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Top 10 active players as of October 31, 1975


Top 500 active players as of October 31, 1975

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27585041.2% #424.44
2 Korchnoi, Viktor L27235015.7% #1044.61
3 Polugaevsky, Lev A2696496.0% #1740.94
4 Petrosian, Tigran V2691494.8% #1846.37
5 Spassky, Boris V2690505.2% #1938.75
6 Geller, Efim P2687504.5% #2050.66
7 Tal, Mikhail2674482.3% #2438.97
8 Tseshkovsky, Vitaly V2662521.8% #3131.10
9 Ljubojevic, Ljubomir2656481.0% #3324.99
10 Vaganian, Rafael A2656501.1% #3324.04
11 Portisch, Lajos2654491.1% #3438.57
12 Kuzmin, Gennady P2650521.1% #3729.78
13 Smyslov, Vassily V2650511.0% #3754.60
14 Mecking, Henrique2647541.1% #4023.77
15 Hübner, Robert2643510.8% #4126.98
16 Hort, Vlastimil2641470.4% #4131.80
17 Smejkal, Jan2640500.5% #4229.61
18 Gulko, Boris F2640530.7% #4328.73
19 Krogius, Nikolay V2638672.2% #5145.27
20 Andersson, Ulf2634480.3% #4524.34
21 Romanishin, Oleg M2630520.4% #4923.81
22 Vasiukov, Evgeny A2629500.3% #4942.65
23 Lein, Anatoly2629651.4% #5644.59
24 Balashov, Yury S2625500.3% #5126.63
25 Gipslis, Aivars2625550.5% #5438.73
26 Liberzon, Vladimir M2624550.4% #5538.61
27 Larsen, Bent2623510.2% #5340.66
28 Browne, Walter S2621490.2% #5426.81
29 Dvoretsky, Mark I2619520.2% #5627.89
30 Gligoric, Svetozar2617490.1% #5652.74
31 Gufeld, Eduard E2615520.2% #5939.62
32 Beliavsky, Alexander G2614500.1% #5921.87
33 Bronstein, David I2606500.1% #6551.70
34 Kholmov, Ratmir D2604510.1% #6750.47
35 Ribli, Zoltán2603490.1% #6724.15
36 Furman, Semen A2602520.1% #6954.91
37 Olafsson, Fridrik2600510.1% #7140.76
38 Savon, Vladimir A2599510.1% #7135.10
39 Tukmakov, Vladimir B259251 #7629.63
40 Velimirovic, Dragoljub259052 #7933.47
41 Averbakh, Yury L2590610.1% #8453.73
42 Evans, Larry M2590600.1% #8343.61
43 Pfleger, Helmut2590540.1% #8032.23
44 Suetin, Alexey S258853 #8148.95
45 Kudriashov, Anatoly A2585720.5% #9433.54
46 Taimanov, Mark E258250 #8449.73
47 Byrne, Robert E258053 #8747.53
48 Chekhov, Valery A2579670.2% #9619.92
49 Matanovic, Aleksandar257955 #8945.44
50 Panno, Oscar R257952 #8940.62
51 Dzindzichashvili, Roman Y2578640.2% #9631.49
52 Szabó, László257851 #8858.62
53 Gheorghiu, Florin257849 #8731.57
54 Unzicker, Wolfgang2578570.1% #9250.35
55 Kavalek, Lubomir257749 #8832.23
56 Pachmann, Ludek257358 #9751.47
57 Alburt, Lev O257153 #9530.19
58 Tseitlin, Mark D2566630.1% #10532.11
59 Darga, Klaus V2566730.2% #11141.69
60 Timman, Jan H256048 #10123.87
61 Uhlmann, Wolfgang255849 #10540.59
62 Karasev, Vladimir I255763 #11337.37
63 Ivkov, Borislav255651 #10741.96
64 Schmid, Lothar M255660 #11347.47
65 Reshevsky, Samuel H255654 #10963.92
66 Nei, Iivo255357 #11443.99
67 Lutikov, Anatoly S255359 #11542.74
68 Bagirov, Vladimir K255359 #11539.21
69 Razuvaev, Yury S255153 #11430.06
70 Timoshchenko, Gennady255160 #11826.51
71 Dorfman, Iosif D255156 #11523.50
72 Tarjan, James E255152 #11423.69
73 Kurajica, Bojan255058 #11727.95
74 Sax, Gyula254849 #11424.37
75 Najdorf, Miguel254855 #11865.54
76 Matulovic, Milan254850 #11440.39
77 Kapengut, Albert Z254763 #12331.32
78 Parma, Bruno254751 #11533.83
79 Sanguinetti, Raúl C254557 #12142.74
80 Sosonko, Gennadi254250 #12032.45
81 Adorján, András254050 #12225.58
82 Hecht, Hans-Joachim253952 #12436.76
83 Radulov, Ivan253852 #12436.81
84 Miles, Anthony J253651 #12520.52
85 Osnos, Viacheslav V253671 #13740.27
86 Nikolac, Juraj253465 #13543.52
87 Bukic, Enver253355 #13137.91
88 Grefe, John A253355 #13128.15
89 Lombardy, William J253352 #12837.90
90 Weinstein, Norman253155 #13225.07
91 Averkin, Orest N253068 #14031.68
92 Kovacevic, Vladimir253059 #13633.60
93 Hulak, Krunoslav252857 #13624.43
94 Kirov Ivanov, Nino252855 #13530.14
95 Klovans, Janis252853 #13440.56
96 Mukhin, Mikhail A252762 #14027.70
97 Rashkovsky, Nukhim N252559 #14029.54
98 Commons, Kim S252455 #13824.27
99 Benko, Pal C252350 #13647.29
100 Panchenko, Alexander N252365 #14522.07
101 Quinteros, Miguel A251950 27.84
102 Sveshnikov, Evgeny E251962 25.72
103 Filip, Miroslav251963 47.01
104 Díez del Corral, Jesús251864 42.57
105 Grigorian, Karen A251754 28.15
106 Ivanov, Igor V251662 28.81
107 Marovic, Dražen251654 37.80
108 Malich, Burkhard G251556 38.92
109 Shereshevsky, Mikhail I251574 25.53
110 Platonov, Igor V251366 41.79
111 Palatnik, Semen A251171 25.60
112 Georgadze, Tamaz V251061 27.97
113 Ciric, Dragoljub M251072 39.96
114 Csom, István250849 35.41
115 Planinc, Albin250649 31.54
116 Antoshin, Vladimir S250667 46.46
117 Torre, Eugenio250652 23.98
118 Kupreichik, Viktor D250455 26.33
119 Grigorian, Levon Ashotovich250473
120 Bobotsov, Milko G250467 44.09
121 Knezevic, Milorad250258 38.99
122 Zaitsev, Igor A250161 37.43
123 Makarichev, Sergey Y250157 21.95
124 Nemet, Ivan250073 32.55
125 Tringov, Georgy P250055 38.65
126 Donner, Johannes H250051 48.32
127 Shamkovich, Leonid A249958 52.41
128 Rogoff, Kenneth S249955 22.61
129 Suttles, Duncan249955 29.85
130 O'Kelly de Galway, Albéric249669 64.45
131 Jansa, Vlastimil249449 32.92
132 Gurgenidze, Bukhuti I249462 41.96
133 Vukcevich, Milan R249365
134 Sigurjónsson, Gudmundur249251 28.10
135 Padevsky, Nikola B249156 42.42
136 Schweber, Samuel249157 39.29
137 Forintos, Gyözö V249050 40.25
138 Westerinen, Heikki MJ249051 31.51
139 Keene, Raymond248850
140 Kraidman, Yair248760 42.99
141 Rodriguez, Amador248763 19.15
142 Lukin, Andrei M248767 27.17
143 Hartston, William R248750 28.22
144 Rytov, Boris248660
145 Ciocaltea, Victor248551 43.79
146 Knaak, Rainer F248450 22.62
147 Ubilava, Elizbar E248368 25.18
148 Spiridonov, Nikola248357 37.67
149 Zilberstein, Valery I248164 32.55
150 Kakageldyev, Amanmurad248175 25.84
151 Bilek, István248151 43.22
152 Karner, Hillar248059 40.26
153 Karaklajic, Nikola247962 49.69
154 Honfi, Karoly247755 45.02
155 Mišta, Ladislav247572 31.99
156 Antunac, Goran247567 30.54
157 Cvetkovic, Srdjan247475 29.67
158 Podgaets, Mikhail Y247458 28.27
159 Dueball, Juergen247355 30.59
160 Schmidt, Wlodzimierz247349 32.56
161 Espig, Lutz247253 26.82
162 Murey, Yakov247271 34.24
163 Kestler, Hans-Günter246959 35.88
164 Vukic, Milan246956 32.20
165 Robatsch, Karl246857 47.05
166 Saidy, Anthony F246758 38.46
167 Barczay, Laszlo246653 39.69
168 Ghizdavu, Dumitru246658 26.44
169 Torán Albero, Román246569 44.06
170 Tatai, Stefano246453 37.61
171 Pribyl, Josef246353 28.05
172 Kaplan, Julio P246357 25.27
173 Zuidema, Coenraad246265
174 Doroshkievich, Vladimir K246259 37.84
175 Raicevic, Vladimir246254 26.49
176 Ostojic, Predrag246154 37.69
177 Soltis, Andrew E246162 28.42
178 Mohrlok, Dieter246170
179 Maric, Rudolf246075 48.47
180 Plachetka, Jan246052 30.70
181 Radev, Nikolai245865 36.86
182 Estrin, Yacov B245767 52.53
183 Yanofsky, Daniel A245558 50.60
184 Rodriguez, Ruben245459 28.89
185 Řgaard, Leif245454 23.82
186 Balinas, Rosendo Carrean245462
187 Hamann, Svend245357 35.06
188 Damjanovic, Mato245353 48.61
189 Bisguier, Arthur B245354 46.06
190 García Gonzáles, Guillermo245252 21.89
191 Suba, Mihai245171 28.41
192 Capelan, Guenter245067 43.26
193 Zuckerman, Bernard244960 32.58
194 Ree, Hans244950 31.13
195 Zhuravliov, Valerij244967 36.88
196 Botterill, George Steven244954
197 Faragó, Iván244852 29.58
198 Mikenas, Vladas244873 65.54
199 Minic, Dragoljub244854 38.65
200 Mariotti, Sergio244753 29.22
201 Moe, Mogens244766 31.63
202 Pomar Salamanca, Arturo244752 44.16
203 Hase, Juan Carlos244668
204 Cosulich, Roberto244664
205 Biyiasas, Peter244658 24.94
206 Martz, William E244655
207 Barcza, Gedeon244660 64.19
208 Calvo Minguez, Ricardo244561 32.02
209 Anikaev, Yury244462 27.34
210 Sofrevski, Jovan244475 40.20
211 Popov, Luben244252 39.76
212 Ghitescu, Theodor244257 41.77
213 Vogt, Lothar H244151 23.79
214 Hennings, Artur244061 35.30
215 Nunn, John D M244056 20.52
216 Ermenkov, Evgenij244055 26.09
217 Bednarski, Jacek B243954 36.63
218 Musil, Vojko243964 30.20
219 Barle, Janez243856 23.61
220 Doda, Zbigniew243853 44.69
221 Jansson, Borje243762 33.63
222 Stean, Michael F243651 22.16
223 Martinovic, Slobodan243674 30.27
224 Lengyel, Levente243651 42.38
225 Janoševic, Dragoljub243555 52.31
226 Castro Rojas, Oscar Humberto243565 22.48
227 Pritchett, Craig William243555
228 Peters, John A243464 24.72
229 Poutiainen, Pertti243456
230 Sliwa, Bogdan243472 53.74
231 Mednis, Edmar J243352 38.61
232 Rath, Ulrik243368 28.84
233 Gerusel, Mathias243257 37.74
234 Rodriguez Vargas, Orestes243257 32.32
235 Piasetski, Leon David243270
236 Garcia Martinez, Silvino243149 31.32
237 Enklaar, Bertus F243151
238 Szmetan, Jorge243055 25.43
239 Ornstein, Axel243053 23.52
240 Kuijpers, Franciscus Antonius243056
241 Pilnik, Herman242863 61.81
242 Vranesic, Zvonko242864 37.07
243 Amos, Bruce M242672 28.83
244 Rukavina, Josip242654 32.92
245 Krnic, Zdenko242672 28.08
246 Atanasov, Petko242669 27.80
247 Haag, Ervin242664 42.80
248 Schiffer, Karl Josef242570
249 Bohm, Hans242452 25.79
250 Dely, Peter242454 41.32
251 Boey, Josef242464 41.46
252 Hernandez, Roman242454 25.93
253 Portisch, Ferenc242157 36.56
254 Minev, Nikolay N242163 44.81
255 Partos, Charles242167 39.22
256 Flesch, Janos242058 42.09
257 Jiménez Zerquera, Eleazar242067 47.35
258 Mochalov, Evgeny V242075 24.01
259 Gilden, Lawrence C241971
260 McKay, Roderick M241965 23.72
261 Jakobsen, Ole241967 33.03
262 Liebert, Heinz241852 39.44
263 Chellstorp, Craig V241761
264 Ruderfer, Mark B241772
265 Eising, Johannes241655 40.42
266 Clarke, Peter H241572
267 Gaprindashvili, Nona241568 34.49
268 Zilberman, Nathan R241568 35.49
269 Hazai, Laszlo241460 22.38
270 Rossetto, Héctor D241355 53.15
271 Grinberg, Ricardo241163 27.80
272 Scholl, Eddie C241164 31.04
273 Hug, Werner241055 23.14
274 Pintér, József240954 21.97
275 Szekely, Peter240964 20.73
276 Augustin, Josef240857 33.45
277 Buljovcic, Ivan240864 38.84
278 Langeweg, Kick240751 38.65
279 Schneider, Lars Ake240664
280 Sydor, Andrzej240657 38.83
281 Johannessen, Svein240462 38.04
282 Sinclair, Ian240375
283 Foguelman, Alberto240369 52.05
284 Bellon Lopez, Juan Manuel240353 25.48
285 Matera, Salvatore Joseph240362
286 Shmit, Anatoly240274 34.16
287 Andersen, Borge240270 41.62
288 Zwaig, Arne240260
289 Kovacs, Laszlo M240258 37.07
290 Vadasz, Laszlo240152 27.76
291 Cobo Arteaga, Eldis240159
292 Lehmann, Heinz Dr240063
293 Lechtynsky, Jiri240056 27.93
294 Seret, Jean Luc239970
295 Webb, Simon239956 26.39
296 Mestrovic, Zvonimir239863 31.04
297 Penrose, Jonathan239761 42.06
298 Garcia, Raimundo239756 39.43
299 Pytel, Krzysztof239652 30.46
300 Mestel, A Jonathan239554 18.63
301 Jankovec, Ivan239471 37.04
302 Cuéllar Gacharná, Miguel239472 58.95
303 Sapi, Laszlo239474 40.61
304 Deze, Anton239461
305 Williams, Arthur Howard239458
306 Myagmarsuren, Lhamsuren239373 37.70
307 Rajkovic, Dusan239259 33.37
308 Ligterink, Gert239157 25.95
309 Mikhalchishin, Adrian B239075 20.95
310 Garcia, Wilfredo239064 20.93
311 Neckar, Lubomir238958 25.24
312 Littlewood, John Eric238971
313 Cuasnicu, Oscar238858 33.02
314 Peev, Peicho Chonev238657 35.58
315 Spassov, Liuben238660 32.61
316 Cuartas, Carlos238562 35.21
317 Butnorius, Algimantas238564 28.94
318 Denker, Arnold S238565 61.69
319 van Scheltinga, Tjeerd D238562 61.65
320 Bohosjan, Sarkis238568 34.59
321 Bronstein, Luis238561 29.41
322 Kinnmark, Ove238559 30.85
323 Haygarth, Michael J238564
324 Rajna, George238460 28.71
325 Ungureanu, Emil238471 38.99
326 Macles, Jacques238372 30.31
327 Ujtumen, Tudev238374 36.18
328 Basman, Michael J238356 29.62
329 Adamski, Jan238352 31.96
330 Rubinetti, Jorge A237953 30.58
331 Uddenfeldt, Dan237967 24.59
332 Czerniak, Moshe237862 65.74
333 Rantanen, Yrjo A237858 25.52
334 Hartoch, Robert G237853
335 Kostro, Jerzy237660 38.77
336 Vladimirov, Evgeny Y237569 18.78
337 Markland, Peter R237560 24.55
338 Filipowicz, Andrzej237556 37.47
339 Lukacs, Peter237556 25.31
340 Bordonada, Glenn237272
341 Blatny, Frantisek237274 42.58
342 Masic, Ljubomir237265 39.32
343 Stoica, Valentin237273 25.71
344 Karklins, Andrew237261 28.55
345 Sznapik, Aleksander237054 24.72
346 Kushnir, Alla237063
347 Kupka, Slavoj237064 33.31
348 Nicevski, Risto237057 30.34
349 Schoeneberg, Manfred236974 29.32
350 Perkins, Alan H236968 26.62
351 Toth, Bela236959 32.53
352 Rosenlund, Thorbjorn236871 24.37
353 Zichichi, Alvise236768 37.32
354 Pavlov, Mircea236769 38.13
355 Van Riemsdijk, Herman C236671 27.18
356 Bellin, Robert236661 23.34
357 Campos Lopez, Mario236666 32.46
358 Fuller, Maxwell L236560 30.76
359 Iskov, Gert236560 27.26
360 Wade, Robert Graham236459
361 Visier Segovia, Fernando236358 32.74
362 Ingerslev, Age236373 42.06
363 Dake, Arthur William236367 65.56
364 De la Vega, Hector236158 49.62
365 Tseitlin, Mikhail S236176 28.37
366 Corden, Martyn J236163
367 Gasic, Bozidar236062 38.05
368 Popov, Nikolay236071
369 Gesos, Pavlos236061 30.43
370 Hindle, Owen M235970 35.63
371 Emma, Jaime J235958 37.79
372 Diesen, Mark C235862
373 Zinn, Lothar235863 37.62
374 Kagan, Shimon235766 33.57
375 Prandstetter, Eduard235775 26.87
376 Boudy, Julio235763 24.39
377 Braun, Gottfried235673 42.34
378 Eley, Brian235564
379 Knox, Victor W235567 30.77
380 Rodriguez Gonzales, Jesus235561
381 Brond, Victor235562
382 Ekstroem, Roland235476 19.44
383 Garcia, Horacio235474
384 Balcerowski, Witold235468 40.22
385 Velikov, Petar235164 24.59
386 Pavlenko, Oleg235072
387 Pesantes Carbajal, Carlos234863
388 Mueller, Klaus Uwe234858
389 Ghinda, Mihail Viorel234869 26.27
390 Ek, Hans234756 47.07
391 Maciejewski, Andrzej234761 24.31
392 Szymczak, Zbigniew234661 23.82
393 Lanc, Alois234559 27.70
394 Pelikán, Jorge234564 69.52
395 Horner, Jeff234464 26.18
396 Banas, Jan234459 28.41
397 Tompa, Janos234456 28.50
398 Quinones, Oscar Carillo234173
399 Nikolic, Stanimir234168 40.76
400 Akvist, Hakan234161 34.01
401 Levy, David Neil Lawrence234059
402 Poulsson, Eivind233976 32.90
403 Petran, Pal233961 29.13
404 Pinal, Nelson Borges233971
405 Yepez Obando, Olavo233971
406 Baumbach, Friedrich233867 40.15
407 Grabczewski, Romuald233858 43.73
408 Kunsztowicz, Uwe233772 31.79
409 Fichtl, Jirí233761 54.71
410 Speelman, Jonathan S233763 19.08
411 Szilágyi, György233664 54.32
412 Urzica, Aurel233664 22.96
413 Lombard, Andre233656 25.12
414 Vogel, Jaap233564 27.58
415 Holm, Sejer233560 36.22
416 Nagy, Ervin233576 30.25
417 Schaufelberger, Heinz233471 27.94
418 Soler, Alberto233469
419 Ostermeyer, Peter233461 32.05
420 Kristiansen, Erling233258 38.87
421 Dieks, Roy G233158 19.75
422 Horvath, Tamas233165 24.02
423 Camara, Helder233066 38.73
424 Borngaesser, Rene233062 24.11
425 Paehtz, Thomas Sr232959 19.16
426 Kaufman, Larry C232972 27.95
427 Kluger, Guyla232971 61.79
428 Pietrusiak, Bogdan232968 42.30
429 Bouaziz, Slim232974 25.54
430 Wirthensohn, Heinz232869 24.49
431 Barreras, Alberto232772 24.57
432 Naranja, Renato232660 35.10
433 De Greif, Boris232661 45.72
434 Jacobsen, Bo232672 26.88
435 Starck, Bodo232564 41.05
436 Tan Lian Ann232574
437 Ludgate, Alan232574 30.17
438 Poch, Cesar Guillermo232571
439 Beil, Zdenek232472 22.20
440 Whiteley, Andrew J232466 28.39
441 Silva, Fernando232270 25.24
442 Georgiev, Krum232273 17.44
443 Grigorov, Jordan N232273 21.89
444 Liljedahl, Lennart232062 28.18
445 Beyen, Roland232072 43.57
446 Cooper, John Grantley231974
447 Todorcevic, Miodrag231974 34.97
448 Neukirch, Detlef231873 35.23
449 Kozlov, Vladimir N231874 25.42
450 Casas, Fernando231869 49.19
451 Van Baarle, C John231767 30.53
452 Van Geet, Dirk Daniel231773 43.66
453 Hutchings, Stuart J231663
454 Bönsch, Uwe231659 17.04
455 Barnes, Craig N231573
456 Hansson, Dan231575 23.39
457 Meduna, Eduard231473 25.14
458 Menvielle Lacourrelle, Augusto231366 37.22
459 Osterman, Rudolf231261 29.28
460 Alexandria, Nana231264 26.05
461 Kolbak, Jens231173 30.74
462 Estevez Morales, Guillermo231153
463 Garcia, H.231169
464 Cibulka, Vladimir231070 33.99
465 Cardoso, Radolfo Tan230954
466 Franzen, Jozef230968 29.73
467 Schinzel, Wladyslaw230959 32.44
468 Hoen, Ragnar230964 35.07
469 Lebredo, Gerardo230758 25.24
470 Janetschek, Karl230670 35.54
471 Gulbrandsen, Arne Vinje230568
472 Debarnot, Roberto230556 28.24
473 Cafferty, Bernard230560 41.34
474 Moehring, Guenther230355 38.93
475 Gutman, Lev230270 30.10
476 Diaz, Joaquin C230160 27.32
477 Allan, Denis230172 30.94
478 Wibe, Terje229764 28.07
479 Helmertz, Per Inge229769
480 Hausner, Ivan229673 23.54
481 Ardiansyah, Haji229665 23.90
482 Norby, Peter H229470 35.34
483 Medina García, Antonio A229458 56.08
484 Ljungqvist, Lennart229175
485 Antonov, Vladimir229069 25.97
486 Gross, Stefan229076 26.17
487 Bachtiar, Arovah229069 41.60
488 Gereben, Ernö229066 68.37
489 Kristinsson, Jon228969 33.37
490 Bengtsson, Bo228974 28.17
491 Perecz, Laszlo228864 31.36
492 Timman, Ton228864 27.33
493 Vinje Gulbrandsen, Arne228867
494 Wagman, Stuart228875 56.46
495 Ujtelky, Maximilián228765 60.53
496 Novak, Ivan228760 32.76
497 Thal, Olaf228665 39.87
498 Brondum, Eric228575 33.87
499 Orev, Petar228471 41.40
500 Marszalek, Rafal228374 34.91

These ratings, calculated as of October 31, 1975, incorporate all games (against rated opponents) played in the time between November 1, 1974 and October 31, 1975, along with the ratings that were already calculated as of October 31, 1974. 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, 1975. This represents the player's estimated strength on November 1, 1975.

+/- 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, 1975. The +/- value represents the standard deviation of that estimate; the player's true strength on November 1, 1975 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, 1975. 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, 1975. 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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