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Top 10 active players as of December 31, 1984


Top 500 active players as of December 31, 1984

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E28034844.8% #333.61
2 Kasparov, Garry K27964938.1% #321.72
3 Beliavsky, Alexander G2728494.4% #1331.04
4 Korchnoi, Viktor L2708491.8% #2053.77
5 Vaganian, Rafael A2705501.8% #2133.21
6 Timman, Jan H2702471.3% #2233.05
7 Polugaevsky, Lev A2697511.3% #2650.11
8 Dolmatov, Sergey V2687541.2% #3125.86
9 Portisch, Lajos2682490.5% #3347.74
10 Agzamov, Georgy T2681520.7% #3430.32
11 Ribli, Zoltán2680500.5% #3533.32
12 Hübner, Robert2671490.3% #4036.15
13 Eingorn, Viacheslav S2666530.3% #4528.10
14 Smyslov, Vassily V2659510.2% #4963.77
15 Nunn, John D M2655490.2% #5129.68
16 Andersson, Ulf2655480.2% #5133.51
17 Ljubojevic, Ljubomir2655500.2% #5234.16
18 Psakhis, Lev B2653490.1% #5326.09
19 Romanishin, Oleg M2653490.1% #5332.97
20 Gulko, Boris F2650520.2% #5837.89
21 Tukmakov, Vladimir B2648500.1% #5838.79
22 Spassky, Boris V2648490.1% #5847.91
23 Tal, Mikhail2647490.1% #5748.14
24 Miles, Anthony J264047 #6229.69
25 Lerner, Konstantin Z2639530.1% #6834.84
26 Lputian, Smbat G2634510.1% #7126.88
27 Jussupow, Artur M2634510.1% #7124.88
28 Novikov, Igor A263052 #7522.61
29 Razuvaev, Yury S262852 #7739.22
30 Petrosian, Arshak B262852 #7731.04
31 Balashov, Yury S262650 #7935.80
32 Sokolov, Andrey Y262551 #7921.78
33 Bronstein, David I2625610.1% #8660.87
34 Dorfman, Iosif D262351 #8232.66
35 Nikolic, Predrag262350 #8124.30
36 Vasiukov, Evgeny A2623570.1% #8651.82
37 Seirawan, Yasser262249 #8224.77
38 Kavalek, Lubomir262252 #8341.39
39 Chernin, Alexander M262252 #8324.82
40 Geller, Efim P262151 #8359.83
41 Sveshnikov, Evgeny E262150 #8334.89
42 Gavrikov, Victor N261752 #8827.42
43 Dvoiris, Semen I261057 #9926.16
44 Ehlvest, Jaan260753 #9922.21
45 Sosonko, Gennadi260650 #9841.62
46 Dzindzichashvili, Roman Y260653 #10040.65
47 Christiansen, Larry M260451 #10128.51
48 Dvoretsky, Mark I2604720.2% #11637.06
49 Adorján, András260348 #10034.75
50 Rozentalis, Eduardas260355 #10521.59
51 Tseshkovsky, Vitaly V260251 #10340.27
52 Kochiev, Alexander260254 #10528.77
53 Chandler, Murray G260249 #10224.74
54 Gipslis, Aivars2601630.1% #11247.90
55 Ftácnik, Lubomír260149 #10227.17
56 Makarichev, Sergey Y260054 #10731.12
57 Yurtaev, Leonid259960 #11225.66
58 Chekhov, Valery A259952 #10729.09
59 Browne, Walter S259851 #10635.97
60 Smejkal, Jan259750 #10938.77
61 Malaniuk, Vladimir P259652 #11027.44
62 Salov, Valery B259655 #11320.60
63 Mikhalchishin, Adrian B259451 #11330.12
64 Sax, Gyula259350 #11133.54
65 Parma, Bruno2593740.2% #12943.00
66 Kuzmin, Gennady P259153 #11638.94
67 Zaichik, Gennady L259054 #11827.89
68 Didishko, Vereslav2589660.1% #12835.72
69 Vyzmanavin, Alexey258852 #11924.99
70 Larsen, Bent258851 #11849.82
71 Hort, Vlastimil258748 #11840.96
72 Ubilava, Elizbar E258652 #12134.34
73 Vaisser, Anatoli258551 #12135.82
74 Torre, Eugenio258449 #12133.16
75 Smagin, Sergey258255 #12726.31
76 Eolian, Levon S258261 #13125.29
77 Kupreichik, Viktor D258250 #12335.49
78 Savon, Vladimir A258065 #13744.26
79 Speelman, Jonathan S257750 #12828.25
80 Gheorghiu, Florin257751 #13040.73
81 Yermolinsky, Alex V257757 #13426.72
82 Karlsson, Lars257651 #13129.47
83 Azmaiparashvili, Zurab A257553 #13324.79
84 Pintér, József257453 #13331.14
85 Velimirovic, Dragoljub257451 #13242.63
86 Panno, Oscar R257463 #14149.79
87 Popovic, Petar257352 #13425.88
88 Kharitonov, Andrey Y257352 #13425.74
89 Tarjan, James E257254 #13632.86
90 Timoshchenko, Gennady257165 #14635.68
91 Yudasin, Leonid G257052 #13825.40
92 Glek, Igor V256957 #14223.15
93 Barua, Dibyendu256963 #14518.18
94 Gurevich, Mikhail N256756 #14225.86
95 Stean, Michael F256761 #14631.32
96 Short, Nigel D256749 #13919.58
97 Bagirov, Vladimir K256553 #14348.37
98 Byrne, Robert E256555 #14456.70
99 Anikaev, Yury256460 #14736.51
100 Polovodin, Igor A256262 #15129.77
101 Guseinov, Aidyn256258 32.99
102 Knaak, Rainer F256250 31.79
103 Podgaets, Mikhail Y256260 37.44
104 Suba, Mihai255950 37.58
105 Marjanovic, Slavoljub255750 29.98
106 Korzubov, Peter255754 22.99
107 Kurajica, Bojan255649 37.13
108 Cebalo, Mišo255552 39.90
109 Georgadze, Tamaz V255453 37.14
110 Mestel, A Jonathan255451 27.80
111 Chiburdanidze, Maia G255254 23.95
112 Kholmov, Ratmir D255252 59.63
113 Shneider, Aleksandr255257 22.61
114 Quinteros, Miguel A255253 37.01
115 Vitolinš, Alvis255162 38.54
116 Sturua, Zurab255061 25.56
117 Veingold, Aleksander255060 31.22
118 Panchenko, Alexander N254855 31.24
119 Rashkovsky, Nukhim N254851 38.70
120 Alburt, Lev O254751 39.36
121 van der Wiel, John T H254749 25.39
122 Kremenetsky, Anatoly M254763 45.96
123 deFirmian, Nicholas E254649 27.43
124 Zilberman, Nathan R254668 44.66
125 Vorotnikov, Vladislav V254658 37.37
126 Palatnik, Semen A254667 34.76
127 Gligoric, Svetozar254651 61.91
128 Taimanov, Mark E254553 58.90
129 Ivanovic, Božidar254549 38.35
130 Naumkin, Igor254567 19.39
131 Mokrý, Karel254551 25.90
132 Gorelov, Sergey G254554 27.37
133 Reshevsky, Samuel H254559 73.10
134 Lombardy, William J254358 47.07
135 Uhlmann, Wolfgang254152 49.76
136 Henley, Ron W254152 28.07
137 Pigusov, Evgeny254061 23.75
138 Gufeld, Eduard E253857 48.78
139 Shereshevsky, Mikhail I253874 34.69
140 Zapata, Alonso253850 26.36
141 Gurgenidze, Bukhuti I253757 51.13
142 Ostermeyer, Peter253652 41.22
143 Mnatsakanian, Eduard A253459 46.07
144 Abramovic, Boško253450 33.88
145 Hazai, Laszlo253352 31.55
146 Nikolic, Zivoslav253355 31.05
147 Vogt, Lothar H253251 32.95
148 Agdestein, Simen253155 17.63
149 Wedberg, Tom253151 31.10
150 Hansen, Curt253151 20.29
151 Fedorowicz, John P253053 26.26
152 Grigorian, Karen A253065 37.32
153 Weinstein, Norman252974 34.24
154 Cherepkov, Alexander V252963 64.17
155 Graf, Alexander252960 22.35
156 Simic, Radoslav252852 36.56
157 Ivanov, Igor V252854 37.97
158 Nemet, Ivan252770 41.71
159 Zakharov, Alexander V252675 41.23
160 Meduna, Eduard252651 34.30
161 Kogan, Boris252556
162 Nogueiras, Jesus252552 25.45
163 Liberzon, Vladimir M252560 47.77
164 Matanovic, Aleksandar252561 54.61
165 Keene, Raymond252458
166 Kovacevic, Vladimir252451 42.76
167 Tseitlin, Mikhail S252363 37.54
168 Ekstroem, Roland252166 28.61
169 Oll, Lembit252160 18.69
170 Andrianov, Nikolai252160 23.03
171 Lukacs, Peter252150 34.48
172 Inkiov, Ventzislav252049 28.62
173 Ivkov, Borislav252054 51.13
174 Osnos, Viacheslav V252063 49.44
175 Plaskett, Jim251950 24.79
176 Najdorf, Miguel251963 74.71
177 Vladimirov, Evgeny Y251964 27.94
178 Lobron, Eric251948 24.65
179 Wolf, Volker251967 27.32
180 Groszpeter, Attila251752 24.56
181 Cámpora, Daniel H251757 27.50
182 Faragó, Iván251550 38.75
183 Unzicker, Wolfgang251554 59.51
184 Yuferov, Sergey N251464 39.08
185 Bukic, Enver251466 47.08
186 Hulak, Krunoslav251350 33.60
187 Sunye Neto, Jaime251254 27.66
188 Klovans, Janis251263 49.73
189 Kengis, Edvins251255 25.72
190 Lein, Anatoly251054 53.76
191 Suetin, Alexey S251059 58.12
192 Ivanov, Alexander V251071 28.66
193 Pachmann, Ludek251070 60.64
194 Mednis, Edmar J251061 47.77
195 Kudrin, Sergey250949 25.32
196 Tatai, Stefano250852 46.77
197 Olafsson, Helgi250652 28.38
198 Yrjola, Jouni250655 25.19
199 Shamkovich, Leonid A250653 61.58
200 Thipsay, Praveen Mahadeo250654 25.38
201 Vukic, Milan250556 41.37
202 Stohl, Igor250555 20.26
203 Velikov, Petar250549 33.75
204 Franco Ocampos, Zenon250459 28.63
205 Csom, István250451 44.58
206 Schussler, Harry250452 27.52
207 Ree, Hans250350 40.29
208 Gruenfeld, Yehuda250354 28.84
209 Malich, Burkhard G250370 48.09
210 Gurevich, Dmitry250351 28.30
211 Kindermann, Stefan250249 25.01
212 Olafsson, Fridrik250261 49.92
213 Rodriguez, Amador250251 28.31
214 Szekely, Peter250153 29.90
215 Pfleger, Helmut250154 41.40
216 Spraggett, Kevin B250156 30.14
217 García Gonzáles, Guillermo250150 31.06
218 Murey, Yakov250152 43.41
219 Pétursson, Margeir250051 24.88
220 Jansa, Vlastimil249949 42.09
221 Donchev, Dimitar I249951 26.44
222 Greenfeld, Alon249755 20.70
223 Arnason, Jon L249750 24.13
224 Drasko, Milan249656 22.07
225 Espig, Lutz249654 35.98
226 Djuric, Stefan249652 29.43
227 Lukin, Andrei M249653 36.34
228 Matulovic, Milan249555 49.56
229 Dizdar, Goran249456 26.07
230 Ghinda, Mihail Viorel249455 35.43
231 Soltis, Andrew E249363 37.59
232 Díez del Corral, Jesús249372 51.73
233 Podzielny, Karl Heinz249358 30.31
234 Raicevic, Momcilo249266
235 Benjamin, Joel L249153 20.80
236 Rukavina, Josip249057 42.09
237 Mariotti, Sergio248968 38.39
238 Nikolac, Juraj248962 52.69
239 Ionov, Sergey248974 22.98
240 Hjartarson, Jóhann248950 21.90
241 Georgiev, Krum248851 26.60
242 Sigurjónsson, Gudmundur248753 37.27
243 Tringov, Georgy P248754 47.82
244 Li Zunian248762 26.97
245 London, Dimitri248768 22.11
246 Bilek, István248761 52.39
247 Kishnev, Sergey248660 28.16
248 Rogers, Ian248651 24.52
249 Pytel, Krzysztof248653 39.63
250 Feustel, Bernd248567 30.28
251 Benko, Pal C248560 56.46
252 Schneider, Lars Ake248555
253 Portisch, Ferenc248456 45.73
254 Antoshin, Vladimir S248462 55.63
255 Haik, Aldo248457 32.20
256 Renman, Nils Gustaf248465
257 Georgiev, Kiril248451 19.09
258 Zuckerman, Bernard248370 41.75
259 Giorgadze, Giorgi248272 20.22
260 Zaltsman, Vitaly F248259 43.18
261 Bikhovsky, Avigdor I248269 29.82
262 Gruenberg, Hans Ulrich248156 28.97
263 Spassov, Liuben248050 41.77
264 Govedarica, Radovan248065 36.88
265 Kraidman, Yair248065 52.16
266 Kirov Ivanov, Nino248051 39.31
267 Mortensen, Erling247952 29.74
268 Gutman, Lev247951 39.26
269 Zaitsev, Igor A247860 46.59
270 Legky, Nikolay A247866 29.72
271 Kruppa, Yuri247866 20.53
272 Wiedenkeller, Michael247861 21.97
273 Dlugy, Maxim247856 18.92
274 Bönsch, Uwe247851 26.21
275 Radulov, Ivan247850 45.98
276 Lechtynsky, Jiri247750 37.10
277 Antunes, Antonio247773 22.90
278 Toth, Bela247653 41.70
279 Popov, Luben247657 48.92
280 Schmidt, Wlodzimierz247650 41.72
281 Raicevic, Vladimir247560 35.66
282 Hermann, Manfred247461 42.33
283 Vokác, Marek247462 26.07
284 Plachetka, Jan247449 39.87
285 Duer, Arne247371 25.47
286 Sahovic, Dragutin247252 44.40
287 Petrushin, Alexander I247259 37.81
288 Gruen, Peter247258 27.96
289 Kaidanov, Gregory S247163 25.22
290 Shvidler, Eliahu247157 25.03
291 Karner, Hillar247064 49.43
292 Arbakov, Valentin247071 32.92
293 Lederman, Leon247070 37.60
294 Padevsky, Nikola B247063 51.59
295 Řgaard, Leif247058 32.98
296 Prandstetter, Eduard246952 36.04
297 Hebden, Mark246954 26.88
298 Tavadian, Ragik246968
299 Nun, Jiri246864 27.43
300 Botterill, George Steven246864
301 Mirkovic, Slobodan246758 26.43
302 Frias, Victor J246756 28.89
303 Aseev, Konstantin N246753 24.20
304 Rajkovic, Dusan246754 42.54
305 Seret, Jean Luc246766
306 Lanka, Zigurds246768 24.61
307 Ardiansyah, Haji246656 33.07
308 Ost Hansen, Jacob246658
309 Rodriguez, Ruben246671 38.07
310 Van der Sterren, Paul246651 28.79
311 Vera, Reynaldo246653 23.98
312 Zilberstein, Valery I246574 41.72
313 Rivas Pastor, Manuel246551 24.47
314 Ernst, Thomas246459 24.37
315 Heinbuch, Detlef246461 23.97
316 Fernandez Garcia, Jose Luis246461 30.66
317 Peters, John A246459 33.89
318 Tischbierek, Raj246353 22.27
319 Hamann, Svend246270 44.23
320 Klaric, Zlatko246165 28.19
321 Van Wijgerden, Cornelis246157 34.61
322 Morovic Fernández, Iván E246169 21.77
323 Pelts, Roman245967 47.80
324 Hug, Werner245961 32.31
325 Barlov, Dragan245950 27.91
326 Barczay, Laszlo245859 48.86
327 Leow Leslie M245871
328 Scheeren, Peter245856 29.42
329 Bany, Jerzy245858 23.82
330 Sharif, Mershad245872 32.47
331 Ambroz, Jan245759 30.54
332 Bisguier, Arthur B245668 55.23
333 Hartston, William R245665 37.38
334 Ghitescu, Theodor245665 50.93
335 Klundt, Klaus245671 43.02
336 Birnboim, Nathan245660 34.09
337 Velickovic, Sasa245561 33.75
338 Taulbut, Shaun M245574 26.96
339 Adamski, Jan245450 41.14
340 Cifuentes Parada, Roberto245466 27.03
341 Hawelko, Marek245464 25.39
342 Vilela, Jose Luis245351 31.78
343 Eslon, Jaan245362 32.82
344 Bjelajac, Milan245363 36.80
345 Ermenkov, Evgenij245352 35.26
346 Flear, Glenn C245355 25.88
347 Ligterink, Gert245252 35.12
348 Arkell, Keith C245264 23.97
349 Gomez Baillo, Jorge H245264 25.70
350 Spiridonov, Nikola245150 46.84
351 Bajovic, Milan245173
352 Forintos, Gyözö V245161 49.42
353 Garcia Palermo, Carlos245059 31.08
354 Martinovic, Slobodan245051 39.43
355 Cvitan, Ognjen244956 23.22
356 Pribyl, Josef244951 37.22
357 Strauss, David J244966 38.40
358 Nei, Iivo244966 53.17
359 Pekarek, Ales244871 23.04
360 McCambridge, Vincent244854 24.81
361 Schweber, Samuel244767 48.46
362 Lukov, Valentin244752 29.05
363 Wirthensohn, Heinz244756 33.66
364 Bohm, Hans244755 34.95
365 Saidy, Anthony F244670 47.62
366 Levitina, Irina S244657 30.56
367 Helmers, Knut J244656 27.90
368 Stoica, Valentin244561 34.88
369 Lau, Ralf244558 25.20
370 Watson, John L244566 33.32
371 Sznapik, Aleksander244449 33.89
372 Szmetan, Jorge244369 34.60
373 Moskalenko, Viktor244366 24.07
374 Qi Jingxuan244262 37.14
375 Staniszewski, Piotr244257 18.32
376 Sygulski, Artur244156 24.44
377 Rubinetti, Jorge A244173 39.75
378 Bass, Leonid244166 27.59
379 Rodriguez Vargas, Orestes244071 41.49
380 Bellin, Robert244067 32.50
381 Donner, Johannes H244070 57.48
382 Bronstein, Luis243970 38.58
383 Mascarinas, Rico243964 31.83
384 Kaiszauri, Konstanty243871 32.18
385 Banas, Jan243754 37.58
386 Eising, Johannes243773 49.59
387 Dzuban, Oleg I243766
388 Doda, Zbigniew243663 53.86
389 Harandi, Khosro243668 34.33
390 Schneider, Attila243657 29.71
391 Nurkic, Sahbaz243675 28.80
392 Shaboian, V.243668
393 Neckar, Lubomir243567 34.41
394 Piesina, Gintautas243567 32.73
395 Kuzmin, Alexey243463 21.81
396 Kestler, Hans-Günter243369 45.05
397 Ornstein, Axel243354 32.69
398 Ochoa de Echaguen, F Javier243358 30.32
399 Reefschlaeger, Helmut243260 40.73
400 Handoko, Edhi243258 24.34
401 Hecht, Hans-Joachim243263 45.92
402 Tompa, Janos243270 37.67
403 Knezevic, Milorad243250 48.17
404 Seppeur, Reinhold243263 29.38
405 Gross, Stefan243157 35.34
406 Lalev, Dimitar243159 24.95
407 Derikum, Axel243165 30.63
408 Kristiansen, Jens243151 32.60
409 Dobrovolsky, Ladislav243156 34.02
410 Danailov, Silvio243055 23.69
411 Skembris, Spyridon243056 26.86
412 Hernandez, Roman243053 35.11
413 Goehring, Karl Heinz243066
414 Thorsteins, Karl243059 20.22
415 Semkov, Semko242961 24.84
416 Tisdall, Jonathan D242960 26.35
417 Grigorov, Jordan N242957 31.06
418 Hase, Juan Carlos242968
419 Bergstrom, Christer242973 26.26
420 Loginov, Valery A242770 29.05
421 Cabrilo, Goran242753 26.50
422 Wockenfuss, Klaus242757 33.34
423 Djukic, Zeljko242763 25.55
424 Martin, Andrew D242755 27.62
425 Pliester, Leon242767 30.36
426 Abreu, Jorge D242671 26.54
427 Foisor, Ovidiu242662 25.73
428 Littlewood, Paul E242664 28.95
429 Jakobsen, Ole242553 42.20
430 Nun, Josef242565 51.44
431 Ilinsky, Vladimir242568
432 Bischoff, Klaus242555 23.56
433 Sideif Sade, Fikret I242469 32.99
434 Adianto, Utut242465 19.79
435 Casper, Thomas242456 25.79
436 Zueger, Beat242456 23.58
437 Hodgson, Julian M242462 21.43
438 Westerinen, Heikki MJ242353 40.68
439 Kunsztowicz, Uwe242266 40.95
440 Brinck Claussen, Bjorn242255
441 Garcia Martinez, Silvino242251 40.49
442 Hartoch, Robert G242265
443 Liang Jinrong242164 24.61
444 Robatsch, Karl242058 56.21
445 Piasetski, Leon David242068
446 Imanaliev, Taalaibek242072
447 Bielczyk, Jacek241956 31.86
448 Klinger, Josef241963 17.57
449 Kagan, Shimon241960 42.73
450 Bastian, Herbert241859 32.06
451 Ilic, Zoran241859 21.41
452 Wittmann, Walter241857 36.80
453 Hjorth, Greg241858 21.46
454 Sher, Miron N241874 32.51
455 Danner, Georg241760 38.18
456 Hausner, Ivan241665 32.71
457 Majorovas, Vitalijus241665 23.73
458 Borm, Franciscus WM241662
459 Lengyel, Levente241660 51.55
460 Filipovic, Branko241572 27.23
461 Krnic, Zdenko241459 37.25
462 Cramling, Dan241461 25.90
463 Zahariev, Zahari241461 23.31
464 Wilder, Michael241468 22.29
465 Van Riemsdijk, Herman C241363 36.35
466 Barbero, Gerardo F241368 23.36
467 Fedder, Steen241368 33.55
468 Langeweg, Kick241355 47.82
469 Van Voorthuijsen, PW.241269
470 Pritchett, Craig William241268
471 Kelecevic, Nedeljko241263 37.80
472 Trifunov, Dimitar241272 20.98
473 Moehring, Guenther241163 48.10
474 Bouaziz, Slim241159 34.71
475 Bukal, Vladimir Sr241071 45.16
476 Cvetkovic, Srdjan241059 38.84
477 Rakic, Tomislav240964 50.14
478 Ravikumar, Vaidyanathan240856 25.01
479 Doncevic, Dario240765 26.96
480 Maki, Veijo240760 26.07
481 Nowak, Ignacy240758 35.96
482 Orso, Miklos240772 28.56
483 Paehtz, Thomas Sr240752 28.32
484 Eng, Holger240758 23.84
485 Szymczak, Zbigniew240653 32.98
486 Horvath, Tamas240652 33.19
487 Stempin, Pawel240653 25.47
488 Bellon Lopez, Juan Manuel240653 34.65
489 Herbrechtsmeier, Christof240668 31.01
490 Damljanovic, Branko240557 23.54
491 Sisniega, Marcel240457 25.43
492 Paulsen, Dirk240460 25.92
493 Williams, Arthur Howard240375
494 Rantanen, Yrjo A240355 34.69
495 Upton, Timothy J240263 26.03
496 Kataev, Simcho240265
497 Osmanovic, Kemal240171 43.82
498 Pils, Walter240159 36.46
499 Rocha, Antonio240067 40.55
500 Filipowicz, Andrzej240074 46.63

These ratings, calculated as of December 31, 1984, incorporate all games (against rated opponents) played in the time between January 1, 1984 and December 31, 1984, along with the ratings that were already calculated as of December 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 December 31, 1984. This represents the player's estimated strength on January 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 January 1, 1985. The +/- value represents the standard deviation of that estimate; the player's true strength on January 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 January 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 December 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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