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Top 10 active players as of April 30, 1974

  #  

Player Rating +/-
1 Fischer, Robert J289458
2 Karpov, Anatoly E275950
3 Korchnoi, Viktor L273450
4 Spassky, Boris V270549
5 Petrosian, Tigran V270149
6 Polugaevsky, Lev A269648
7 Hübner, Robert269453
8 Tal, Mikhail268348
9 Portisch, Lajos266750
10 Larsen, Bent266550

About these ratings

Top 500 active players as of April 30, 1974

  #  

Player Rating +/- Best? 75%? Age
1 Fischer, Robert J28945893.8% #131.14
2 Karpov, Anatoly E2759503.2% #522.93
3 Korchnoi, Viktor L2734501.2% #943.10
4 Spassky, Boris V2705490.4% #1537.25
5 Petrosian, Tigran V2701490.3% #1644.86
6 Polugaevsky, Lev A2696480.2% #1739.44
7 Hübner, Robert2694530.3% #1925.48
8 Tal, Mikhail2683480.1% #2237.47
9 Portisch, Lajos2667500.1% #2837.07
10 Larsen, Bent2665500.1% #3039.15
11 Vasiukov, Evgeny A266050 #3241.15
12 Smyslov, Vassily V265350 #3553.10
13 Vaganian, Rafael A264952 #3822.54
14 Geller, Efim P264450 #3949.16
15 Tukmakov, Vladimir B264250 #4128.12
16 Ljubojevic, Ljubomir264149 #4123.49
17 Byrne, Robert E263455 #4846.03
18 Mecking, Henrique263355 #4922.27
19 Romanishin, Oleg M263355 #4822.30
20 Furman, Semen A263258 #5053.41
21 Tseshkovsky, Vitaly V263054 #4929.60
22 Keres, Paul263052 #4958.31
23 Dvoretsky, Mark I263054 #5026.39
24 Krogius, Nikolay V262962 #5443.77
25 Kuzmin, Gennady P262551 #5228.28
26 Lein, Anatoly262358 #5643.09
27 Hort, Vlastimil262248 #5230.30
28 Smejkal, Jan262150 #5428.11
29 Grefe, John A261658 #6126.65
30 Gligoric, Svetozar261449 #5851.24
31 Gulko, Boris F261356 #6127.22
32 Gufeld, Eduard E261353 #6038.11
33 Browne, Walter S261150 #6125.30
34 Kavalek, Lubomir260949 #6230.72
35 Savon, Vladimir A260750 #6333.59
36 Gheorghiu, Florin260750 #6330.07
37 Gipslis, Aivars260559 #6937.23
38 Balashov, Yury S260450 #6525.13
39 Schmid, Lothar M260364 #7345.97
40 Andersson, Ulf260248 #6622.84
41 Olafsson, Fridrik259556 #7539.26
42 Averbakh, Yury L259466 #8252.23
43 Panno, Oscar R259253 #7639.12
44 Szabó, László259050 #7657.11
45 Liberzon, Vladimir M258756 #8137.10
46 Kholmov, Ratmir D258653 #8048.96
47 Ivkov, Borislav258549 #7940.47
48 Unzicker, Wolfgang258258 #8648.84
49 Suetin, Alexey S258155 #8547.46
50 Klovans, Janis258161 #8939.06
51 Sanguinetti, Raúl C257967 #9441.24
52 Dzindzichashvili, Roman Y257961 #9029.98
53 Beliavsky, Alexander G257552 #8820.37
54 Reshevsky, Samuel H257154 #9362.43
55 Bagirov, Vladimir K256656 #9937.71
56 Najdorf, Miguel256555 #9964.04
57 Matulovic, Milan256551 #9638.88
58 Bronstein, David I256552 #9750.20
59 Pachmann, Ludek256468 #10749.96
60 Alburt, Lev O256458 #10128.69
61 Pfleger, Helmut256352 #9930.73
62 Grigorian, Karen A256355 #10126.65
63 Benko, Pal C256251 #9945.79
64 Uhlmann, Wolfgang256149 #9939.09
65 Lutikov, Anatoly S255957 #10541.23
66 Darga, Klaus V255862 #11040.18
67 Karasev, Vladimir I255761 #11035.86
68 Ribli, Zoltán255649 #10222.65
69 Evans, Larry M255558 #10942.11
70 Taimanov, Mark E255451 #10548.23
71 Nei, Iivo255263 #11442.50
72 Kapengut, Albert Z254859 #11629.82
73 García Gonzáles, Guillermo254854 #11220.39
74 Kupreichik, Viktor D254857 #11524.82
75 Kurajica, Bojan254853 #11226.46
76 Velimirovic, Dragoljub254652 #11331.96
77 Csom, István254650 #11333.90
78 Averkin, Orest N254558 #11830.18
79 Matanovic, Aleksandar254353 #11743.93
80 Shereshevsky, Mikhail I254170 #12824.03
81 Planinc, Albin254050 #11730.03
82 Timman, Jan H254048 #11722.38
83 Platonov, Igor V253862 #12640.28
84 Murey, Yakov253774 #13432.74
85 Razuvaev, Yury S253655 #12428.55
86 Commons, Kim S253456 #12622.77
87 Parma, Bruno253451 #12432.33
88 Jansa, Vlastimil253449 #12231.43
89 Mukhin, Mikhail A253359 #12926.20
90 Sax, Gyula253051 #12722.86
91 Filip, Miroslav252958 #13245.51
92 Adorján, András252849 #12824.08
93 Zaitsev, Igor A252669 #14035.92
94 Lombardy, William J252655 #13336.40
95 Hecht, Hans-Joachim252550 #13035.25
96 Palatnik, Semen A252163 #14124.09
97 Malich, Burkhard G251851 #13737.42
98 Tarjan, James E251754 #13922.19
99 Zhidkov, Valery S251768 #14734.65
100 Díez del Corral, Jesús251658 #14341.07
101 Bilek, István251651 41.72
102 Radulov, Ivan251650 35.31
103 Karner, Hillar251565 38.76
104 Bukic, Enver251559 36.41
105 Kovacevic, Vladimir251467 32.09
106 Donner, Johannes H251349 46.82
107 Quinteros, Miguel A251249 26.34
108 Osnos, Viacheslav V251166 38.77
109 Nikolaevsky, Yuri V250973
110 Shamkovich, Leonid A250961 50.91
111 Suttles, Duncan250953 28.36
112 Weinstein, Norman250859 23.57
113 Podgaets, Mikhail Y250758 26.77
114 Tseitlin, Mark D250762 30.60
115 Forintos, Gyözö V250651 38.75
116 Georgadze, Tamaz V250557 26.47
117 Bobotsov, Milko G250357 42.58
118 Keene, Raymond250350
119 Antoshin, Vladimir S250360 44.95
120 Rashkovsky, Nukhim N250155 28.03
121 Schmidt, Wlodzimierz250050 31.05
122 Sveshnikov, Evgeny E250057 24.22
123 Ubilava, Elizbar E249665 23.68
124 Marovic, Dražen249654 36.29
125 Sosonko, Gennadi249452 30.94
126 Karaklajic, Nikola249265 48.18
127 O'Kelly de Galway, Albéric249265 62.95
128 Gurgenidze, Bukhuti I249062 40.46
129 Panchenko, Alexander N248971 20.57
130 Hartston, William R248452 26.72
131 Padevsky, Nikola B248357 40.91
132 Sigurjónsson, Gudmundur248256 26.60
133 Hamann, Svend248259 33.56
134 Cvetkovic, Srdjan248266 28.17
135 Gerusel, Mathias248155 36.23
136 Mohrlok, Dieter248062
137 Torre, Eugenio247952 22.49
138 Tringov, Georgy P247953 37.15
139 Raicevic, Vladimir247856 24.99
140 Dueball, Juergen247857 29.09
141 Suba, Mihai247763 26.91
142 Antunac, Goran247560 29.04
143 Espig, Lutz247553 25.32
144 Zilberstein, Valery I247561 31.05
145 Pribyl, Josef247351 26.55
146 Minic, Dragoljub247354 37.15
147 Maric, Rudolf247272 46.96
148 Mišta, Ladislav247263 30.50
149 Soltis, Andrew E247158 26.92
150 Ree, Hans247049 29.62
151 Ghizdavu, Dumitru246958 24.94
152 Ciocaltea, Victor246850 42.29
153 Kraidman, Yair246856 41.50
154 Rogoff, Kenneth S246863 21.11
155 Barcza, Gedeon246863 62.69
156 Byrne, Donald246868 43.88
157 Barczay, Laszlo246863 38.19
158 Schweber, Samuel246758 37.79
159 Knezevic, Milorad246556 37.50
160 Enklaar, Bertus F246351
161 Pilnik, Herman246361 60.31
162 Pomar Salamanca, Arturo246350 42.66
163 Yanofsky, Daniel A246266 49.09
164 Lengyel, Laszlo246269 29.80
165 Saidy, Anthony F246153 36.95
166 Fedorov, Vladislav245973 20.78
167 Calvo Minguez, Ricardo245858 30.52
168 Zhuravliov, Valerij245760 35.39
169 Popov, Luben245652 38.26
170 Kaplan, Julio P245653 23.76
171 Kuijpers, Franciscus Antonius245660
172 Lerner, Konstantin Z245670 24.17
173 Knaak, Rainer F245550 21.12
174 Moe, Mogens245473 30.13
175 Ornstein, Axel245356 22.02
176 Biyiasas, Peter245359 23.45
177 Doroshkievich, Vladimir K245270 36.34
178 Stanciu, Traian245275 38.63
179 Cosulich, Roberto245158
180 Williams, Arthur Howard245059
181 Makarichev, Sergey Y244960 20.45
182 Zuidema, Coenraad244957
183 Timoshchenko, Gennady244861 25.01
184 Vukic, Milan244859 30.70
185 Rukavina, Josip244854 31.42
186 McKay, Roderick M244867 22.22
187 Estrin, Yacov B244859 51.03
188 Bertok, Mario244875 44.66
189 Tatai, Stefano244850 36.10
190 Jansson, Borje244858 32.13
191 Bogdanovic, Rajko244771 42.46
192 Mednis, Edmar J244753 37.11
193 Rytov, Boris244770
194 Westerinen, Heikki MJ244750 30.01
195 Damjanovic, Mato244651 47.10
196 Spiridonov, Nikola244661 36.17
197 Vranesic, Zvonko244672 35.57
198 Ghitescu, Theodor244653 40.27
199 Sofrevski, Jovan244665 38.70
200 Robatsch, Karl244659 45.54
201 Szmetan, Jorge244358 23.92
202 Anikaev, Yury244257 25.83
203 Kirov Ivanov, Nino244163 28.64
204 Mueller, Klaus Uwe244156
205 Torán Albero, Román244168 42.56
206 Hennings, Artur244054 33.80
207 Zuckerman, Bernard244056 31.08
208 Lengyel, Levente243652 40.87
209 Janoševic, Dragoljub243653 50.81
210 Capelan, Guenter243559 41.76
211 Messing, Hrvoje243569 33.76
212 Botterill, George Steven243563
213 Stean, Michael F243455 20.65
214 Kuindzhi, Alexander243467
215 Cortlever, Nicolaas243372 58.87
216 Faragó, Iván243356 28.08
217 Penrose, Jonathan243361 40.56
218 Hase, Juan Carlos243359
219 Cherepkov, Alexander V243172 53.50
220 Krnic, Zdenko243163 26.58
221 Dueckstein, Andreas243170 46.74
222 Bisguier, Arthur B243054 44.56
223 Kozlov, Vladimir N242875 23.91
224 Garcia, Raimundo242755 37.92
225 Honfi, Karoly242754 43.51
226 Rossolimo, Nicolas242673 64.17
227 Cuasnicu, Oscar242667 31.52
228 Gilden, Lawrence C242663
229 Suess, Alois242569 30.88
230 Rossetto, Héctor D242555 51.64
231 Sanguinetti, Renato242571 58.02
232 Rodriguez Vargas, Orestes242457 30.82
233 Gaprindashvili, Nona242464 32.98
234 Minev, Nikolay N242458 43.31
235 Dely, Peter242455 39.82
236 Kestler, Hans-Günter242464 34.38
237 Kozma, Julius242270 44.91
238 Vadasz, Laszlo242254 26.26
239 Miles, Anthony J242156 19.02
240 Hug, Werner242153 21.64
241 Ostojic, Predrag242054 36.19
242 Lukin, Andrei M242070 25.67
243 Nicevski, Risto241955 28.83
244 Haag, Ervin241967 41.30
245 Christoph, Manfred241969 42.92
246 Johannessen, Svein241762 36.54
247 Peretz, Malkiel241666 30.88
248 Liebert, Heinz241651 37.93
249 Ermenkov, Evgenij241656 24.59
250 Chellstorp, Craig V241563
251 Plachetka, Jan241454 29.20
252 Boey, Josef241364 39.95
253 Zwaig, Arne241373
254 Jiménez Zerquera, Eleazar241260 45.84
255 Řgaard, Leif241158 22.32
256 Pritchett, Craig William241162
257 Mestrovic, Zvonimir241164 29.54
258 Ungureanu, Emil241063 37.50
259 Scholl, Eddie C241057 29.54
260 Kolarov, Atanas S240973 40.16
261 Langeweg, Kick240850 37.15
262 Mariotti, Sergio240857 27.72
263 Haygarth, Michael J240770
264 Jakobsen, Ole240758 31.53
265 Ek, Hans240462 45.57
266 Basman, Michael J240360 28.12
267 Bednarski, Jacek B240352 35.13
268 Myagmarsuren, Lhamsuren240262 36.20
269 Corden, Martyn J240267
270 Garcia, Wilfredo240168 19.44
271 Rodriguez, Amador240168 17.64
272 Pytel, Krzysztof240150 28.95
273 Eising, Johannes240155 38.91
274 Siaperas, Triantafyllos240069 41.75
275 Lehmann, Heinz Dr240056
276 Cuéllar Gacharná, Miguel240062 57.45
277 Ujtumen, Tudev239964 34.68
278 Simic, Radoslav239971 25.88
279 Sapi, Laszlo239965 39.11
280 Stoica, Valentin239865 24.21
281 Vogt, Lothar H239851 22.29
282 Martz, William E239856
283 Augustin, Josef239867 31.94
284 Bohosjan, Sarkis239763 33.09
285 Portisch, Ferenc239670 35.06
286 Debarnot, Roberto239558 26.73
287 Cobo Arteaga, Eldis239556
288 Jankovec, Ivan239563 35.54
289 Hernandez, Roman239572 24.44
290 Peev, Peicho Chonev239457 34.08
291 Porat, Yosef239471 64.89
292 Rubinetti, Jorge A239455 29.08
293 Adamski, Jan239352 30.47
294 Clarke, Peter H239371
295 Kovacs, Laszlo M239262 35.57
296 Korensky, Valeri S239271
297 Neckar, Lubomir239265 23.74
298 Doda, Zbigniew239053 43.19
299 Andersen, Borge239075 40.11
300 Kinnmark, Ove239061 29.35
301 Grinberg, Ricardo239070 26.29
302 Kristiansen, Erling239061 37.37
303 Hazai, Laszlo238961 20.87
304 Cuartas, Carlos238967 33.71
305 Soos, Bela238873 44.15
306 Estevez Morales, Guillermo238755
307 Hartoch, Robert G238650
308 Ivanovic, Božidar238671 27.68
309 Kostro, Jerzy238553 37.26
310 Shashin, Alexsander A238375
311 Foguelman, Alberto238372 50.55
312 Pedersen, Eigil238273
313 Bukal, Vladimir Sr238268 34.50
314 Nunn, John D M238268 19.01
315 Karklins, Andrew238158 27.04
316 Rajkovic, Dusan238160 31.86
317 Kupka, Slavoj238163 31.81
318 Geller, Uzi238173 43.26
319 Friedman, Shmuel238171
320 Toth, Bela238056 31.03
321 Ilievski, Dimitar237975 32.68
322 Tompa, Janos237961 26.99
323 Bohm, Hans237859 24.29
324 Lechtynsky, Jiri237859 26.43
325 van Scheltinga, Tjeerd D237757 60.15
326 Filipowicz, Andrzej237753 35.96
327 Lundin, Erik237769 69.83
328 Czerniak, Moshe237664 64.24
329 Barle, Janez237669 22.11
330 Deze, Anton237659
331 Markland, Peter R237555 23.05
332 Olsson, Ake237468 39.98
333 Bellin, Robert237463 21.83
334 Vujacic, Borivoje237476 24.63
335 Paehtz, Thomas Sr237258 17.65
336 Blatny, Frantisek237265 41.08
337 Sydor, Andrzej237157 37.32
338 Masic, Ljubomir237158 37.82
339 Kagan, Shimon237060 32.07
340 Zichichi, Alvise236960 35.82
341 Mititelu, Gheorghe236976 39.50
342 Liljedahl, Lennart236859 26.68
343 Prandstetter, Eduard236766 25.37
344 Campos Lopez, Mario236760 30.95
345 Holm, Sejer236559 34.72
346 Uddenfeldt, Dan236472 23.09
347 Trapl, Jindrich236475 32.10
348 Wade, Robert Graham236357
349 Spassov, Liuben236359 31.11
350 Sloth, Jorn236271 29.65
351 Rajna, George236266 27.21
352 Balcerowski, Witold236171 38.72
353 Partos, Charles236169 37.72
354 Levy, David Neil Lawrence236059
355 Pinal, Nelson Borges236063
356 Belkadi, Ridha235975 49.01
357 Ekenberg, Bengt235971
358 Garcia Martinez, Silvino235951 29.82
359 Zinn, Lothar235955 36.11
360 Rodriguez Gonzales, Jesus235864
361 Pavlov, Mircea235864 36.63
362 Webb, Simon235866 24.88
363 Puc, Stojan235669 53.06
364 Nikolic, Stanimir235665 39.26
365 Donoso Velasco, Pedro H235674 30.18
366 Roehrl, Karl235674 33.30
367 Fichtl, Jirí235656 53.21
368 Sznapik, Aleksander235554 23.22
369 Kaldor, Avraham235567 26.94
370 Lekander, Rolf235569 27.33
371 Maciejewski, Andrzej235557 22.81
372 Bellon Lopez, Juan Manuel235553 23.97
373 Gasic, Bozidar235466 36.55
374 Garcia, Horacio235465
375 Van Riemsdijk, Herman C235465 25.68
376 Schoeneberg, Manfred235363 27.82
377 Gesos, Pavlos235265 28.92
378 Szymczak, Zbigniew235259 22.32
379 Wirthensohn, Heinz235265 22.98
380 Hohler, Peter235271 33.05
381 Brond, Victor235266
382 Moehring, Guenther235156 37.43
383 Pelikán, Jorge235162 68.02
384 Eley, Brian235060
385 Grabczewski, Romuald235055 42.23
386 Baumbach, Friedrich235068 38.64
387 Mihaljcisin, Mihajlo234974 41.19
388 Mestel, A Jonathan234861 17.13
389 Jongsma, Alexander234874 35.91
390 Emma, Jaime J234758 36.29
391 Braun, Gottfried234765 40.83
392 Whiteley, Andrew J234765 26.88
393 Denker, Arnold S234672 60.19
394 Banas, Jan234454 26.90
395 Jacobsen, Bo234372 25.38
396 Harandi, Khosro234371 23.66
397 Saren, Ilkka J234371 33.95
398 Lanc, Alois234164 26.20
399 Formanek, Edward W234168 31.98
400 Nagy, Ervin234067 28.75
401 Akvist, Hakan234058 32.51
402 Vogel, Jaap233961 26.08
403 Pustina, Ylvi233871
404 Polgar, Istvan233868 29.43
405 Quinones, Oscar Carillo233762
406 Bönsch, Uwe233758 15.54
407 Kaufman, Larry C233764 26.46
408 Barreras, Alberto233764 23.07
409 Cafferty, Bernard233663 39.84
410 Neukirch, Detlef233665 33.72
411 Nordstrom, Felix233668 29.90
412 Vilela, Jose Luis233568 21.11
413 Tan Lian Ann233465
414 Navarovszky, Laszlo233367 41.07
415 Kunsztowicz, Uwe233262 30.28
416 De la Vega, Hector233269 48.12
417 Pintér, József233166 20.47
418 Visier Segovia, Fernando233165 31.24
419 Van Geet, Dirk Daniel233171 42.16
420 Horner, Jeff233073 24.68
421 Palermo, Vicente233073 42.13
422 Thorbergsson, Freysteinn232973
423 Kluger, Guyla232863 60.29
424 Kushnir, Alla232868
425 Horvath, Tamas232666 22.52
426 Romm, Meir232672 34.85
427 Poch, Cesar Guillermo232563
428 Camara, Helder232463 37.23
429 Szilágyi, György232461 52.82
430 Knox, Victor W232375 29.27
431 Troianescu, Octav232373 58.23
432 Cardoso, Radolfo Tan232354
433 Van Baarle, C John232369 29.03
434 Fridh, Anton232269 54.36
435 Domnitz, Zadok232271 40.54
436 Reicher, Emanoil232272 44.09
437 Bachtiar, Arovah232061 40.10
438 Meduna, Eduard232064 23.64
439 Poutiainen, Pertti232075
440 Boudy, Julio231965 22.88
441 Carvalho, Herbert Abreu231973 19.58
442 Zilberman, Nathan R231874 33.98
443 Gereben, Ernö231866 66.86
444 Naranja, Renato231857 33.60
445 Pietrusiak, Bogdan231761 40.79
446 Onat, Ilhan231776 44.40
447 Ghinda, Mihail Viorel231776 24.76
448 Gross, Stefan231767 24.67
449 Ligterink, Gert231661 24.45
450 Menvielle Lacourrelle, Augusto231559 35.72
451 De Greif, Boris231564 44.21
452 Starck, Bodo231466 39.55
453 Kristinsson, Jon231363 31.86
454 Manasterski, Lutoslaw231269 37.22
455 Matera, Salvatore Joseph231267
456 Schaufelberger, Heinz231265 26.45
457 Hansson, Dan231168 21.88
458 Dieks, Roy G231164 18.25
459 Cibulka, Vladimir231062 32.50
460 Janetschek, Karl231075 34.04
461 Helmertz, Per Inge230773
462 Skalkotas, Nikolaos230572 24.61
463 Juarez, Carlos Eleodoro230569 35.83
464 Moles, John230374 24.61
465 Lombard, Andre230357 23.61
466 Pokojowczyk, Jerzy230266 25.19
467 Segal, Alexandru Sorin230263 26.57
468 Franzen, Jozef230163 28.23
469 Silva, Fernando230172 23.74
470 Eales, Richard G230072
471 Van den Berg, AMJ.230075
472 Medina García, Antonio A229952 54.58
473 Tuzovsky, Alexander I229969
474 Hoen, Ragnar229963 33.57
475 Bronstein, Luis229864 27.90
476 Ardiansyah, Haji229858 22.40
477 Ljungqvist, Lennart229867
478 Lukacs, Peter229862 23.81
479 Wotulo, Max229769 41.73
480 Van Seters, Frits229474
481 Wagman, Stuart229466 54.95
482 Casas, Fernando229469 47.69
483 Thorvaldsson, Jonas229473
484 Clemens, Christian229161 33.73
485 Boersma, Paulus A229174 25.79
486 Rodriguez Cordoba, Jesus R229076 24.87
487 Kristiansen, Jens228872 21.92
488 Sarapu, Ortvin228873 50.28
489 Ujtelky, Maximilián228858 59.03
490 Novak, Ivan228855 31.26
491 Leskovar, Mario228670 23.55
492 Gruenberg, Hans Ulrich228656 18.31
493 Wibe, Terje228460 26.57
494 Gasztonyi, Endre228474
495 Lebredo, Gerardo228460 23.74
496 Beil, Zdenek228471 20.70
497 Prochownik, Franciszek228066 39.45
498 Durao, Joaquim228069 43.51
499 Zoltek, Tadeusz228062 36.66
500 Belliard, Luis227874

These ratings, calculated as of April 30, 1974, incorporate all games (against rated opponents) played in the time between May 1, 1973 and April 30, 1974, along with the ratings that were already calculated as of April 30, 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 April 30, 1974. This represents the player's estimated strength on May 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 May 1, 1974. The +/- value represents the standard deviation of that estimate; the player's true strength on May 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 May 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 April 30, 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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