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Top 10 active players as of November 30, 1983


Top 500 active players as of November 30, 1983

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28205166.5% #220.63
2 Karpov, Anatoly E27684917.8% #532.52
3 Vaganian, Rafael A2704491.8% #2132.12
4 Korchnoi, Viktor L2700501.6% #2452.69
5 Portisch, Lajos2696491.2% #2546.65
6 Polugaevsky, Lev A2690511.1% #2949.03
7 Spassky, Boris V2688490.9% #3046.83
8 Timman, Jan H2687470.7% #2931.95
9 Beliavsky, Alexander G2686500.9% #3129.95
10 Andersson, Ulf2684480.6% #3132.43
11 Romanishin, Oleg M2684490.6% #3131.89
12 Ljubojevic, Ljubomir2683490.7% #3233.08
13 Tal, Mikhail2678490.5% #3547.06
14 Smyslov, Vassily V2674520.6% #3962.68
15 Hübner, Robert2673500.4% #3835.07
16 Dolmatov, Sergey V2671520.5% #4024.78
17 Gulko, Boris F2669560.7% #4436.81
18 Petrosian, Tigran V2661500.2% #4654.45
19 Miles, Anthony J2661480.2% #4528.60
20 Ribli, Zoltán2653500.1% #5232.23
21 Psakhis, Lev B2651490.1% #5325.00
22 Eingorn, Viacheslav S2642620.4% #6727.01
23 Hort, Vlastimil2642480.1% #6039.88
24 Malaniuk, Vladimir P2640570.2% #6626.36
25 Jussupow, Artur M2640500.1% #6223.80
26 Nunn, John D M263549 #6428.60
27 Dorfman, Iosif D2634530.1% #6931.58
28 Balashov, Yury S2634500.1% #6734.72
29 Sosonko, Gennadi263350 #6840.53
30 Agzamov, Georgy T2629520.1% #7229.23
31 Dvoiris, Semen I2627580.1% #7825.08
32 Browne, Walter S262750 #7434.89
33 Lputian, Smbat G262451 #7725.79
34 Larsen, Bent262350 #7748.74
35 Geller, Efim P262150 #7958.74
36 Kupreichik, Viktor D262153 #8134.41
37 Bronstein, David I262155 #8359.78
38 Chernin, Alexander M2620580.1% #8523.73
39 Ftácnik, Lubomír261948 #8026.08
40 Tukmakov, Vladimir B261651 #8437.71
41 Tseshkovsky, Vitaly V261650 #8439.18
42 Vyzmanavin, Alexey2615590.1% #9123.91
43 Yurtaev, Leonid261458 #9124.58
44 Kavalek, Lubomir261152 #9040.31
45 Seirawan, Yasser261048 #8923.68
46 Sveshnikov, Evgeny E260851 #9233.80
47 Vaisser, Anatoli260553 #9534.73
48 Kochiev, Alexander260458 #10227.68
49 Novikov, Igor A2604620.1% #10321.52
50 Ehlvest, Jaan260357 #10021.13
51 Sax, Gyula260350 #9732.45
52 Nikolic, Predrag260150 #9823.22
53 Azmaiparashvili, Zurab A259952 #10123.70
54 Chekhov, Valery A259951 #10128.01
55 Christiansen, Larry M259951 #10127.43
56 Kholmov, Ratmir D259758 #10758.55
57 Dvoretsky, Mark I2597640.1% #11335.97
58 Gipslis, Aivars259557 #10946.81
59 Kuzmin, Gennady P259554 #10737.86
60 Averbakh, Yury L2593710.1% #12161.81
61 Yudasin, Leonid G259352 #10924.31
62 Adorján, András259249 #10733.66
63 Razuvaev, Yury S258851 #11238.14
64 Smejkal, Jan258850 #11237.69
65 Gorelov, Sergey G258558 #12026.28
66 Taimanov, Mark E258558 #12157.81
67 Parma, Bruno2584650.1% #12741.91
68 Vasiukov, Evgeny A258353 #11850.73
69 Lerner, Konstantin Z258353 #11933.76
70 Gavrikov, Victor N258254 #12026.34
71 Byrne, Robert E258257 #12255.61
72 Kremenetsky, Anatoly M258166 #12944.88
73 Makarichev, Sergey Y258153 #12130.04
74 Shneider, Aleksandr258058 #12521.52
75 Didishko, Vereslav258059 #12734.64
76 Panno, Oscar R257958 #12648.70
77 Torre, Eugenio257950 #12232.07
78 Gheorghiu, Florin257850 #12339.65
79 Georgadze, Tamaz V257555 #12836.06
80 Averkin, Orest N257465 #13639.76
81 Kovacevic, Vladimir257451 #12641.68
82 Savon, Vladimir A257458 #13143.18
83 Mikhalchishin, Adrian B257352 #12829.03
84 Rashkovsky, Nukhim N257353 #13037.62
85 Panchenko, Alexander N257252 #12930.15
86 Vorotnikov, Vladislav V256960 #13736.29
87 Alburt, Lev O256752 #13438.27
88 Palatnik, Semen A256562 #14333.68
89 Timoshchenko, Gennady256358 #14134.59
90 Veingold, Aleksander256361 #14330.14
91 Zaichik, Gennady L256352 #13826.80
92 Quinteros, Miguel A256351 #13735.92
93 Ivanov, Igor V256354 #14036.89
94 Vitolinš, Alvis256261 #14437.46
95 Stean, Michael F256255 #14230.24
96 Ivanovic, Božidar256150 #13937.27
97 Barua, Dibyendu255960 #14817.09
98 Marjanovic, Slavoljub255851 #14228.90
99 Kharitonov, Andrey Y255757 #14724.65
100 Uhlmann, Wolfgang255649 #14248.67
101 Simic, Radoslav255661 35.47
102 Sokolov, Andrey Y255558 20.69
103 Suba, Mihai255550 36.50
104 Petrosian, Arshak B255453 29.95
105 Darga, Klaus V255475 49.77
106 Gufeld, Eduard E255454 47.70
107 Kurajica, Bojan255249 36.04
108 Guseinov, Aidyn255260 31.91
109 Anikaev, Yury255154 35.42
110 Bagirov, Vladimir K255151 47.29
111 Sturua, Zurab255159 24.48
112 Yermolinsky, Alex V255157 25.63
113 Knaak, Rainer F255050 30.70
114 Lombardy, William J255075 45.98
115 Chandler, Murray G254949 23.65
116 deFirmian, Nicholas E254952 26.34
117 Mestel, A Jonathan254851 26.71
118 Polovodin, Igor A254764 28.69
119 Ubilava, Elizbar E254754 33.26
120 Gligoric, Svetozar254650 60.83
121 Oll, Lembit254657 17.60
122 van der Wiel, John T H254549 24.31
123 Speelman, Jonathan S254549 27.16
124 Nikolac, Juraj254470 51.61
125 Glek, Igor V254464 22.06
126 Dzindzichashvili, Roman Y254355 39.57
127 Tarjan, James E254253 31.77
128 Abramovic, Boško254250 32.79
129 Velimirovic, Dragoljub254153 41.55
130 Csom, István254150 43.49
131 Karlsson, Lars254050 28.38
132 Vogt, Lothar H253950 31.87
133 Pintér, József253252 30.06
134 Faragó, Iván253249 37.66
135 Nemet, Ivan253261 40.63
136 Lukin, Andrei M252960 35.26
137 Salov, Valery B252967 19.51
138 Reshevsky, Samuel H252765 72.01
139 Olafsson, Fridrik252659 48.84
140 Shamkovich, Leonid A252654 60.50
141 Ivkov, Borislav252652 50.05
142 Eolian, Levon S252571 24.20
143 Pigusov, Evgeny252558 22.66
144 Osnos, Viacheslav V252569 48.35
145 Murey, Yakov252452 42.33
146 Pachmann, Ludek252466 59.55
147 Henley, Ron W252350 26.98
148 Cebalo, Mišo252354 38.82
149 Grigorian, Karen A252259 36.23
150 Lobron, Eric252149 23.56
151 Zilberman, Nathan R252163 43.57
152 Wedberg, Tom252151 30.01
153 Zakharov, Alexander V252067 40.15
154 Bilek, István251970 51.30
155 Keene, Raymond251853
156 Magerramov, Elmar S251873 25.64
157 Liberzon, Vladimir M251858 46.69
158 Gurgenidze, Bukhuti I251856 50.05
159 Najdorf, Miguel251757 73.62
160 Spassov, Liuben251750 40.69
161 Donchev, Dimitar I251653 25.36
162 Biyiasas, Peter251669 33.03
163 Meduna, Eduard251649 33.22
164 Ionov, Sergey251567 21.90
165 Jamieson, Robert Murray251575
166 Schmidt, Wlodzimierz251449 40.64
167 Kudrin, Sergey251452 24.23
168 Korzubov, Peter251362 21.91
169 García Gonzáles, Guillermo251351 29.97
170 Marovic, Dražen251269 45.88
171 Suetin, Alexey S251256 57.04
172 Pfleger, Helmut251253 40.32
173 Nikolic, Zivoslav251257 29.96
174 Ostermeyer, Peter251257 40.13
175 Mnatsakanian, Eduard A251160 44.98
176 Ree, Hans251150 39.21
177 Vladimirov, Evgeny Y251060 26.86
178 Tseitlin, Mikhail S251055 36.45
179 Thipsay, Praveen Mahadeo250963 24.30
180 Cámpora, Daniel H250954 26.42
181 Popovic, Petar250955 24.79
182 Bukic, Enver250858 45.99
183 Lechtynsky, Jiri250751 36.01
184 Klovans, Janis250757 48.64
185 Hazai, Laszlo250753 30.46
186 Szabó, László250769 66.70
187 Lukacs, Peter250651 33.39
188 Petrushin, Alexander I250663 36.72
189 Nogueiras, Jesus250653 24.37
190 Unzicker, Wolfgang250555 58.43
191 Lutikov, Anatoly S250570 50.82
192 Hansen, Curt250552 19.20
193 Lein, Anatoly250451 52.67
194 Djuric, Stefan250356 28.34
195 Espig, Lutz250351 34.90
196 Agdestein, Simen250254 16.54
197 Matulovic, Milan250255 48.47
198 Gurevich, Dmitry250251 27.22
199 Vukic, Milan250155 40.28
200 Matanovic, Aleksandar250063 53.52
201 Podzielny, Karl Heinz249971 29.22
202 Groszpeter, Attila249952 23.47
203 Inkiov, Ventzislav249949 27.53
204 Andrianov, Nikolai249861 21.94
205 Chiburdanidze, Maia G249856 22.87
206 Ivanov, Alexander V249773 27.58
207 Georgiev, Krum249751 25.52
208 Hulak, Krunoslav249751 32.51
209 Velikov, Petar249750 32.67
210 Spraggett, Kevin B249661 29.05
211 Franco Ocampos, Zenon249554 27.55
212 Short, Nigel D249450 18.50
213 Jansa, Vlastimil249449 41.01
214 Schussler, Harry249251 26.43
215 Bikhovsky, Avigdor I249263 28.73
216 Kengis, Edvins249058 24.63
217 Řgaard, Leif249056 31.90
218 Pribyl, Josef249052 36.13
219 Rogulj, Branko248969 32.33
220 Kraidman, Yair248965 51.08
221 Gruenberg, Hans Ulrich248856 27.89
222 Malich, Burkhard G248758 47.00
223 Smagin, Sergey248769 25.23
224 Duer, Arne248770 24.39
225 Tatai, Stefano248655 45.69
226 Díez del Corral, Jesús248663 50.65
227 Soltis, Andrew E248663 36.51
228 Kindermann, Stefan248651 23.92
229 Radulov, Ivan248549 44.90
230 Van der Sterren, Paul248551 27.70
231 Calvo Minguez, Ricardo248574 40.11
232 Mariotti, Sergio248560 37.30
233 Zapata, Alonso248452 25.27
234 Birnboim, Nathan248360 33.01
235 Gutman, Lev248358 38.18
236 Mokrý, Karel248354 24.81
237 Cherepkov, Alexander V248376 63.08
238 Rozentalis, Eduardas248265 20.51
239 Schneider, Lars Ake248254
240 Antoshin, Vladimir S248265 54.54
241 Kalinitschew, Sergey248274 27.82
242 Dizdar, Goran248154 24.98
243 Todorcevic, Miodrag248168 43.05
244 Wolf, Volker248066 26.23
245 Giorgadze, Giorgi248063 19.14
246 Peters, John A248065 32.80
247 Mednis, Edmar J247971 46.69
248 Bönsch, Uwe247950 25.12
249 Sigurjónsson, Gudmundur247853 36.18
250 Benko, Pal C247760 55.37
251 Pytel, Krzysztof247756 38.54
252 Popov, Luben247655 47.84
253 Rukavina, Josip247658 41.00
254 Plachetka, Jan247649 38.78
255 Spiridonov, Nikola247652 45.76
256 Adamski, Jan247550 40.05
257 Knezevic, Milorad247551 47.08
258 Mochalov, Evgeny V247469 32.09
259 Rodriguez, Amador247354 27.23
260 Hug, Werner247372 31.22
261 Zaitsev, Igor A247254 45.51
262 Plaskett, Jim247256 23.70
263 Lanka, Zigurds247261 23.52
264 Tavadian, Ragik247261
265 Ernst, Thomas247262 23.29
266 Stohl, Igor247158 19.18
267 Szekely, Peter247153 28.81
268 Tringov, Georgy P247055 46.73
269 Sunye Neto, Jaime247052 26.58
270 Arnason, Jon L246951 23.05
271 Portisch, Ferenc246954 44.64
272 Van Wijgerden, Cornelis246855 33.52
273 Arbakov, Valentin246863 31.84
274 Martinovic, Slobodan246854 38.35
275 Klaric, Zlatko246863 27.10
276 Eslon, Jaan246766 31.74
277 Feustel, Bernd246661 29.19
278 Kogan, Boris246560
279 Zilberstein, Valery I246566 40.63
280 Ghinda, Mihail Viorel246455 34.35
281 Gruenfeld, Yehuda246456 27.76
282 Vokác, Marek246466 24.98
283 Karner, Hillar246457 48.34
284 Jelen, Iztok246275 36.86
285 McCambridge, Vincent246265 23.73
286 Kirov Ivanov, Nino246252 38.22
287 Vera, Reynaldo246152 22.90
288 Martz, William E246075
289 Robatsch, Karl246056 55.13
290 Rajkovic, Dusan246053 41.45
291 Rivas Pastor, Manuel246052 23.38
292 Bisguier, Arthur B246062 54.14
293 Stoica, Valentin245958 33.79
294 Barczay, Laszlo245954 47.77
295 Lazic, Miroljub245868 17.42
296 Taulbut, Shaun M245861 25.88
297 Renman, Nils Gustaf245870
298 Mortensen, Erling245851 28.65
299 Wockenfuss, Klaus245863 32.25
300 Ligterink, Gert245652 34.04
301 Bajovic, Milan245565
302 Toth, Bela245556 40.61
303 Gurevich, Mikhail N245567 24.77
304 Helmers, Knut J245554 26.81
305 Prandstetter, Eduard245551 34.95
306 Makropoulos, Georgios245566 30.17
307 Raicevic, Vladimir245464 34.58
308 Velickovic, Sasa245461 32.66
309 Hamann, Svend245362 43.14
310 Govedarica, Radovan245373 35.79
311 Levitina, Irina S245358 29.48
312 Ambroz, Jan245354 29.45
313 Pekarek, Ales245263 21.95
314 Rodriguez, Ruben245263 36.97
315 Pétursson, Margeir245256 23.79
316 Padevsky, Nikola B245265 50.50
317 Hebden, Mark245052 25.79
318 Hartston, William R245064 36.30
319 Minic, Dragoljub245073 46.73
320 Hecht, Hans-Joachim244866 44.84
321 Bjelajac, Milan244857 35.71
322 Vadasz, Laszlo244765 35.84
323 Bastian, Herbert244758 30.96
324 Fedorowicz, John P244758 25.18
325 Dobrovolsky, Ladislav244757 32.93
326 Botterill, George Steven244772
327 Bass, Leonid244659 26.50
328 Hermann, Manfred244662 41.25
329 Commons, Kim S244672 32.35
330 Fernandez Garcia, Jose Luis244558 29.57
331 Ost Hansen, Jacob244457
332 Schweber, Samuel244462 47.37
333 Scheeren, Peter244355 28.33
334 Nei, Iivo244259 52.08
335 Kristiansen, Jens244254 31.51
336 Sznapik, Aleksander244250 32.80
337 Donner, Johannes H244262 56.40
338 Sharif, Mershad244275 31.38
339 Szmetan, Jorge244161 33.51
340 Ardiansyah, Haji244154 31.98
341 Littlewood, Paul E244156 27.87
342 Langeweg, Kick244053 46.73
343 Strauss, David J243974 37.31
344 Nurkic, Sahbaz243966 27.71
345 Barlov, Dragan243954 26.83
346 Kaidanov, Gregory S243965 24.13
347 Garcia Palermo, Carlos243954 29.99
348 Semkov, Semko243957 23.75
349 Nun, Jiri243961 26.34
350 Lukov, Valentin243852 27.96
351 Bouaziz, Slim243857 33.62
352 Szymczak, Zbigniew243753 31.90
353 Zaltsman, Vitaly F243759 42.09
354 Cvetkovic, Srdjan243758 37.76
355 Luczak, Andrzej243765 34.98
356 Frias, Victor J243655 27.80
357 Neckar, Lubomir243559 33.33
358 Gerusel, Mathias243570 45.82
359 Kagan, Shimon243559 41.65
360 Kaiszauri, Konstanty243563 31.10
361 Morovic Fernández, Iván E243474 20.68
362 Ilic, Zoran243465 20.33
363 Forintos, Gyözö V243357 48.33
364 Olafsson, Helgi243359 27.29
365 Rodriguez Vargas, Orestes243263 40.40
366 Schneider, Attila243255 28.63
367 Gobet, Fernand243259 21.80
368 Sahovic, Dragutin243155 43.31
369 Tompa, Janos243167 36.58
370 Gruen, Peter243161 26.88
371 Maki, Veijo243161 24.97
372 Rubinetti, Jorge A243164 38.66
373 Gomez Baillo, Jorge H243171 24.61
374 Zichichi, Alvise243167 45.40
375 Wirthensohn, Heinz243157 32.57
376 Soppe, Guillermo243172 23.20
377 Lengyel, Levente243162 50.46
378 Rantanen, Yrjo A243054 33.60
379 Wiedenkeller, Michael242966 20.89
380 Qi Jingxuan242964 36.06
381 Greenfeld, Alon242962 19.62
382 Shirazi, Kamran G242863 31.02
383 Augustin, Josef242874 41.53
384 Goehring, Karl Heinz242864
385 Hennings, Artur242869 43.38
386 Wittmann, Walter242858 35.71
387 Ostojic, Predrag242775 45.77
388 Shvidler, Eliahu242664 23.94
389 Alexandria, Nana242670 34.13
390 Skembris, Spyridon242653 25.77
391 Ghitescu, Theodor242666 49.85
392 Doda, Zbigniew242562 52.77
393 Cabrilo, Goran242557 25.41
394 Hase, Juan Carlos242561
395 Hebert, Jean242566 26.05
396 Jakobsen, Ole242353 41.11
397 Hernandez, Roman242353 34.02
398 Bronstein, Luis242368 37.49
399 Seppeur, Reinhold242365 28.30
400 Herzog, Adolf242364 30.48
401 Danailov, Silvio242361 22.61
402 Braga, Fernando242361 25.39
403 Djukic, Zeljko242357 24.47
404 Loginov, Valery A242263 27.96
405 Lalev, Dimitar242257 23.87
406 Ravikumar, Vaidyanathan242262 23.92
407 Nun, Josef242259 50.36
408 Lau, Ralf242266 24.11
409 Sydor, Andrzej242158 46.91
410 Foisor, Ovidiu242156 24.65
411 Seret, Jean Luc242175
412 Filipovic, Branko242164 26.15
413 Bellin, Robert242163 31.42
414 Kestler, Hans-Günter242066 43.96
415 Imanaliev, Taalaibek242064
416 Benjamin, Joel L241957 19.72
417 Sideif Sade, Fikret I241962 31.91
418 Rogers, Ian241958 23.43
419 Mascarinas, Rico241967 30.74
420 Garcia Martinez, Silvino241853 39.40
421 Reefschlaeger, Helmut241758 39.64
422 Krnic, Zdenko241760 36.16
423 Bielczyk, Jacek241752 30.77
424 Zahariev, Zahari241767 22.22
425 Haik, Aldo241762 31.11
426 Horvath, Tamas241755 32.10
427 Peev, Peicho Chonev241668 43.66
428 Trapl, Jindrich241671 41.68
429 Ornstein, Axel241655 31.60
430 Bohm, Hans241654 33.87
431 Kuligowski, Adam241653 27.93
432 Kelecevic, Nedeljko241657 36.72
433 Kunsztowicz, Uwe241567 39.87
434 Trifunov, Dimitar241564 19.90
435 Tisdall, Jonathan D241554 25.26
436 Akesson, Ralf241461 22.81
437 Van Voorthuijsen, PW.241476
438 Handoko, Edhi241355 23.26
439 Hausner, Ivan241357 31.62
440 Kuijf, Marinus241261 23.80
441 Bischoff, Klaus241254 22.47
442 Flear, Glenn C241162 24.80
443 Tiller, Bjorn241056 24.87
444 Borm, Franciscus WM241059
445 Osmanovic, Kemal241063 42.73
446 Heinbuch, Detlef241069 22.89
447 Kuijpers, Franciscus Antonius240974
448 Banas, Jan240955 36.49
449 Petran, Pal240967 37.21
450 Gonsior, Evzen240868 51.98
451 Brinck Claussen, Bjorn240854
452 Lanc, Alois240857 35.78
453 Tomaszewski, Roman240766 23.54
454 Hodgson, Julian M240760 20.35
455 Ermenkov, Evgenij240551 34.17
456 Sygulski, Artur240553 23.36
457 Li Zunian240568 25.89
458 Pritchett, Craig William240470
459 Drasko, Milan240463 20.98
460 Cvitan, Ognjen240460 22.14
461 Angantysson, Haukur240370 34.99
462 Rakic, Tomislav240257 49.05
463 Pliester, Leon240269 29.28
464 Bojkovic, Slobodan240267 38.34
465 Danner, Georg240057 37.09
466 Vilela, Jose Luis239952 30.70
467 Sher, Miron N239967 31.42
468 Cramling, Dan239959 24.82
469 van Scheltinga, Tjeerd D239968 69.73
470 Johansen, Darryl K239861 24.82
471 Borik, Otto239857 36.18
472 Diaz, Joaquin C239858 35.40
473 Dlugy, Maxim239859 17.84
474 Adianto, Utut239658 18.70
475 Tempone, Marcelo239660 21.23
476 Santos, Luis239566 28.42
477 Westerinen, Heikki MJ239551 39.59
478 Sisniega, Marcel239554 24.34
479 Fedder, Steen239563 32.46
480 Welin, Thomas239468 24.23
481 Milovanovic, Rade239469 29.05
482 Filipowicz, Andrzej239363 45.55
483 Filipenko, Alexander V239274 34.74
484 Grigorov, Jordan N239261 29.97
485 Damjanovic, Mato239161 56.69
486 Sjoberg, Mats239174 25.05
487 Hartoch, Robert G239170
488 Pinal, Nelson Borges239160
489 Martin Gonzalez, Angel239163 30.91
490 Georgiev, Kiril239057 18.01
491 Yrjola, Jouni239064 24.10
492 Velez, Nestor238863 27.57
493 Davies, Nigel R238862 23.33
494 Gauglitz, Gernot238763 21.42
495 Sibarevic, Milenko238665 38.72
496 Gross, Stefan238660 34.26
497 Cox, John J238664 21.52
498 Casper, Thomas238558 24.70
499 Soos, Bela238571 53.73
500 Bellon Lopez, Juan Manuel238555 33.56

These ratings, calculated as of November 30, 1983, incorporate all games (against rated opponents) played in the time between December 1, 1982 and November 30, 1983, along with the ratings that were already calculated as of November 30, 1982. 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 November 30, 1983. This represents the player's estimated strength on December 1, 1983.

+/- 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 December 1, 1983. The +/- value represents the standard deviation of that estimate; the player's true strength on December 1, 1983 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 December 1, 1983. 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 November 30, 1983. 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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