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Top 10 active players as of August 31, 1975


Top 500 active players as of August 31, 1975

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27584941.4% #424.27
2 Korchnoi, Viktor L27265017.4% #944.44
3 Polugaevsky, Lev A2698496.7% #1540.78
4 Spassky, Boris V2693505.8% #1838.59
5 Petrosian, Tigran V2690494.8% #1846.21
6 Geller, Efim P2679493.0% #2350.50
7 Tal, Mikhail2673482.2% #2538.81
8 Tseshkovsky, Vitaly V2671532.7% #2730.93
9 Ljubojevic, Ljubomir2659481.2% #3124.83
10 Vaganian, Rafael A2656501.1% #3323.87
11 Portisch, Lajos2649490.8% #3538.41
12 Mecking, Henrique2645541.0% #4023.61
13 Hübner, Robert2645510.7% #3926.82
14 Kuzmin, Gennady P2642520.8% #4129.62
15 Smyslov, Vassily V2642500.6% #4054.44
16 Hort, Vlastimil2642470.4% #3931.64
17 Smejkal, Jan2640500.5% #4129.44
18 Krogius, Nikolay V2639662.0% #4845.11
19 Gulko, Boris F2636530.6% #4528.56
20 Vasiukov, Evgeny A2636510.5% #4442.49
21 Andersson, Ulf2633480.2% #4524.18
22 Gipslis, Aivars2625550.4% #5338.56
23 Balashov, Yury S2625500.2% #5126.47
24 Lein, Anatoly2624640.9% #5844.43
25 Liberzon, Vladimir M2624550.4% #5438.44
26 Browne, Walter S2623490.2% #5126.64
27 Larsen, Bent2622510.2% #5340.49
28 Gufeld, Eduard E2619530.2% #5539.45
29 Gligoric, Svetozar2619480.1% #5452.58
30 Dvoretsky, Mark I2617520.2% #5727.73
31 Tukmakov, Vladimir B2614510.2% #5829.46
32 Romanishin, Oleg M2611520.1% #6123.64
33 Savon, Vladimir A2610510.1% #6134.92
34 Beliavsky, Alexander G2608500.1% #6221.71
35 Ribli, Zoltán2605490.1% #6423.98
36 Kholmov, Ratmir D2604510.1% #6650.30
37 Olafsson, Fridrik2600510.1% #6940.60
38 Furman, Semen A2599520.1% #7054.75
39 Pfleger, Helmut2592540.1% #7632.07
40 Evans, Larry M2592600.2% #8043.44
41 Suetin, Alexey S259153 #7748.79
42 Velimirovic, Dragoljub259152 #7633.30
43 Bronstein, David I259050 #7651.53
44 Averbakh, Yury L2586610.1% #8653.56
45 Kudriashov, Anatoly A2584730.5% #9533.37
46 Pachmann, Ludek2581600.1% #8951.30
47 Matanovic, Aleksandar258054 #8645.27
48 Unzicker, Wolfgang257857 #8950.18
49 Szabó, László257851 #8658.45
50 Taimanov, Mark E257850 #8649.57
51 Gheorghiu, Florin257649 #8631.40
52 Byrne, Robert E257652 #8947.36
53 Kavalek, Lubomir257649 #8732.06
54 Dzindzichashvili, Roman Y2573630.1% #9831.32
55 Panno, Oscar R257352 #9240.46
56 Karasev, Vladimir I2572620.1% #9937.21
57 Alburt, Lev O256953 #9630.03
58 Ivkov, Borislav256551 #9741.80
59 Bagirov, Vladimir K256059 #10739.04
60 Timman, Jan H255948 #10223.71
61 Uhlmann, Wolfgang255849 #10240.42
62 Darga, Klaus V2558700.1% #11541.52
63 Schmid, Lothar M255760 #11147.31
64 Reshevsky, Samuel H255554 #10963.76
65 Lutikov, Anatoly S255458 #11242.57
66 Razuvaev, Yury S255354 #10929.88
67 Nei, Iivo255357 #11243.83
68 Najdorf, Miguel255255 #11265.38
69 Matulovic, Milan255150 #11040.22
70 Sax, Gyula254949 #11024.20
71 Kurajica, Bojan254958 #11627.79
72 Tarjan, James E254953 #11423.53
73 Kapengut, Albert Z254862 #12031.16
74 Parma, Bruno254851 #11333.67
75 Grigorian, Karen A254554 #11827.98
76 Radulov, Ivan254252 #11936.65
77 Sanguinetti, Raúl C254157 #12342.58
78 Adorján, András254050 #11925.42
79 Averkin, Orest N253864 #12931.52
80 Sosonko, Gennadi253751 #12232.29
81 Osnos, Viacheslav V2537710.1% #13540.10
82 Hecht, Hans-Joachim253652 #12536.59
83 Tseitlin, Mark D253363 #13331.93
84 Nikolac, Juraj253365 #13543.36
85 Grefe, John A253355 #12927.98
86 Bukic, Enver253355 #12937.75
87 Hulak, Krunoslav253357 #13024.27
88 Weinstein, Norman253155 #13124.90
89 Lombardy, William J253152 #12937.74
90 Kirov Ivanov, Nino252755 #13329.97
91 Mukhin, Mikhail A252762 #13927.53
92 Kovacevic, Vladimir252759 #13733.43
93 Commons, Kim S252555 #13624.11
94 Miles, Anthony J252552 #13420.36
95 Quinteros, Miguel A252350 #13527.68
96 Benko, Pal C252250 #13547.13
97 Malich, Burkhard G252055 #14138.76
98 Filip, Miroslav251862 #14646.84
99 Kupreichik, Viktor D251655 #14426.16
100 Marovic, Dražen251654 #14337.63
101 Díez del Corral, Jesús251665 42.40
102 Ivanov, Igor V251675 28.65
103 Georgadze, Tamaz V251460 27.81
104 Palatnik, Semen A251471 25.43
105 Sveshnikov, Evgeny E251359 25.55
106 Ciric, Dragoljub M251371 39.80
107 Klovans, Janis251254 40.39
108 Rashkovsky, Nukhim N251160 29.37
109 Platonov, Igor V251165 41.62
110 Csom, István251049 35.25
111 Knezevic, Milorad250857 38.83
112 Planinc, Albin250649 31.37
113 Antoshin, Vladimir S250567 46.30
114 Gurgenidze, Bukhuti I250562 41.80
115 Bobotsov, Milko G250464 43.91
116 Grigorian, Levon Ashotovich250273
117 Nemet, Ivan250273 32.38
118 Shamkovich, Leonid A250158 52.25
119 Suttles, Duncan250155 29.69
120 Zaitsev, Igor A250161 37.26
121 Donner, Johannes H250051 48.15
122 Rogoff, Kenneth S250055 22.44
123 Vukic, Milan249957 32.03
124 Ubilava, Elizbar E249968 25.01
125 Torre, Eugenio249952 23.82
126 O'Kelly de Galway, Albéric249668 64.29
127 Padevsky, Nikola B249655 42.26
128 Jansa, Vlastimil249549 32.76
129 Podgaets, Mikhail Y249460 28.11
130 Sigurjónsson, Gudmundur249450 27.93
131 Makarichev, Sergey Y249357 21.79
132 Schweber, Samuel249358 39.12
133 Vukcevich, Milan R249265
134 Forintos, Gyözö V249250 40.09
135 Westerinen, Heikki MJ249151 31.34
136 Tringov, Georgy P249154 38.48
137 Kraidman, Yair249059 42.83
138 Spiridonov, Nikola248857 37.51
139 Hartston, William R248850 28.05
140 Keene, Raymond248850
141 Rodriguez, Amador248763 18.97
142 Rytov, Boris248660
143 Ciocaltea, Victor248651 43.62
144 Cvetkovic, Srdjan248475 29.51
145 Kakageldyev, Amanmurad248375 25.68
146 Dorfman, Iosif D248360 23.33
147 Murey, Yakov248371 34.08
148 Bilek, István248250 43.05
149 Knaak, Rainer F248050 22.46
150 Karner, Hillar247959 40.09
151 Karaklajic, Nikola247962 49.52
152 Schmidt, Wlodzimierz247749 32.39
153 Honfi, Karoly247755 44.84
154 Kestler, Hans-Günter247658 35.72
155 Antunac, Goran247567 30.37
156 Timoshchenko, Gennady247566 26.34
157 Mišta, Ladislav247572 31.83
158 Espig, Lutz247553 26.65
159 García Gonzáles, Guillermo247452 21.73
160 Mohrlok, Dieter247470
161 Dueball, Juergen247355 30.42
162 Radev, Nikolai247265 36.70
163 Zilberstein, Valery I247064 32.38
164 Kaplan, Julio P246856 25.10
165 Robatsch, Karl246757 46.87
166 Barczay, Laszlo246753 39.53
167 Pribyl, Josef246653 27.88
168 Saidy, Anthony F246658 38.29
169 Maric, Rudolf246475 48.30
170 Torán Albero, Román246468 43.89
171 Raicevic, Vladimir246254 26.33
172 Tatai, Stefano246252 37.44
173 Ghizdavu, Dumitru246258 26.28
174 Biyiasas, Peter246158 24.78
175 Soltis, Andrew E246162 28.26
176 Plachetka, Jan246152 30.54
177 Doroshkievich, Vladimir K246159 37.68
178 Zuidema, Coenraad246063
179 Barle, Janez245856 23.44
180 Estrin, Yacov B245867 52.36
181 Ostojic, Predrag245754 37.53
182 Zhuravliov, Valerij245768 36.72
183 Damjanovic, Mato245653 48.44
184 Ree, Hans245449 30.95
185 Yanofsky, Daniel A245458 50.43
186 Rodriguez, Ruben245459 28.73
187 Balinas, Rosendo Carrean245362
188 Řgaard, Leif245354 23.65
189 Zuckerman, Bernard245360 32.42
190 Botterill, George Steven245154
191 Suba, Mihai245171 28.25
192 Amos, Bruce M245170 28.67
193 Lukin, Andrei M245068 27.01
194 Mariotti, Sergio244952 29.06
195 Moe, Mogens244966 31.47
196 Capelan, Guenter244966 43.09
197 Mikenas, Vladas244873 65.37
198 Faragó, Iván244852 29.41
199 Minic, Dragoljub244854 38.49
200 Pomar Salamanca, Arturo244752 43.99
201 Vogt, Lothar H244750 23.62
202 Martz, William E244755
203 Sofrevski, Jovan244774 40.04
204 Hamann, Svend244657 34.89
205 Barcza, Gedeon244660 64.03
206 Hennings, Artur244659 35.14
207 Bisguier, Arthur B244654 45.89
208 Cosulich, Roberto244363
209 Ghitescu, Theodor244357 41.60
210 Popov, Luben244252 39.59
211 Calvo Minguez, Ricardo244261 31.85
212 Ermenkov, Evgenij244255 25.92
213 Bednarski, Jacek B244054 36.47
214 Anikaev, Yury244062 27.17
215 Musil, Vojko243964 30.04
216 Nunn, John D M243956 20.35
217 Doda, Zbigniew243853 44.53
218 Ornstein, Axel243853 23.35
219 Jansson, Borje243761 33.47
220 Poutiainen, Pertti243756
221 Martinovic, Slobodan243774 30.10
222 Stean, Michael F243651 21.98
223 Lengyel, Levente243551 42.22
224 Piasetski, Leon David243570
225 Hase, Juan Carlos243566
226 Janoševic, Dragoljub243455 52.15
227 Sliwa, Bogdan243372 53.57
228 Castro Rojas, Oscar Humberto243365 22.31
229 Peters, John A243364 24.56
230 Pritchett, Craig William243255
231 Mednis, Edmar J243252 38.44
232 Gerusel, Mathias243257 37.57
233 Vranesic, Zvonko243163 36.90
234 Buljovcic, Ivan243172 38.68
235 Enklaar, Bertus F243151
236 Garcia Martinez, Silvino243149 31.16
237 Pilnik, Herman242963 61.65
238 Rath, Ulrik242868 28.68
239 Kuijpers, Franciscus Antonius242856
240 Minev, Nikolay N242763 44.65
241 Krnic, Zdenko242772 27.91
242 Atanasov, Petko242769 27.63
243 Rukavina, Josip242754 32.76
244 Haag, Ervin242664 42.64
245 Jiménez Zerquera, Eleazar242667 47.18
246 Schiffer, Karl Josef242669
247 Rodriguez Vargas, Orestes242657 32.16
248 Portisch, Ferenc242557 36.39
249 Bohm, Hans242452 25.63
250 Dely, Peter242454 41.15
251 Flesch, Janos242458 41.91
252 Szmetan, Jorge242356 25.26
253 Neckar, Lubomir242257 25.08
254 Ruderfer, Mark B242172
255 Mochalov, Evgeny V242175 23.83
256 Chellstorp, Craig V241961
257 Eising, Johannes241855 40.25
258 Liebert, Heinz241852 39.27
259 Gilden, Lawrence C241871
260 McKay, Roderick M241864 23.55
261 Hazai, Laszlo241560 22.21
262 Scholl, Eddie C241564 30.87
263 Mueller, Klaus Uwe241458
264 Gaprindashvili, Nona241468 34.33
265 Clarke, Peter H241371
266 Boey, Josef241263 41.29
267 Grinberg, Ricardo241163 27.63
268 Augustin, Josef241057 33.29
269 Pintér, József241054 21.81
270 Rossetto, Héctor D240955 52.97
271 Szekely, Peter240964 20.56
272 Langeweg, Kick240951 38.48
273 Hernandez, Roman240854 25.77
274 Schneider, Lars Ake240864
275 Sydor, Andrzej240757 38.66
276 Johannessen, Svein240762 37.87
277 Bellon Lopez, Juan Manuel240653 25.31
278 Jakobsen, Ole240564 32.86
279 Matera, Salvatore Joseph240462
280 Cuéllar Gacharná, Miguel240469 58.79
281 Vadasz, Laszlo240452 27.59
282 Zwaig, Arne240460
283 Andersen, Borge240470 41.45
284 Lechtynsky, Jiri240356 27.77
285 Foguelman, Alberto240369 51.88
286 Cuasnicu, Oscar240258 32.85
287 Bronstein, Luis240261 29.25
288 Garcia, Raimundo240255 39.26
289 Haygarth, Michael J240064
290 Lehmann, Heinz Dr240063
291 Mestrovic, Zvonimir240063 30.87
292 Kovacs, Laszlo M240058 36.90
293 Pytel, Krzysztof239852 30.29
294 Seret, Jean Luc239770
295 Penrose, Jonathan239761 41.89
296 Mestel, A Jonathan239654 18.47
297 Jankovec, Ivan239671 36.87
298 Hug, Werner239654 22.97
299 Cobo Arteaga, Eldis239559
300 Rajkovic, Dusan239558 33.21
301 Sapi, Laszlo239474 40.45
302 Webb, Simon239456 26.22
303 Myagmarsuren, Lhamsuren239370 37.54
304 Ungureanu, Emil239368 38.83
305 Williams, Arthur Howard239258
306 Partos, Charles239266 39.06
307 Ligterink, Gert239157 25.79
308 Mikhalchishin, Adrian B239075 20.79
309 Garcia, Wilfredo238964 20.77
310 Littlewood, John Eric238871
311 Cuartas, Carlos238862 35.04
312 Bohosjan, Sarkis238768 34.43
313 van Scheltinga, Tjeerd D238662 61.48
314 Deze, Anton238664
315 Zilberman, Nathan R238668 35.33
316 Butnorius, Algimantas238665 28.78
317 Adamski, Jan238652 31.80
318 Hartoch, Robert G238653
319 Ujtumen, Tudev238569 36.01
320 Rajna, George238460 28.55
321 Denker, Arnold S238365 61.53
322 Basman, Michael J238256 29.46
323 Kinnmark, Ove238259 30.69
324 Macles, Jacques238272 30.15
325 Spassov, Liuben238260 32.44
326 Kostro, Jerzy238159 38.60
327 Shmit, Anatoly237974 33.99
328 Rubinetti, Jorge A237853 30.42
329 Peev, Peicho Chonev237657 35.41
330 Filipowicz, Andrzej237656 37.30
331 Belkadi, Ridha237675 50.35
332 Bellin, Robert237661 23.17
333 Nicevski, Risto237557 30.18
334 Lukacs, Peter237456 25.14
335 Vladimirov, Evgeny Y237469 18.61
336 Van Riemsdijk, Herman C237472 27.01
337 Blatny, Frantisek237374 42.41
338 Masic, Ljubomir237265 39.15
339 Stoica, Valentin237273 25.54
340 Sznapik, Aleksander237254 24.56
341 Markland, Peter R237260 24.38
342 Perkins, Alan H237268 26.45
343 Rosenlund, Thorbjorn237271 24.20
344 Kupka, Slavoj237164 33.15
345 Karklins, Andrew237161 28.38
346 Bordonada, Glenn237172
347 Gasic, Bozidar236862 37.88
348 Iskov, Gert236860 27.09
349 Czerniak, Moshe236862 65.58
350 Pavlov, Mircea236769 37.96
351 Wade, Robert Graham236759
352 Wirthensohn, Heinz236567 24.32
353 Dake, Arthur William236567 65.40
354 Ingerslev, Age236573 41.88
355 De la Vega, Hector236358 49.46
356 Emma, Jaime J236357 37.62
357 Zichichi, Alvise236367 37.16
358 Corden, Martyn J236263
359 Braun, Gottfried236273 42.17
360 Toth, Bela236260 32.37
361 Zinn, Lothar236261 37.45
362 Kushnir, Alla236263
363 Campos Lopez, Mario236065 32.29
364 Prandstetter, Eduard236075 26.71
365 Balcerowski, Witold235968 40.06
366 Tseitlin, Mikhail S235976 28.21
367 Horner, Jeff235864 26.02
368 Popov, Nikolay235871
369 Rodriguez Gonzales, Jesus235861
370 Visier Segovia, Fernando235857 32.58
371 Ekstroem, Roland235876 19.28
372 Gesos, Pavlos235761 30.27
373 Sinclair, Ian235773
374 Fichtl, Jirí235762 54.54
375 Brond, Victor235762
376 Diesen, Mark C235762
377 Hindle, Owen M235768 35.46
378 Fuller, Maxwell L235759 30.59
379 Schoeneberg, Manfred235470 29.15
380 Garcia, Horacio235474
381 Kagan, Shimon235465 33.40
382 Velikov, Petar235464 24.42
383 Uddenfeldt, Dan235366 24.42
384 Kaldor, Avraham235276 28.28
385 Boudy, Julio235163 24.22
386 Ghinda, Mihail Viorel235069 26.10
387 Nagy, Ervin234976 30.09
388 Szymczak, Zbigniew234961 23.66
389 Pavlenko, Oleg234972
390 Eley, Brian234864
391 Maciejewski, Andrzej234761 24.14
392 Lanc, Alois234659 27.54
393 Ek, Hans234657 46.90
394 Akvist, Hakan234661 33.84
395 Banas, Jan234559 28.24
396 Tompa, Janos234456 28.34
397 Pelikán, Jorge234464 69.36
398 Nikolic, Stanimir234368 40.60
399 Rantanen, Yrjo A234258 25.36
400 Levy, David Neil Lawrence234259
401 Baumbach, Friedrich234267 39.97
402 Pesantes Carbajal, Carlos234162
403 Kunsztowicz, Uwe234172 31.62
404 Petran, Pal233961 28.95
405 Speelman, Jonathan S233963 18.91
406 Camara, Helder233967 38.57
407 Grabczewski, Romuald233958 43.57
408 Lombard, Andre233955 24.94
409 Liljedahl, Lennart233861 28.01
410 Paehtz, Thomas Sr233859 18.98
411 Szilágyi, György233864 54.16
412 Quinones, Oscar Carillo233770
413 Poulsson, Eivind233776 32.74
414 Holm, Sejer233759 36.06
415 Yepez Obando, Olavo233671
416 Ostermeyer, Peter233561 31.88
417 Vogel, Jaap233564 27.42
418 Whiteley, Andrew J233565 28.23
419 Pinal, Nelson Borges233571
420 Urzica, Aurel233564 22.80
421 Dieks, Roy G233558 19.58
422 Neukirch, Detlef233373 35.06
423 Soler, Alberto233369
424 Schaufelberger, Heinz233269 27.78
425 Bouaziz, Slim233274 25.37
426 Horvath, Tamas233265 23.85
427 Kaufman, Larry C233172 27.79
428 Starck, Bodo233064 40.88
429 Pietrusiak, Bogdan233068 42.13
430 Barreras, Alberto233072 24.40
431 Borngaesser, Rene233062 23.94
432 Kristiansen, Erling232957 38.71
433 Janetschek, Karl232974 35.37
434 Ludgate, Alan232874 29.99
435 Kluger, Guyla232871 61.63
436 Poch, Cesar Guillermo232671
437 Naranja, Renato232660 34.93
438 Bönsch, Uwe232559 16.87
439 Tan Lian Ann232472
440 Cooper, John Grantley232374
441 Cardoso, Radolfo Tan232354
442 Silva, Fernando232369 25.07
443 Knox, Victor W232267 30.61
444 Alexandria, Nana232264 25.88
445 Georgiev, Krum232073 17.27
446 Grigorov, Jordan N232073 21.73
447 Van Baarle, C John232067 30.37
448 Barnes, Craig N231873
449 De Greif, Boris231661 45.55
450 Meduna, Eduard231573 24.97
451 Estevez Morales, Guillermo231553
452 Moehring, Guenther231455 38.77
453 Menvielle Lacourrelle, Augusto231466 37.05
454 Beyen, Roland231369 43.40
455 Osterman, Rudolf231261 29.11
456 Garcia, H.231269
457 Cibulka, Vladimir231270 33.83
458 Bachtiar, Arovah231067 41.43
459 Diaz, Joaquin C231060 27.15
460 Schinzel, Wladyslaw231059 32.28
461 Todorcevic, Miodrag231073 34.81
462 Franzen, Jozef230968 29.57
463 Van Geet, Dirk Daniel230973 43.50
464 Beil, Zdenek230870 22.03
465 Gulbrandsen, Arne Vinje230768
466 Helmertz, Per Inge230670
467 Cafferty, Bernard230560 41.18
468 Hoen, Ragnar230563 34.90
469 Casas, Fernando230569 49.03
470 Debarnot, Roberto230255 28.07
471 Allan, Denis230072 30.78
472 Kolbak, Jens229973 30.58
473 Ardiansyah, Haji229964 23.74
474 Hutchings, Stuart J229867
475 Hausner, Ivan229773 23.38
476 Wibe, Terje229763 27.90
477 Gross, Stefan229676 26.01
478 Norby, Peter H229570 35.18
479 Medina García, Antonio A229457 55.91
480 Timman, Ton229464 27.16
481 Vinje Gulbrandsen, Arne229467
482 Bengtsson, Bo229374 28.01
483 Kristinsson, Jon229368 33.21
484 Lebredo, Gerardo229258 25.08
485 Thal, Olaf229165 39.71
486 Perecz, Laszlo229064 31.19
487 Antonov, Vladimir228969 25.81
488 Gereben, Ernö228865 68.20
489 Novak, Ivan228860 32.60
490 Wagman, Stuart228875 56.30
491 Segal, Alexandru Sorin228670 27.90
492 Brondum, Eric228675 33.71
493 Ujtelky, Maximilián228565 60.36
494 Marszalek, Rafal228574 34.75
495 Orev, Petar228571 41.23
496 Schussler, Harry228376 18.19
497 Dietze, Wolfgang228263 25.20
498 Van Seters, Frits228271
499 Clemens, Christian228269 35.07
500 Gutman, Lev228170 29.92

These ratings, calculated as of August 31, 1975, incorporate all games (against rated opponents) played in the time between September 1, 1974 and August 31, 1975, along with the ratings that were already calculated as of August 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 August 31, 1975. This represents the player's estimated strength on September 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 September 1, 1975. The +/- value represents the standard deviation of that estimate; the player's true strength on September 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 September 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 August 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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