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Top 10 active players as of October 31, 1984


Top 500 active players as of October 31, 1984

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E28044843.7% #333.44
2 Kasparov, Garry K28014940.6% #321.55
3 Beliavsky, Alexander G2719492.9% #1730.87
4 Timman, Jan H2718482.5% #1732.88
5 Korchnoi, Viktor L2706491.6% #2153.61
6 Polugaevsky, Lev A2697511.3% #2749.94
7 Vaganian, Rafael A2694501.0% #2733.04
8 Portisch, Lajos2693490.9% #2847.57
9 Ribli, Zoltán2686500.7% #3233.15
10 Dolmatov, Sergey V2672550.6% #4325.70
11 Agzamov, Georgy T2672520.5% #4130.15
12 Hübner, Robert2671490.3% #4135.98
13 Ljubojevic, Ljubomir2666490.2% #4533.99
14 Miles, Anthony J2664480.2% #4529.52
15 Eingorn, Viacheslav S2661530.3% #5027.93
16 Andersson, Ulf2659480.1% #4933.34
17 Romanishin, Oleg M2658490.1% #4932.81
18 Smyslov, Vassily V2657510.2% #5263.60
19 Tal, Mikhail2651490.1% #5547.97
20 Spassky, Boris V2650490.1% #5647.75
21 Psakhis, Lev B2650490.1% #5725.92
22 Gulko, Boris F2648530.2% #6137.73
23 Jussupow, Artur M2645510.1% #6124.72
24 Dorfman, Iosif D2642510.1% #6532.50
25 Tukmakov, Vladimir B2641500.1% #6538.63
26 Nikolic, Predrag2640500.1% #6524.14
27 Balashov, Yury S263850 #6735.63
28 Lerner, Konstantin Z2638530.1% #6934.67
29 Salov, Valery B2637580.2% #7320.43
30 Dvoiris, Semen I2632560.1% #7625.99
31 Nunn, John D M262949 #7529.52
32 Ehlvest, Jaan2629560.1% #7922.05
33 Razuvaev, Yury S262852 #7839.06
34 Bronstein, David I2626610.1% #8660.70
35 Chernin, Alexander M262556 #8324.65
36 Seirawan, Yasser262449 #8024.60
37 Ftácnik, Lubomír262448 #7927.00
38 Kavalek, Lubomir262353 #8341.23
39 Geller, Efim P262251 #8459.66
40 Vasiukov, Evgeny A261956 #8951.65
41 Sokolov, Andrey Y261952 #8721.61
42 Lputian, Smbat G261652 #9026.71
43 Gavrikov, Victor N261352 #9327.26
44 Vyzmanavin, Alexey261354 #9524.83
45 Chandler, Murray G261249 #9224.57
46 Sosonko, Gennadi261250 #9341.45
47 Novikov, Igor A261154 #9722.44
48 Kuzmin, Gennady P260854 #9938.78
49 Sveshnikov, Evgeny E260751 #9834.72
50 Adorján, András260649 #9834.58
51 Hort, Vlastimil260548 #9840.80
52 Browne, Walter S260551 #10135.81
53 Petrosian, Arshak B260453 #10230.87
54 Smejkal, Jan260451 #10138.61
55 Dvoretsky, Mark I2602720.2% #11836.89
56 Makarichev, Sergey Y260253 #10530.95
57 Sax, Gyula260150 #10333.37
58 Gipslis, Aivars2601630.1% #11347.73
59 Kupreichik, Viktor D259952 #10735.33
60 Tseshkovsky, Vitaly V259850 #10740.10
61 Christiansen, Larry M259751 #10828.34
62 Vaisser, Anatoli259752 #10935.65
63 Chekhov, Valery A259652 #11028.92
64 Yurtaev, Leonid259558 #11625.50
65 Malaniuk, Vladimir P259551 #11127.28
66 Kochiev, Alexander259554 #11328.60
67 Rozentalis, Eduardas259259 #11921.43
68 Parma, Bruno2590730.1% #13042.84
69 Larsen, Bent259051 #11749.66
70 Torre, Eugenio258849 #11732.98
71 Mikhalchishin, Adrian B258651 #12129.95
72 Didishko, Vereslav258666 #13135.56
73 Zaichik, Gennady L258454 #12427.72
74 Ubilava, Elizbar E258252 #12534.18
75 Averkin, Orest N2580740.1% #14240.68
76 Karlsson, Lars258051 #12729.30
77 Savon, Vladimir A258065 #13644.10
78 Panno, Oscar R258062 #13449.62
79 Yudasin, Leonid G257953 #12925.23
80 Naumkin, Igor257868 #14019.22
81 Timoshchenko, Gennady257764 #13835.51
82 Dzindzichashvili, Roman Y257754 #13140.49
83 Azmaiparashvili, Zurab A257752 #13024.62
84 Yermolinsky, Alex V257556 #13526.55
85 Kharitonov, Andrey Y257553 #13325.57
86 Speelman, Jonathan S257349 #13328.08
87 Knaak, Rainer F257250 #13331.62
88 Podgaets, Mikhail Y257164 #14437.27
89 Eolian, Levon S256961 #14425.12
90 Gheorghiu, Florin256952 #13740.57
91 Anikaev, Yury256858 #14236.34
92 Tarjan, James E256853 #13932.69
93 Barua, Dibyendu256763 #14618.01
94 Short, Nigel D256749 #13919.41
95 Popovic, Petar256653 #14125.71
96 Stean, Michael F256661 #14631.16
97 Bagirov, Vladimir K256553 #14248.21
98 Byrne, Robert E256455 #14556.53
99 Kurajica, Bojan256149 #14436.95
100 Georgadze, Tamaz V256154 #14736.97
101 Cebalo, Mišo256153 39.73
102 Kremenetsky, Anatoly M256064 45.80
103 Korzubov, Peter256053 22.83
104 Smagin, Sergey255959 26.15
105 Polovodin, Igor A255959 29.61
106 Mokrý, Karel255851 25.73
107 Guseinov, Aidyn255756 32.83
108 Velimirovic, Dragoljub255651 42.47
109 Rashkovsky, Nukhim N255552 38.54
110 Mestel, A Jonathan255350 27.63
111 Vitolinš, Alvis255262 38.38
112 Marjanovic, Slavoljub255151 29.82
113 Abramovic, Boško255151 33.71
114 Alburt, Lev O255050 39.19
115 Chiburdanidze, Maia G255056 23.79
116 Ivanovic, Božidar254950 38.19
117 Shneider, Aleksandr254957 22.44
118 Panchenko, Alexander N254954 31.07
119 Graf, Alexander254961 22.18
120 Gligoric, Svetozar254851 61.74
121 Henley, Ron W254851 27.90
122 Gorelov, Sergey G254856 27.20
123 Pintér, József254853 30.97
124 Quinteros, Miguel A254754 36.84
125 Kholmov, Ratmir D254753 59.47
126 Palatnik, Semen A254667 34.60
127 Suba, Mihai254551 37.41
128 Reshevsky, Samuel H254559 72.92
129 Vorotnikov, Vladislav V254458 37.20
130 Zilberman, Nathan R254468 44.49
131 Lombardy, William J254358 46.91
132 van der Wiel, John T H254249 25.23
133 Taimanov, Mark E254253 58.73
134 Glek, Igor V254263 22.98
135 Sturua, Zurab254161 25.40
136 Shereshevsky, Mikhail I254074 34.53
137 Gufeld, Eduard E253957 48.62
138 Veingold, Aleksander253961 31.06
139 Nemet, Ivan253769 41.55
140 Pigusov, Evgeny253760 23.58
141 Weinstein, Norman253774 34.07
142 Vogt, Lothar H253751 32.79
143 Nikolic, Zivoslav253655 30.88
144 Andrianov, Nikolai253461 22.86
145 Ivkov, Borislav253454 50.96
146 Hazai, Laszlo253451 31.38
147 Meduna, Eduard253351 34.14
148 deFirmian, Nicholas E253350 27.26
149 Simic, Radoslav253253 36.39
150 Mnatsakanian, Eduard A253159 45.90
151 Csom, István252951 44.41
152 Wedberg, Tom252951 30.92
153 Faragó, Iván252950 38.58
154 Cherepkov, Alexander V252963 64.00
155 Liberzon, Vladimir M252959 47.61
156 Grigorian, Karen A252865 37.15
157 Osnos, Viacheslav V252864 49.27
158 Uhlmann, Wolfgang252851 49.59
159 Zapata, Alonso252752 26.19
160 Ivanov, Igor V252753 37.81
161 Gruenfeld, Yehuda252656 28.67
162 Kogan, Boris252656
163 Kovacevic, Vladimir252650 42.60
164 Lobron, Eric252549 24.48
165 Ostermeyer, Peter252553 41.05
166 Agdestein, Simen252356 17.46
167 Najdorf, Miguel252263 74.54
168 Keene, Raymond252257
169 Ekstroem, Roland252266 28.44
170 Vladimirov, Evgeny Y252164 27.78
171 Inkiov, Ventzislav252050 28.45
172 Oll, Lembit252057 18.52
173 Unzicker, Wolfgang252056 59.35
174 Thipsay, Praveen Mahadeo251856 25.22
175 Tatai, Stefano251854 46.61
176 Groszpeter, Attila251852 24.39
177 Wolf, Volker251767 27.15
178 Cámpora, Daniel H251657 27.34
179 Lukacs, Peter251550 34.31
180 Tseitlin, Mikhail S251560 37.37
181 Fedorowicz, John P251455 26.09
182 Gurevich, Mikhail N251463 25.69
183 Hansen, Curt251451 20.12
184 Bukic, Enver251365 46.91
185 Klovans, Janis251363 49.56
186 Kudrin, Sergey251250 25.15
187 Gurgenidze, Bukhuti I251260 50.96
188 Kengis, Edvins251256 25.55
189 Yuferov, Sergey N251264 38.91
190 Jansa, Vlastimil251249 41.92
191 Nogueiras, Jesus251255 25.29
192 Ivanov, Alexander V251271 28.50
193 Pachmann, Ludek251070 60.47
194 Vukic, Milan251055 41.20
195 Szabó, László251075 67.62
196 Suetin, Alexey S250958 57.95
197 Schussler, Harry250852 27.35
198 Plaskett, Jim250751 24.62
199 Hulak, Krunoslav250750 33.43
200 Kindermann, Stefan250650 24.84
201 Olafsson, Helgi250552 28.21
202 Matanovic, Aleksandar250571 54.44
203 Shamkovich, Leonid A250453 61.41
204 Sunye Neto, Jaime250355 27.49
205 Pfleger, Helmut250354 41.23
206 Yrjola, Jouni250256 25.02
207 Kruppa, Yuri250267 20.36
208 Bikhovsky, Avigdor I250268 29.65
209 Lein, Anatoly250153 53.59
210 Stohl, Igor250155 20.09
211 Donchev, Dimitar I250051 26.28
212 Espig, Lutz250052 35.82
213 Ree, Hans250050 40.13
214 Franco Ocampos, Zenon250059 28.47
215 Velikov, Petar249949 33.59
216 Szekely, Peter249953 29.73
217 Olafsson, Fridrik249960 49.76
218 Dizdar, Goran249956 25.91
219 Mednis, Edmar J249959 47.61
220 Gurevich, Dmitry249950 28.14
221 Murey, Yakov249952 43.24
222 Spraggett, Kevin B249856 29.97
223 Schmidt, Wlodzimierz249749 41.56
224 Rukavina, Josip249657 41.92
225 Matulovic, Milan249655 49.39
226 Djuric, Stefan249554 29.26
227 Antoshin, Vladimir S249563 55.46
228 Arnason, Jon L249450 23.96
229 Sigurjónsson, Gudmundur249453 37.10
230 Soltis, Andrew E249463 37.42
231 Raicevic, Momcilo249366
232 Malich, Burkhard G249364 47.92
233 García Gonzáles, Guillermo249251 30.89
234 Pétursson, Margeir249252 24.71
235 Nikolac, Juraj249162 52.52
236 Schneider, Lars Ake249156
237 Mariotti, Sergio249068 38.22
238 Řgaard, Leif249059 32.82
239 Podzielny, Karl Heinz249059 30.14
240 Lukin, Andrei M249053 36.17
241 Greenfeld, Alon249057 20.54
242 Díez del Corral, Jesús249071 51.57
243 Pytel, Krzysztof248853 39.46
244 Georgiev, Krum248851 26.44
245 Portisch, Ferenc248755 45.56
246 Tringov, Georgy P248754 47.65
247 Benko, Pal C248660 56.29
248 London, Dimitri248668 21.94
249 Feustel, Bernd248667 30.11
250 Rodriguez, Amador248652 28.15
251 Renman, Nils Gustaf248565
252 Drasko, Milan248559 21.90
253 Bilek, István248362 52.22
254 Lechtynsky, Jiri248350 36.93
255 Zuckerman, Bernard248270 41.58
256 Ghinda, Mihail Viorel248157 35.27
257 Spassov, Liuben248150 41.61
258 Giorgadze, Giorgi248072 20.06
259 Raicevic, Vladimir248060 35.49
260 Vera, Reynaldo248053 23.81
261 Bönsch, Uwe248050 26.04
262 Kraidman, Yair248065 51.99
263 Dlugy, Maxim247956 18.76
264 Mortensen, Erling247952 29.57
265 Govedarica, Radovan247865 36.71
266 Zaltsman, Vitaly F247859 43.01
267 Popov, Luben247857 48.76
268 Radulov, Ivan247750 45.81
269 Sahovic, Dragutin247752 44.23
270 Wiedenkeller, Michael247761 21.81
271 Zaitsev, Igor A247660 46.43
272 Gruenberg, Hans Ulrich247654 28.81
273 Kirov Ivanov, Nino247551 39.14
274 Kaidanov, Gregory S247563 25.05
275 Hjartarson, Jóhann247551 21.73
276 Hebden, Mark247453 26.71
277 Arbakov, Valentin247471 32.76
278 Gutman, Lev247353 39.10
279 Plachetka, Jan247349 39.70
280 Ernst, Thomas247362 24.20
281 Benjamin, Joel L247356 20.64
282 Rivas Pastor, Manuel247352 24.30
283 Klaric, Zlatko247371 28.02
284 Haik, Aldo247260 32.03
285 Padevsky, Nikola B247263 51.42
286 Mirkovic, Slobodan247258 26.26
287 Hermann, Manfred247161 42.17
288 Gruen, Peter247158 27.80
289 Zilberstein, Valery I247074 41.55
290 Scheeren, Peter247058 29.25
291 Tavadian, Ragik247068
292 Vokác, Marek247062 25.90
293 Toth, Bela246955 41.53
294 Karner, Hillar246964 49.26
295 Eslon, Jaan246963 32.66
296 Birnboim, Nathan246862 33.92
297 Rajkovic, Dusan246854 42.37
298 Heinbuch, Detlef246861 23.81
299 Cifuentes Parada, Roberto246675 26.86
300 Petrushin, Alexander I246657 37.64
301 Hug, Werner246667 32.14
302 Lederman, Leon246670 37.43
303 Stoica, Valentin246664 34.71
304 Shvidler, Eliahu246558 24.86
305 Aseev, Konstantin N246555 24.03
306 Van der Sterren, Paul246451 28.62
307 Gomez Baillo, Jorge H246468 25.53
308 Tischbierek, Raj246452 22.10
309 Taulbut, Shaun M246468 26.80
310 Peters, John A246459 33.72
311 Nun, Jiri246462 27.26
312 Legky, Nikolay A246467 29.55
313 Frias, Victor J246457 28.72
314 Prandstetter, Eduard246352 35.88
315 Barczay, Laszlo246158 48.69
316 Lanka, Zigurds246069 24.44
317 Kristiansen, Jens245952 32.43
318 Kishnev, Sergey245961 27.99
319 Hamann, Svend245870 44.06
320 Barlov, Dragan245850 27.75
321 Ost Hansen, Jacob245858
322 Ambroz, Jan245859 30.37
323 Georgiev, Kiril245852 18.92
324 Hartston, William R245765 37.22
325 Sharif, Mershad245772 32.30
326 Rodriguez, Ruben245768 37.90
327 Van Wijgerden, Cornelis245758 34.44
328 Pribyl, Josef245751 37.05
329 Martinovic, Slobodan245651 39.27
330 Velickovic, Sasa245661 33.58
331 Adamski, Jan245650 40.96
332 Bisguier, Arthur B245668 55.06
333 Bany, Jerzy245658 23.66
334 Botterill, George Steven245570
335 Helmers, Knut J245557 27.73
336 Spiridonov, Nikola245551 46.67
337 Bjelajac, Milan245463 36.63
338 Ligterink, Gert245352 34.95
339 Hawelko, Marek245364 25.22
340 Bajovic, Milan245373
341 Cvitan, Ognjen245355 23.06
342 Kuzmin, Alexey245264 21.65
343 Hecht, Hans-Joachim245168 45.76
344 Schweber, Samuel245170 48.29
345 Martin, Andrew D245157 27.45
346 Fernandez Garcia, Jose Luis245164 30.49
347 Pekarek, Ales245171 22.87
348 Ornstein, Axel244955 32.52
349 Bohm, Hans244955 34.79
350 Rogers, Ian244953 24.35
351 Donner, Johannes H244870 57.32
352 Nei, Iivo244866 52.99
353 McCambridge, Vincent244854 24.65
354 Thorsteins, Karl244860 20.05
355 Sznapik, Aleksander244749 33.72
356 Saidy, Anthony F244771 47.46
357 Szmetan, Jorge244768 34.43
358 Garcia Palermo, Carlos244659 30.91
359 Dzuban, Oleg I244666
360 Knezevic, Milorad244550 47.99
361 Levitina, Irina S244456 30.40
362 Klundt, Klaus244471 42.85
363 Forintos, Gyözö V244461 49.25
364 Lukov, Valentin244452 28.89
365 Bass, Leonid244466 27.42
366 Ermenkov, Evgenij244353 35.09
367 Vilela, Jose Luis244352 31.62
368 Ardiansyah, Haji244256 32.90
369 Neckar, Lubomir244165 34.24
370 Bronstein, Luis244170 38.41
371 Hodgson, Julian M244159 21.27
372 Staniszewski, Piotr244157 18.16
373 Kaiszauri, Konstanty244071 32.02
374 Robatsch, Karl244060 56.05
375 Shaboian, V.244068
376 Lau, Ralf243959 25.03
377 Watson, John L243966 33.15
378 Cabrilo, Goran243953 26.33
379 Grigorov, Jordan N243857 30.90
380 Rodriguez Vargas, Orestes243871 41.32
381 Semkov, Semko243759 24.67
382 Sygulski, Artur243755 24.27
383 Littlewood, Paul E243660 28.79
384 Nurkic, Sahbaz243675 28.63
385 Rantanen, Yrjo A243657 34.52
386 Piesina, Gintautas243667 32.56
387 Mascarinas, Rico243671 31.66
388 Doda, Zbigniew243563 53.69
389 Brinck Claussen, Bjorn243555
390 Rubinetti, Jorge A243472 39.58
391 Schneider, Attila243455 29.55
392 Qi Jingxuan243472 36.97
393 Strauss, David J243467 38.23
394 Ghitescu, Theodor243474 50.77
395 Garcia Martinez, Silvino243451 40.32
396 Wittmann, Walter243465 36.63
397 Eising, Johannes243473 49.42
398 Wirthensohn, Heinz243459 33.49
399 Tompa, Janos243370 37.50
400 Harandi, Khosro243368 34.16
401 Nun, Josef243361 51.27
402 Reefschlaeger, Helmut243260 40.56
403 Bellin, Robert243267 32.34
404 Lalev, Dimitar243259 24.79
405 Goehring, Karl Heinz243166
406 Hase, Juan Carlos243068
407 Seppeur, Reinhold243063 29.22
408 Derikum, Axel243065 30.47
409 Kestler, Hans-Günter242969 44.88
410 Jakobsen, Ole242954 42.03
411 Wilder, Michael242968 22.12
412 Gross, Stefan242956 35.17
413 Westerinen, Heikki MJ242952 40.51
414 Pliester, Leon242867 30.20
415 Ilinsky, Vladimir242868
416 Danailov, Silvio242855 23.53
417 Damljanovic, Branko242857 23.37
418 Djukic, Zeljko242763 25.38
419 Dobrovolsky, Ladislav242756 33.85
420 Hebert, Jean242770 26.96
421 Hernandez, Roman242753 34.93
422 Foisor, Ovidiu242662 25.57
423 Ravikumar, Vaidyanathan242662 24.85
424 Sideif Sade, Fikret I242564 32.83
425 Moskalenko, Viktor242567 23.91
426 Cramling, Dan242561 25.74
427 Loginov, Valery A242572 28.88
428 Wockenfuss, Klaus242457 33.17
429 Bischoff, Klaus242455 23.39
430 Abreu, Jorge D242471 26.38
431 Bouaziz, Slim242458 34.54
432 Ilic, Zoran242359 21.24
433 Casper, Thomas242256 25.62
434 Kelecevic, Nedeljko242163 37.64
435 Arkell, Keith C242166 23.81
436 Hartoch, Robert G242165
437 Handoko, Edhi242157 24.17
438 Tisdall, Jonathan D242059 26.18
439 Langeweg, Kick242055 47.65
440 Piasetski, Leon David241968
441 Filipovic, Branko241972 27.07
442 Hausner, Ivan241863 32.54
443 Imanaliev, Taalaibek241872
444 Hjorth, Greg241860 21.30
445 Bielczyk, Jacek241856 31.69
446 Maki, Veijo241762 25.90
447 Kagan, Shimon241760 42.57
448 Bastian, Herbert241759 31.89
449 Bukal, Vladimir Sr241771 44.99
450 Bergstrom, Christer241672 26.09
451 Zichichi, Alvise241558 46.32
452 Banas, Jan241555 37.41
453 Zahariev, Zahari241561 23.14
454 Borm, Franciscus WM241562
455 Krnic, Zdenko241459 37.08
456 Lengyel, Levente241360 51.38
457 Kunsztowicz, Uwe241366 40.79
458 Gerusel, Mathias241374 46.74
459 Fedder, Steen241368 33.38
460 Cvetkovic, Srdjan241357 38.67
461 Pritchett, Craig William241268
462 Bellon Lopez, Juan Manuel241255 34.48
463 Van Voorthuijsen, PW.241269
464 Trifunov, Dimitar241272 20.82
465 Zueger, Beat241157 23.41
466 Moehring, Guenther241162 47.93
467 Akesson, Ralf240961 23.73
468 Rocha, Antonio240874 40.38
469 Osmanovic, Kemal240871 43.65
470 Rakic, Tomislav240763 49.96
471 Kataev, Simcho240767
472 Nowak, Ignacy240757 35.80
473 Szymczak, Zbigniew240752 32.82
474 Herbrechtsmeier, Christof240668 30.84
475 Eng, Holger240658 23.68
476 Doncevic, Dario240665 26.80
477 Berg, Klaus240652 24.49
478 Damjanovic, Mato240566 57.61
479 Danner, Georg240562 38.01
480 Segal, Alexandru Sorin240371 37.07
481 Paulsen, Dirk240260 25.76
482 Adianto, Utut240259 19.62
483 Tempone, Marcelo240267 22.15
484 Stempin, Pawel240253 25.30
485 Meister, Yakov240168 29.14
486 Tiller, Bjorn240160 25.79
487 Tielemann, K.240162
488 Braga, Fernando240059 26.31
489 Ochoa de Echaguen, F Javier240059 30.16
490 Tomaszewski, Roman239969 24.46
491 Filipowicz, Andrzej239871 46.47
492 Horvath, Tamas239852 33.02
493 Budde, Vladimir239867 31.85
494 Orso, Miklos239870 28.40
495 Martin Gonzalez, Angel239871 31.83
496 Knoppert, Erik GJ239773
497 De Wit, Johannes S239765 20.10
498 Kuligowski, Adam239754 28.85
499 Sisniega, Marcel239759 25.26
500 Herzog, Adolf239764 31.40

These ratings, calculated as of October 31, 1984, incorporate all games (against rated opponents) played in the time between November 1, 1983 and October 31, 1984, along with the ratings that were already calculated as of October 31, 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 October 31, 1984. This represents the player's estimated strength on November 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 November 1, 1984. The +/- value represents the standard deviation of that estimate; the player's true strength on November 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 November 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 October 31, 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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