.4
White 17 8 2 7 9.0 52.9 25.0 1242.9 1267.9
Black 21 11 1 9 11.5 54.8 40.5 1280.8 1321.3
Rapid All 13 7 1 5 7.5 57.7 65.4 1176.9 1242.3
White 6 3 1 2 3.5 58.3 70.8 1090.7 1161.5
Black 7 4 0 3 4.0 57.1 60.7 1250.8 1311.5
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 2030112748 Hlophe, M (Melissa) 2 2.0 2 0 0 100.0 1221.8 425.0 1646.8 View list
2 207090606 Gcuze, K (Khanya) 2 2.0 2 0 0 100.0 1210.9 425.0 1635.9 View list
3 2000056152 Ariefdien, D (Dominique) 2 1.0 1 0 1 50.0 1164.1 0.0 1164.1 View list
4 208088218 Mackintosh, M (Michaella) 2 1.0 1 0 1 50.0 1210.5 0.0 1210.5 View list
5 104051728 Muller, EA (Euan A) 2 0.5 0 1 1 25.0 1210.5 -212.5 998.0 View list
6 108092067 Imrie, D (Daniel) 1 1.0 1 0 0 100.0 1276.0 425.0 1701.0 View list
7 1040130513 Gukuta, N (Nyasha) 1 1.0 1 0 0 100.0 1217.0 425.0 1642.0 View list
8 1070103483 Jali, H (Hlumelo) 1 1.0 1 0 0 100.0 1254.2 425.0 1679.2 View list
9 106088146 Allie, AD (Abdu Dayaan) 1 1.0 1 0 0 100.0 1184.5 425.0 1609.5 View list
10 1050138906 Adonis, J (Jaydon) 1 1.0 1 0 0 100.0 1217.0 425.0 1642.0 View list
11 100072662 Blows, B (Bev) 1 1.0 1 0 0 100.0 1090.9 425.0 1515.9 View list
12 1910106788 Bello, O (Oluwaseyi) 1 1.0 1 0 0 100.0 1184.5 425.0 1609.5 View list
13 1760106183 Botes, R (Renier) 1 1.0 1 0 0 100.0 1090.9 425.0 1515.9 View list
14 205078542 Cloete, R (Roberta) 1 1.0 1 0 0 100.0 1184.5 425.0 1609.5 View list
15 2100109060 Makhasi, A (Athule) 1 1.0 1 0 0 100.0 1237.3 425.0 1662.3 View list
16 2090106253 Mlahleni, O (Okuhle) 1 1.0 1 0 0 100.0 1237.3 425.0 1662.3 View list
17 2050096404 Mqikela, K (Kamvalethu) 1 1.0 1 0 0 100.0 1204.1 425.0 1629.1 View list
18 169026725 Natus, AS (Arthur) 1 1.0 1 0 0 100.0 1257.7 425.0 1682.7 View list
19 1060108804 Ntukela, A (Amzolele) 1 1.0 1 0 0 100.0 1217.0 425.0 1642.0 View list
20 1060111426 Rahim, T (Taha) 1 1.0 1 0 0 100.0 1206.3 425.0 1631.3 View list