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Top 10 active players as of September 30, 1985


Top 500 active players as of September 30, 1985

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28075049.8% #322.46
2 Karpov, Anatoly E27894931.3% #434.35
3 Beliavsky, Alexander G2740507.3% #1031.79
4 Vaganian, Rafael A2707492.0% #2033.95
5 Timman, Jan H2703471.5% #2233.79
6 Korchnoi, Viktor L2700491.4% #2354.52
7 Hübner, Robert2696491.2% #2636.90
8 Portisch, Lajos2677480.4% #3748.49
9 Ljubojevic, Ljubomir2671490.4% #4134.91
10 Ribli, Zoltán2664490.2% #4634.06
11 Eingorn, Viacheslav S2662510.3% #4828.85
12 Nunn, John D M2661490.2% #4730.43
13 Agzamov, Georgy T2658500.2% #5031.06
14 Dolmatov, Sergey V2657520.2% #5326.61
15 Polugaevsky, Lev A2655500.1% #5350.86
16 Psakhis, Lev B2655490.1% #5226.84
17 Tukmakov, Vladimir B2652500.1% #5639.54
18 Tal, Mikhail2652490.1% #5548.89
19 Jussupow, Artur M2650510.1% #5725.63
20 Seirawan, Yasser2648500.1% #5925.52
21 Gulko, Boris F2647510.1% #6138.64
22 Miles, Anthony J2646470.1% #5930.44
23 Khalifman, Alexander2644620.4% #7019.70
24 Andersson, Ulf264348 #6334.26
25 Malaniuk, Vladimir P2642520.1% #6528.19
26 Spassky, Boris V264150 #6548.67
27 Dorfman, Iosif D2641520.1% #6733.41
28 Dvoiris, Semen I2641580.2% #7126.91
29 Romanishin, Oleg M263849 #6833.72
30 Sokolov, Andrey Y263750 #6922.53
31 Chernin, Alexander M2637500.1% #7025.56
32 Sveshnikov, Evgeny E263449 #7135.63
33 Lputian, Smbat G263350 #7327.63
34 Smyslov, Vassily V262851 #7864.52
35 Lerner, Konstantin Z262852 #8035.59
36 Bronstein, David I2623690.3% #9661.61
37 Vasiukov, Evgeny A2619610.1% #9552.57
38 Larsen, Bent261751 #9050.57
39 Razuvaev, Yury S261750 #9039.96
40 Smagin, Sergey261553 #9427.06
41 Nikolic, Predrag261449 #9225.05
42 Rozentalis, Eduardas261256 #9822.34
43 Gavrikov, Victor N261149 #9428.17
44 Kavalek, Lubomir261155 #9942.14
45 Dzindzichashvili, Roman Y260854 #10141.40
46 Geller, Efim P260651 #10160.58
47 Gurevich, Mikhail N260552 #10326.61
48 Balashov, Yury S260550 #10236.55
49 Short, Nigel D260448 #10220.33
50 Petrosian, Arshak B260451 #10431.79
51 Novikov, Igor A260152 #10823.35
52 Tseshkovsky, Vitaly V260151 #10841.01
53 Gipslis, Aivars2600620.1% #11648.64
54 Vyzmanavin, Alexey259953 #11125.74
55 Christiansen, Larry M259851 #10929.26
56 Salov, Valery B259757 #11521.34
57 Makarichev, Sergey Y259657 #11731.87
58 Naumkin, Igor2596720.2% #12720.14
59 Torre, Eugenio259550 #11233.90
60 Panno, Oscar R259562 #12150.54
61 Smejkal, Jan259550 #11439.52
62 Ubilava, Elizbar E259452 #11535.09
63 Zaichik, Gennady L259155 #12128.63
64 Speelman, Jonathan S259149 #11728.99
65 Ehlvest, Jaan258953 #12022.95
66 Yurtaev, Leonid2589650.1% #13026.41
67 Sosonko, Gennadi258751 #12242.37
68 Vaisser, Anatoli258550 #12436.57
69 Kuzmin, Gennady P258553 #12639.70
70 Chekhov, Valery A258453 #12629.84
71 Adorján, András258349 #12435.50
72 Kochiev, Alexander258354 #12829.51
73 Agdestein, Simen258151 #12818.37
74 Browne, Walter S258151 #12936.72
75 Yudasin, Leonid G258052 #13026.14
76 Kharitonov, Andrey Y258052 #13126.49
77 Pintér, József258051 #13031.89
78 Mikhalchishin, Adrian B257951 #13130.87
79 Savon, Vladimir A2579710.1% #14445.01
80 Kupreichik, Viktor D257950 #13036.24
81 Hort, Vlastimil257949 #12941.72
82 Parma, Bruno257964 #13943.75
83 Chiburdanidze, Maia G257755 #13524.70
84 Chandler, Murray G257649 #13225.49
85 Timoshchenko, Gennady257661 #14136.42
86 Eolian, Levon S257561 #14126.04
87 van der Wiel, John T H257449 #13426.14
88 Ftácnik, Lubomír257348 #13427.91
89 Sax, Gyula257349 #13634.28
90 Podgaets, Mikhail Y257360 #14338.19
91 Mochalov, Evgeny V2573710.1% #15033.91
92 Azmaiparashvili, Zurab A257256 #14025.54
93 Shereshevsky, Mikhail I257270 #15035.44
94 Knaak, Rainer F257150 #13732.54
95 Velimirovic, Dragoljub257150 #13843.38
96 Tarjan, James E257157 #14233.61
97 Bagirov, Vladimir K256953 #14249.12
98 Gheorghiu, Florin256951 #14141.48
99 Popovic, Petar256949 #14026.63
100 Byrne, Robert E256860 #14757.44
101 Gorelov, Sergey G256754 28.12
102 Panchenko, Alexander N256656 31.98
103 Anikaev, Yury256564 37.25
104 Cebalo, Mišo256350 40.65
105 Marjanovic, Slavoljub256149 30.73
106 Dokhoian, Yury256166 20.92
107 Polovodin, Igor A256066 30.52
108 Arkhipov, Sergey256057 31.27
109 Stean, Michael F255967 32.07
110 Kremenetsky, Anatoly M255972 46.71
111 Barua, Dibyendu255867 18.92
112 Suba, Mihai255850 38.33
113 Rashkovsky, Nukhim N255752 39.45
114 Ivanov, Alexander V255765 29.41
115 Pigusov, Evgeny255654 24.50
116 deFirmian, Nicholas E255650 28.18
117 Glek, Igor V255556 23.90
118 Hulak, Krunoslav255551 34.35
119 Reshevsky, Samuel H255365 73.84
120 Kindermann, Stefan255350 25.76
121 Nogueiras, Jesus255351 26.20
122 Nemet, Ivan255175 42.46
123 Gufeld, Eduard E255058 49.53
124 Mestel, A Jonathan254953 28.55
125 Kovacevic, Vladimir254851 43.51
126 Taimanov, Mark E254855 59.65
127 Georgiev, Kiril254851 19.84
128 Henley, Ron W254755 28.82
129 Kengis, Edvins254657 26.47
130 Guseinov, Aidyn254561 33.74
131 Hazai, Laszlo254554 32.29
132 Yermolinsky, Alex V254557 27.47
133 Cámpora, Daniel H254554 28.25
134 Kurajica, Bojan254549 37.87
135 Gligoric, Svetozar254553 62.66
136 Korzubov, Peter254455 23.74
137 Faragó, Iván254349 39.49
138 Quinteros, Miguel A254352 37.76
139 Hansen, Curt254349 21.03
140 Graf, Alexander254268 23.10
141 Ivanov, Igor V254256 38.73
142 Karlsson, Lars254251 30.22
143 Smirin, Ilia254173 17.69
144 Vitolinš, Alvis254161 39.29
145 Kruppa, Yuri254064 21.27
146 Kapengut, Albert Z254074 41.24
147 Gurgenidze, Bukhuti I254054 51.88
148 Vorotnikov, Vladislav V254059 38.12
149 Ekstroem, Roland253970 29.36
150 Sturua, Zurab253962 26.31
151 Kholmov, Ratmir D253853 60.38
152 Mokrý, Karel253849 26.65
153 Barbero, Gerardo F253758 24.11
154 Olafsson, Helgi253650 29.12
155 Uhlmann, Wolfgang253551 50.50
156 Georgadze, Tamaz V253453 37.89
157 Andrianov, Nikolai253469 23.78
158 Ivkov, Borislav253352 51.88
159 London, Dimitri253163 22.86
160 Didishko, Vereslav252865 36.47
161 Lobron, Eric252849 25.40
162 Najdorf, Miguel252870 75.46
163 Osnos, Viacheslav V252872 50.18
164 Wedberg, Tom252854 31.84
165 Vladimirov, Evgeny Y252771 28.69
166 Ostermeyer, Peter252756 41.96
167 Liberzon, Vladimir M252766 48.52
168 Spraggett, Kevin B252653 30.89
169 Palatnik, Semen A252562 35.51
170 Kogan, Boris252561
171 Matanovic, Aleksandar252463 55.35
172 Oll, Lembit252356 19.44
173 Abramovic, Boško252351 34.63
174 Csom, István252250 45.33
175 Jansa, Vlastimil252149 42.84
176 Lukacs, Peter252150 35.22
177 Zapata, Alonso252151 27.11
178 Neverov, Valery252160 21.27
179 Yuferov, Sergey N252167 39.82
180 Keene, Raymond252064
181 Simic, Radoslav251956 37.31
182 Ivanovic, Božidar251849 39.10
183 Gofshtein, Leonid D251865 32.44
184 Stohl, Igor251851 21.01
185 Cherepkov, Alexander V251766 64.91
186 Grigorian, Karen A251770 38.06
187 Groszpeter, Attila251652 25.31
188 Hjartarson, Jóhann251649 22.64
189 Inkiov, Ventzislav251549 29.36
190 Shneider, Aleksandr251559 23.36
191 Gaprindashvili, Nona251564 44.41
192 Unzicker, Wolfgang251356 60.26
193 Rodriguez, Amador251350 29.06
194 Gomez Baillo, Jorge H251259 26.45
195 Arnason, Jon L251251 24.88
196 Bukic, Enver251272 47.83
197 Garcia Palermo, Carlos251252 31.83
198 Hasanov, Marat251276 29.09
199 Vukic, Milan251157 42.11
200 Veingold, Aleksander251159 31.96
201 García Gonzáles, Guillermo251050 31.81
202 Vogt, Lothar H251051 33.70
203 Suetin, Alexey S251063 58.87
204 Mnatsakanian, Eduard A250957 46.81
205 Rukavina, Josip250953 42.84
206 Dlugy, Maxim250853 19.67
207 Gurevich, Dmitry250754 29.05
208 Pétursson, Margeir250750 25.62
209 Klovans, Janis250761 50.47
210 Drasko, Milan250652 22.81
211 Ree, Hans250551 41.04
212 Shamkovich, Leonid A250456 62.33
213 Fedorowicz, John P250354 27.01
214 Nikolic, Zivoslav250354 31.80
215 Pfleger, Helmut250357 42.15
216 Franco Ocampos, Zenon250365 29.38
217 Lein, Anatoly250252 54.51
218 Velikov, Petar250251 34.50
219 Wolf, Volker250264 28.06
220 Olafsson, Fridrik250267 50.68
221 Dizdar, Goran250160 26.82
222 Matulovic, Milan250057 50.30
223 Plachetka, Jan250050 40.62
224 Greenfeld, Alon250059 21.45
225 Thipsay, Praveen Mahadeo249957 26.13
226 Kirov Ivanov, Nino249951 40.06
227 Rivas Pastor, Manuel249953 25.21
228 Benjamin, Joel L249953 21.55
229 Rogers, Ian249849 25.27
230 Portisch, Ferenc249757 46.47
231 Alburt, Lev O249751 40.11
232 Kudrin, Sergey249749 26.06
233 Lombardy, William J249654 47.82
234 Nikolac, Juraj249665 53.44
235 Sigurjónsson, Gudmundur249652 38.01
236 Morovic Fernández, Iván E249653 22.52
237 Malich, Burkhard G249673 48.84
238 Tringov, Georgy P249653 48.56
239 Schmidt, Wlodzimierz249549 42.47
240 Pytel, Krzysztof249554 40.37
241 Gruenfeld, Yehuda249556 29.59
242 Soppe, Guillermo249566 25.04
243 Meduna, Eduard249352 35.05
244 Szekely, Peter249353 30.64
245 Djuric, Stefan249350 30.18
246 McKay, Roderick M249374 33.63
247 Cvitan, Ognjen249252 23.96
248 Kuporosov, Viktor249268 24.01
249 Murey, Yakov249255 44.16
250 Prandstetter, Eduard249251 36.79
251 Georgiev, Krum249150 27.35
252 Schussler, Harry249051 28.27
253 Radulov, Ivan249052 46.73
254 Sunye Neto, Jaime248852 28.41
255 Raicevic, Momcilo248775
256 Minic, Dragoljub248764 48.57
257 Donchev, Dimitar I248650 27.19
258 Basin, Leonid248663 27.85
259 Kaidanov, Gregory S248558 25.96
260 Malevinsky, Alexander A248568 35.59
261 Mednis, Edmar J248564 48.52
262 Toth, Bela248454 42.45
263 Antoshin, Vladimir S248369 56.38
264 Hodgson, Julian M248355 22.18
265 Anand, Viswanathan248270 15.80
266 Ernst, Thomas248156 25.12
267 Bischoff, Klaus248153 24.31
268 Benko, Pal C248165 57.21
269 Haik, Aldo248153 32.94
270 Bönsch, Uwe248151 26.95
271 Popchev, Milko248057 20.88
272 Řgaard, Leif248061 33.73
273 Lukin, Andrei M248058 37.09
274 Klaric, Zlatko247957 28.93
275 Govedarica, Radovan247974 37.63
276 Yrjola, Jouni247851 25.93
277 Plaskett, Jim247849 25.53
278 Padevsky, Nikola B247872 52.34
279 Kraidman, Yair247774 52.91
280 Aseev, Konstantin N247753 24.94
281 Feustel, Bernd247771 31.03
282 Zaitsev, Igor A247667 47.34
283 Antunes, Antonio247669 23.65
284 Pekarek, Ales247559 23.79
285 Barlov, Dragan247550 28.67
286 Espig, Lutz247554 36.73
287 Ghinda, Mihail Viorel247452 36.18
288 Schneider, Lars Ake247457
289 Cifuentes Parada, Roberto247362 27.77
290 Gruen, Peter247359 28.71
291 Podzielny, Karl Heinz247359 31.05
292 Bany, Jerzy247354 24.57
293 Rogulj, Branko247376 34.16
294 Spassov, Liuben247351 42.52
295 Heinbuch, Detlef247260 24.72
296 Popov, Luben247262 49.67
297 Hawelko, Marek247265 26.14
298 Soltis, Andrew E247266 38.34
299 Hermann, Manfred247261 43.08
300 Lechtynsky, Jiri246950 37.85
301 Tischbierek, Raj246952 23.02
302 Hebden, Mark246955 27.62
303 Womacka, Mathias246859 19.26
304 Seret, Jean Luc246865
305 Kurtenkov, Atanas246764 22.16
306 Sznapik, Aleksander246750 34.64
307 Tatai, Stefano246752 47.52
308 Knezevic, Milorad246750 48.91
309 Wirthensohn, Heinz246657 34.40
310 Vera, Reynaldo246652 24.73
311 Rubinetti, Jorge A246666 40.50
312 Pachmann, Ludek246664 61.38
313 Mirkovic, Slobodan246665 27.17
314 Moskalenko, Viktor246564 24.82
315 Fernandez Garcia, Jose Luis246564 31.41
316 Shvidler, Eliahu246463 25.78
317 Peters, John A246466 34.64
318 Sahovic, Dragutin246452 45.14
319 Andres Mendez, Miguel246462
320 Nun, Jiri246470 28.17
321 Gruenberg, Hans Ulrich246452 29.72
322 Flear, Glenn C246355 26.63
323 Vokác, Marek246364 26.81
324 Hjorth, Greg246362 22.21
325 Tseitlin, Mikhail S246255 38.29
326 Hartston, William R246266 38.13
327 Eslon, Jaan246271 33.57
328 Rajkovic, Dusan246259 43.29
329 Scheeren, Peter246261 30.17
330 Raicevic, Vladimir246160 36.41
331 Ligterink, Gert246154 35.87
332 Ermenkov, Evgenij246050 36.00
333 Li Zunian246056 27.73
334 Petrushin, Alexander I246058 38.55
335 Bisguier, Arthur B245872 55.97
336 Botterill, George Steven245867
337 Filipovic, Branko245857 27.98
338 Hug, Werner245864 33.05
339 Hamann, Svend245873 44.97
340 Birnboim, Nathan245865 34.84
341 Bilek, István245862 53.13
342 Enklaar, Bertus F245769
343 Yap, Andronico245654
344 Mascarinas, Rico245665 32.58
345 Gutman, Lev245651 40.01
346 Van Wijgerden, Cornelis245664 35.35
347 Wiedenkeller, Michael245658 22.72
348 Duer, Arne245573 26.22
349 Efimov, Igor245561 25.04
350 Pelts, Roman245570 48.55
351 Legky, Nikolay A245576 30.47
352 Renman, Nils Gustaf245564
353 Helmers, Knut J245457 28.65
354 Derikum, Axel245463 31.38
355 Bass, Leonid245369 28.33
356 Handoko, Edhi245355 25.09
357 Ardiansyah, Haji245358 33.82
358 Bjelajac, Milan245266 37.54
359 Kishnev, Sergey245268 28.91
360 Loginov, Valery A245163 29.80
361 Qi Jingxuan245157 37.89
362 Klinger, Josef245053 18.31
363 Hernandez, Roman245052 35.85
364 Pliester, Leon245061 31.11
365 Martinovic, Slobodan244952 40.18
366 Wilder, Michael244970 23.04
367 Barczay, Laszlo244963 49.61
368 Nei, Iivo244875 53.91
369 Karner, Hillar244860 50.17
370 Leow Leslie M244872
371 Neckar, Lubomir244874 35.16
372 Stoica, Valentin244765 35.62
373 Sharif, Mershad244770 33.22
374 Van der Sterren, Paul244752 29.54
375 Seredenko, Vladimir244765 45.37
376 Nun, Josef244759 52.19
377 Ambroz, Jan244659 31.28
378 Pecorelli Garcia, Humberto244658 21.79
379 Thorsteins, Karl244654 20.96
380 McCambridge, Vincent244657 25.56
381 Lanka, Zigurds244571 25.36
382 Lau, Ralf244554 25.94
383 Velickovic, Sasa244465 34.49
384 Forintos, Gyözö V244468 50.17
385 Ryskin, Alexander244373 22.72
386 Hellers, Ferdinand244365 16.67
387 Kuzmin, Alexey244272 22.56
388 Staniszewski, Piotr244256 19.07
389 Nurkic, Sahbaz244273 29.54
390 Ornstein, Axel244154 33.43
391 Lalic, Bogdan244158 21.56
392 Vilela, Jose Luis244151 32.53
393 Frias, Victor J244159 29.64
394 Grigorov, Jordan N244053 31.81
395 Dzuban, Oleg I244075
396 Dobrovolsky, Ladislav244060 34.77
397 Akesson, Ralf244064 24.64
398 Cabrilo, Goran244058 27.24
399 Horvath, Jozsef243961 21.13
400 Doda, Zbigniew243971 54.61
401 Reyes, Juan243873 22.43
402 Adamski, Jan243852 41.88
403 De Wit, Johannes S243760 21.01
404 Watson, John L243775 34.07
405 Cooper, John Grantley243774
406 Ghitescu, Theodor243662 51.68
407 Banas, Jan243654 38.32
408 Kestler, Hans-Günter243669 45.80
409 Doncevic, Dario243659 27.72
410 Hecht, Hans-Joachim243560 46.67
411 Spiridonov, Nikola243551 47.59
412 Ost Hansen, Jacob243358
413 Ricardi, Pablo243358 23.60
414 Klundt, Klaus243371 43.76
415 Lalev, Dimitar243265 25.70
416 Schneider, Attila243260 30.46
417 Tisdall, Jonathan D243258 27.09
418 Foisor, Ovidiu243257 26.48
419 Littlewood, Paul E243268 29.70
420 Sideif Sade, Fikret I243261 33.74
421 Szmetan, Jorge243161 35.34
422 Bellin, Robert243069 33.25
423 Ochoa de Echaguen, F Javier243062 31.07
424 Mortensen, Erling243052 30.48
425 Krnic, Zdenko242965 37.99
426 Fedder, Steen242869 34.29
427 Kelecevic, Nedeljko242869 38.55
428 Schweber, Samuel242864 49.20
429 Davies, Nigel R242863 25.16
430 Van Riemsdijk, Herman C242762 37.09
431 Goehring, Karl Heinz242664
432 Bielczyk, Jacek242658 32.60
433 Langeweg, Kick242556 48.56
434 Levitina, Irina S242559 31.31
435 Manouck, Thierry242563 28.38
436 Damljanovic, Branko242558 24.29
437 Reefschlaeger, Helmut242461 41.48
438 Debarnot, Roberto242470 38.15
439 Paehtz, Thomas Sr242451 29.07
440 Wittmann, Walter242456 37.55
441 Dreev, Alexey242461 16.69
442 Sanna, Gianlazzaro242361 25.47
443 Lengyel, Levente242361 52.30
444 Pribyl, Josef242352 37.96
445 Litvinov, Vladimir242371 44.20
446 Ilic, Zoran242359 22.16
447 Kaiszauri, Konstanty242275 32.92
448 Casper, Thomas242257 26.54
449 Seppeur, Reinhold242263 30.13
450 Adianto, Utut242165 20.54
451 Bronstein, Luis242161 39.33
452 Ivanov, Alexander V2242176 29.41
453 Jakobsen, Ole242155 42.94
454 Bellon Lopez, Juan Manuel241952 35.39
455 Cramling, Dan241968 26.65
456 Jailjan, M.241966
457 Saeed, Saeed Ahmed241858
458 Zaltsman, Vitaly F241858 43.92
459 Kolev, Atanas241864 18.21
460 Gross, Stefan241857 36.09
461 Valkesalmi, Kimmo241860 24.41
462 Welin, Thomas241873 26.07
463 Garcia Martinez, Silvino241751 41.24
464 Borm, Franciscus WM241762
465 Zichichi, Alvise241760 47.24
466 Piket, Jeroen241661 16.67
467 Kristiansen, Jens241550 33.35
468 Pedersen, Erik241556 27.05
469 Barle, Janez241565 33.52
470 Westerinen, Heikki MJ241451 41.42
471 Shabanov, Yury F241468 47.88
472 Brinck Claussen, Bjorn241456
473 Cvetkovic, Srdjan241461 39.59
474 Liang Jinrong241365 25.36
475 Semkov, Semko241355 25.59
476 Bohm, Hans241355 35.71
477 Djukic, Zeljko241363 26.30
478 Sygulski, Artur241352 25.19
479 Tiller, Bjorn241267 26.70
480 Sisniega, Marcel241255 26.17
481 Karolyi, Tibor Jr241255 23.87
482 Damjanovic, Mato241172 58.52
483 Bukal, Vladimir Sr241161 45.91
484 Wockenfuss, Klaus240956 34.09
485 Braga, Fernando240964 27.22
486 Garcia, Gildardo240961 31.56
487 Rakic, Tomislav240968 50.88
488 Arkell, Keith C240971 24.73
489 Zahariev, Zahari240968 24.05
490 Janssen, Han240866 25.57
491 Rasmussen, Karsten240857 19.95
492 Sibarevic, Milenko240863 40.55
493 Hartman, Christer240766 24.92
494 Bastian, Herbert240758 32.80
495 Lanc, Alois240654 37.62
496 Bjarnason, Saevar240657 31.20
497 Gobet, Fernand240659 23.63
498 Karsa, Laszlo240568 30.05
499 Paulsen, Dirk240562 26.67
500 Hartoch, Robert G240560

These ratings, calculated as of September 30, 1985, incorporate all games (against rated opponents) played in the time between October 1, 1984 and September 30, 1985, along with the ratings that were already calculated as of September 30, 1984. 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 September 30, 1985. This represents the player's estimated strength on October 1, 1985.

+/- 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 October 1, 1985. The +/- value represents the standard deviation of that estimate; the player's true strength on October 1, 1985 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 October 1, 1985. 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 September 30, 1985. 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.

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