< September 30, 1989     Back to date list    November 30, 1989 >

Top 10 active players as of October 31, 1989


Top 500 active players as of October 31, 1989

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28344867.1% #226.55
2 Karpov, Anatoly E27914723.6% #338.44
3 Timman, Jan H2727482.5% #1537.88
4 Short, Nigel D2712471.2% #2024.41
5 Ivanchuk, Vassily2707491.1% #2220.62
6 Salov, Valery B2701501.0% #2625.43
7 Beliavsky, Alexander G2696480.6% #2835.87
8 Korchnoi, Viktor L2690470.4% #3158.61
9 Gurevich, Mikhail N2679490.3% #3930.69
10 Dautov, Rustem2669520.3% #4823.92
11 Hübner, Robert2668490.1% #4740.98
12 Andersson, Ulf2668480.1% #4838.34
13 Portisch, Lajos2668480.2% #4852.57
14 Dolmatov, Sergey V2666490.1% #5030.70
15 Speelman, Jonathan S2664480.1% #5033.08
16 Gelfand, Boris2662490.1% #5221.35
17 Polugaevsky, Lev A2661500.1% #5554.94
18 Ljubojevic, Ljubomir2659480.1% #5538.99
19 Yudasin, Leonid G2656500.1% #5930.23
20 Azmaiparashvili, Zurab A2655510.1% #6029.62
21 Dreev, Alexey2655490.1% #5920.78
22 Ehlvest, Jaan2653480.1% #6027.05
23 Jussupow, Artur M265248 #6229.72
24 Tal, Mikhail264848 #6552.97
25 Tukmakov, Vladimir B2645490.1% #6943.63
26 Ribli, Zoltán264448 #7038.15
27 Chernin, Alexander M264448 #7029.65
28 Nikolic, Predrag264248 #7129.14
29 Vaganian, Rafael A264148 #7238.04
30 Vladimirov, Evgeny Y2639530.1% #7832.78
31 Gulko, Boris F263749 #7742.73
32 Georgiev, Kiril263449 #8123.92
33 Sveshnikov, Evgeny E263453 #8339.72
34 Agdestein, Simen263350 #8222.46
35 Christiansen, Larry M263349 #8233.34
36 Lputian, Smbat G263349 #8131.71
37 Nunn, John D M263248 #8134.52
38 Gavrikov, Victor N263149 #8432.26
39 Dvoiris, Semen I263052 #8730.99
40 Vyzmanavin, Alexey262952 #8829.83
41 Yurtaev, Leonid262852 #8830.50
42 Khalifman, Alexander262549 #9023.79
43 Timoshchenko, Gennady262250 #9440.51
44 Seirawan, Yasser262048 #9529.60
45 Ubilava, Elizbar E261753 #10239.18
46 Bareev, Evgeny261751 #10022.94
47 Sax, Gyula261648 #9938.37
48 Dorfman, Iosif D261451 #10537.50
49 Aseev, Konstantin N261352 #10529.03
50 Eingorn, Viacheslav S261349 #10432.93
51 Anand, Viswanathan261351 #10519.89
52 Ionov, Sergey261259 #11427.81
53 Psakhis, Lev B261248 #10430.92
54 Sokolov, Andrey Y261049 #10726.61
55 Pigusov, Evgeny260951 #11028.58
56 Ivanov, Alexander V260854 #11333.50
57 Spassky, Boris V260749 #11052.75
58 Balashov, Yury S260649 #11240.63
59 Epishin, Vladimir260451 #11524.30
60 Smyslov, Vassily V260351 #11768.60
61 Lerner, Konstantin Z260250 #11739.67
62 Kruppa, Yuri260058 #12525.36
63 Razuvaev, Yury S260051 #12044.06
64 Torre, Eugenio260051 #12037.98
65 deFirmian, Nicholas E260050 #11932.26
66 Dokhoian, Yury259950 #12025.01
67 Smirin, Ilia259950 #12121.78
68 Kuzmin, Gennady P259756 #12843.78
69 Malaniuk, Vladimir P259648 #12232.28
70 Neverov, Valery259552 #12625.36
71 Dzindzichashvili, Roman Y259553 #12745.49
72 Hort, Vlastimil259549 #12445.80
73 Kharitonov, Andrey Y259549 #12530.57
74 Oll, Lembit259549 #12423.52
75 Krasenkow, Michal259051 #13125.96
76 Kveinys, Aloyzas258860 #14027.31
77 Rashkovsky, Nukhim N258751 #13443.54
78 Romanishin, Oleg M258648 #13437.81
79 Rozentalis, Eduardas258550 #13626.43
80 Smagin, Sergey258550 #13631.15
81 Kovalev, Andrei258557 #14127.98
82 Fedorowicz, John P258449 #13631.09
83 Vasiukov, Evgeny A258352 #13956.65
84 Hansen, Curt258349 #13725.12
85 Novikov, Igor A258251 #13927.44
86 Naumkin, Igor258255 #14224.22
87 Taimanov, Mark E258257 #14463.73
88 van der Wiel, John T H258048 #14030.23
89 Nogueiras, Jesus258048 #14030.29
90 Sorokin, Maxim258058 #14621.77
91 Yermolinsky, Alex V258053 #14331.55
92 Miles, Anthony J257948 #14134.52
93 Vaisser, Anatoli257851 #14440.65
94 Kamsky, Gata257854 #14515.41
95 Shirov, Alexei257753 #14617.32
96 Ftácnik, Lubomír257749 #14332.00
97 Podgaets, Mikhail Y2577750.1% #16042.27
98 Pintér, József257651 #14635.97
99 Goldin, Alexander257650 #14524.68
100 Pétursson, Margeir257648 #14429.71
101 Larsen, Bent257549 54.66
102 Hjartarson, Jóhann257448 26.73
103 Benjamin, Joel L257449 25.64
104 Arkhipov, Sergey257157 35.36
105 Olafsson, Helgi257049 33.21
106 Lobron, Eric257049 29.48
107 Sosonko, Gennadi256952 46.45
108 Makarichev, Sergey Y256955 35.95
109 Spraggett, Kevin B256852 34.97
110 Tseshkovsky, Vitaly V256650 45.10
111 Chandler, Murray G256649 29.57
112 Timoshenko, Georgy256655 23.41
113 Ulibin, Mikhail256651 18.42
114 Kholmov, Ratmir D256651 64.47
115 Karlsson, Lars256651 34.30
116 Kuzmin, Alexey256454 26.65
117 Smejkal, Jan256350 43.61
118 Bikhovsky, Avigdor I256368 34.65
119 Adams, Michael256250 17.95
120 Huzman, Alexander256252 27.56
121 Kudrin, Sergey256251 30.15
122 Gorelov, Sergey G256160 32.20
123 Didishko, Vereslav256074 40.56
124 Shabanov, Yury F255968 51.96
125 Akopian, Vladimir255852 17.90
126 Todorcevic, Miodrag255851 48.97
127 Kalinitschew, Sergey255760 33.74
128 Giorgadze, Giorgi255752 25.06
129 Browne, Walter S255752 40.81
130 Khenkin, Igor255755 21.61
131 Petrienko, Vladimir255764 34.64
132 Quinteros, Miguel A255564 41.84
133 Sokolov, Ivan255549 21.38
134 Kavalek, Lubomir255461 46.23
135 Yakovich, Yuri255456 26.92
136 Panchenko, Alexander N255455 36.07
137 Kengis, Edvins255357 30.55
138 Sturua, Zurab255266 30.40
139 Geller, Efim P255150 64.66
140 Hulak, Krunoslav255151 38.43
141 Knaak, Rainer F255150 36.62
142 Morovic Fernández, Iván E255054 26.60
143 Mikhalchishin, Adrian B255049 34.95
144 Kindermann, Stefan255048 29.84
145 Duer, Arne255066 30.31
146 Bönsch, Uwe254950 31.04
147 Tiviakov, Sergei254961 16.71
148 Greenfeld, Alon254852 25.54
149 Kurajica, Bojan254768 41.95
150 Janjgava, Lasha254752 19.49
151 Wahls, Matthias254750 21.76
152 Komarov, Dimitri254758 20.91
153 Glek, Igor V254753 27.98
154 Kramnik, Vladimir254661 14.35
155 Liberzon, Vladimir M254672 52.61
156 Magerramov, Elmar S254654 31.56
157 Dlugy, Maxim254550 23.76
158 Najdorf, Miguel254463 79.54
159 Murey, Yakov254451 48.24
160 Kozlov, V.254461
161 Kaidanov, Gregory S254351 30.05
162 Kiselev, Sergey254358 28.13
163 Shereshevsky, Mikhail I254274 39.53
164 Mestel, A Jonathan254257 32.63
165 Soppe, Guillermo254262 29.12
166 Govedarica, Radovan254171 41.71
167 Lalic, Bogdan254050 25.65
168 Gaprindashvili, Nona254063 48.49
169 Henley, Ron W254072 32.90
170 Chekhov, Valery A254050 33.92
171 Hellers, Ferdinand253951 20.76
172 Popovic, Petar253949 30.71
173 Rogers, Ian253850 29.35
174 Panno, Oscar R253853 54.62
175 Barua, Dibyendu253854 23.01
176 Adorján, András253750 39.58
177 Savchenko, Stanislav253754 22.78
178 Bjelajac, Milan253669 41.63
179 Karpman, Vadim253655 24.47
180 Ninov, Kiril253654 21.06
181 Kupreichik, Viktor D253650 40.33
182 Mnatsakanian, Eduard A253571 50.90
183 Anastasian, Ashot253553 25.29
184 Kovacevic, Vladimir253550 47.60
185 Moskalenko, Viktor253453 28.91
186 Uhlmann, Wolfgang253452 54.59
187 Kochiev, Alexander253453 33.60
188 Suba, Mihai253451 42.41
189 Sher, Miron N253459 37.34
190 Savon, Vladimir A253353 49.10
191 Mirkovic, Slobodan253370 31.26
192 Groszpeter, Attila253350 29.39
193 Bass, Leonid253262 32.42
194 Ivanovic, Božidar253251 43.19
195 Lanka, Zigurds253257 29.44
196 Ye Rongguang253259 26.08
197 Hodgson, Julian M253148 26.27
198 Orlov, Georgi253159
199 Cvitan, Ognjen253150 28.06
200 Adianto, Utut253162 24.62
201 Van der Sterren, Paul253149 33.62
202 Zlotnik, Boris A253062 43.04
203 Mokrý, Karel253051 30.73
204 King, Daniel J253049 26.17
205 Gipslis, Aivars253060 52.73
206 Zapata, Alonso252851 31.19
207 Alburt, Lev O252853 44.19
208 Cebalo, Mišo252849 44.73
209 Bagirov, Vladimir K252752 53.21
210 Gheorghiu, Florin252752 45.57
211 Csom, István252750 49.41
212 Darga, Klaus V252765 55.69
213 Shneider, Aleksandr252658 27.44
214 Velimirovic, Dragoljub252651 47.47
215 Minasian, Artashes252659 22.78
216 Inkiov, Ventzislav252452 33.45
217 Milos, Gilberto252454 26.00
218 Yuneev, Alexey252463
219 Damljanovic, Branko252449 28.37
220 Ruban, Vadim252452 25.38
221 Pfleger, Helmut252458 46.23
222 Lukin, Andrei M252355 41.17
223 Wilder, Michael252350 27.12
224 Horvath, Jozsef252350 25.22
225 Rodriguez, Amador252349 33.15
226 Ye Jiangchuan252357 28.94
227 Dizdar, Goran252251 30.91
228 Gufeld, Eduard E252255 53.62
229 Cámpora, Daniel H252249 32.34
230 Yrjola, Jouni252252 30.02
231 Barlov, Dragan252251 32.75
232 Mochalov, Evgeny V252171 38.01
233 Machulsky, Anatoly D252157 33.10
234 Chiburdanidze, Maia G252152 28.79
235 Baburin, Alexander251962 22.70
236 Marjanovic, Slavoljub251950 34.82
237 Veingold, Aleksander251967 36.06
238 Gofshtein, Leonid D251965 36.53
239 Hebden, Mark251851 31.71
240 Antunes, Antonio251757 27.73
241 Donchev, Dimitar I251656 31.28
242 Zaichik, Gennady L251650 32.72
243 Faragó, Iván251650 43.58
244 Georgadze, Tamaz V251562 41.97
245 Arnason, Jon L251550 28.96
246 Rausis, Igors251562 28.56
247 Vitolinš, Alvis251464 43.38
248 Zagrebelny, Sergey251459
249 Rohde, Michael A251453 30.18
250 Sahovic, Dragutin251362 49.23
251 Polgar, Zsuzsa251350 20.53
252 Simic, Radoslav251156 41.39
253 Frias, Victor J251057 33.72
254 Gligoric, Svetozar251054 66.74
255 Kantsler, Boris251057 27.54
256 London, Dimitri251065 26.94
257 Franco Ocampos, Zenon251054 33.47
258 Bronstein, David I250958 65.70
259 Wedberg, Tom250950 35.92
260 Gruenberg, Hans Ulrich250951 33.81
261 Illescas Cordoba, Miguel250851 23.91
262 Bischoff, Klaus250849 28.39
263 Watson, William N250649 27.54
264 Mortensen, Erling250651 34.57
265 Tseitlin, Mark D250560 46.11
266 Graf, Alexander250557 27.18
267 Renet, Olivier250549 24.86
268 Kožul, Zdenko250450 23.44
269 Guseinov, Aidyn250458 37.83
270 Ivanov, Igor V250453 42.81
271 Gruenfeld, Yehuda250354 33.67
272 Lau, Ralf250349 30.03
273 Xu Jun250355 27.12
274 Petrosian, Arshak B250351 35.87
275 Byrne, Robert E250362 61.53
276 Tunik, Gennady250358 36.43
277 Brunner, Lucas250350 22.42
278 Sellos, Didier250259 32.70
279 Stoica, Valentin250267 39.71
280 Lein, Anatoly250254 58.59
281 Filipenko, Alexander V250166 40.66
282 Reyes, Juan250061 26.51
283 Espig, Lutz250054 40.82
284 Piket, Jeroen250049 20.76
285 Hickl, Joerg249950 24.54
286 Efimov, Igor249863 29.12
287 Fokin, Sergey249770 34.05
288 Rivas Pastor, Manuel249754 29.30
289 Seret, Jean Luc249761
290 Stohl, Igor249751 25.09
291 Nikolac, Juraj249665 57.52
292 Sadler, Matthew249658 15.46
293 Wolff, Patrick G249652 21.71
294 Andrianov, Nikolai249668 27.86
295 Malisauskas, Vidmantas249654 26.24
296 Rodriguez Vargas, Orestes249557 46.32
297 Zhuravliov, Valerij249568 50.89
298 Palatnik, Semen A249556 39.60
299 Zilberman, Nathan R249564 49.49
300 Lukacs, Peter249550 39.31
301 Meister, Yakov249465 34.14
302 Piskov, Yury249456 28.05
303 García Gonzáles, Guillermo249352 35.89
304 Barbero, Gerardo F249252 28.19
305 Tolnai, Tibor249250 25.11
306 Matulovic, Milan249158 54.39
307 Gutman, Lev249150 44.10
308 Basin, Leonid249154 31.93
309 Nijboer, Friso249153 24.43
310 Tisdall, Jonathan D249151 31.18
311 Ivkov, Borislav249154 55.96
312 Kishnev, Sergey249166 32.99
313 Belov, Igor249059
314 Norwood, David249055 21.08
315 Schussler, Harry249053 32.35
316 Reshevsky, Samuel H249061 77.92
317 Kotronias, Vasilios248950 25.18
318 Jansa, Vlastimil248951 46.92
319 Pytel, Krzysztof248866 44.46
320 Vogt, Lothar H248851 37.79
321 Hertneck, Gerald248854 26.12
322 Vera, Reynaldo248753 28.81
323 Loginov, Valery A248657 33.88
324 Zilberstein, Valery I248671 46.55
325 Tischbierek, Raj248653 27.10
326 Ornstein, Axel248561 37.52
327 Unzicker, Wolfgang248558 64.35
328 Okhotnik, Vladimir248558 39.67
329 Tseitlin, Mikhail S248553 42.37
330 Drasko, Milan248550 26.90
331 Ioseliani, Nana248558 27.72
332 Sideif Sade, Fikret I248563 37.83
333 Moroz, Alexander248464 28.79
334 Foisor, Ovidiu248356 30.57
335 Titov, German248358 26.51
336 Gomez Baillo, Jorge H248358 30.53
337 Li Zunian248375 31.81
338 Akhmilovskaya, Elena248365
339 Schlosser, Philipp248255 21.20
340 Popchev, Milko248253 24.96
341 Meduna, Eduard248250 39.14
342 Wojtkiewicz, Aleksander248253 26.79
343 Mainka, Romuald248253 26.46
344 Pekarek, Ales248152 27.87
345 Flear, Glenn C248150 30.72
346 Meister, Peter248156 23.35
347 Magomedov, Magaram248167 23.45
348 Sznapik, Aleksander248151 38.72
349 Sunye Neto, Jaime248057 32.49
350 Plaskett, Jim248053 29.62
351 Levitt, Jonathan248051 26.41
352 Fernandez Garcia, Jose Luis248058 35.49
353 Ionescu, Constantin248056 31.13
354 Kouatly, Bachar247951 31.66
355 Malevinsky, Alexander A247868 39.68
356 Rytshagov, Mikhail247864 21.96
357 Mascarinas, Rico247856 36.66
358 Granda Zuńiga, Julio E247851 22.68
359 Motwani, Paul247856 27.38
360 Lin Ta247862 26.75
361 Legky, Nikolay A247759 34.55
362 Womacka, Mathias247766 23.35
363 Hansen, Lars Bo247750 21.10
364 Murshed, Niaz247758 23.47
365 Lombardy, William J247774 51.91
366 Dueball, Juergen247770 44.59
367 Garcia Palermo, Carlos247652 35.91
368 Rukavina, Josip247663 46.92
369 Dzuban, Oleg I247665
370 Ree, Hans247659 45.13
371 Brooks, Michael A247561 28.54
372 Trapl, Jindrich247573 47.60
373 Velikov, Petar247553 38.59
374 Skembris, Spyridon247453 31.69
375 Lukov, Valentin247457 33.89
376 Vallifuoco, Giacomo247467 32.49
377 Hazai, Laszlo247453 36.38
378 Kosten, Anthony C247349 31.27
379 Kraidman, Yair247267 56.99
380 Rubinetti, Jorge A247258 44.58
381 Ghinda, Mihail Viorel247259 40.27
382 Yuferov, Sergey N247166 43.91
383 Kallai, Gabor247156 30.69
384 Řgaard, Leif247174 37.82
385 Shabalov, Alexander247152 22.13
386 Arbakov, Valentin247064 37.76
387 Georgiev, Krum246954 31.44
388 Martinovic, Slobodan246956 44.27
389 Ermenkov, Evgenij246954 40.09
390 Marin, Mihail246955 24.53
391 Serper, Grigory246954 20.13
392 Tempone, Marcelo246963 27.15
393 Padevsky, Nikola B246962 56.42
394 Orso, Miklos246862 33.40
395 Klinger, Josef246850 22.40
396 Tringov, Georgy P246861 52.65
397 Rechlis, Gad246856 22.74
398 Schmidt, Wlodzimierz246849 46.56
399 Gleizerov, Evgeny246765 26.61
400 Saltaev, Mihail246762 26.94
401 Rogulj, Branko246665 38.25
402 Petkevich, Jusefs246666 48.87
403 Vukic, Milan246658 46.20
404 Kogan, Boris246666
405 Szekely, Peter246654 34.73
406 Spacek, Petr246671 35.68
407 Palac, Mladen246661 18.70
408 Abramovic, Boško246550 38.71
409 Vilela, Jose Luis246557 36.62
410 Schoenthier, Frank246574 30.95
411 Ilincic, Zlatko246452 21.47
412 Braga, Fernando246456 31.31
413 Arkell, Keith C246352 28.81
414 Avshalumov, Alex246360 25.66
415 Valkesalmi, Kimmo246355 28.50
416 Knezevic, Milorad246359 52.99
417 Hecht, Hans-Joachim246366 50.76
418 Hausner, Ivan246355 37.54
419 Szabó, László246373 72.62
420 Djukic, Zeljko246270 30.38
421 Wang Zili246258 21.38
422 Rajkovic, Dusan246152 47.37
423 Makarov, Marat246059 26.48
424 Marangunic, Srdjan246068 45.99
425 Vokác, Marek246053 30.90
426 Davies, Nigel R246049 29.25
427 Piasetski, Leon David245968
428 Djuric, Stefan245950 34.26
429 Barbulescu, Dan245966 25.36
430 Varavin, Viktor245965 22.44
431 Cabrilo, Goran245952 31.33
432 Ernst, Thomas245851 29.20
433 Gruenenwald, Joerg245869 24.41
434 Schmittdiel, Eckhard245850 29.47
435 Gurevich, Dmitry245851 33.14
436 McKay, Roderick M245766 37.72
437 Blatny, Pavel245750 21.36
438 Kapengut, Albert Z245670 45.32
439 Temirbaev, Serik245662
440 Lechtynsky, Jiri245553 41.93
441 Gallagher, Joseph G245552 25.49
442 Cramling, Dan245570 30.74
443 Sigurjónsson, Gudmundur245570 42.10
444 Veinger, Itzhak245567 51.32
445 Kuijf, Marinus245452 29.72
446 Bilek, István245461 57.22
447 Wirthensohn, Heinz245457 38.49
448 Luther, Thomas245454 19.98
449 Negulescu, Adrian245364 28.39
450 Nemet, Ivan245357 46.55
451 Cramling, Pia245353 26.52
452 Mednis, Edmar J245355 52.61
453 Ekstroem, Roland245357 33.44
454 Staniszewski, Piotr245356 23.16
455 Ryskin, Alexander245275 26.80
456 Mohr, Stefan245250 22.02
457 Ostermeyer, Peter245260 46.05
458 Lagunow, Alexander245273 22.30
459 Popov, Luben245270 53.76
460 Ledger, Andrew245167 20.44
461 Janovsky, Sergey245161 29.70
462 Haba, Petr245152 24.82
463 Kovacevic, Predrag245073 29.15
464 Semkov, Semko244955 29.67
465 Ziatdinov, Raset244968 30.84
466 Pribyl, Josef244955 42.05
467 Rachels, Stuart244870 20.10
468 Kiik, Kalle244860 26.72
469 Klundt, Klaus244861 47.85
470 Hoi, Carsten244849 32.79
471 Frolov, Artur244759 19.25
472 Zelcic, Robert244773 24.11
473 Cifuentes Parada, Roberto244754 31.86
474 Lutz, Christopher244754 18.69
475 Karolyi, Tibor Jr244752 27.95
476 Nikolic, Zivoslav244753 35.88
477 Sendera, Jaroslaw244773 24.51
478 Verduga, Denis Homero244761
479 Neckar, Lubomir244671 39.24
480 Howell, James C244656 22.45
481 Gurgenidze, Bukhuti I244662 55.96
482 Stempin, Pawel244651 30.30
483 Dizdarevic, Emir244653 31.58
484 Lima, Darcy244559 27.44
485 Strikovic, Aleksa244553 28.47
486 Schulte, Oliver244566 20.86
487 Brestian, Egon244558 25.26
488 Hawelko, Marek244553 30.22
489 Ardiansyah, Haji244565 37.90
490 Conquest, Stuart244450 22.66
491 Thorhallsson, Throstur244458 20.62
492 Buecker, Peter244462
493 Ostojic, Predrag244467 51.69
494 Semeniuk, Alexander A244464 37.14
495 Horvath, Tamas244357 38.02
496 Hug, Werner244357 37.14
497 Krnic, Zdenko244361 42.08
498 Plachetka, Jan244350 44.70
499 Winants, Luc244353 26.83
500 Renman, Nils Gustaf244362

These ratings, calculated as of October 31, 1989, incorporate all games (against rated opponents) played in the time between November 1, 1988 and October 31, 1989, along with the ratings that were already calculated as of October 31, 1988. Players who have played an insufficient number of games in recent years will not appear on the list, even though you may see them on previous and/or subsequent lists. Any players who have been completely inactive for three years are removed from the list.

Definition of columns in the above list:

# refers to the player's world rank on this list.

Player is the full name of the player. Click on the player's name to see a career progression of the player's ratings.

Rating is the calculated rating for the player, as of October 31, 1989. This represents the player's estimated strength on November 1, 1989.

+/- is the standard deviation of the player's rating estimate. It is based on a geometric average of the number of rated games played in past years. Players who play very frequently will have a smaller +/- value, indicating a greater confidence in the accuracy of their rating. Players whose +/- value exceeds 76 are classified as "inactive" and removed from the ranking list due to their infrequent play against rated opponents. Mathematically, a player's rating is an estimate of their exact strength on November 1, 1989. The +/- value represents the standard deviation of that estimate; the player's true strength on November 1, 1989 should be within one standard deviation of their calculated rating approximately 68% of the time, and within two standard deviations of their calculated rating approximately 95% of the time.

Best? is the estimated likelihood that the player was actually the strongest player in the world on November 1, 1989. Since ratings are known to be inaccurate, it is possible that a lower-rated player is actually much stronger than their rating would indicate, and it is also possible that other players are weaker than their ratings would indicate. This number indicates the likelihood that the player is indeed the strongest player in the world. On a particular list, it will add up to 100% across the complete list of all players. This value is only calculated for the top 100 players on any rating list.

75%? gives a 75%-confidence world ranking for the player. Because ratings are known to be inaccurate, even if a particular player is rated third in the world, we cannot say with 100% certainty that they are truly one of the three strongest players in the world. This number indicates the world rank that we are 75% sure the player is "no worse than". Thus if a player has a value of #12 in this column, we are 75% sure that the player is one of the twelve strongest players in the world. This value is only calculated for the top 100 players on any rating list.

Age is the player's exact age in years, on October 31, 1989. If a player's age is displayed as a link, that means that this rating was active at the time of their next birthday. Click on the link to see the sorted list of all players' ratings on their birthdays when turning that same age.

Back to top

Home