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Top 10 active players as of September 30, 1984


Top 500 active players as of September 30, 1984

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E28024842.9% #333.35
2 Kasparov, Garry K28004941.0% #321.46
3 Timman, Jan H2717482.5% #1632.79
4 Beliavsky, Alexander G2717503.0% #1730.79
5 Korchnoi, Viktor L2704491.6% #2253.52
6 Portisch, Lajos2700491.4% #2447.49
7 Vaganian, Rafael A2694501.0% #2732.95
8 Polugaevsky, Lev A2693511.1% #2749.86
9 Ribli, Zoltán2678500.5% #3633.06
10 Dolmatov, Sergey V2676550.8% #3925.61
11 Ljubojevic, Ljubomir2671490.3% #4033.91
12 Smyslov, Vassily V2666520.3% #4563.52
13 Andersson, Ulf2662480.2% #4533.26
14 Hübner, Robert2662490.2% #4635.90
15 Eingorn, Viacheslav S2661530.3% #4927.85
16 Spassky, Boris V2659490.1% #4847.67
17 Tal, Mikhail2656490.2% #5147.89
18 Gulko, Boris F2648530.1% #5937.64
19 Psakhis, Lev B2646490.1% #5925.84
20 Jussupow, Artur M2646500.1% #6024.63
21 Romanishin, Oleg M2646490.1% #5932.72
22 Agzamov, Georgy T2641540.1% #6530.06
23 Dorfman, Iosif D2641510.1% #6532.41
24 Miles, Anthony J263848 #6529.44
25 Lerner, Konstantin Z2637530.1% #6834.59
26 Kupreichik, Viktor D2637530.1% #7035.24
27 Balashov, Yury S263650 #6935.55
28 Salov, Valery B2635580.2% #7420.34
29 Novikov, Igor A2633570.1% #7522.35
30 Dvoiris, Semen I2631560.1% #7725.91
31 Sosonko, Gennadi2630500.1% #7341.37
32 Ehlvest, Jaan2628560.1% #7921.95
33 Razuvaev, Yury S262752 #7838.96
34 Nikolic, Predrag262550 #7824.05
35 Ftácnik, Lubomír262549 #7826.91
36 Lputian, Smbat G262553 #8026.63
37 Geller, Efim P262552 #8059.58
38 Tukmakov, Vladimir B262451 #7938.54
39 Chernin, Alexander M2624550.1% #8324.56
40 Nunn, John D M262349 #7929.43
41 Bronstein, David I2622610.1% #8860.61
42 Seirawan, Yasser262249 #8024.52
43 Vasiukov, Evgeny A2618550.1% #8851.57
44 Sveshnikov, Evgeny E261752 #8734.63
45 Malaniuk, Vladimir P261452 #9127.19
46 Vyzmanavin, Alexey261154 #9524.74
47 Gavrikov, Victor N260952 #9627.17
48 Hort, Vlastimil260848 #9440.72
49 Kavalek, Lubomir260852 #9741.14
50 Kuzmin, Gennady P260754 #10038.70
51 Sokolov, Andrey Y260653 #10021.53
52 Adorján, András260349 #10034.50
53 Gipslis, Aivars2602630.1% #11047.64
54 Browne, Walter S260050 #10435.72
55 Dvoretsky, Mark I2600720.1% #12036.81
56 Kochiev, Alexander259954 #10728.51
57 Christiansen, Larry M259751 #10828.26
58 Ubilava, Elizbar E259753 #10934.09
59 Makarichev, Sergey Y259553 #11130.87
60 Sax, Gyula259550 #10933.28
61 Chandler, Murray G259449 #11024.49
62 Smejkal, Jan259451 #11138.52
63 Chekhov, Valery A259352 #11228.84
64 Larsen, Bent259251 #11349.57
65 Vaisser, Anatoli259253 #11635.57
66 Rozentalis, Eduardas259159 #11921.34
67 Parma, Bruno2590730.2% #13142.75
68 Tseshkovsky, Vitaly V259051 #11640.01
69 Yurtaev, Leonid258858 #12125.41
70 Torre, Eugenio258749 #11832.90
71 Timoshchenko, Gennady258663 #12735.42
72 Mikhalchishin, Adrian B258551 #12029.87
73 Didishko, Vereslav258466 #13235.47
74 Averkin, Orest N2583740.1% #13940.60
75 Zaichik, Gennady L258054 #12827.63
76 Savon, Vladimir A258065 #13544.01
77 Naumkin, Igor257768 #13919.14
78 Petrosian, Arshak B257754 #13030.79
79 Yudasin, Leonid G257653 #13125.14
80 Dzindzichashvili, Roman Y257654 #13240.40
81 Kharitonov, Andrey Y257653 #13125.49
82 Panno, Oscar R257562 #13749.54
83 Speelman, Jonathan S257549 #12927.99
84 Kurajica, Bojan257349 #13136.87
85 Azmaiparashvili, Zurab A257352 #13424.54
86 Knaak, Rainer F257149 #13431.54
87 Rashkovsky, Nukhim N257153 #13638.45
88 Tarjan, James E257052 #13732.61
89 Karlsson, Lars256951 #13629.22
90 Short, Nigel D256849 #13719.33
91 Barua, Dibyendu256663 #14717.92
92 Anikaev, Yury256558 #14536.25
93 Bagirov, Vladimir K256453 #14348.12
94 Podgaets, Mikhail Y256464 #15137.19
95 Gheorghiu, Florin256451 #14240.48
96 Marjanovic, Slavoljub256351 #14329.73
97 Georgadze, Tamaz V256154 #14536.89
98 Byrne, Robert E256055 #14856.44
99 Polovodin, Igor A256059 #15129.52
100 Stean, Michael F255960 #15131.07
101 Kremenetsky, Anatoly M255964 45.71
102 Korzubov, Peter255853 22.74
103 Smagin, Sergey255859 26.06
104 Kholmov, Ratmir D255755 59.38
105 van der Wiel, John T H255749 25.14
106 Abramovic, Boško255750 33.63
107 Palatnik, Semen A255666 34.51
108 Vitolinš, Alvis255462 38.29
109 Kovacevic, Vladimir255451 42.51
110 Mokrý, Karel255451 25.65
111 Guseinov, Aidyn255456 32.74
112 Mestel, A Jonathan255150 27.55
113 Cebalo, Mišo255154 39.65
114 Gorelov, Sergey G255156 27.12
115 Quinteros, Miguel A255053 36.76
116 Ivanovic, Božidar255051 38.10
117 Panchenko, Alexander N255054 30.98
118 Velimirovic, Dragoljub255052 42.38
119 Vorotnikov, Vladislav V254958 37.12
120 Graf, Alexander254961 22.10
121 Chiburdanidze, Maia G254956 23.70
122 Alburt, Lev O254850 39.11
123 deFirmian, Nicholas E254850 27.18
124 Popovic, Petar254853 25.63
125 Henley, Ron W254651 27.82
126 Yermolinsky, Alex V254356 26.47
127 Gligoric, Svetozar254351 61.66
128 Pintér, József254353 30.89
129 Reshevsky, Samuel H254259 72.84
130 Suba, Mihai254150 37.33
131 Taimanov, Mark E254153 58.65
132 Glek, Igor V254163 22.90
133 Lombardy, William J254058 46.82
134 Gufeld, Eduard E253856 48.53
135 Veingold, Aleksander253861 30.96
136 Pigusov, Evgeny253660 23.50
137 Nemet, Ivan253669 41.46
138 Nikolic, Zivoslav253655 30.80
139 Weinstein, Norman253674 33.98
140 Zilberman, Nathan R253568 44.41
141 Vogt, Lothar H253551 32.70
142 Andrianov, Nikolai253361 22.78
143 Ivanov, Igor V253353 37.73
144 Csom, István253250 44.33
145 Sturua, Zurab253261 25.31
146 Meduna, Eduard253151 34.05
147 Hazai, Laszlo253151 31.29
148 Simic, Radoslav253153 36.31
149 Uhlmann, Wolfgang252851 49.50
150 Najdorf, Miguel252862 74.46
151 Osnos, Viacheslav V252764 49.18
152 Grigorian, Karen A252765 37.06
153 Wedberg, Tom252750 30.84
154 Vladimirov, Evgeny Y252763 27.69
155 Shneider, Aleksandr252757 22.36
156 Faragó, Iván252750 38.49
157 Liberzon, Vladimir M252759 47.52
158 Groszpeter, Attila252754 24.31
159 Ivkov, Borislav252655 50.88
160 Cherepkov, Alexander V252564 63.91
161 Kogan, Boris252556
162 Kengis, Edvins252356 25.47
163 Gruenfeld, Yehuda252356 28.59
164 Jansa, Vlastimil252249 41.84
165 Shereshevsky, Mikhail I252274 34.44
166 Jamieson, Robert Murray252275
167 Lobron, Eric252249 24.40
168 Ostermeyer, Peter252252 40.96
169 Ekstroem, Roland252266 28.36
170 Inkiov, Ventzislav252149 28.36
171 Agdestein, Simen252056 17.37
172 Thipsay, Praveen Mahadeo251955 25.13
173 Keene, Raymond251958
174 Ivanov, Alexander V251971 28.41
175 Oll, Lembit251957 18.44
176 Gurgenidze, Bukhuti I251859 50.88
177 Stohl, Igor251755 20.01
178 Unzicker, Wolfgang251655 59.26
179 Mnatsakanian, Eduard A251667 45.81
180 Lukacs, Peter251550 34.22
181 Klovans, Janis251463 49.47
182 Biyiasas, Peter251475 33.86
183 Tseitlin, Mikhail S251360 37.29
184 Yuferov, Sergey N251364 38.82
185 Fedorowicz, John P251355 26.01
186 Pfleger, Helmut251254 41.15
187 Cámpora, Daniel H251254 27.25
188 Hansen, Curt251251 20.03
189 Tatai, Stefano251253 46.52
190 Hulak, Krunoslav251250 33.35
191 Nikolac, Juraj251165 52.44
192 Bukic, Enver251164 46.83
193 Plaskett, Jim251052 24.53
194 McKay, Roderick M251075 32.63
195 Suetin, Alexey S250957 57.87
196 Zapata, Alonso250951 26.11
197 Pachmann, Ludek250970 60.38
198 Gurevich, Mikhail N250963 25.61
199 Szabó, László250875 67.53
200 Vukic, Milan250754 41.11
201 Schussler, Harry250751 27.27
202 Kindermann, Stefan250650 24.76
203 Kudrin, Sergey250650 25.06
204 Shamkovich, Leonid A250653 61.33
205 Nogueiras, Jesus250555 25.20
206 Matanovic, Aleksandar250471 54.35
207 Schmidt, Wlodzimierz250349 41.47
208 Franco Ocampos, Zenon250259 28.38
209 Olafsson, Helgi250252 28.12
210 Olafsson, Fridrik250160 49.68
211 Spraggett, Kevin B250156 29.89
212 Espig, Lutz250152 35.73
213 Dizdar, Goran250055 25.82
214 Kruppa, Yuri250067 20.27
215 Djuric, Stefan250054 29.18
216 Lein, Anatoly249953 53.51
217 Ree, Hans249850 40.04
218 Bikhovsky, Avigdor I249768 29.57
219 Řgaard, Leif249758 32.73
220 Gurevich, Dmitry249650 28.05
221 Velikov, Petar249649 33.50
222 Malich, Burkhard G249564 47.84
223 Donchev, Dimitar I249551 26.19
224 Murey, Yakov249452 43.16
225 Bönsch, Uwe249451 25.95
226 Raicevic, Momcilo249366
227 Mednis, Edmar J249259 47.52
228 Antoshin, Vladimir S249263 55.38
229 Soltis, Andrew E249263 37.34
230 Arnason, Jon L249250 23.88
231 Matulovic, Milan249154 49.30
232 Díez del Corral, Jesús249168 51.48
233 García Gonzáles, Guillermo249150 30.81
234 Ghinda, Mihail Viorel249057 35.18
235 Sunye Neto, Jaime248954 27.41
236 Pétursson, Margeir248851 24.62
237 Portisch, Ferenc248755 45.47
238 Rukavina, Josip248755 41.84
239 Greenfeld, Alon248757 20.45
240 Wolf, Volker248765 27.06
241 Georgiev, Krum248651 26.35
242 Rodriguez, Amador248653 28.06
243 Benko, Pal C248660 56.21
244 Drasko, Milan248559 21.81
245 Sigurjónsson, Gudmundur248452 37.01
246 Szekely, Peter248454 29.64
247 Pytel, Krzysztof248455 39.37
248 Renman, Nils Gustaf248465
249 Podzielny, Karl Heinz248459 30.05
250 Lechtynsky, Jiri248350 36.85
251 Plachetka, Jan248349 39.62
252 Mortensen, Erling248251 29.48
253 London, Dimitri248168 21.86
254 Schneider, Lars Ake248155
255 Hjartarson, Jóhann248151 21.64
256 Spassov, Liuben248150 41.52
257 Zuckerman, Bernard248170 41.50
258 Tringov, Georgy P248153 47.56
259 Bilek, István248062 52.13
260 Mariotti, Sergio248066 38.14
261 Vera, Reynaldo248052 23.73
262 Lukin, Andrei M248053 36.09
263 Gruenberg, Hans Ulrich247854 28.72
264 Govedarica, Radovan247865 36.63
265 Radulov, Ivan247850 45.73
266 Padevsky, Nikola B247863 51.34
267 Raicevic, Vladimir247760 35.41
268 Dlugy, Maxim247756 18.67
269 Kraidman, Yair247765 51.91
270 Zaitsev, Igor A247660 46.34
271 Arbakov, Valentin247671 32.67
272 Klaric, Zlatko247668 27.93
273 Kaidanov, Gregory S247563 24.96
274 Mirkovic, Slobodan247258 26.17
275 Popov, Luben247256 48.67
276 Hebden, Mark247153 26.62
277 Ernst, Thomas247162 24.12
278 Sahovic, Dragutin247152 44.14
279 Benjamin, Joel L247156 20.55
280 Wiedenkeller, Michael247161 21.72
281 Petrushin, Alexander I247057 37.55
282 Rivas Pastor, Manuel247052 24.21
283 Zaltsman, Vitaly F247060 42.92
284 Gutman, Lev246953 39.01
285 Scheeren, Peter246958 29.17
286 Birnboim, Nathan246861 33.84
287 Gruen, Peter246857 27.71
288 Gomez Baillo, Jorge H246768 25.45
289 Tavadian, Ragik246768
290 Barczay, Laszlo246758 48.61
291 Hug, Werner246765 32.05
292 Karner, Hillar246663 49.17
293 Tischbierek, Raj246652 22.02
294 Cifuentes Parada, Roberto246573 26.77
295 Vokác, Marek246562 25.81
296 Stoica, Valentin246562 34.62
297 Peters, John A246459 33.64
298 Nun, Jiri246362 27.17
299 Haik, Aldo246359 31.94
300 Zilberstein, Valery I246374 41.46
301 Toth, Bela246355 41.45
302 Feustel, Bernd246264 30.03
303 Shvidler, Eliahu246258 24.78
304 Ambroz, Jan246258 30.28
305 Aseev, Konstantin N246255 23.94
306 Kirov Ivanov, Nino246252 39.06
307 Lederman, Leon246270 37.35
308 Taulbut, Shaun M246268 26.72
309 Eslon, Jaan246263 32.57
310 Rajkovic, Dusan246154 42.29
311 Legky, Nikolay A246167 29.47
312 Pribyl, Josef246151 36.96
313 Hecht, Hans-Joachim246166 45.67
314 Lanka, Zigurds246069 24.36
315 Hartston, William R246065 37.13
316 Botterill, George Steven246071
317 Pekarek, Ales245971 22.79
318 Kishnev, Sergey245961 27.91
319 Adamski, Jan245850 40.88
320 Robatsch, Karl245858 55.95
321 Hamann, Svend245864 43.97
322 Van der Sterren, Paul245751 28.54
323 Ost Hansen, Jacob245756
324 Georgiev, Kiril245752 18.84
325 Szmetan, Jorge245668 34.34
326 Bastian, Herbert245560 31.80
327 Prandstetter, Eduard245553 35.79
328 Van Wijgerden, Cornelis245558 34.35
329 Spiridonov, Nikola245551 46.59
330 Lazic, Miroljub245468 18.26
331 Velickovic, Sasa245461 33.49
332 Bany, Jerzy245358 23.57
333 Schweber, Samuel245370 48.20
334 Frias, Victor J245357 28.64
335 Sharif, Mershad245372 32.22
336 Kristiansen, Jens245352 32.35
337 Helmers, Knut J245257 27.65
338 Sznapik, Aleksander245249 33.64
339 Bisguier, Arthur B245268 54.97
340 Bjelajac, Milan245259 36.54
341 Bajovic, Milan245273
342 Hebert, Jean245266 26.88
343 Hawelko, Marek245164 25.14
344 Cvitan, Ognjen245155 22.96
345 Ermenkov, Evgenij245153 35.00
346 Ligterink, Gert245152 34.87
347 Rodriguez, Ruben245068 37.81
348 Lau, Ralf244959 24.94
349 Kuzmin, Alexey244964 21.56
350 Nurkic, Sahbaz244865 28.54
351 Nei, Iivo244866 52.91
352 Fernandez Garcia, Jose Luis244863 30.41
353 Knezevic, Milorad244850 47.91
354 Neckar, Lubomir244766 34.16
355 Bohm, Hans244755 34.71
356 Dzuban, Oleg I244666
357 Kestler, Hans-Günter244668 44.80
358 Mascarinas, Rico244670 31.58
359 Hjorth, Greg244560 21.21
360 Martinovic, Slobodan244452 39.18
361 Saidy, Anthony F244471 47.37
362 Levitina, Irina S244356 30.31
363 Forintos, Gyözö V244360 49.17
364 Yrjola, Jouni244360 24.93
365 Hermann, Manfred244360 42.08
366 Bass, Leonid244366 27.33
367 Thorsteins, Karl244260 19.96
368 Rogers, Ian244253 24.27
369 Garcia Palermo, Carlos244259 30.83
370 Donner, Johannes H244270 57.23
371 Giorgadze, Giorgi244272 19.96
372 Ardiansyah, Haji244156 32.82
373 Vilela, Jose Luis244152 31.53
374 Nun, Josef244161 51.19
375 Bronstein, Luis244168 38.33
376 McCambridge, Vincent244154 24.56
377 Hodgson, Julian M244159 21.18
378 Ornstein, Axel244154 32.43
379 Barlov, Dragan244151 27.67
380 Shaboian, V.244168
381 Staniszewski, Piotr244057 18.07
382 Goehring, Karl Heinz244064
383 Strauss, David J244067 38.15
384 Cabrilo, Goran243953 26.24
385 Semkov, Semko243959 24.59
386 Doda, Zbigniew243863 53.61
387 Wockenfuss, Klaus243857 33.09
388 Grigorov, Jordan N243857 30.81
389 Ilic, Zoran243862 21.16
390 Rubinetti, Jorge A243769 39.50
391 Watson, John L243766 33.07
392 Rodriguez Vargas, Orestes243671 41.24
393 Heinbuch, Detlef243666 23.72
394 Makropoulos, Georgios243671 31.01
395 Sygulski, Artur243555 24.19
396 Eising, Johannes243573 49.33
397 Wittmann, Walter243563 36.55
398 Piesina, Gintautas243567 32.48
399 Harandi, Khosro243568 34.08
400 Ghitescu, Theodor243568 50.68
401 Bellin, Robert243466 32.25
402 Schneider, Attila243455 29.46
403 Brinck Claussen, Bjorn243355
404 Garcia Martinez, Silvino243351 40.24
405 Tompa, Janos243270 37.42
406 Lukov, Valentin243253 28.80
407 Lalev, Dimitar243259 24.70
408 Rantanen, Yrjo A243257 34.44
409 Littlewood, Paul E243160 28.70
410 Hase, Juan Carlos243167
411 Wirthensohn, Heinz243158 33.40
412 Foisor, Ovidiu243161 25.48
413 Damljanovic, Branko243157 23.29
414 Westerinen, Heikki MJ243052 40.42
415 Gross, Stefan243056 35.09
416 Krnic, Zdenko242859 36.99
417 Abreu, Jorge D242869 26.29
418 Dobrovolsky, Ladislav242856 33.77
419 Casper, Thomas242756 25.54
420 Danailov, Silvio242755 23.44
421 Wilder, Michael242768 22.04
422 Pliester, Leon242767 30.11
423 Ravikumar, Vaidyanathan242662 24.76
424 Jakobsen, Ole242653 41.94
425 Ilinsky, Vladimir242668
426 Hernandez, Roman242553 34.85
427 Bischoff, Klaus242555 23.31
428 Fedder, Steen242466 33.29
429 Arkell, Keith C242366 23.73
430 Moskalenko, Viktor242267 23.82
431 Handoko, Edhi242256 24.09
432 Bouaziz, Slim242257 34.45
433 Palacios, Antonio242271 31.88
434 Hausner, Ivan242162 32.46
435 Kaiszauri, Konstanty242166 31.92
436 Adianto, Utut242158 19.54
437 Sideif Sade, Fikret I242164 32.74
438 Kelecevic, Nedeljko242063 37.55
439 Hartoch, Robert G242065
440 Seppeur, Reinhold242064 29.13
441 Imanaliev, Taalaibek241972
442 Tisdall, Jonathan D241959 26.09
443 Qi Jingxuan241972 36.89
444 Cramling, Dan241861 25.65
445 Piasetski, Leon David241868
446 Filipovic, Branko241772 26.98
447 Langeweg, Kick241755 47.56
448 Kunsztowicz, Uwe241665 40.70
449 Martin, Andrew D241657 27.37
450 Banas, Jan241655 37.32
451 Bielczyk, Jacek241655 31.60
452 Bojkovic, Slobodan241567 39.18
453 Zahariev, Zahari241561 23.05
454 Bergstrom, Christer241572 26.01
455 Moehring, Guenther241462 47.85
456 Bellon Lopez, Juan Manuel241455 34.39
457 Cvetkovic, Srdjan241356 38.59
458 Borm, Franciscus WM241362
459 Tiller, Bjorn241260 25.70
460 Nowak, Ignacy241257 35.72
461 Djukic, Zeljko241157 25.30
462 Zichichi, Alvise241158 46.24
463 Loginov, Valery A241173 28.80
464 Lengyel, Levente241160 51.30
465 Damjanovic, Mato241164 57.52
466 Trifunov, Dimitar241072 20.73
467 Martin Gonzalez, Angel241069 31.74
468 Rocha, Antonio240974 40.30
469 Van Voorthuijsen, PW.240969
470 Reefschlaeger, Helmut240960 40.48
471 Rakic, Tomislav240961 49.88
472 Osmanovic, Kemal240871 43.56
473 Danner, Georg240761 37.92
474 Klundt, Klaus240773 42.76
475 Akesson, Ralf240761 23.64
476 Pritchett, Craig William240768
477 Maki, Veijo240759 25.81
478 Herzog, Adolf240763 31.31
479 Bukal, Vladimir Sr240670 44.91
480 Pelts, Roman240574 47.55
481 Kataev, Simcho240567
482 Szymczak, Zbigniew240452 32.74
483 Kagan, Shimon240360 42.48
484 Gobet, Fernand240254 22.63
485 Stempin, Pawel240253 25.21
486 Hartmann, Wolfram240269 28.35
487 Meister, Yakov240268 29.05
488 Kuligowski, Adam240154 28.77
489 Ochoa de Echaguen, F Javier240159 30.07
490 Horvath, Tamas240052 32.93
491 Budde, Vladimir239965 31.77
492 Berg, Klaus239953 24.41
493 Filipowicz, Andrzej239971 46.38
494 Doncevic, Dario239863 26.72
495 Paehtz, Thomas Sr239752 28.07
496 Sisniega, Marcel239758 25.17
497 Tomaszewski, Roman239769 24.37
498 Braga, Fernando239759 26.22
499 Gauglitz, Gernot239771 22.26
500 Orso, Miklos239670 28.31

These ratings, calculated as of September 30, 1984, incorporate all games (against rated opponents) played in the time between October 1, 1983 and September 30, 1984, along with the ratings that were already calculated as of September 30, 1983. 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, 1984. This represents the player's estimated strength on October 1, 1984.

+/- 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, 1984. The +/- value represents the standard deviation of that estimate; the player's true strength on October 1, 1984 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, 1984. 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, 1984. 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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