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Top 10 active players as of February 28, 1977


Top 500 active players as of February 28, 1977

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27754946.0% #425.76
2 Korchnoi, Viktor L27285012.0% #1145.93
3 Polugaevsky, Lev A2721509.4% #1342.27
4 Petrosian, Tigran V2712506.8% #1547.70
5 Portisch, Lajos2685502.4% #2539.89
6 Spassky, Boris V2682512.4% #2740.08
7 Tal, Mikhail2682501.9% #2740.30
8 Mecking, Henrique2682542.8% #2825.10
9 Ljubojevic, Ljubomir2675501.5% #3026.32
10 Romanishin, Oleg M2670511.2% #3325.13
11 Hort, Vlastimil2665490.9% #3533.13
12 Hübner, Robert2663531.2% #3828.31
13 Geller, Efim P2659490.6% #3951.98
14 Balashov, Yury S2657510.8% #4027.95
15 Kuzmin, Gennady P2655530.8% #4331.11
16 Larsen, Bent2655510.7% #4241.98
17 Gufeld, Eduard E2649591.1% #4940.94
18 Gulko, Boris F2648500.4% #4630.05
19 Smyslov, Vassily V2648510.4% #4755.92
20 Tseshkovsky, Vitaly V2642490.3% #5032.43
21 Gligoric, Svetozar2641540.4% #5354.07
22 Kholmov, Ratmir D2633540.3% #5951.79
23 Evans, Larry M2627711.2% #7244.93
24 Vasiukov, Evgeny A2625550.2% #6643.97
25 Savon, Vladimir A2623510.1% #6536.42
26 Chekhov, Valery A2618570.2% #7121.25
27 Byrne, Robert E2617520.1% #7048.85
28 Smejkal, Jan2616500.1% #7030.93
29 Vaganian, Rafael A2615510.1% #7125.37
30 Sveshnikov, Evgeny E2614530.1% #7327.05
31 Andersson, Ulf2611490.1% #7425.67
32 Razuvaev, Yury S2610540.1% #7731.38
33 Timman, Jan H260949 #7625.21
34 Gipslis, Aivars2608560.1% #8040.05
35 Dorfman, Iosif D2606550.1% #8224.82
36 Gheorghiu, Florin260550 #7932.89
37 Ribli, Zoltán260452 #8225.48
38 Krogius, Nikolay V2602620.2% #8846.60
39 Dvoretsky, Mark I2601570.1% #8729.22
40 Unzicker, Wolfgang2600620.2% #9051.67
41 Lein, Anatoly2600670.3% #9445.91
42 Sanguinetti, Renato2598720.5% #9960.84
43 Panno, Oscar R259852 #8741.94
44 Browne, Walter S259651 #8728.13
45 Olafsson, Fridrik259551 #8842.09
46 Beliavsky, Alexander G259451 #9023.20
47 Furman, Semen A2593580.1% #9456.24
48 Bagirov, Vladimir K2593570.1% #9340.53
49 Liberzon, Vladimir M259354 #9239.93
50 Darga, Klaus V2592690.2% #10243.01
51 Marangunic, Srdjan2591650.1% #10133.33
52 Zaitsev, Igor A2590600.1% #9838.75
53 Kochiev, Alexander2590570.1% #9720.92
54 Sosonko, Gennadi258951 #9433.78
55 Sanguinetti, Raúl C258853 #9544.07
56 Uhlmann, Wolfgang258849 #9341.91
57 Parma, Bruno258855 #9735.16
58 Pfleger, Helmut258757 #9933.56
59 Alburt, Lev O258755 #9931.52
60 Tukmakov, Vladimir B258751 #9730.95
61 Kupreichik, Viktor D258554 #9927.65
62 Bukic, Enver258459 #10339.24
63 Kurajica, Bojan258351 #9929.29
64 Sax, Gyula258351 #9925.69
65 Bronstein, David I258153 #10253.03
66 Kavalek, Lubomir258151 #10133.55
67 Averbakh, Yury L258158 #10655.05
68 Dzindzichashvili, Roman Y2576720.2% #11932.81
69 Miles, Anthony J257550 #10621.84
70 Szabó, László257155 #11359.94
71 Matanovic, Aleksandar257154 #11346.76
72 Quinteros, Miguel A256952 #11329.17
73 Taimanov, Mark E256951 #11251.06
74 Nei, Iivo2568720.1% #12445.33
75 Timoshchenko, Gennady256755 #11627.83
76 Schmid, Lothar M2566700.1% #12648.80
77 Velimirovic, Dragoljub256652 #11534.79
78 Sakharov, A.256561 #121
79 Torre, Eugenio256553 #11825.32
80 Klovans, Janis256459 #12141.88
81 Najdorf, Miguel256356 #12066.86
82 Radulov, Ivan256360 #12238.14
83 Lerner, Konstantin Z256261 #12426.99
84 Shamkovich, Leonid A256260 #12353.74
85 Palatnik, Semen A256161 #12526.92
86 Commons, Kim S256064 #12825.60
87 Matulovic, Milan255953 #12141.72
88 Ivanov, Igor V255961 #12730.14
89 Panchenko, Alexander N255962 #12823.40
90 Sigurjónsson, Gudmundur255850 #12129.43
91 Grigorian, Karen A255853 #12329.47
92 Tarjan, James E255852 #12225.02
93 Grefe, John A255865 #13029.48
94 Platonov, Igor V2557730.1% #13643.11
95 Lutikov, Anatoly S255656 #12644.06
96 Suetin, Alexey S255654 #12650.28
97 Kapengut, Albert Z2554710.1% #13732.65
98 Adorján, András255451 #12626.90
99 Karasev, Vladimir I255361 #13238.70
100 Ivkov, Borislav255252 #12843.29
101 Nikolac, Juraj255255 44.84
102 Csom, István255151 36.74
103 Rashkovsky, Nukhim N254352 30.86
104 Hecht, Hans-Joachim254059 38.08
105 Rogoff, Kenneth S253853 23.93
106 Schmidt, Wlodzimierz253851 33.88
107 Lombardy, William J253755 39.23
108 Malich, Burkhard G253657 40.25
109 Knezevic, Milorad253555 40.33
110 Petrosian, Arshak B253457 23.20
111 Filip, Miroslav253461 48.34
112 Reshevsky, Samuel H253358 65.26
113 Hulak, Krunoslav253354 25.76
114 Petrushin, Alexander I253260 29.96
115 Averkin, Orest N253067 33.01
116 Kovacevic, Vladimir252961 34.92
117 Pribyl, Josef252455 29.38
118 Zakharov, Alexander V252361 33.39
119 Tringov, Georgy P252256 39.97
120 Georgadze, Tamaz V252157 29.30
121 Katalymov, Boris N251970
122 Antoshin, Vladimir S251964 47.79
123 Kirov Ivanov, Nino251854 31.47
124 Makarichev, Sergey Y251860 23.28
125 Suba, Mihai251459 29.74
126 Suttles, Duncan251466 31.19
127 Doroshkievich, Vladimir K251362 39.17
128 Soltis, Andrew E251064 29.75
129 Vukcevich, Milan R251058
130 Benko, Pal C250857 48.62
131 Vukic, Milan250856 33.53
132 Weinstein, Norman250855 26.40
133 Balinas, Rosendo Carrean250757
134 Donner, Johannes H250752 49.64
135 Díez del Corral, Jesús250764 43.89
136 Jansa, Vlastimil250751 34.25
137 Faragó, Iván250651 30.90
138 Gurgenidze, Bukhuti I250564 43.29
139 Knaak, Rainer F250551 23.94
140 Pachmann, Ludek250557 52.80
141 Bilek, István250555 44.55
142 Stean, Michael F250453 23.48
143 Vogt, Lothar H250351 25.11
144 Rodriguez, Ruben250366 30.22
145 Tatai, Stefano250251 38.93
146 García Gonzáles, Guillermo250255 23.22
147 Mariotti, Sergio250153 30.55
148 Keene, Raymond249752
149 Dueball, Juergen249765 31.91
150 Lukin, Andrei M249774 28.50
151 Karner, Hillar249674 41.59
152 Hartston, William R249554 29.54
153 Radev, Nikolai249461 38.19
154 Calvo Minguez, Ricardo249462 33.35
155 Schweber, Samuel249357 40.62
156 Ree, Hans249251 32.45
157 Christiansen, Larry M248959 20.67
158 Mohrlok, Dieter248976
159 Plachetka, Jan248854 32.03
160 Podgaets, Mikhail Y248866 29.60
161 Pereszupkin, Alexander248764
162 Simic, Radoslav248766 28.72
163 Espig, Lutz248753 28.15
164 Nemet, Ivan248661 33.87
165 Anikaev, Yury248565 28.66
166 Kestler, Hans-Günter248466 37.21
167 Vadasz, Laszlo248154 29.09
168 Karaklajic, Nikola248163 51.01
169 Ghizdavu, Dumitru248171 27.77
170 Bleiman, Yaacov248067 29.47
171 Eolian, Levon S247773 17.45
172 Planinc, Albin247752 32.86
173 Rajkovic, Dusan247559 34.70
174 Ciocaltea, Victor247555 45.12
175 Kraidman, Yair247557 44.32
176 Kaplan, Julio P247257 26.59
177 Bednarski, Jacek B247160 37.95
178 Robatsch, Karl247160 48.37
179 Efimov, Igor247173 16.45
180 Biyiasas, Peter246855 26.28
181 Padevsky, Nikola B246859 43.75
182 Rodriguez, Amador246755 20.47
183 Barcza, Gedeon246775 65.52
184 Barle, Janez246760 24.93
185 Johannsson, Ingi Randver246665
186 Marovic, Dražen246654 39.12
187 Honfi, Karoly246653 46.34
188 Ostojic, Predrag246558 39.02
189 Barczay, Laszlo246551 41.02
190 Forintos, Gyözö V246554 41.58
191 Ghitescu, Theodor246564 43.09
192 Martz, William E246464
193 Rath, Ulrik246466 30.18
194 Hamann, Svend246370 36.39
195 Garcia Martinez, Silvino246355 32.65
196 Janoševic, Dragoljub246257 53.64
197 Řgaard, Leif246259 25.15
198 Antunac, Goran246264 31.86
199 Poutiainen, Pertti246162
200 Cvetkovic, Srdjan246167 30.99
201 Lputian, Smbat G246173 19.04
202 Ciric, Dragoljub M246065 41.29
203 Schneider, Lars Ake246060
204 Sofrevski, Jovan245963 41.53
205 Zuckerman, Bernard245963 33.90
206 Kozlov, V.245964
207 Mnatsakanian, Eduard A245867 38.23
208 Damjanovic, Mato245854 49.93
209 Spiridonov, Nikola245754 38.99
210 Szmetan, Jorge245754 26.76
211 Westerinen, Heikki MJ245752 32.83
212 Sahovic, Dragutin245665 36.55
213 Raicevic, Vladimir245557 27.82
214 Zilberstein, Valery I245474 33.87
215 Mestrovic, Zvonimir245364 32.36
216 Spassov, Liuben245364 33.93
217 Vladimirov, Evgeny Y245263 20.11
218 Gaprindashvili, Nona245064 35.82
219 Kuijpers, Franciscus Antonius244965
220 Dueckstein, Andreas244866 49.57
221 Flesch, Janos244763 43.41
222 Popov, Luben244654 41.08
223 Cosulich, Roberto244670
224 Minic, Dragoljub244658 39.97
225 Stoica, Valentin244667 27.04
226 Lengyel, Levente244661 43.71
227 Bisguier, Arthur B244655 47.39
228 Gerusel, Mathias244562 39.06
229 Haag, Ervin244559 44.13
230 Pintér, József244555 23.30
231 Szekely, Peter244459 22.05
232 Mednis, Edmar J244455 39.93
233 Bohm, Hans244352 27.12
234 Castro Rojas, Oscar Humberto244254 23.80
235 Regan, Kenneth244269 17.46
236 Prandstetter, Eduard244262 28.20
237 Peters, John A244171 26.05
238 Pomar Salamanca, Arturo244155 45.49
239 Jansson, Borje244066 34.95
240 Khalikian, Ovik243973
241 Vaisman, Volodia243963 39.18
242 Portisch, Ferenc243958 37.88
243 Lakic, Nikola243964 29.62
244 Musil, Vojko243872 31.53
245 Matera, Salvatore Joseph243856
246 Martinovic, Slobodan243858 31.59
247 Kagan, Shimon243758 34.89
248 Malevinsky, Alexander A243770 27.01
249 Guimard, Carlos E243764 63.89
250 Krnic, Zdenko243672 29.40
251 Rodriguez Vargas, Orestes243657 33.65
252 Goodman, David SC243571
253 Van Wijgerden, Cornelis243559 26.76
254 Pritchett, Craig William243562
255 Jakobsen, Ole243569 34.36
256 Grinberg, Ricardo243568 29.12
257 Langeweg, Kick243553 39.97
258 Gutman, Lev243459 31.42
259 Ignatiev, Felix N243464 45.14
260 Cobo Arteaga, Eldis243364
261 Sydor, Andrzej243257 40.15
262 Jiménez Zerquera, Eleazar243268 48.68
263 Deze, Anton243270
264 Ermenkov, Evgenij243258 27.41
265 Witkowski, Stefan243166 45.42
266 Augustin, Josef243156 34.78
267 Bohosjan, Sarkis243164 35.91
268 Nunn, John D M243058 21.84
269 Rubinetti, Jorge A243054 31.90
270 McKay, Roderick M242971 25.05
271 Eising, Johannes242961 41.75
272 Dely, Peter242963 42.65
273 Hazai, Laszlo242858 23.71
274 Garcia, Raimundo242857 40.75
275 Ornstein, Axel242754 24.84
276 Rogulj, Branko242767 25.57
277 Buljovcic, Ivan242770 40.17
278 Messing, Hrvoje242765 36.59
279 Hase, Juan Carlos242767
280 Popov, Nikolay242667
281 Bronstein, Luis242564 30.74
282 Horner, Jeff242568 27.51
283 Brond, Victor242566
284 Rukavina, Josip242559 34.25
285 Yanofsky, Daniel A242466 51.92
286 Liebert, Heinz242354 40.76
287 Petkevich, Jusefs242267 36.19
288 Lederman, Leon242260 29.76
289 Estrin, Yacov B242267 53.85
290 Hug, Werner242158 24.47
291 Lechtynsky, Jiri242161 29.26
292 Zwaig, Arne242059
293 Ligterink, Gert242052 27.28
294 Pytel, Krzysztof242056 31.79
295 Haygarth, Michael J242069
296 Adamski, Jan241953 33.30
297 Toth, Bela241963 33.85
298 Chellstorp, Craig V241969
299 Ivanovic, Božidar241858 30.51
300 Williams, Arthur Howard241868
301 Soler, Alberto241870
302 Doda, Zbigniew241753 46.02
303 Bertok, Mario241666 47.49
304 Diesen, Mark C241663
305 Enklaar, Bertus F241557
306 Hartoch, Robert G241554
307 Meduna, Eduard241571 26.46
308 Johannessen, Svein241475 39.36
309 Peev, Peicho Chonev241359 36.90
310 Bukal, Vladimir Sr241265 37.32
311 Rossetto, Héctor D241255 54.47
312 Penrose, Jonathan241069 43.39
313 Bellin, Robert240960 24.66
314 Marjanovic, Slavoljub240863 22.14
315 van Scheltinga, Tjeerd D240771 62.97
316 Nicevski, Risto240657 31.67
317 Balduzzi, Reynaldo240569
318 Garcia, R.240569
319 Hernandez, Roman240554 27.26
320 Sznapik, Aleksander240454 26.05
321 De Bruycker, Bernard240469 35.70
322 Ilievski, Dimitar240366 35.51
323 Webb, Simon240357 27.72
324 Van Riemsdijk, Herman C240370 28.51
325 Jamieson, Robert Murray240263
326 Botterill, George Steven240161
327 Lehmann, Heinz Dr240071
328 Gliksman, Darko240068 39.39
329 Neckar, Lubomir239865 26.57
330 Kovacs, Laszlo M239866 38.40
331 Moehring, Guenther239554 40.26
332 Sloth, Jorn239472 32.48
333 Filipowicz, Andrzej239365 38.79
334 Akvist, Hakan239263 35.34
335 Giterman, Shlomo239269
336 Mestel, A Jonathan239259 19.95
337 Uddenfeldt, Dan239275 25.91
338 Zichichi, Alvise239067 38.65
339 Visier Segovia, Fernando238966 34.07
340 Cuasnicu, Oscar238659 34.34
341 De la Vega, Hector238670 50.94
342 Basman, Michael J238568 30.94
343 Gesos, Pavlos238573 31.76
344 Garcia, Jo238271
345 Debarnot, Roberto238158 29.56
346 Garcia Padron, Jose238163 18.93
347 Markland, Peter R237972 25.87
348 Ostermeyer, Peter237968 33.38
349 Rohde, Michael A237967 17.51
350 Whiteley, Andrew J237959 29.72
351 Bönsch, Uwe237854 18.37
352 Navarovszky, Laszlo237863 43.90
353 Harandi, Khosro237758 26.49
354 Lukacs, Peter237770 26.64
355 Bjelajac, Milan237665 28.95
356 Kozma, Julius237659 47.74
357 Betancort Curbelo, Juan237570 34.54
358 Gasic, Bozidar237469 39.38
359 Macles, Jacques237464 31.64
360 Bellon Lopez, Juan Manuel237452 26.80
361 Wade, Robert Graham237365
362 Kostro, Jerzy237366 40.09
363 Silva, Fernando237359 26.57
364 Emma, Jaime J237263 39.11
365 Radashkovich, Itchak237168
366 Eslon, Jaan237167 24.98
367 Casas, Fernando237073 50.52
368 Kinnmark, Ove236964 32.18
369 Pokojowczyk, Jerzy236956 28.02
370 Szymczak, Zbigniew236857 25.15
371 Barreras, Alberto236868 25.89
372 Sibarevic, Milenko236864 31.95
373 Rayner, Emmanuel236776 18.71
374 Banas, Jan236658 29.73
375 Rocha, Antonio236675 32.71
376 Lombard, Andre236455 26.44
377 Knox, Victor W236469 32.10
378 Akopian, Gagik236473 35.61
379 Tompa, Janos236358 29.83
380 Czerniak, Moshe236364 67.07
381 Sapi, Laszlo236159 41.93
382 Mihaljcisin, Mihajlo236165 44.02
383 Iskov, Gert236063 28.58
384 Lanc, Alois235767 29.03
385 Ek, Hans235766 48.39
386 Alexandria, Nana235773 27.37
387 Eley, Brian235676
388 Zinn, Lothar235563 38.94
389 Holm, Sejer235575 37.55
390 Onat, Ilhan235571 47.23
391 Maciejewski, Andrzej235459 25.64
392 Trapl, Jindrich235474 34.92
393 Hindle, Owen M235375 36.95
394 Estevez Morales, Guillermo235157
395 Cuartas, Carlos235065 36.54
396 Szilágyi, György234959 55.65
397 Levy, David Neil Lawrence234865
398 Van Baarle, C John234861 31.85
399 Donchenko, Anatoly G234768 36.49
400 Dieks, Roy G234773 21.07
401 Schaufelberger, Heinz234672 29.28
402 Speelman, Jonathan S234565 20.40
403 Pinal, Nelson Borges234567
404 Tan Lian Ann234560
405 Rantanen, Yrjo A234268 26.84
406 Fuller, Maxwell L234263 32.08
407 Ftácnik, Lubomír234264 19.33
408 Spacek, Petr234173 23.01
409 Cardoso, Radolfo Tan234165
410 Trabattoni, Franco234075 20.79
411 Naranja, Renato234073 36.43
412 Fichtl, Jirí234059 56.03
413 Grabczewski, Romuald234066 45.06
414 Schinzel, Wladyslaw234056 33.77
415 Petran, Pal233956 30.45
416 Garcia Palermo, Carlos233867 23.24
417 Gofshtein, Leonid D233774 23.85
418 Wahlbom, Magnus233774 31.79
419 Liljedahl, Lennart233771 29.50
420 Haik, Aldo233762 24.36
421 De Greif, Boris233666 47.04
422 Quinones, Oscar Carillo233670
423 Hutchings, Stuart J233569
424 Manasterski, Lutoslaw233571 40.05
425 Kluger, Guyla233562 63.12
426 Corden, Martyn J233369
427 Van der Vliet, Fredrik233260
428 Jancev, Lazo233263
429 Kristiansen, Erling233166 40.20
430 Delgado, Alberto233073
431 Kushnir, Alla232971
432 Jankovec, Ivan232971 38.36
433 Ludgate, Alan232971 31.49
434 Boudy, Julio232959 25.71
435 Franco Ocampos, Zenon232864 20.79
436 Wirthensohn, Heinz232769 25.82
437 Osterman, Rudolf232770 30.60
438 Baumbach, Friedrich232662 41.47
439 Brkljaca, Ante232569 23.30
440 Kuligowski, Adam232362 21.18
441 Fernandez, Juan C232372 25.57
442 Cafferty, Bernard232265 42.67
443 Garcia, Wilfredo232167 22.26
444 Boersma, Paulus A232163 28.62
445 Bernard, Ryszard232170 32.52
446 Bielczyk, Jacek232156 24.01
447 Trois, Francisco RT232066
448 Eperjesi, Laszlo232062 33.78
449 Niklasson, Christer231969 24.15
450 Gruenberg, Hans Ulrich231961 21.14
451 Pesantes Carbajal, Carlos231867
452 Horvath, Tamas231661 25.35
453 Hesse, Peter231675 32.41
454 Fedder, Steen231669 25.71
455 Mueller, Klaus Uwe231559
456 Borkowski, Franciszek231565 19.58
457 Sikora Lerch, Jan231372
458 Rigo, Janos231363 28.33
459 Medina García, Antonio A231370 57.40
460 Fraguela Gil, Jose Miguel231255
461 Seidler, Aldo231160
462 Gereben, Ernö231070 69.69
463 Garcia, Horacio230975
464 Helmertz, Per Inge230976
465 Kollberg, Lothar230867
466 Dietze, Wolfgang230861 26.69
467 Franzen, Jozef230863 31.06
468 Taruffi, Daniele230775 18.48
469 Rodriguez Cordoba, Jesus R230770 27.70
470 Fedorowicz, John P230468 18.42
471 Hoen, Ragnar230473 36.40
472 Govedarica, Radovan230265 29.04
473 Povah, Nigel E230172 24.61
474 Kaiszauri, Konstanty230073 24.34
475 De Veauce, Louis230075
476 Menvielle Lacourrelle, Augusto230061 38.54
477 McDonald Ross, Michael229969
478 Petran, Peter229857 22.51
479 Nowak, Ignacy229766 28.13
480 Novak, Ivan229758 34.09
481 Rosenlund, Thorbjorn229570 25.69
482 Vulevic, Vjekoslav229467 27.90
483 Cibulka, Vladimir229465 35.32
484 Andres Mendez, Miguel229470
485 Paehtz, Thomas Sr229468 20.48
486 Bueno Perez, Lazaro229373
487 Diaz, Joaquin C229257 28.65
488 Day, Lawrence A229174 28.07
489 Rumens, David E229161 37.43
490 Thorsteinsson, Bjorn229167
491 Arutiunov, Albert229172
492 Lebredo, Gerardo229056 26.57
493 Lipski, Tadeusz229063 33.39
494 Faase, Rob228971
495 Marszalek, Rafal228763 36.25
496 Braun, Gottfried228765 43.66
497 Van der Sterren, Paul228761 20.94
498 Zoltek, Tadeusz228475 39.49
499 Georgievski, Vanco228162 30.12
500 Durao, Joaquim227965 46.34

These ratings, calculated as of February 28, 1977, incorporate all games (against rated opponents) played in the time between March 1, 1976 and February 28, 1977, along with the ratings that were already calculated as of February 29, 1976. 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 February 28, 1977. This represents the player's estimated strength on March 1, 1977.

+/- 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 March 1, 1977. The +/- value represents the standard deviation of that estimate; the player's true strength on March 1, 1977 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 March 1, 1977. 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 February 28, 1977. 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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