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Top 10 active players as of October 31, 1974

  #  

Player Rating +/-
1 Fischer, Robert J288861
2 Karpov, Anatoly E276549
3 Korchnoi, Viktor L272849
4 Petrosian, Tigran V270249
5 Spassky, Boris V268950
6 Polugaevsky, Lev A268949
7 Hübner, Robert268654
8 Tal, Mikhail268148
9 Larsen, Bent266650
10 Portisch, Lajos265949

About these ratings

Top 500 active players as of October 31, 1974

  #  

Player Rating +/- Best? 75%? Age
1 Fischer, Robert J28886191.7% #131.64
2 Karpov, Anatoly E2765494.9% #523.44
3 Korchnoi, Viktor L2728491.3% #943.61
4 Petrosian, Tigran V2702490.4% #1545.37
5 Spassky, Boris V2689500.3% #1937.75
6 Polugaevsky, Lev A2689490.2% #1939.94
7 Hübner, Robert2686540.3% #2125.98
8 Tal, Mikhail2681480.1% #2137.97
9 Larsen, Bent2666500.1% #2739.66
10 Portisch, Lajos265949 #3037.57
11 Smyslov, Vassily V265750 #3153.60
12 Geller, Efim P2656510.1% #3249.66
13 Byrne, Robert E2648540.1% #3746.53
14 Vaganian, Rafael A264452 #3823.04
15 Dvoretsky, Mark I264354 #4026.89
16 Vasiukov, Evgeny A264250 #3941.65
17 Tukmakov, Vladimir B263851 #4128.63
18 Romanishin, Oleg M263654 #4422.81
19 Ljubojevic, Ljubomir263649 #4123.99
20 Furman, Semen A263557 #4653.91
21 Tseshkovsky, Vitaly V263154 #4630.10
22 Mecking, Henrique263055 #4822.77
23 Lein, Anatoly262559 #5243.59
24 Krogius, Nikolay V2625640.1% #5544.27
25 Keres, Paul262454 #5058.81
26 Kuzmin, Gennady P262351 #5028.78
27 Smejkal, Jan261851 #5328.61
28 Hort, Vlastimil261748 #5330.80
29 Andersson, Ulf261348 #5523.34
30 Grefe, John A261158 #6127.15
31 Balashov, Yury S260551 #6225.63
32 Gligoric, Svetozar260349 #6251.74
33 Gulko, Boris F260355 #6527.73
34 Gheorghiu, Florin260349 #6330.57
35 Gufeld, Eduard E260053 #6638.62
36 Gipslis, Aivars259859 #7137.73
37 Averbakh, Yury L259867 #7552.73
38 Browne, Walter S259550 #6825.81
39 Kavalek, Lubomir259149 #7131.23
40 Savon, Vladimir A259150 #7234.10
41 Schmid, Lothar M259159 #7646.47
42 Panno, Oscar R258953 #7539.62
43 Szabó, László258950 #7457.62
44 Beliavsky, Alexander G258952 #7520.87
45 Kholmov, Ratmir D258253 #8049.47
46 Dzindzichashvili, Roman Y258162 #8730.49
47 Ivkov, Borislav257949 #8040.96
48 Olafsson, Fridrik257953 #8339.76
49 Suetin, Alexey S257853 #8347.95
50 Klovans, Janis257660 #8939.56
51 Liberzon, Vladimir M257355 #8837.61
52 Unzicker, Wolfgang256956 #9249.35
53 Pachmann, Ludek256869 #10150.47
54 Alburt, Lev O256757 #9629.19
55 Sanguinetti, Raúl C256259 #10041.74
56 Darga, Klaus V256265 #10540.69
57 Uhlmann, Wolfgang256150 #9639.59
58 Pfleger, Helmut256152 #9831.23
59 Benko, Pal C256051 #9746.29
60 Bronstein, David I255952 #10050.70
61 Matulovic, Milan255851 #9939.39
62 Grigorian, Karen A255757 #10327.15
63 Reshevsky, Samuel H255754 #10362.92
64 Lutikov, Anatoly S255661 #10741.74
65 Ribli, Zoltán255549 #10123.15
66 Bagirov, Vladimir K255456 #10638.21
67 Taimanov, Mark E255352 #10448.73
68 Nei, Iivo255363 #11142.99
69 Karasev, Vladimir I255357 #10736.37
70 Najdorf, Miguel254753 #11064.54
71 Planinc, Albin254750 #10830.54
72 Evans, Larry M254559 #11642.61
73 Kurajica, Bojan254553 #11226.95
74 Csom, István254450 #11134.41
75 Kapengut, Albert Z254359 #11830.32
76 Matanovic, Aleksandar254154 #11644.44
77 Lombardy, William J254154 #11636.90
78 Platonov, Igor V253863 #12440.79
79 Timman, Jan H253648 #11722.87
80 Tarjan, James E253553 #12122.69
81 Parma, Bruno253551 #12032.83
82 Velimirovic, Dragoljub253452 #12132.47
83 Razuvaev, Yury S253156 #12629.06
84 Mukhin, Mikhail A253158 #12826.70
85 Commons, Kim S253156 #12723.27
86 Murey, Yakov252974 #13933.24
87 Adorján, András252749 #12524.58
88 Jansa, Vlastimil252749 #12631.92
89 Averkin, Orest N252660 #13330.68
90 Sax, Gyula252550 #12823.37
91 Radulov, Ivan252450 #12835.81
92 Hecht, Hans-Joachim252149 #13235.76
93 Shereshevsky, Mikhail I251865 #14324.53
94 Bilek, István251851 #13542.22
95 Donner, Johannes H251749 #13447.32
96 Kovacevic, Vladimir251666 #14532.60
97 Zaitsev, Igor A251671 #14836.43
98 Filip, Miroslav251557 #14046.01
99 Kupreichik, Viktor D251456 #14025.33
100 Palatnik, Semen A251463 #14524.60
101 Quinteros, Miguel A251349 26.84
102 Bukic, Enver251359 36.91
103 Torre, Eugenio251352 22.98
104 Zhidkov, Valery S251368 35.16
105 Kirov Ivanov, Nino251355 29.14
106 Malich, Burkhard G251152 37.92
107 Karner, Hillar250966 39.26
108 Díez del Corral, Jesús250760 41.57
109 Tseitlin, Mark D250763 31.11
110 Weinstein, Norman250659 24.07
111 Osnos, Viacheslav V250666 39.27
112 Sveshnikov, Evgeny E250560 24.72
113 Shamkovich, Leonid A250463 51.41
114 Keene, Raymond250450
115 Suttles, Duncan250252 28.85
116 Antoshin, Vladimir S250260 45.46
117 Rashkovsky, Nukhim N250156 28.54
118 Sosonko, Gennadi250052 31.45
119 Georgadze, Tamaz V250057 26.97
120 Bobotsov, Milko G250060 43.09
121 Panchenko, Alexander N249571 21.07
122 Tringov, Georgy P249453 37.65
123 Forintos, Gyözö V249351 39.25
124 Marovic, Dražen249154 36.80
125 Podgaets, Mikhail Y249057 27.27
126 O'Kelly de Galway, Albéric248966 63.45
127 Karaklajic, Nikola248865 48.69
128 Padevsky, Nikola B248655 41.42
129 Zilberstein, Valery I248560 31.55
130 Pribyl, Josef248151 27.05
131 Kraidman, Yair248056 41.99
132 Gerusel, Mathias248056 36.74
133 Hartston, William R247951 27.22
134 Popov, Luben247752 38.76
135 Schmidt, Wlodzimierz247650 31.56
136 Raicevic, Vladimir247656 25.49
137 Dueball, Juergen247656 29.59
138 Hamann, Svend247564 34.06
139 Ubilava, Elizbar E247565 24.18
140 Johannsson, Ingi Randver247469
141 Gurgenidze, Bukhuti I247462 40.96
142 Kuijpers, Franciscus Antonius247358
143 García Gonzáles, Guillermo247252 20.89
144 Torán Albero, Román247163 43.06
145 Mišta, Ladislav247164 30.99
146 Antunac, Goran247160 29.54
147 Timoshchenko, Gennady247061 25.51
148 Cvetkovic, Srdjan247066 28.67
149 Ree, Hans246949 30.13
150 Minic, Dragoljub246954 37.65
151 Barcza, Gedeon246863 63.19
152 Espig, Lutz246854 25.82
153 Maric, Rudolf246672 47.47
154 Sigurjónsson, Gudmundur246455 27.10
155 Tatai, Stefano246450 36.61
156 Saidy, Anthony F246353 37.46
157 Knezevic, Milorad246356 37.99
158 Knaak, Rainer F246350 21.62
159 Robatsch, Karl246256 46.05
160 Ghizdavu, Dumitru246256 25.44
161 Schweber, Samuel246258 38.29
162 Soltis, Andrew E246258 27.42
163 Ciocaltea, Victor246250 42.79
164 Lukin, Andrei M246167 26.17
165 Kuindzhi, Alexander246167
166 Pilnik, Herman246161 60.81
167 Byrne, Donald246168 44.38
168 Lengyel, Laszlo246069 30.31
169 Moe, Mogens245962 30.63
170 Ornstein, Axel245855 22.52
171 Mohrlok, Dieter245662
172 Barczay, Laszlo245557 38.69
173 Pomar Salamanca, Arturo245550 43.16
174 Suba, Mihai245563 27.41
175 Fedorov, Vladislav245473 21.28
176 Estrin, Yacov B245360 51.53
177 Botterill, George Steven245263
178 Dueckstein, Andreas245170 47.24
179 Lerner, Konstantin Z245070 24.67
180 Stanciu, Traian245075 39.13
181 Zuidema, Coenraad245059
182 Zuckerman, Bernard244956 31.58
183 Doroshkievich, Vladimir K244974 36.84
184 Stean, Michael F244854 21.16
185 Rogoff, Kenneth S244857 21.61
186 Kaplan, Julio P244853 24.27
187 Rukavina, Josip244754 31.92
188 Capelan, Guenter244660 42.26
189 Ghitescu, Theodor244653 40.77
190 Mednis, Edmar J244653 37.61
191 Bertok, Mario244675 45.16
192 Westerinen, Heikki MJ244550 30.51
193 Zhuravliov, Valerij244560 35.88
194 Makarichev, Sergey Y244460 20.95
195 Damjanovic, Mato244452 47.61
196 Honfi, Karoly244453 44.02
197 Rytov, Boris244470
198 Hase, Juan Carlos244261
199 Cosulich, Roberto244257
200 Brinck Claussen, Bjorn244275
201 Calvo Minguez, Ricardo244056 31.02
202 Sofrevski, Jovan244066 39.20
203 Anikaev, Yury244057 26.34
204 Cortlever, Nicolaas244073 59.38
205 McKay, Roderick M244064 22.72
206 Enklaar, Bertus F243950
207 Miles, Anthony J243957 19.52
208 Kestler, Hans-Günter243760 34.88
209 Hennings, Artur243655 34.30
210 Spiridonov, Nikola243663 36.67
211 Lengyel, Levente243652 41.38
212 Bogdanovic, Rajko243571 42.95
213 Rodriguez, Amador243566 18.15
214 Kuprejanov, George243574
215 Vukic, Milan243460 31.20
216 Janoševic, Dragoljub243353 51.31
217 Faragó, Iván243253 28.58
218 Bisguier, Arthur B243254 45.06
219 Johannessen, Svein243060 37.04
220 Krnic, Zdenko242963 27.08
221 Castro Rojas, Oscar Humberto242964 21.48
222 Christoph, Manfred242971 43.42
223 Ermenkov, Evgenij242959 25.09
224 Rossetto, Héctor D242755 52.15
225 Rodriguez Vargas, Orestes242758 31.32
226 Cherepkov, Alexander V242772 54.00
227 Biyiasas, Peter242658 23.94
228 Jansson, Borje242659 32.63
229 Messing, Hrvoje242569 34.26
230 Kozma, Julius242473 45.41
231 Plachetka, Jan242453 29.70
232 Yanofsky, Daniel A242462 49.60
233 Dely, Peter242355 40.32
234 Gilden, Lawrence C242363
235 Szmetan, Jorge242256 24.43
236 Gaprindashvili, Nona242265 33.49
237 Peretz, Malkiel242269 31.39
238 Kozlov, Vladimir N242275 24.42
239 Haag, Ervin242172 41.80
240 Sanguinetti, Renato242171 58.52
241 Ostojic, Predrag242154 36.69
242 Garcia, Raimundo242056 38.43
243 Mariotti, Sergio241956 28.22
244 Balinas, Rosendo Carrean241970
245 Liebert, Heinz241851 38.44
246 Suess, Alois241869 31.39
247 Williams, Arthur Howard241756
248 Minev, Nikolay N241658 43.81
249 Jiménez Zerquera, Eleazar241660 46.35
250 Jakobsen, Ole241460 32.03
251 Corden, Martyn J241469
252 Boey, Josef241162 40.46
253 Chellstorp, Craig V241063
254 Martz, William E240955
255 Pritchett, Craig William240959
256 Mestrovic, Zvonimir240864 30.04
257 Sinclair, Ian240872
258 Rubinetti, Jorge A240754 29.58
259 Bednarski, Jacek B240753 35.63
260 Scholl, Eddie C240758 30.04
261 Soos, Bela240672 44.65
262 Prameshuber, Aleksander240673
263 Peev, Peicho Chonev240657 34.58
264 Kaldor, Avraham240569 27.45
265 Pytel, Krzysztof240550 29.46
266 Fuller, Maxwell L240468 29.76
267 Langeweg, Kick240350 37.65
268 Vadasz, Laszlo240354 26.76
269 Ungureanu, Emil240366 37.99
270 Haygarth, Michael J240372
271 Hug, Werner240352 22.14
272 Garcia, Wilfredo240268 19.93
273 Czerniak, Moshe240261 64.74
274 Cuasnicu, Oscar240267 32.02
275 Clarke, Peter H240074
276 Garcia Martinez, Silvino239950 30.32
277 Kolarov, Atanas S239974 40.66
278 Ek, Hans239862 46.07
279 Cobo Arteaga, Eldis239757
280 Eising, Johannes239754 39.42
281 Lehmann, Heinz Dr239656
282 Kovacs, Laszlo M239663 36.07
283 Simic, Radoslav239671 26.39
284 Augustin, Josef239667 32.45
285 Portisch, Ferenc239471 35.56
286 Kristiansen, Erling239463 37.87
287 Partos, Charles239465 38.22
288 Andersen, Borge239466 40.62
289 Řgaard, Leif239456 22.82
290 Vogt, Lothar H239351 22.79
291 Bohosjan, Sarkis239363 33.59
292 Bukal, Vladimir Sr239269 34.99
293 Porat, Yosef239272 65.40
294 Lechtynsky, Jiri239255 26.93
295 Piasetski, Leon David239174
296 Jankovec, Ivan239063 36.04
297 Hazai, Laszlo239061 21.38
298 Cuéllar Gacharná, Miguel239064 57.95
299 Sapi, Laszlo239065 39.61
300 Tompa, Janos238961 27.50
301 Myagmarsuren, Lhamsuren238964 36.70
302 Grinberg, Ricardo238970 26.80
303 Deze, Anton238859
304 Korensky, Valeri S238771
305 Macles, Jacques238764 29.31
306 Belkadi, Ridha238670 49.52
307 Uddenfeldt, Dan238667 23.59
308 Doda, Zbigniew238552 43.69
309 Kinnmark, Ove238561 29.85
310 Basman, Michael J238459 28.62
311 Penrose, Jonathan238359 41.06
312 Nicevski, Risto238354 29.34
313 Zwaig, Arne238263
314 Sydor, Andrzej238158 37.83
315 Kupka, Slavoj238162 32.31
316 Foguelman, Alberto238073 51.05
317 Filipowicz, Andrzej238052 36.47
318 Karklins, Andrew238058 27.55
319 Seret, Jean Luc238068
320 Cuartas, Carlos237962 34.21
321 Friedman, Shmuel237971
322 Ujtumen, Tudev237965 35.18
323 Bohm, Hans237859 24.79
324 Nunn, John D M237867 19.52
325 Mestel, A Jonathan237761 17.63
326 Vujacic, Borivoje237676 25.13
327 Rajkovic, Dusan237660 32.37
328 Visier Segovia, Fernando237558 31.74
329 Stoica, Valentin237565 24.71
330 Adamski, Jan237551 30.96
331 Bellin, Robert237559 22.34
332 Ingerslev, Age237573 41.06
333 Eley, Brian237461
334 Hartoch, Robert G237451
335 van Scheltinga, Tjeerd D237257 60.65
336 Kostro, Jerzy237254 37.77
337 Onat, Ilhan237274 44.90
338 Markland, Peter R237155 23.55
339 Toth, Bela237155 31.53
340 Ivanovic, Božidar237072 28.19
341 Van Riemsdijk, Herman C237064 26.18
342 Bordonada, Glenn236971
343 Shashin, Alexsander A236975
344 Blatny, Frantisek236865 41.58
345 Rath, Ulrik236869 27.84
346 Masic, Ljubomir236858 38.32
347 Estevez Morales, Guillermo236754
348 Saren, Ilkka J236673 34.46
349 Schoeneberg, Manfred236565 28.32
350 Paehtz, Thomas Sr236558 18.16
351 Zichichi, Alvise236361 36.32
352 Lundin, Erik236368 70.33
353 Pavlov, Mircea236361 37.13
354 Puc, Stojan236369 53.56
355 Spassov, Liuben236357 31.61
356 Neckar, Lubomir236264 24.24
357 Campos Lopez, Mario236259 31.46
358 Mueller, Klaus Uwe236156
359 Rantanen, Yrjo A236161 24.52
360 Rajna, George236166 27.71
361 Prandstetter, Eduard236066 25.87
362 Polgar, Istvan236068 29.92
363 Olsson, Ake236076 40.49
364 Braun, Gottfried235964 41.34
365 Lanc, Alois235864 26.70
366 Grabczewski, Romuald235857 42.73
367 Roehrl, Karl235773 33.80
368 Bellon Lopez, Juan Manuel235752 24.48
369 Balcerowski, Witold235774 39.22
370 Kagan, Shimon235661 32.57
371 Zilberman, Nathan R235673 34.49
372 Wade, Robert Graham235457
373 Gesos, Pavlos235465 29.43
374 Donoso Velasco, Pedro H235374 30.68
375 Zinn, Lothar235357 36.62
376 Rodriguez Gonzales, Jesus235364
377 Holm, Sejer235163 35.22
378 Szymczak, Zbigniew235159 22.82
379 Nikolic, Stanimir235065 39.76
380 Garcia, Horacio235065
381 Pelikán, Jorge234962 68.52
382 Brond, Victor234966
383 Sznapik, Aleksander234953 23.72
384 Levy, David Neil Lawrence234757
385 Perkins, Alan H234771 25.62
386 Ekenberg, Bengt234674
387 Denker, Arnold S234672 60.69
388 Hurme, Harri M234668 29.41
389 Webb, Simon234665 25.39
390 Fichtl, Jirí234656 53.71
391 Baumbach, Friedrich234568 39.15
392 Hohler, Peter234472 33.55
393 Nordstrom, Felix234470 30.40
394 Barle, Janez234369 22.61
395 Pinal, Nelson Borges234263
396 Moehring, Guenther234256 37.93
397 Mihaljcisin, Mihajlo234174 41.69
398 De Greif, Boris234163 44.72
399 Kunsztowicz, Uwe234163 30.79
400 Banas, Jan234054 27.41
401 Gasic, Bozidar234068 37.05
402 Emma, Jaime J234060 36.79
403 Formanek, Edward W233868 32.48
404 Whiteley, Andrew J233863 27.39
405 Liljedahl, Lennart233859 27.18
406 Quinones, Oscar Carillo233764
407 Jacobsen, Bo233772 25.88
408 Akvist, Hakan233760 33.01
409 Cafferty, Bernard233564 40.34
410 Poutiainen, Pertti233462
411 Camara, Helder233360 37.73
412 Kaufman, Larry C233264 26.95
413 Fridh, Anton233270 54.86
414 Vogel, Jaap233261 26.58
415 Kushnir, Alla233168
416 Wahlbom, Magnus233171 29.46
417 Nagy, Ervin233167 29.25
418 Debarnot, Roberto233155 27.24
419 Schaufelberger, Heinz233063 26.94
420 Barreras, Alberto233064 23.57
421 Tan Lian Ann233068
422 Bönsch, Uwe233058 16.04
423 Hindle, Owen M232974 34.63
424 Vilela, Jose Luis232868 21.62
425 Knox, Victor W232870 29.77
426 Pintér, József232766 20.97
427 Boudy, Julio232765 23.39
428 Romm, Meir232672 35.36
429 Van Geet, Dirk Daniel232674 42.66
430 Horvath, Tamas232566 23.02
431 Palermo, Vicente232573 42.63
432 De la Vega, Hector232569 48.62
433 Kluger, Guyla232563 60.79
434 Pietrusiak, Bogdan232561 41.30
435 Bouaziz, Slim232566 24.54
436 Cooper, John Grantley232366
437 Navarovszky, Laszlo232368 41.58
438 Naranja, Renato232255 34.10
439 Todorcevic, Miodrag232266 33.97
440 Maciejewski, Andrzej232259 23.31
441 Domnitz, Zadok232071 41.04
442 Poch, Cesar Guillermo232063
443 Szilágyi, György232061 53.32
444 Ghinda, Mihail Viorel231876 25.27
445 Beil, Zdenek231868 21.20
446 Silva, Fernando231862 24.24
447 Meduna, Eduard231764 24.14
448 Janetschek, Karl231768 34.54
449 Thorbergsson, Freysteinn231674
450 Helmertz, Per Inge231473
451 Hansson, Dan231469 22.39
452 Neukirch, Detlef231464 34.23
453 Inkiov, Ventzislav231471 18.45
454 Kolbak, Jens231473 29.74
455 Wirthensohn, Heinz231465 23.49
456 Friedgood, David231371 28.30
457 Ligterink, Gert231361 24.95
458 Iskov, Gert231261 26.26
459 Van Baarle, C John231268 29.53
460 Lombard, Andre231254 24.12
461 Carvalho, Herbert Abreu231173 20.09
462 Blackstock, Lesly SF231174
463 Matera, Salvatore Joseph231067
464 Menvielle Lacourrelle, Augusto230959 36.22
465 Cardoso, Radolfo Tan230953
466 Yepez Obando, Olavo230974
467 Ludgate, Alan230975 29.17
468 Reicher, Emanoil230873 44.59
469 Starck, Bodo230866 40.05
470 Hoen, Ragnar230761 34.07
471 Casas, Fernando230768 48.19
472 Cibulka, Vladimir230662 32.99
473 Boersma, Paulus A230573 26.29
474 Horner, Jeff230574 25.18
475 Beyen, Roland230466 42.57
476 Wotulo, Max230371 42.24
477 Dieks, Roy G230364 18.75
478 Skalkotas, Nikolaos230370 25.11
479 Hutchings, Stuart J230361
480 Ljungqvist, Lennart230368
481 Lebredo, Gerardo230260 24.24
482 Franzen, Jozef230063 28.73
483 Van den Berg, AMJ.230075
484 Lukacs, Peter229962 24.31
485 Jamieson, Peter Michael229768
486 Gasztonyi, Endre229774
487 Tuzovsky, Alexander I229669
488 Bennett, Gerald H229671
489 Bachtiar, Arovah229663 40.60
490 Medina García, Antonio A229453 55.08
491 Gross, Stefan229466 25.17
492 Sarapu, Ortvin229373 50.78
493 Ardiansyah, Haji229259 22.90
494 Leskovar, Mario229169 24.05
495 Wagman, Stuart229166 55.46
496 Juarez, Carlos Eleodoro229168 36.34
497 Franklin, Michael J229168 43.74
498 Venalainen, Unto E229168 30.67
499 Bronstein, Luis229064 28.41
500 Thorvaldsson, Jonas228973

These ratings, calculated as of October 31, 1974, incorporate all games (against rated opponents) played in the time between November 1, 1973 and October 31, 1974, along with the ratings that were already calculated as of October 31, 1973. 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, 1974. This represents the player's estimated strength on November 1, 1974.

+/- 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, 1974. The +/- value represents the standard deviation of that estimate; the player's true strength on November 1, 1974 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, 1974. 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, 1974. 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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