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Top 10 active players as of July 31, 1983


Top 500 active players as of July 31, 1983

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K27995147.6% #320.30
2 Karpov, Anatoly E27854933.0% #432.19
3 Spassky, Boris V2706502.4% #2046.50
4 Korchnoi, Viktor L2703491.9% #2152.36
5 Andersson, Ulf2699481.5% #2232.09
6 Ljubojevic, Ljubomir2699511.8% #2332.74
7 Vaganian, Rafael A2691491.1% #2531.79
8 Beliavsky, Alexander G2690501.2% #2629.62
9 Tal, Mikhail2688490.9% #2746.73
10 Romanishin, Oleg M2687491.0% #2731.56
11 Portisch, Lajos2685491.0% #2846.32
12 Polugaevsky, Lev A2684501.0% #2948.70
13 Timman, Jan H2681480.6% #3031.63
14 Dolmatov, Sergey V2680510.8% #3124.45
15 Petrosian, Tigran V2677500.6% #3354.12
16 Smyslov, Vassily V2664530.5% #4262.35
17 Hübner, Robert2661490.3% #4134.73
18 Ribli, Zoltán2661490.3% #4131.90
19 Gulko, Boris F2658570.5% #4736.48
20 Psakhis, Lev B2655490.2% #4524.67
21 Hort, Vlastimil2650480.1% #4839.55
22 Balashov, Yury S2643500.1% #5534.38
23 Jussupow, Artur M2632500.1% #6323.47
24 Miles, Anthony J263049 #6428.27
25 Geller, Efim P263050 #6558.41
26 Sosonko, Gennadi262950 #6540.20
27 Dorfman, Iosif D262752 #6831.25
28 Tukmakov, Vladimir B262652 #6937.38
29 Tseshkovsky, Vitaly V262450 #7038.85
30 Bronstein, David I2621580.1% #7859.45
31 Nunn, John D M262048 #7228.27
32 Agzamov, Georgy T261952 #7528.90
33 Vaisser, Anatoli261255 #8334.40
34 Lputian, Smbat G261152 #8325.46
35 Browne, Walter S261150 #8134.56
36 Sax, Gyula260850 #8432.12
37 Kupreichik, Viktor D260853 #8734.08
38 Seirawan, Yasser260849 #8423.35
39 Smejkal, Jan260651 #8737.36
40 Makarichev, Sergey Y260656 #9029.70
41 Ftácnik, Lubomír260549 #8625.75
42 Razuvaev, Yury S259951 #9437.81
43 Nikolic, Predrag259751 #9622.89
44 Palatnik, Semen A2597690.2% #10933.35
45 Christiansen, Larry M259650 #9627.09
46 Kovacevic, Vladimir259652 #9841.35
47 Dvoretsky, Mark I2595640.1% #10835.64
48 Azmaiparashvili, Zurab A259556 #10223.37
49 Lerner, Konstantin Z259455 #10133.42
50 Gipslis, Aivars259456 #10246.48
51 Kuzmin, Gennady P259454 #10137.53
52 Malaniuk, Vladimir P259362 #10726.03
53 Kavalek, Lubomir259352 #10039.97
54 Taimanov, Mark E259363 #10857.48
55 Ivanov, Igor V259155 #10536.56
56 Averbakh, Yury L2590710.1% #11761.48
57 Mikhalchishin, Adrian B258954 #10528.70
58 Parma, Bruno2588650.1% #11541.59
59 Suba, Mihai258851 #10536.16
60 Panchenko, Alexander N258753 #10729.82
61 Adorján, András258650 #10633.33
62 Yudasin, Leonid G258552 #10823.97
63 Larsen, Bent258550 #10748.41
64 Chernin, Alexander M258562 #11623.40
65 Gorelov, Sergey G258457 #11325.95
66 Kochiev, Alexander258462 #11627.35
67 Chekhov, Valery A258052 #11427.68
68 Rashkovsky, Nukhim N258054 #11537.29
69 Averkin, Orest N257865 #12539.43
70 Kremenetsky, Anatoly M257666 #12844.55
71 Kholmov, Ratmir D257662 #12458.22
72 Vorotnikov, Vladislav V257660 #12335.95
73 Savon, Vladimir A257558 #12342.85
74 Vasiukov, Evgeny A257553 #11950.40
75 Dvoiris, Semen I257464 #12724.74
76 Sveshnikov, Evgeny E257451 #11933.47
77 Torre, Eugenio257350 #11931.74
78 Panno, Oscar R257257 #12548.37
79 Didishko, Vereslav257065 #13334.31
80 Ehlvest, Jaan256962 #13020.80
81 Dzindzichashvili, Roman Y256956 #12939.24
82 Gheorghiu, Florin256749 #12539.32
83 Anikaev, Yury256756 #13035.09
84 Kurajica, Bojan256550 #12835.71
85 Alburt, Lev O256553 #13037.94
86 Gligoric, Svetozar256351 #13060.49
87 Vitolinš, Alvis256159 #13737.13
88 Veingold, Aleksander256061 #13929.81
89 Quinteros, Miguel A255951 #13435.59
90 Yurtaev, Leonid255963 #14224.25
91 Gufeld, Eduard E255955 #13647.37
92 Chandler, Murray G255849 #13423.32
93 Uhlmann, Wolfgang255749 #13448.34
94 Gavrikov, Victor N255658 #14126.01
95 Timoshchenko, Gennady255660 #14234.26
96 Zaichik, Gennady L255558 #14226.47
97 Byrne, Robert E255461 #14555.28
98 Vyzmanavin, Alexey255369 #15023.58
99 Gurgenidze, Bukhuti I255359 #14549.72
100 van der Wiel, John T H255249 #13923.97
101 Georgadze, Tamaz V255057 35.73
102 Speelman, Jonathan S254949 26.83
103 Lombardy, William J254875 45.66
104 Sturua, Zurab254866 24.15
105 Petrosian, Arshak B254853 29.62
106 Kharitonov, Andrey Y254761 24.32
107 Shamkovich, Leonid A254755 60.16
108 Simic, Radoslav254658 35.14
109 Stean, Michael F254555 29.91
110 Ivanovic, Božidar254351 36.93
111 Knaak, Rainer F254250 30.37
112 Murey, Yakov254251 41.99
113 Grigorian, Karen A254065 35.90
114 Ivkov, Borislav253952 49.72
115 Vogt, Lothar H253649 31.54
116 Karlsson, Lars253651 28.05
117 Marjanovic, Slavoljub253652 28.57
118 Bagirov, Vladimir K253552 46.95
119 Hulak, Krunoslav253551 32.18
120 Nikolac, Juraj253469 51.27
121 Csom, István253450 43.16
122 Pfleger, Helmut253355 39.98
123 Vladimirov, Evgeny Y253364 26.53
124 Mestel, A Jonathan253250 26.38
125 Velimirovic, Dragoljub253252 41.22
126 Barua, Dibyendu253161 16.76
127 Abramovic, Boško253051 32.46
128 Tarjan, James E253057 31.44
129 Kengis, Edvins252957 24.30
130 Sokolov, Andrey Y252965 20.36
131 Pintér, József252852 29.73
132 Reshevsky, Samuel H252765 71.68
133 Osnos, Viacheslav V252663 48.02
134 deFirmian, Nicholas E252553 26.01
135 Eolian, Levon S252571 23.87
136 Ubilava, Elizbar E252459 32.92
137 Řgaard, Leif252458 31.57
138 Popovic, Petar252453 24.46
139 Lein, Anatoly252452 52.34
140 Nemet, Ivan252361 40.30
141 García Gonzáles, Guillermo252251 29.64
142 Lobron, Eric252250 23.23
143 Olafsson, Fridrik252158 48.51
144 Najdorf, Miguel252156 73.29
145 Magerramov, Elmar S251973 25.31
146 Shneider, Aleksandr251858 21.19
147 Andrianov, Nikolai251861 21.61
148 Faragó, Iván251749 37.33
149 Liberzon, Vladimir M251757 46.36
150 Lechtynsky, Jiri251753 35.68
151 Djuric, Stefan251660 28.01
152 Matulovic, Milan251655 48.14
153 Meduna, Eduard251649 32.89
154 Wedberg, Tom251551 29.68
155 Karner, Hillar251461 48.01
156 Pachmann, Ludek251366 59.22
157 Thipsay, Praveen Mahadeo251162 23.96
158 Marovic, Dražen251169 45.55
159 Salov, Valery B251168 19.18
160 Soltis, Andrew E251064 36.17
161 Cebalo, Mišo251054 38.48
162 Zilberman, Nathan R251064 43.24
163 Keene, Raymond250953
164 Vukic, Milan250956 39.94
165 Lukin, Andrei M250960 34.92
166 Suetin, Alexey S250954 56.71
167 Biyiasas, Peter250869 32.70
168 Tseitlin, Mikhail S250855 36.12
169 Unzicker, Wolfgang250855 58.10
170 McKay, Roderick M250771 31.47
171 Ivanov, Alexander V250769 27.25
172 Nikolic, Zivoslav250656 29.63
173 Ree, Hans250650 38.88
174 Mokrý, Karel250555 24.48
175 Szabó, László250568 66.37
176 Bukic, Enver250558 45.66
177 Yermolinsky, Alex V250556 25.30
178 Lutikov, Anatoly S250470 50.49
179 Jamieson, Robert Murray250366
180 Klovans, Janis250160 48.31
181 Espig, Lutz249951 34.57
182 Lukacs, Peter249852 33.06
183 Kudrin, Sergey249854 23.90
184 Bilek, István249870 50.96
185 Gurevich, Dmitry249750 26.89
186 Matanovic, Aleksandar249763 53.19
187 Hansen, Curt249552 18.87
188 Mnatsakanian, Eduard A249567 44.65
189 Spassov, Liuben249550 40.36
190 Franco Ocampos, Zenon249554 27.22
191 Radulov, Ivan249449 44.56
192 Schmidt, Wlodzimierz249449 40.31
193 Groszpeter, Attila249352 23.14
194 Tringov, Georgy P249253 46.40
195 Plachetka, Jan249250 38.45
196 Oll, Lembit249162 17.27
197 Van der Sterren, Paul249151 27.37
198 Stoica, Valentin249059 33.46
199 Georgiev, Krum249051 25.19
200 Malich, Burkhard G249057 46.67
201 Schneider, Lars Ake248953
202 Knezevic, Milorad248952 46.75
203 Chiburdanidze, Maia G248955 22.54
204 Rogulj, Branko248769 31.99
205 Peters, John A248765 32.47
206 Díez del Corral, Jesús248660 50.32
207 Schussler, Harry248651 26.10
208 Birnboim, Nathan248559 32.68
209 Velikov, Petar248549 32.34
210 Bjelajac, Milan248562 35.38
211 Cámpora, Daniel H248555 26.09
212 Enklaar, Bertus F248375
213 Henley, Ron W248353 26.65
214 Pigusov, Evgeny248264 22.33
215 Smagin, Sergey248169 24.90
216 Kalinitschew, Sergey248174 27.49
217 Gruenberg, Hans Ulrich248058 27.56
218 Kraidman, Yair248064 50.75
219 Nogueiras, Jesus248053 24.04
220 Strauss, David J248066 36.98
221 Jansa, Vlastimil248049 40.68
222 Szekely, Peter248053 28.48
223 Hazai, Laszlo248055 30.13
224 Bisguier, Arthur B247964 53.81
225 Short, Nigel D247950 18.16
226 Sigurjónsson, Gudmundur247853 35.85
227 Benko, Pal C247860 55.04
228 Todorcevic, Miodrag247862 42.72
229 Bönsch, Uwe247850 24.79
230 Inkiov, Ventzislav247750 27.20
231 Tatai, Stefano247755 45.36
232 Pribyl, Josef247752 35.80
233 Popov, Luben247755 47.51
234 Podzielny, Karl Heinz247768 28.89
235 Mochalov, Evgeny V247769 31.76
236 Gobet, Fernand247659 21.47
237 Antoshin, Vladimir S247664 54.21
238 Rodriguez, Amador247652 26.90
239 Hug, Werner247565 30.89
240 Ostermeyer, Peter247563 39.80
241 Vera, Reynaldo247453 22.56
242 Mariotti, Sergio247459 36.97
243 Portisch, Ferenc247458 44.31
244 Dely, Peter247370 49.07
245 Barczay, Laszlo247355 47.44
246 Rajkovic, Dusan247255 41.12
247 Pytel, Krzysztof247155 38.21
248 Sygulski, Artur247054 23.02
249 Mednis, Edmar J247069 46.36
250 Sunye Neto, Jaime247053 26.24
251 Klaric, Zlatko247060 26.77
252 Martinovic, Slobodan246954 38.02
253 Van Wijgerden, Cornelis246855 33.19
254 Seret, Jean Luc246867
255 Zaltsman, Vitaly F246865 41.76
256 Kindermann, Stefan246751 23.59
257 Mortensen, Erling246651 28.32
258 Agdestein, Simen246657 16.21
259 Ost Hansen, Jacob246659
260 Pekarek, Ales246563 21.62
261 Hebden, Mark246552 25.46
262 Gutman, Lev246557 37.85
263 Kogan, Boris246461
264 Djukic, Zeljko246465 24.13
265 Spiridonov, Nikola246451 45.42
266 Gruenfeld, Yehuda246455 27.42
267 Arnason, Jon L246352 22.72
268 Ciocaltea, Victor246354 51.54
269 Bouaziz, Slim246359 33.29
270 Kirov Ivanov, Nino246252 37.89
271 Adamski, Jan246151 39.72
272 Martz, William E246175
273 Jelen, Iztok246175 36.53
274 Zaitsev, Igor A246156 45.18
275 Duer, Arne246068 24.06
276 Taulbut, Shaun M246060 25.55
277 Ermenkov, Evgenij245951 33.84
278 Robatsch, Karl245957 54.80
279 Donchev, Dimitar I245856 25.03
280 Rukavina, Josip245860 40.67
281 Prandstetter, Eduard245852 34.63
282 Stohl, Igor245762 18.84
283 Pétursson, Margeir245756 23.46
284 Hecht, Hans-Joachim245762 44.51
285 Ardiansyah, Haji245659 31.65
286 Padevsky, Nikola B245664 50.17
287 Hartston, William R245561 35.96
288 Govedarica, Radovan245563 35.46
289 Vokác, Marek245362 24.65
290 Sahovic, Dragutin245259 42.97
291 Ernst, Thomas245163 22.95
292 Ghinda, Mihail Viorel245157 34.02
293 Sharif, Mershad245174 31.05
294 Dobrovolsky, Ladislav245054 32.60
295 Helmers, Knut J245055 26.48
296 Wolf, Volker245069 25.90
297 McCambridge, Vincent244965 23.40
298 Minic, Dragoljub244873 46.40
299 Ligterink, Gert244852 33.70
300 Langeweg, Kick244853 46.40
301 Toth, Bela244855 40.28
302 Vadasz, Laszlo244864 35.51
303 Rodriguez, Ruben244758 36.65
304 Lanka, Zigurds244762 23.19
305 Renman, Nils Gustaf244766
306 Rivas Pastor, Manuel244652 23.05
307 Sznapik, Aleksander244550 32.47
308 Zapata, Alonso244553 24.94
309 Hamann, Svend244471 42.81
310 Szmetan, Jorge244460 33.18
311 Luczak, Andrzej244363 34.65
312 Ornstein, Axel244354 31.27
313 Greenfeld, Alon244361 19.29
314 Ambroz, Jan244252 29.12
315 Mascarinas, Rico244162 30.41
316 Neckar, Lubomir244159 32.99
317 Wockenfuss, Klaus244163 31.92
318 Feustel, Bernd244159 28.86
319 Fernandez Garcia, Jose Luis244157 29.24
320 Filipovic, Branko244063 25.82
321 Commons, Kim S244064 32.02
322 Nei, Iivo243959 51.75
323 Hermann, Manfred243967 40.92
324 Velickovic, Sasa243967 32.33
325 Gurevich, Mikhail N243768 24.44
326 Rubinetti, Jorge A243758 38.33
327 Donner, Johannes H243762 56.07
328 Barlov, Dragan243753 26.50
329 Cvetkovic, Srdjan243758 37.42
330 Doda, Zbigniew243672 52.44
331 Schweber, Samuel243661 47.04
332 Alexandria, Nana243665 33.80
333 Fedorowicz, John P243558 24.84
334 Wittmann, Walter243557 35.38
335 Makropoulos, Georgios243462 29.84
336 Tiller, Bjorn243458 24.54
337 Ghitescu, Theodor243361 49.52
338 Sydor, Andrzej243358 46.58
339 Soppe, Guillermo243272 22.87
340 Raicevic, Vladimir243260 34.24
341 Jakobsen, Ole243254 40.78
342 Szymczak, Zbigniew243254 31.57
343 Forintos, Gyözö V243256 48.00
344 Garcia Palermo, Carlos243254 29.66
345 Lukov, Valentin243155 27.64
346 Rodriguez Vargas, Orestes243163 40.07
347 Morris, Walter D243170 24.91
348 Tavadian, Ragik243073
349 Hennings, Artur243069 43.05
350 Bischoff, Klaus243055 22.14
351 Imanaliev, Taalaibek242965
352 Gruen, Peter242961 26.55
353 Frias, Victor J242955 27.47
354 Rantanen, Yrjo A242954 33.27
355 Augustin, Josef242973 41.20
356 Reefschlaeger, Helmut242858 39.31
357 Kestler, Hans-Günter242863 43.63
358 Scheeren, Peter242855 28.00
359 Nun, Jiri242858 26.01
360 Kristiansen, Jens242754 31.18
361 Bellin, Robert242759 31.09
362 Zichichi, Alvise242767 45.07
363 Wirthensohn, Heinz242756 32.24
364 Shvidler, Eliahu242764 23.61
365 Lengyel, Levente242659 50.13
366 Gomez Baillo, Jorge H242672 24.28
367 Hebert, Jean242661 25.72
368 Littlewood, Paul E242656 27.54
369 Hase, Juan Carlos242560
370 Tompa, Janos242567 36.25
371 Krnic, Zdenko242459 35.83
372 Bronstein, Luis242465 37.16
373 Palacios, Antonio242463 30.72
374 Ravikumar, Vaidyanathan242362 23.60
375 Kaiszauri, Konstanty242363 30.77
376 Ciric, Dragoljub M242373 47.72
377 Bajovic, Milan242359
378 Kunsztowicz, Uwe242269 39.54
379 Ostojic, Predrag242274 45.44
380 Tisdall, Jonathan D242254 24.92
381 Lau, Ralf242164 23.78
382 Schneider, Attila242157 28.30
383 Kelecevic, Nedeljko242057 36.39
384 Shirazi, Kamran G242064 30.69
385 Bielczyk, Jacek242052 30.44
386 Kuligowski, Adam241953 27.60
387 Kagan, Shimon241958 41.32
388 Horvath, Tamas241857 31.77
389 Plaskett, Jim241856 23.37
390 Lalev, Dimitar241857 23.54
391 Trapl, Jindrich241864 41.35
392 Flear, Glenn C241766 24.47
393 Hernandez, Roman241753 33.69
394 Hausner, Ivan241655 31.29
395 Osmanovic, Kemal241663 42.40
396 Dizdar, Goran241656 24.66
397 Burger, Karl241555 50.52
398 Goehring, Karl Heinz241463
399 Cabrilo, Goran241459 25.08
400 Van Voorthuijsen, PW.241376
401 Braga, Fernando241360 25.06
402 Levitina, Irina S241365 29.15
403 Olafsson, Helgi241358 26.95
404 Bohm, Hans241253 33.54
405 Morovic Fernández, Iván E241164 20.35
406 Pritchett, Craig William241165
407 Garcia Martinez, Silvino241054 39.07
408 Brinck Claussen, Bjorn241054
409 Benjamin, Joel L240958 19.39
410 Williams, Arthur Howard240974
411 Handoko, Edhi240958 22.92
412 Haik, Aldo240860 30.78
413 Banas, Jan240757 36.16
414 Kuijf, Marinus240761 23.47
415 Kuijpers, Franciscus Antonius240774
416 Sideif Sade, Fikret I240768 31.58
417 Drasko, Milan240663 20.65
418 Borm, Franciscus WM240559
419 Angantysson, Haukur240573 34.66
420 Balshan, Amikam240475
421 Petran, Pal240367 36.88
422 Westerinen, Heikki MJ240251 39.26
423 Nun, Josef240264 50.02
424 Martin Gonzalez, Angel240262 30.58
425 Danner, Georg240256 36.76
426 Foisor, Ovidiu240156 24.32
427 Herzog, Adolf240162 30.15
428 Trikaliotis, Georgios240172 44.43
429 Gerusel, Mathias240174 45.49
430 Fedder, Steen240061 32.13
431 Vilela, Jose Luis240052 30.37
432 Tomaszewski, Roman240064 23.21
433 Wiedenkeller, Michael239965 20.56
434 van Scheltinga, Tjeerd D239968 69.40
435 Borik, Otto239957 35.85
436 Damjanovic, Mato239858 56.36
437 Akesson, Ralf239760 22.48
438 Nowak, Ignacy239762 34.55
439 Budde, Vladimir239766 30.60
440 Thorsteins, Karl239563 18.80
441 Cifuentes Parada, Roberto239576 25.61
442 Kouatly, Bachar239458 25.41
443 Diaz, Joaquin C239459 35.07
444 Cramling, Dan239356 24.49
445 Myagmarsuren, Lhamsuren239368 45.45
446 Pinal, Nelson Borges239260
447 Heinbuch, Detlef239270 22.56
448 Gonsior, Evzen239268 51.65
449 Casper, Thomas239056 24.37
450 Filipowicz, Andrzej239060 45.22
451 Nurkic, Sahbaz239074 27.38
452 Sjoberg, Mats239072 24.72
453 Karkanaque, Ilir238973
454 Sibarevic, Milenko238965 38.38
455 Gauglitz, Gernot238963 21.09
456 Welin, Thomas238868 23.90
457 Ochoa de Echaguen, F Javier238863 28.91
458 Santos, Jose P238867 24.80
459 Bastian, Herbert238865 30.64
460 Filipenko, Alexander V238874 34.41
461 Bellon Lopez, Juan Manuel238854 33.23
462 Gross, Stefan238860 33.92
463 Velez, Nestor238864 27.24
464 Pliester, Leon238869 28.94
465 McNab, Colin Anderson238662 22.49
466 Moehring, Guenther238461 46.68
467 Stempin, Pawel238358 24.05
468 Huss, Andreas238369 32.79
469 Skembris, Spyridon238354 25.44
470 Dobosz, Henryk238266 30.36
471 Murray, J.238271
472 Nicevski, Risto238260 38.09
473 Partos, Charles238265 46.97
474 Monier, Raul238174 23.23
475 Herbrechtsmeier, Christof238164 29.59
476 Tempone, Marcelo238160 20.90
477 Odendahl, Steven M238173 23.77
478 Rakic, Tomislav238160 48.72
479 Soos, Bela238170 53.40
480 Stein, Bernd238064 28.53
481 Fries Nielsen, Jens Ove238051 23.44
482 Novikov, Igor A238076 21.19
483 Peev, Peicho Chonev237866 43.33
484 Van Riemsdijk, Herman C237864 34.92
485 Bass, Leonid237872 26.17
486 Kuzmin, Alexey237870 20.40
487 Sarwinski, Miroslaw237762 29.54
488 Cooper, John Grantley237769
489 Hartoch, Robert G237768
490 Bednarski, Jacek B237667 44.38
491 Segal, Alexandru Sorin237671 35.82
492 Skalkotas, Nikolaos237569 33.86
493 Honfi, Karoly237562 52.77
494 Hartmann, Wolfram237568 27.19
495 Schinzel, Wladyslaw237561 40.19
496 Barle, Janez237573 31.36
497 Pokojowczyk, Jerzy237453 34.44
498 Rigo, Janos237466 34.76
499 Liang Jinrong237463 23.19
500 Votruba, Pavel237461 34.86

These ratings, calculated as of July 31, 1983, incorporate all games (against rated opponents) played in the time between August 1, 1982 and July 31, 1983, along with the ratings that were already calculated as of July 31, 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 July 31, 1983. This represents the player's estimated strength on August 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 August 1, 1983. The +/- value represents the standard deviation of that estimate; the player's true strength on August 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 August 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 July 31, 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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