< July 31, 1983     Back to date list    September 30, 1983 >

Top 10 active players as of August 31, 1983


Top 500 active players as of August 31, 1983

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28135058.7% #220.38
2 Karpov, Anatoly E27824926.6% #432.27
3 Spassky, Boris V2704491.8% #2046.59
4 Korchnoi, Viktor L2703501.6% #2152.44
5 Andersson, Ulf2695481.0% #2432.18
6 Vaganian, Rafael A2693491.1% #2531.88
7 Beliavsky, Alexander G2690501.0% #2629.71
8 Polugaevsky, Lev A2688510.9% #2748.78
9 Portisch, Lajos2686490.7% #2846.41
10 Ljubojevic, Ljubomir2684500.8% #3032.83
11 Romanishin, Oleg M2683490.6% #2931.64
12 Tal, Mikhail2682480.6% #3046.81
13 Dolmatov, Sergey V2680510.8% #3224.53
14 Timman, Jan H2678480.5% #3131.71
15 Petrosian, Tigran V2665500.3% #4054.21
16 Ribli, Zoltán2663490.2% #4131.98
17 Smyslov, Vassily V2663530.3% #4262.44
18 Gulko, Boris F2660570.5% #4636.56
19 Hübner, Robert2658500.2% #4534.82
20 Psakhis, Lev B2654490.2% #4724.76
21 Hort, Vlastimil2648480.1% #5139.64
22 Balashov, Yury S2645500.1% #5434.47
23 Nunn, John D M263448 #6128.35
24 Jussupow, Artur M2633500.1% #6323.55
25 Miles, Anthony J263148 #6428.36
26 Dvoiris, Semen I2627580.1% #7224.83
27 Dorfman, Iosif D2627520.1% #6831.33
28 Bronstein, David I2626590.1% #7459.53
29 Vaisser, Anatoli2625530.1% #7134.49
30 Geller, Efim P262449 #7158.50
31 Tukmakov, Vladimir B262352 #7237.46
32 Sosonko, Gennadi262150 #7440.29
33 Browne, Walter S262149 #7334.64
34 Agzamov, Georgy T261952 #7728.98
35 Tseshkovsky, Vitaly V261450 #7938.93
36 Larsen, Bent261249 #8148.49
37 Lputian, Smbat G261152 #8425.55
38 Seirawan, Yasser261049 #8223.44
39 Ftácnik, Lubomír260848 #8425.84
40 Chernin, Alexander M2607620.1% #9423.48
41 Kupreichik, Viktor D260753 #8934.16
42 Smejkal, Jan260451 #8937.44
43 Razuvaev, Yury S260051 #9437.89
44 Lerner, Konstantin Z259855 #9833.51
45 Sveshnikov, Evgeny E259750 #9533.55
46 Palatnik, Semen A2597690.1% #10933.43
47 Sax, Gyula259749 #9532.20
48 Taimanov, Mark E259763 #10657.57
49 Adorján, András259650 #9633.42
50 Kovacevic, Vladimir259652 #9841.43
51 Christiansen, Larry M259650 #9727.18
52 Makarichev, Sergey Y259554 #10129.79
53 Gipslis, Aivars259557 #10246.56
54 Kuzmin, Gennady P259554 #10137.62
55 Dvoretsky, Mark I2594640.1% #10835.73
56 Azmaiparashvili, Zurab A259456 #10323.46
57 Nikolic, Predrag259250 #10122.97
58 Malaniuk, Vladimir P259262 #11026.11
59 Averbakh, Yury L2590720.1% #11861.56
60 Kavalek, Lubomir258751 #10640.06
61 Zaichik, Gennady L258654 #10926.55
62 Kochiev, Alexander258662 #11527.43
63 Parma, Bruno258665 #11741.67
64 Gorelov, Sergey G258557 #11326.04
65 Gavrikov, Victor N258555 #11226.09
66 Yudasin, Leonid G258452 #10924.06
67 Panchenko, Alexander N258052 #11429.90
68 Rashkovsky, Nukhim N257954 #11637.37
69 Kholmov, Ratmir D257862 #12458.30
70 Georgadze, Tamaz V257855 #11835.81
71 Kremenetsky, Anatoly M257766 #12744.63
72 Didishko, Vereslav257659 #12234.39
73 Averkin, Orest N257665 #12739.52
74 Vasiukov, Evgeny A257553 #11950.49
75 Vorotnikov, Vladislav V257560 #12536.04
76 Alburt, Lev O257453 #12238.03
77 Chekhov, Valery A257451 #12027.76
78 Torre, Eugenio257450 #11931.82
79 Panno, Oscar R257357 #12448.46
80 Savon, Vladimir A257358 #12642.92
81 Suba, Mihai257251 #12236.25
82 Ivanov, Igor V257055 #12736.65
83 Gheorghiu, Florin256849 #12639.40
84 Ehlvest, Jaan256762 #13420.88
85 Mikhalchishin, Adrian B256653 #12928.79
86 Anikaev, Yury256456 #13335.17
87 Barua, Dibyendu256461 #13616.84
88 Gligoric, Svetozar256450 #12960.58
89 Kurajica, Bojan256450 #12935.79
90 Vitolinš, Alvis256261 #13737.21
91 Veingold, Aleksander256261 #13929.89
92 Timoshchenko, Gennady255960 #14034.34
93 Chandler, Murray G255949 #13323.41
94 Yurtaev, Leonid255863 #14324.33
95 Uhlmann, Wolfgang255749 #13648.42
96 Quinteros, Miguel A255550 #13735.68
97 Vyzmanavin, Alexey255569 #15123.66
98 Byrne, Robert E255462 #14655.36
99 van der Wiel, John T H255349 #13924.06
100 Stean, Michael F255255 #14329.98
101 Sokolov, Andrey Y255158 20.45
102 Gufeld, Eduard E255154 47.45
103 Speelman, Jonathan S254849 26.91
104 Simic, Radoslav254858 35.23
105 Petrosian, Arshak B254654 29.71
106 Kharitonov, Andrey Y254661 24.41
107 Ivkov, Borislav254552 49.80
108 Lombardy, William J254575 45.74
109 Dzindzichashvili, Roman Y254455 39.32
110 Oll, Lembit254357 17.36
111 Nikolac, Juraj254370 51.36
112 Knaak, Rainer F254250 30.46
113 Grigorian, Karen A254065 35.98
114 Ivanovic, Božidar253950 37.02
115 deFirmian, Nicholas E253753 26.10
116 Hulak, Krunoslav253752 32.27
117 Mestel, A Jonathan253650 26.47
118 Karlsson, Lars253650 28.14
119 Marjanovic, Slavoljub253652 28.65
120 Bagirov, Vladimir K253652 47.04
121 Vogt, Lothar H253550 31.62
122 Velimirovic, Dragoljub253452 41.30
123 Csom, István253450 43.25
124 Shamkovich, Leonid A253355 60.25
125 Vladimirov, Evgeny Y253364 26.61
126 Sturua, Zurab253259 24.23
127 Tarjan, James E253057 31.53
128 Abramovic, Boško252950 32.55
129 Nemet, Ivan252861 40.38
130 Murey, Yakov252751 42.08
131 Pfleger, Helmut252753 40.07
132 Pintér, József252652 29.81
133 Lobron, Eric252649 23.32
134 Reshevsky, Samuel H252565 71.76
135 Eolian, Levon S252571 23.95
136 Olafsson, Fridrik252458 48.60
137 Osnos, Viacheslav V252469 48.10
138 Ubilava, Elizbar E252456 33.01
139 Lechtynsky, Jiri252352 35.77
140 Faragó, Iván252249 37.41
141 Gurgenidze, Bukhuti I252256 49.80
142 Popovic, Petar252153 24.55
143 Matulovic, Milan252155 48.22
144 Najdorf, Miguel252156 73.38
145 Pachmann, Ludek252166 59.30
146 García Gonzáles, Guillermo252051 29.73
147 Shneider, Aleksandr251858 21.28
148 Liberzon, Vladimir M251758 46.44
149 Magerramov, Elmar S251773 25.39
150 Bilek, István251770 51.05
151 Cebalo, Mišo251755 38.57
152 Meduna, Eduard251749 32.97
153 Kengis, Edvins251559 24.39
154 Jamieson, Robert Murray251566
155 Wedberg, Tom251552 29.76
156 Ostermeyer, Peter251358 39.89
157 Djuric, Stefan251360 28.10
158 Keene, Raymond251253
159 McKay, Roderick M251272 31.55
160 Salov, Valery B251168 19.26
161 Marovic, Dražen251169 45.63
162 Suetin, Alexey S251054 56.79
163 Biyiasas, Peter251069 32.78
164 Zilberman, Nathan R251064 43.33
165 Mnatsakanian, Eduard A251060 44.73
166 Vukic, Milan251056 40.03
167 Lukin, Andrei M250960 35.01
168 Nikolic, Zivoslav250856 29.72
169 Unzicker, Wolfgang250755 58.18
170 Ree, Hans250650 38.95
171 Tseitlin, Mikhail S250655 36.21
172 Thipsay, Praveen Mahadeo250661 24.05
173 Ivanov, Alexander V250569 27.33
174 Bukic, Enver250557 45.75
175 Lutikov, Anatoly S250470 50.57
176 Szabó, László250469 66.45
177 Yermolinsky, Alex V250456 25.39
178 Mokrý, Karel250455 24.57
179 Andrianov, Nikolai250461 21.70
180 Gurevich, Dmitry250351 26.97
181 Lein, Anatoly250252 52.43
182 Klovans, Janis250062 48.39
183 Spassov, Liuben250051 40.44
184 Espig, Lutz249851 34.65
185 Hansen, Curt249852 18.95
186 Gruenberg, Hans Ulrich249755 27.64
187 Matanovic, Aleksandar249763 53.27
188 Nogueiras, Jesus249653 24.12
189 Schmidt, Wlodzimierz249650 40.39
190 Franco Ocampos, Zenon249654 27.30
191 Agdestein, Simen249355 16.29
192 Kudrin, Sergey249154 23.98
193 Radulov, Ivan249150 44.65
194 Groszpeter, Attila249152 23.23
195 Tringov, Georgy P249055 46.48
196 Georgiev, Krum249051 25.27
197 Řgaard, Leif249057 31.65
198 Henley, Ron W248952 26.74
199 Schussler, Harry248952 26.19
200 Malich, Burkhard G248957 46.76
201 Knezevic, Milorad248852 46.83
202 Chiburdanidze, Maia G248855 22.62
203 Inkiov, Ventzislav248850 27.28
204 Velikov, Petar248750 32.42
205 Rogulj, Branko248769 32.08
206 Kraidman, Yair248665 50.83
207 Hazai, Laszlo248654 30.21
208 Díez del Corral, Jesús248560 50.40
209 Birnboim, Nathan248559 32.76
210 Bjelajac, Milan248562 35.46
211 Van der Sterren, Paul248451 27.46
212 Cámpora, Daniel H248455 26.17
213 Soltis, Andrew E248363 36.26
214 Smagin, Sergey248369 24.97
215 Mochalov, Evgeny V248269 31.84
216 Lukacs, Peter248151 33.14
217 Kalinitschew, Sergey248174 27.58
218 Jansa, Vlastimil248049 40.76
219 Peters, John A247965 32.56
220 Plachetka, Jan247950 38.54
221 Bönsch, Uwe247850 24.88
222 Todorcevic, Miodrag247862 42.81
223 Schneider, Lars Ake247754
224 Tatai, Stefano247755 45.44
225 Pribyl, Josef247752 35.89
226 Vera, Reynaldo247753 22.65
227 Antoshin, Vladimir S247765 54.30
228 Podzielny, Karl Heinz247668 28.97
229 Rodriguez, Amador247653 26.97
230 Spiridonov, Nikola247652 45.51
231 Sunye Neto, Jaime247653 26.33
232 Gobet, Fernand247659 21.55
233 Dely, Peter247570 49.15
234 Benko, Pal C247560 55.13
235 Sigurjónsson, Gudmundur247453 35.93
236 Mariotti, Sergio247459 37.06
237 Rajkovic, Dusan247455 41.21
238 Pytel, Krzysztof247456 38.29
239 Portisch, Ferenc247358 44.39
240 Kirov Ivanov, Nino247152 37.97
241 Kindermann, Stefan247151 23.68
242 Adamski, Jan247151 39.80
243 Martinovic, Slobodan247054 38.10
244 Short, Nigel D247050 18.25
245 Mednis, Edmar J247069 46.44
246 Klaric, Zlatko247061 26.85
247 Szekely, Peter246953 28.56
248 Popov, Luben246856 47.59
249 Djukic, Zeljko246865 24.22
250 Hug, Werner246866 30.97
251 Ernst, Thomas246762 23.04
252 Seret, Jean Luc246667
253 Plaskett, Jim246656 23.45
254 Van Wijgerden, Cornelis246655 33.27
255 Sahovic, Dragutin246559 43.06
256 Hecht, Hans-Joachim246461 44.59
257 Ciocaltea, Victor246454 51.62
258 Jelen, Iztok246475 36.62
259 Barczay, Laszlo246354 47.53
260 Kogan, Boris246360
261 Arnason, Jon L246352 22.80
262 Duer, Arne246369 24.14
263 Gutman, Lev246357 37.92
264 Zaltsman, Vitaly F246266 41.85
265 Pekarek, Ales246163 21.71
266 Zaitsev, Igor A246056 45.26
267 Velickovic, Sasa246059 32.41
268 Gruenfeld, Yehuda246055 27.51
269 Karner, Hillar246057 48.09
270 Martz, William E245975
271 Ost Hansen, Jacob245959
272 Ermenkov, Evgenij245951 33.92
273 Eslon, Jaan245966 31.49
274 Dizdar, Goran245956 24.74
275 Stoica, Valentin245956 33.54
276 Mortensen, Erling245851 28.40
277 Prandstetter, Eduard245752 34.71
278 Padevsky, Nikola B245666 50.26
279 Rukavina, Josip245661 40.76
280 Rivas Pastor, Manuel245652 23.13
281 Renman, Nils Gustaf245669
282 Pétursson, Margeir245656 23.54
283 Donchev, Dimitar I245656 25.11
284 Govedarica, Radovan245563 35.55
285 Bisguier, Arthur B245562 53.90
286 Stohl, Igor245562 18.92
287 Taulbut, Shaun M245561 25.64
288 Ghinda, Mihail Viorel245557 34.10
289 Hebden, Mark245453 25.54
290 Strauss, David J245373 37.07
291 Vokác, Marek245362 24.73
292 Bajovic, Milan245365
293 Bastian, Herbert245358 30.72
294 Hartston, William R245264 36.05
295 Lanka, Zigurds245262 23.28
296 Botterill, George Steven245172
297 Ligterink, Gert245152 33.79
298 Wolf, Volker245169 25.98
299 Szmetan, Jorge245061 33.26
300 Hebert, Jean245061 25.80
301 Dobrovolsky, Ladislav245054 32.69
302 Robatsch, Karl244957 54.88
303 Toth, Bela244855 40.37
304 Minic, Dragoljub244873 46.49
305 Schweber, Samuel244762 47.12
306 Doda, Zbigniew244772 52.53
307 McCambridge, Vincent244766 23.48
308 Cvetkovic, Srdjan244758 37.51
309 Bischoff, Klaus244655 22.23
310 Rodriguez, Ruben244658 36.73
311 Fedorowicz, John P244658 24.92
312 Pigusov, Evgeny244664 22.42
313 Helmers, Knut J244554 26.57
314 Ambroz, Jan244552 29.20
315 Commons, Kim S244572 32.11
316 Feustel, Bernd244359 28.94
317 Giorgadze, Giorgi244364 18.89
318 Sznapik, Aleksander244250 32.56
319 Vadasz, Laszlo244265 35.59
320 Hamann, Svend244271 42.90
321 Nei, Iivo244159 51.83
322 Wockenfuss, Klaus244163 32.01
323 Fernandez Garcia, Jose Luis244157 29.33
324 Neckar, Lubomir244159 33.08
325 Scheeren, Peter244055 28.09
326 Langeweg, Kick244053 46.48
327 Greenfeld, Alon243961 19.37
328 Mascarinas, Rico243962 30.50
329 Hermann, Manfred243967 40.99
330 Alexandria, Nana243865 33.88
331 Barlov, Dragan243753 26.59
332 Gurevich, Mikhail N243768 24.53
333 Bouaziz, Slim243756 33.37
334 Sharif, Mershad243575 31.14
335 Donner, Johannes H243562 56.15
336 Raicevic, Vladimir243560 34.33
337 Luczak, Andrzej243565 34.74
338 Wittmann, Walter243557 35.47
339 Gomez Baillo, Jorge H243571 24.37
340 Soppe, Guillermo243472 22.95
341 Szymczak, Zbigniew243453 31.66
342 Littlewood, Paul E243457 27.62
343 Garcia Palermo, Carlos243354 29.75
344 Krnic, Zdenko243259 35.91
345 Kestler, Hans-Günter243263 43.72
346 Lukov, Valentin243254 27.72
347 Nun, Jiri243260 26.09
348 Rubinetti, Jorge A243162 38.42
349 Gruen, Peter243161 26.63
350 Forintos, Gyözö V243157 48.09
351 Kristiansen, Jens243154 31.27
352 Zapata, Alonso243153 25.03
353 Augustin, Josef243074 41.29
354 Imanaliev, Taalaibek243065
355 Tavadian, Ragik243073
356 Tompa, Janos243067 36.34
357 Makropoulos, Georgios243063 29.92
358 Kuligowski, Adam243053 27.69
359 Rodriguez Vargas, Orestes243063 40.16
360 Reefschlaeger, Helmut242958 39.40
361 Hennings, Artur242969 43.14
362 Ravikumar, Vaidyanathan242962 23.68
363 Kunsztowicz, Uwe242870 39.62
364 Jakobsen, Ole242854 40.87
365 Lengyel, Levente242862 50.22
366 Ghitescu, Theodor242861 49.60
367 Ardiansyah, Haji242756 31.74
368 Wirthensohn, Heinz242756 32.32
369 Ornstein, Axel242755 31.35
370 Zichichi, Alvise242767 45.16
371 Shvidler, Eliahu242764 23.70
372 Rantanen, Yrjo A242655 33.36
373 Ostojic, Predrag242575 45.53
374 Hase, Juan Carlos242560
375 Bronstein, Luis242465 37.25
376 Foisor, Ovidiu242455 24.40
377 Kaiszauri, Konstanty242465 30.85
378 Frias, Victor J242455 27.56
379 Wiedenkeller, Michael242366 20.64
380 Palacios, Antonio242263 30.80
381 Levitina, Irina S242265 29.23
382 Lau, Ralf242165 23.87
383 Lalev, Dimitar242157 23.62
384 Bellin, Robert242163 31.17
385 Schneider, Attila242057 28.38
386 Shirazi, Kamran G242063 30.78
387 Hernandez, Roman242052 33.77
388 Horvath, Tamas242055 31.86
389 Sydor, Andrzej242058 46.66
390 Kelecevic, Nedeljko241957 36.47
391 Tiller, Bjorn241959 24.62
392 Braga, Fernando241861 25.14
393 Kagan, Shimon241858 41.40
394 Filipovic, Branko241764 25.90
395 Hausner, Ivan241755 31.38
396 Benjamin, Joel L241657 19.47
397 Olafsson, Helgi241659 27.04
398 Cabrilo, Goran241559 25.16
399 Garcia Martinez, Silvino241552 39.16
400 Trapl, Jindrich241464 41.44
401 Bielczyk, Jacek241353 30.52
402 Goehring, Karl Heinz241363
403 Qi Jingxuan241364 35.81
404 Peev, Peicho Chonev241268 43.41
405 Tisdall, Jonathan D241254 25.01
406 Akesson, Ralf241261 22.56
407 Bohm, Hans241254 33.63
408 Van Voorthuijsen, PW.241276
409 Osmanovic, Kemal241163 42.48
410 Handoko, Edhi240858 23.01
411 Kuijf, Marinus240861 23.55
412 Banas, Jan240857 36.24
413 Haik, Aldo240760 30.87
414 Sideif Sade, Fikret I240768 31.66
415 Borm, Franciscus WM240759
416 Fedder, Steen240760 32.21
417 Petran, Pal240767 36.95
418 Hodgson, Julian M240660 20.10
419 Kuijpers, Franciscus Antonius240674
420 Tomaszewski, Roman240466 23.29
421 Drasko, Milan240463 20.73
422 Brinck Claussen, Bjorn240454
423 Martin Gonzalez, Angel240462 30.66
424 Damjanovic, Mato240358 56.44
425 Sygulski, Artur240353 23.11
426 Nun, Josef240266 50.11
427 Angantysson, Haukur240272 34.75
428 Gerusel, Mathias240274 45.57
429 Danner, Georg240156 36.85
430 Trikaliotis, Georgios240172 44.52
431 Flear, Glenn C240064 24.55
432 Herzog, Adolf240062 30.23
433 Nowak, Ignacy239962 34.64
434 Borik, Otto239957 35.93
435 Pritchett, Craig William239969
436 Budde, Vladimir239866 30.69
437 van Scheltinga, Tjeerd D239868 69.48
438 Pliester, Leon239869 29.03
439 Cramling, Dan239859 24.57
440 Vilela, Jose Luis239752 30.45
441 Westerinen, Heikki MJ239751 39.34
442 Williams, Arthur Howard239675
443 Diaz, Joaquin C239558 35.15
444 Heinbuch, Detlef239570 22.64
445 Davies, Nigel R239463 23.08
446 Bukal, Vladimir Sr239476 43.83
447 Nurkic, Sahbaz239473 27.46
448 Sisniega, Marcel239454 24.09
449 Casper, Thomas239356 24.46
450 Filipowicz, Andrzej239263 45.30
451 Gonsior, Evzen239268 51.73
452 Myagmarsuren, Lhamsuren239168 45.54
453 Welin, Thomas239168 23.98
454 Burger, Karl239155 50.61
455 Karkanaque, Ilir239073
456 Gauglitz, Gernot239063 21.18
457 Sjoberg, Mats238974 24.80
458 Hartoch, Robert G238970
459 Santos, Jose P238867 24.89
460 Velez, Nestor238863 27.32
461 Gross, Stefan238760 34.01
462 Fries Nielsen, Jens Ove238551 23.52
463 Pinal, Nelson Borges238560
464 Murray, J.238569
465 Bellon Lopez, Juan Manuel238454 33.31
466 Skembris, Spyridon238454 25.53
467 Moehring, Guenther238461 46.77
468 Rakic, Tomislav238460 48.80
469 Whitehead, Jay E238461 21.89
470 Sibarevic, Milenko238465 38.47
471 Herbrechtsmeier, Christof238364 29.68
472 Tempone, Marcelo238260 20.98
473 Ochoa de Echaguen, F Javier238262 28.98
474 Filipenko, Alexander V238274 34.49
475 Grigorov, Jordan N238271 29.73
476 Cooper, John Grantley238271
477 Morovic Fernández, Iván E238165 20.44
478 Ksieski, Zbigniew238158 29.66
479 Kouatly, Bachar238061 25.49
480 Dobosz, Henryk238066 30.45
481 Cox, John J238064 21.28
482 Stempin, Pawel238056 24.13
483 Soos, Bela238070 53.48
484 Huss, Andreas237969 32.88
485 Kuzmin, Alexey237970 20.48
486 Brondum, Eric237869 41.71
487 Nicevski, Risto237764 38.18
488 Barle, Janez237773 31.44
489 Rigo, Janos237666 34.84
490 Sarwinski, Miroslaw237662 29.63
491 Novikov, Igor A237676 21.27
492 Swic, Waldemar237563 30.47
493 Skalkotas, Nikolaos237569 33.94
494 Honfi, Karoly237562 52.85
495 Thorsteins, Karl237464 18.88
496 Hartmann, Wolfram237468 27.27
497 Segal, Alexandru Sorin237471 35.91
498 Hartmann, W.237465
499 Liang Jinrong237363 23.28
500 Balinas, Rosendo Carrean237365

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