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Top 10 active players as of October 31, 1980


Top 500 active players as of October 31, 1980

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27874945.7% #329.44
2 Korchnoi, Viktor L27595022.1% #649.61
3 Polugaevsky, Lev A2720506.6% #1545.94
4 Portisch, Lajos2709503.9% #1843.57
5 Kasparov, Garry K2704523.7% #2117.55
6 Timman, Jan H2692471.7% #2428.88
7 Spassky, Boris V2692491.9% #2543.75
8 Geller, Efim P2690511.9% #2755.66
9 Beliavsky, Alexander G2677490.9% #3326.87
10 Hübner, Robert2676491.0% #3331.98
11 Romanishin, Oleg M2676490.9% #3328.81
12 Petrosian, Tigran V2671500.9% #3651.37
13 Tal, Mikhail2671490.7% #3643.97
14 Larsen, Bent2662480.4% #4145.66
15 Balashov, Yury S2660490.4% #4331.63
16 Mecking, Henrique2658712.4% #5528.77
17 Andersson, Ulf2654480.2% #4629.34
18 Ljubojevic, Ljubomir2653490.3% #4829.99
19 Miles, Anthony J2650480.2% #4925.52
20 Gulko, Boris F2646550.4% #5633.73
21 Vaganian, Rafael A2640490.1% #5729.04
22 Hort, Vlastimil2640480.1% #5636.80
23 Jussupow, Artur M2637520.2% #6020.72
24 Gufeld, Eduard E2635550.3% #6444.62
25 Lerner, Konstantin Z2633540.1% #6530.67
26 Tseshkovsky, Vitaly V2633490.1% #6336.10
27 Ribli, Zoltán2629500.1% #6729.15
28 Sosonko, Gennadi2629490.1% #6637.45
29 Vasiukov, Evgeny A2629580.2% #7147.65
30 Dolmatov, Sergey V2624520.1% #7221.70
31 Sveshnikov, Evgeny E262350 #7030.72
32 Kholmov, Ratmir D2621570.2% #7655.47
33 Savon, Vladimir A2619560.1% #7940.10
34 Gheorghiu, Florin261850 #7536.57
35 Kuzmin, Gennady P2618510.1% #7634.78
36 Mikhalchishin, Adrian B261752 #7825.95
37 Psakhis, Lev B2617600.2% #8221.92
38 Makarichev, Sergey Y2617530.1% #7826.95
39 Panchenko, Alexander N2614540.1% #8127.07
40 Kochiev, Alexander2613560.1% #8224.60
41 Sax, Gyula261250 #8129.37
42 Kupreichik, Viktor D261153 #8431.33
43 Rashkovsky, Nukhim N261152 #8334.54
44 Dzindzichashvili, Roman Y261054 #8436.49
45 Dvoretsky, Mark I2609680.4% #9532.89
46 Unzicker, Wolfgang2608560.1% #8855.35
47 Dorfman, Iosif D260652 #8828.50
48 Razuvaev, Yury S260552 #8735.06
49 Ivkov, Borislav260450 #8746.96
50 Smyslov, Vassily V260352 #9059.60
51 Georgadze, Tamaz V260352 #9032.97
52 Parma, Bruno2603580.1% #9338.84
53 Alburt, Lev O260353 #9035.19
54 Eingorn, Viacheslav S2603590.1% #9523.93
55 Palatnik, Semen A2600650.1% #10130.60
56 Kurajica, Bojan260053 #9432.95
57 Gipslis, Aivars2598650.1% #10343.73
58 Bagirov, Vladimir K259854 #9644.21
59 Browne, Walter S259349 #9831.81
60 Kavalek, Lubomir259150 #9937.23
61 Smejkal, Jan259150 #9934.61
62 Gligoric, Svetozar258750 #10457.74
63 Liberzon, Vladimir M258752 #10543.61
64 Seirawan, Yasser258651 #10520.60
65 Nunn, John D M258451 #10725.52
66 Bronstein, David I258357 #11256.70
67 Olafsson, Fridrik258355 #11245.76
68 Evans, Larry M258063 #11948.61
69 Yurtaev, Leonid258062 #11921.50
70 Tarjan, James E257957 #11628.69
71 Taimanov, Mark E257860 #11854.73
72 Petrosian, Arshak B257860 #11826.87
73 Adorján, András257750 #11330.58
74 Szabó, László257664 #12363.62
75 Vitolinš, Alvis257358 #12234.38
76 Tukmakov, Vladimir B257252 #12034.63
77 Matanovic, Aleksandar256864 #13050.44
78 Ftácnik, Lubomír256751 #12423.00
79 Darga, Klaus V256665 #13446.69
80 Ivanov, Igor V2565720.1% #13833.81
81 Quinteros, Miguel A256450 #12632.84
82 Panno, Oscar R256351 #12645.62
83 Byrne, Robert E256151 #12952.53
84 Kapengut, Albert Z256168 #14036.32
85 Nemet, Ivan256156 #13337.55
86 Pachmann, Ludek255758 #13856.47
87 Stean, Michael F255650 #13327.16
88 Kharitonov, Andrey Y255660 #13921.57
89 Lombardy, William J255657 #13642.91
90 Tseitlin, Mikhail S255556 #13733.37
91 Antoshin, Vladimir S255460 #14151.46
92 Najdorf, Miguel255253 #13870.54
93 Speelman, Jonathan S255051 #13924.08
94 Faragó, Iván255049 #13834.58
95 Grigorian, Karen A255054 #14133.15
96 Matulovic, Milan254962 #14645.39
97 Filip, Miroslav254868 #15052.01
98 Chekhov, Valery A254868 #15124.92
99 Timoshchenko, Gennady254757 #14531.51
100 Lein, Anatoly254552 #14349.59
101 Tringov, Georgy P254460 43.65
102 Torre, Eugenio254450 28.98
103 Veingold, Aleksander254468 27.06
104 Bukic, Enver254357 42.91
105 Kovacevic, Vladimir254356 38.60
106 Knaak, Rainer F254250 27.62
107 Pfleger, Helmut254160 37.23
108 Gruenfeld, Yehuda254057 24.67
109 Ree, Hans254050 36.13
110 Nei, Iivo253965 48.99
111 Ubilava, Elizbar E253866 30.18
112 Nikolac, Juraj253756 48.52
113 Suetin, Alexey S253656 53.95
114 Pintér, József253655 26.97
115 Peresipkin, Vladimir253567
116 Rogoff, Kenneth S253461 27.61
117 Schneider, Lars Ake253355
118 Csom, István253350 40.41
119 Kaplan, Julio P253260 30.27
120 Vukic, Milan253255 37.20
121 Uhlmann, Wolfgang253251 45.59
122 Ivanov, Alexander V253156 24.50
123 Lputian, Smbat G253056 22.71
124 Keene, Raymond253053
125 van der Wiel, John T H253051 21.23
126 Shamkovich, Leonid A253052 57.41
127 Zaltsman, Vitaly F252857 39.01
128 Reshevsky, Samuel H252760 68.92
129 Lukin, Andrei M252570 32.17
130 Anikaev, Yury252558 32.34
131 Chernin, Alexander M252372 20.65
132 Díez del Corral, Jesús252267 47.57
133 Zaitsev, Igor A252154 42.43
134 Klovans, Janis252161 45.56
135 Weinstein, Norman252168 30.07
136 Stoica, Valentin252063 30.71
137 Piasetski, Leon David252075
138 Vogt, Lothar H251949 28.79
139 Magerramov, Elmar S251958 22.56
140 Biyiasas, Peter251952 29.94
141 Christiansen, Larry M251852 24.34
142 Radulov, Ivan251557 41.81
143 Bleiman, Yaacov251466 33.15
144 Marjanovic, Slavoljub251452 25.82
145 Vokác, Marek251358 21.90
146 Moiseev, Oleg L251372 55.48
147 Popov, Luben251358 44.76
148 Tatai, Stefano251357 42.61
149 Kakageldyev, Amanmurad251371 30.84
150 Velimirovic, Dragoljub251253 38.47
151 Knezevic, Milorad251253 43.99
152 Malich, Burkhard G251159 43.92
153 Lutikov, Anatoly S251164 47.74
154 Gurgenidze, Bukhuti I251071 46.96
155 Schmidt, Wlodzimierz251051 37.56
156 Donner, Johannes H250957 53.32
157 Marangunic, Srdjan250867 36.99
158 Makropoulos, Georgios250760 27.09
159 Benko, Pal C250759 52.29
160 Peters, John A250655 29.72
161 Petrushin, Alexander I250667 33.64
162 Mnatsakanian, Eduard A250559 41.90
163 Agzamov, Georgy T250561 26.15
164 Sturua, Zurab250265 21.40
165 Hecht, Hans-Joachim250265 41.76
166 Kraidman, Yair250264 47.99
167 Barczay, Laszlo250152 44.69
168 Ermenkov, Evgenij250153 31.09
169 Luczak, Andrzej250154 31.90
170 Kirov Ivanov, Nino250054 35.14
171 Popovic, Petar250057 21.71
172 Zilberstein, Valery I250069 37.55
173 Ungureanu, Emil249872 43.99
174 Suba, Mihai249853 33.41
175 Jansson, Borje249872 38.63
176 Bilek, István249767 48.22
177 Vorotnikov, Vladislav V249767 33.20
178 Polovodin, Igor A249668 25.61
179 Ghinda, Mihail Viorel249455 31.27
180 Vladimirov, Evgeny Y249367 23.78
181 Rodriguez, Amador249160 24.15
182 Lukacs, Peter249052 30.31
183 Padevsky, Nikola B249059 47.42
184 Regan, Kenneth249064 21.13
185 Wedberg, Tom249055 26.92
186 Kuligowski, Adam248952 24.85
187 García Gonzáles, Guillermo248956 26.89
188 Hulak, Krunoslav248964 29.43
189 Langeweg, Kick248853 43.65
190 Platonov, Igor V248861 46.79
191 Sunye Neto, Jaime248854 23.49
192 Marovic, Dražen248762 42.80
193 Minic, Dragoljub248771 43.65
194 Grefe, John A248665 33.15
195 Karlsson, Lars248552 25.30
196 Soltis, Andrew E248568 33.42
197 Zaichik, Gennady L248563 23.72
198 Mednis, Edmar J248557 43.61
199 Plachetka, Jan248549 35.70
200 Hazai, Laszlo248457 27.38
201 Zapata, Alonso248359 22.19
202 Mariotti, Sergio248358 34.22
203 Sigurjónsson, Gudmundur248253 33.10
204 Lechtynsky, Jiri248254 32.93
205 Commons, Kim S248274 29.27
206 Gaprindashvili, Nona248264 39.49
207 Rogulj, Branko248156 29.25
208 Petkevich, Jusefs248170 39.87
209 Zuckerman, Bernard248072 37.58
210 Musil, Vojko248069 35.20
211 Řgaard, Leif248063 28.82
212 Ciocaltea, Victor247955 48.79
213 Ornstein, Axel247854 28.52
214 Ivanovic, Božidar247752 34.19
215 Sahovic, Dragutin247756 40.23
216 Forintos, Gyözö V247557 45.25
217 Inkiov, Ventzislav247556 24.45
218 Piesina, Gintautas247575 28.56
219 Diesen, Mark C247460
220 Damjanovic, Mato247263 53.61
221 Portisch, Ferenc247255 41.56
222 Gavrikov, Victor N247263 23.26
223 Lederman, Leon247168 33.43
224 Karaklajic, Nikola247170 54.69
225 Bradford, Joseph M247063 29.99
226 Rytov, Boris246969
227 Spassov, Liuben246952 37.61
228 Vooremaa, Andres246769 36.28
229 Van Wijgerden, Cornelis246756 30.44
230 Hamann, Svend246767 40.06
231 Jansa, Vlastimil246651 37.92
232 Hartston, William R246656 33.22
233 Espig, Lutz246552 31.82
234 Podzielny, Karl Heinz246562 26.14
235 Cebalo, Mišo246572 35.73
236 Feustel, Bernd246570 26.11
237 Jelen, Iztok246568 33.78
238 Szekely, Peter246559 25.73
239 Vadasz, Laszlo246453 32.76
240 Bisguier, Arthur B246459 51.06
241 Bohm, Hans246451 30.79
242 Hennings, Artur246365 40.30
243 Hausner, Ivan246256 28.54
244 Jakobsen, Ole246257 38.03
245 Raicevic, Vladimir246257 31.49
246 Robatsch, Karl246259 52.05
247 Gutman, Lev246268 35.10
248 Qi Jingxuan246163 32.97
249 Ligterink, Gert246150 30.95
250 Chiburdanidze, Maia G246054 19.79
251 Hernandez, Roman246058 30.93
252 Lengyel, Levente245955 47.38
253 Hug, Werner245860 28.14
254 Schweber, Samuel245859 44.29
255 Prandstetter, Eduard245852 31.88
256 Rajkovic, Dusan245857 38.37
257 Messing, Hrvoje245773 40.26
258 Schussler, Harry245653 23.35
259 Chandler, Murray G245553 20.57
260 Kaufman, Larry C245566 32.95
261 Lakic, Nikola245567 33.29
262 Cramling, Dan245562 21.74
263 Ambroz, Jan245355 26.37
264 Mestel, A Jonathan245352 23.63
265 Bönsch, Uwe245253 22.04
266 Westerinen, Heikki MJ245253 36.51
267 Garcia, Gildardo245263 26.64
268 Szmetan, Jorge245256 30.43
269 Pétursson, Margeir245156 20.71
270 Honfi, Karoly245168 50.02
271 Adamski, Jan245152 36.96
272 Ghitescu, Theodor245155 46.77
273 Garcia, Raimundo245066 44.43
274 Mochalov, Evgeny V245069 29.01
275 Debarnot, Roberto244963 33.24
276 Sideif Sade, Fikret I244858 28.83
277 Velikov, Petar244867 29.59
278 Duer, Arne244865 21.31
279 Gerusel, Mathias244665 42.74
280 Krnic, Zdenko244674 33.08
281 Arnason, Jon L244553 19.96
282 Planinc, Albin244559 36.54
283 Cámpora, Daniel H244563 23.34
284 Rodriguez Vargas, Orestes244460 37.32
285 Rukavina, Josip244371 37.92
286 Pomar Salamanca, Arturo244273 49.16
287 Haik, Aldo244165 28.03
288 Spiridonov, Nikola244154 42.67
289 Zichichi, Alvise244162 42.32
290 Dely, Peter244069 46.32
291 Taulbut, Shaun M244058 22.80
292 Doda, Zbigniew243964 49.69
293 Borik, Otto243964 33.10
294 Castro Rojas, Oscar Humberto243860 27.48
295 Georgiev, Krum243870 22.44
296 Ostojic, Predrag243764 42.69
297 Liebert, Heinz243767 44.44
298 Balinas, Rosendo Carrean243766
299 Pytel, Krzysztof243657 35.46
300 Sydor, Andrzej243562 43.83
301 Jamieson, Robert Murray243573
302 Kestler, Hans-Günter243470 40.88
303 Azmaiparashvili, Zurab A243469 20.62
304 Kunsztowicz, Uwe243364 36.79
305 Birnboim, Nathan243266 29.92
306 Svensson, Bengt243274 20.31
307 Rubinetti, Jorge A243256 35.58
308 Clemens, Christian243267 40.24
309 Joksic, Sinisa243263 40.06
310 Sznapik, Aleksander243151 29.72
311 Pribyl, Josef243152 33.05
312 Tompa, Janos243157 33.50
313 Matera, Salvatore Joseph243164
314 Brinck Claussen, Bjorn243059
315 Wirthensohn, Heinz243063 29.49
316 Martinovic, Slobodan242858 35.27
317 Botterill, George Steven242860
318 Kristiansen, Jens242754 28.43
319 Rodriguez, Ruben242768 33.90
320 Klaric, Zlatko242767 24.02
321 Barle, Janez242762 28.61
322 Groszpeter, Attila242754 20.39
323 Hansson, Dan242669 28.39
324 Wockenfuss, Klaus242568 29.17
325 Bednarski, Jacek B242460 41.63
326 Kuijpers, Franciscus Antonius242463
327 Meduna, Eduard242458 30.14
328 Sisniega, Marcel242466 21.26
329 Tischbierek, Raj242358 18.10
330 Plaskett, Jim242365 20.62
331 Bukal, Vladimir Sr242365 40.99
332 Pokojowczyk, Jerzy242255 31.69
333 Cvetkovic, Srdjan242064 34.67
334 Hoelzl, Franz242057 34.57
335 Toth, Bela242059 37.53
336 Ostermeyer, Peter242074 37.05
337 Burger, Karl242067 47.77
338 Augustin, Josef242057 38.45
339 Ioseliani, Nana242063 18.72
340 Trapl, Jindrich241960 38.60
341 Webb, Simon241962 31.39
342 Garcia Martinez, Silvino241955 36.32
343 Bohosjan, Sarkis241968 39.59
344 Rocha, Antonio241867 36.38
345 Pritchett, Craig William241767
346 Harandi, Khosro241767 30.16
347 Vilela, Jose Luis241655 27.62
348 Cuartas, Carlos241660 40.21
349 Nogueiras, Jesus241665 21.29
350 Ilic, Zoran241667 17.24
351 Vera, Reynaldo241676 19.81
352 Pavlov, Mircea241563 43.13
353 Rohde, Michael A241472 21.18
354 Minev, Nikolay N241465 49.81
355 Djuric, Stefan241363 25.26
356 Ciric, Dragoljub M241365 44.96
357 Bielczyk, Jacek241354 27.69
358 Tomaszewski, Roman241357 20.46
359 Van der Sterren, Paul241153 24.62
360 Renman, Nils Gustaf241163
361 Franco Ocampos, Zenon241158 24.47
362 deFirmian, Nicholas E241061 23.26
363 Fedder, Steen240959 29.38
364 Morris, Walter D240959 22.16
365 Bellin, Robert240954 28.34
366 Lobron, Eric240864 20.48
367 Dueckstein, Andreas240871 53.24
368 Enklaar, Bertus F240864
369 Watson, John L240869 29.15
370 Balshan, Amikam240663
371 Hase, Juan Carlos240663
372 Janoševic, Dragoljub240663 57.31
373 Wittmann, Walter240671 32.63
374 Dobosz, Henryk240454 27.61
375 Bergstrom, Christer240376 22.09
376 Swic, Waldemar240365 27.64
377 Littlewood, Paul E240362 24.79
378 Fedorowicz, John P240155 22.09
379 Hartoch, Robert G240162
380 Lombard, Andre240174 30.12
381 Welin, Thomas240165 21.15
382 Strauss, David J240068 34.23
383 Gonsior, Evzen240061 48.90
384 Gruenberg, Hans Ulrich240066 24.81
385 Law, Andrew P239973 30.31
386 Lau, Ralf239964 21.03
387 Henley, Ron W239965 23.90
388 Peev, Peicho Chonev239971 40.58
389 Gruchacz, Robert239865 26.92
390 Cappello, Renato239767
391 Przewoznik, Jan239656 23.12
392 Garcia Padron, Jose239576 22.61
393 Franklin, Michael J239565 49.74
394 Skrobek, Ryszard239557 29.32
395 Emma, Jaime J239559 42.79
396 Bouaziz, Slim239563 30.54
397 Kagan, Shimon239557 38.57
398 Hoi, Carsten239555 23.79
399 Lanka, Zigurds239469 20.44
400 Vaisman, Volodia239475 42.85
401 Iskov, Gert239355 32.26
402 Nicevski, Risto239360 35.34
403 Short, Nigel D239355 15.41
404 Grigorov, Jordan N239265 26.90
405 Rumens, David E239267 41.11
406 Jacobsen, Bo239175 31.88
407 Sloth, Jorn239163 36.15
408 Coudari, Camille239066 29.26
409 Bellon Lopez, Juan Manuel239057 30.48
410 Goodman, David SC239063
411 Despotovic, Momcilo239069 32.66
412 Taylor, Timothy238974 27.73
413 Kaiszauri, Konstanty238956 28.02
414 Visier Segovia, Fernando238873 37.74
415 Van Riemsdijk, Herman C238857 32.18
416 Wahlbom, Magnus238871 35.46
417 Rigo, Janos238757 32.01
418 Garcia Palermo, Carlos238760 26.91
419 Bronstein, Luis238759 34.41
420 Sibarevic, Milenko238668 35.63
421 Banas, Jan238654 33.41
422 Foygel, Igor238672
423 Nikolic, Predrag238669 20.14
424 Lanc, Alois238475 32.70
425 Mascarinas, Rico238470 27.66
426 Borm, Franciscus WM238461
427 Moehring, Guenther238457 43.93
428 Rogers, Ian238270 20.35
429 Szymczak, Zbigniew238267 28.82
430 Brondum, Eric238265 38.87
431 Segal, Alexandru Sorin238259 33.07
432 Basman, Michael J238166 34.62
433 Cording, Harm238066 43.81
434 Horvath, Tamas237964 29.02
435 Rantanen, Yrjo A237964 30.52
436 Adamski, Andrzej237860 41.80
437 Lieb, Harald237865 45.85
438 Schiffer, Karl Josef237872
439 Rajna, George237669 33.71
440 Benjamin, Joel L237661 16.64
441 Schinzel, Wladyslaw237653 37.44
442 Neckar, Lubomir237565 30.24
443 Akesson, Ralf237565 19.73
444 Frias, Victor J237568 24.72
445 Djukic, Zeljko237571 21.38
446 De Bruycker, Bernard237474 39.38
447 Van der Vliet, Fredrik237460
448 Odendahl, Steven M237462 21.02
449 Cuasnicu, Oscar237366 38.02
450 Pavlovic, Dejan237371
451 Angantysson, Haukur237361 31.91
452 Flear, Glenn C237367 21.72
453 Andres Mendez, Miguel237270
454 Whiteley, Andrew J237268 33.39
455 Mišta, Ladislav237168 36.99
456 Fuller, Maxwell L237156 35.76
457 Paehtz, Thomas Sr237063 24.16
458 Rossetto, Héctor D237065 58.15
459 Scheeren, Peter237058 25.25
460 Biriescu, Ioan237069 27.01
461 Helmers, Knut J237066 23.73
462 Soos, Bela237072 50.65
463 Rosenlund, Thorbjorn237075 29.37
464 Jamroz, Zbigniew236971 46.39
465 Ost Hansen, Jacob236872
466 Filguth, Rubens A236765 24.60
467 Goehring, Karl Heinz236768
468 Fries Nielsen, Jens Ove236655 20.69
469 Ristic, Nenad236571 21.94
470 Sapi, Laszlo236568 45.61
471 Kastner, Jeffrey236473 30.80
472 Bojkovic, Slobodan236475 35.26
473 Hebert, Jean236361 22.96
474 Danner, Georg236260 34.01
475 Giardelli, Sergio C236156 25.34
476 Sikora Lerch, Jan236154
477 Petran, Pal236057 34.13
478 Root, Douglas236066 17.72
479 Hess, Ralf236061 36.59
480 Olafsson, Helgi236060 24.21
481 Lekander, Rolf236065 33.83
482 Cooper, John Grantley235970
483 Nun, Jiri235962 23.26
484 Filipowicz, Andrzej235866 42.47
485 Kengis, Edvins235771 21.55
486 Roos, Louis235774 22.90
487 Watzka, Horst235774 42.13
488 Ionescu, Constantin235767 22.13
489 Szilágyi, György235764 59.32
490 Mortensen, Erling235657 25.57
491 Orso, Miklos235659 24.40
492 Kelecevic, Nedeljko235570 33.64
493 Trois, Francisco RT235555
494 Gross, Stefan235359 31.17
495 Hodgson, Julian M235269 17.27
496 Barreras, Alberto235275 29.57
497 Formanek, Edward W235165 38.48
498 Tempone, Marcelo235060 18.15
499 Hvenekilde, Jorgen234866 45.17
500 Hansen, Curt234871 16.12

These ratings, calculated as of October 31, 1980, incorporate all games (against rated opponents) played in the time between November 1, 1979 and October 31, 1980, along with the ratings that were already calculated as of October 31, 1979. 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, 1980. This represents the player's estimated strength on November 1, 1980.

+/- 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, 1980. The +/- value represents the standard deviation of that estimate; the player's true strength on November 1, 1980 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, 1980. 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, 1980. 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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