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Top 10 active players as of June 30, 1966

  #  

Player Rating +/-
1 Fischer, Robert J277255
2 Petrosian, Tigran V274250
3 Botvinnik, Mikhail M272656
4 Korchnoi, Viktor L271049
5 Spassky, Boris V270750
6 Stein, Leonid Z270250
7 Geller, Efim P269150
8 Tal, Mikhail268650
9 Keres, Paul267852
10 Najdorf, Miguel267658

About these ratings

All active players as of June 30, 1966

  #  

Player Rating +/- Best? 75%? Age
1 Fischer, Robert J27725539.8% #423.31
2 Petrosian, Tigran V27425017.0% #737.04
3 Botvinnik, Mikhail M27265612.6% #1054.86
4 Korchnoi, Viktor L2710495.7% #1235.27
5 Spassky, Boris V2707505.3% #1229.42
6 Stein, Leonid Z2702504.1% #1331.63
7 Geller, Efim P2691502.9% #1641.33
8 Tal, Mikhail2686502.4% #1729.64
9 Keres, Paul2678521.8% #1950.48
10 Najdorf, Miguel2676582.6% #2156.21
11 Smyslov, Vassily V2671501.2% #2145.27
12 Boleslavsky, Isaak E2662601.7% #2647.06
13 Polugaevsky, Lev A2660500.6% #2431.61
14 Portisch, Lajos2651490.4% #2729.24
15 Taimanov, Mark E2636500.2% #3340.40
16 Larsen, Bent2628510.1% #3731.32
17 Ivkov, Borislav2627480.1% #3732.63
18 Gligoric, Svetozar2627490.1% #3743.41
19 Bronstein, David I2624510.1% #3942.36
20 Olafsson, Fridrik2619620.4% #4531.43
21 Unzicker, Wolfgang2610540.1% #4741.01
22 Kholmov, Ratmir D261051 #4641.13
23 Uhlmann, Wolfgang261049 #4531.25
24 Reshevsky, Samuel H2606540.1% #4954.59
25 Furman, Semen A2605570.1% #5145.58
26 Benko, Pal C2604530.1% #5037.95
27 Lutikov, Anatoly S2602580.1% #5433.40
28 Suetin, Alexey S259152 #5839.62
29 Antoshin, Vladimir S259151 #5837.13
30 Vasiukov, Evgeny A259052 #5833.32
31 Krogius, Nikolay V258752 #6035.93
32 Gipslis, Aivars258653 #6129.39
33 Averbakh, Yury L258452 #6244.39
34 Evans, Larry M258157 #6634.27
35 Pachmann, Ludek257849 #6542.13
36 Zaitsev, Alexander N2576690.1% #7631.04
37 Lein, Anatoly257553 #6835.26
38 Panno, Oscar R257255 #7231.29
39 Sanguinetti, Raúl C257256 #7233.41
40 Byrne, Robert E257059 #7538.19
41 Matulovic, Milan256849 #7231.05
42 Hort, Vlastimil256852 #7322.47
43 Shamkovich, Leonid A256854 #7443.08
44 Bolbochán, Julio256654 #7646.28
45 Addison, William G256460 #8032.59
46 Parma, Bruno256350 #7524.50
47 Matanovic, Aleksandar256349 #7636.10
48 Szabó, László256350 #7649.28
49 Bilek, István256149 #7633.88
50 Donner, Johannes H255950 #7938.98
51 Darga, Klaus V255756 #8332.35
52 Pomar Salamanca, Arturo255252 #8534.82
53 Bagirov, Vladimir K254965 #9429.87
54 Gufeld, Eduard E254155 #9530.28
55 Liberzon, Vladimir M254153 #9429.27
56 Platonov, Igor V254070 #10532.45
57 Schmid, Lothar M253956 #9838.14
58 Filip, Miroslav253950 #9537.67
59 Kotov, Alexander A253863 #10252.88
60 Flohr, Salo253860 #10057.63
61 Ilivitsky, Georgy A253765 #10445.17
62 Rossolimo, Nicolas253763 #10456.34
63 Bannik, Anatoly A253671 #10944.56
64 Gheorghiu, Florin253452 #10022.23
65 Nezhmetdinov, Rashid G253366 #10853.54
66 Saidy, Anthony F253160 #10729.12
67 Ciric, Dragoljub M252951 #10330.63
68 Kavalek, Lubomir252750 #10522.88
69 Nei, Iivo252752 #10534.66
70 Simagin, Vladimir P252252 #11047.02
71 Pfleger, Helmut252153 #11022.89
72 Fuchs, Reinhart252150 #11031.75
73 Sherwin, James T251766 #12232.68
74 Stĺhlberg, Gideon251556 #11758.43
75 Janoševic, Dragoljub251552 #11542.97
76 Padevsky, Nikola B251352 #11733.09
77 Gurgenidze, Bukhuti I251256 #12132.63
78 Yanofsky, Daniel A251161 #12341.26
79 Trifunovic, Petar250851 #12055.82
80 Tringov, Georgy P250852 #12129.31
81 Johansson, Martin250661 #12747.89
82 Bondarevsky, Igor Z250675 #13553.13
83 Dzindzichashvili, Roman Y250468 #13322.15
84 Karaklajic, Nikola250260 #13040.35
85 O'Kelly de Galway, Albéric250252 #12555.12
86 Díez del Corral, Jesús250261 #13233.23
87 Savon, Vladimir A250059 #13125.75
88 Khasin, Abram I250065 #13643.37
89 Klovans, Janis250065 #13631.22
90 Osnos, Viacheslav V249854 #13030.93
91 Ghitescu, Theodor249854 #13132.43
92 Bisguier, Arthur B249755 #13236.73
93 Rossetto, Héctor D249653 #13143.80
94 Tolush, Alexander K249674 #14356.16
95 Lilienthal, Andor249559 #13655.15
96 Byrne, Donald249563 #13836.05
97 Ciocaltea, Victor249550 #13134.45
98 Bobotsov, Milko G249450 #13234.75
99 Minev, Nikolay N249461 #13835.48
100 Vladimirov, Boris T249360 #13837.12
101 Zuckerman, Bernard249062 23.25
102 Eliskases, Erich G248956 53.37
103 Lengyel, Levente248850 33.05
104 Sakharov, Yury N248761 43.78
105 Pilnik, Herman248756 52.48
106 Velimirovic, Dragoljub248656 24.13
107 Milev, Zdravko A247972 36.68
108 Bikhovsky, Anatoly A247764 32.17
109 Rakic, Tomislav247673 31.63
110 Minic, Dragoljub247652 29.32
111 Barcza, Gedeon247651 54.85
112 Penrose, Jonathan247661 32.73
113 Garcia, Raimundo247551 30.09
114 Pietzsch, Wolfgang W247450 35.52
115 Alster, Ladislav247372 39.24
116 Ljavdansky, Vladimir247364
117 Kestler, Hans-Günter247266 26.55
118 Zakharov, Alexander V247062 22.73
119 Bouwmeester, Henk B246963 36.78
120 Sanguinetti, Renato246870 50.19
121 Schmidt, Wlodzimierz246763 23.22
122 Guimard, Carlos E246659 53.23
123 Palmason, Gudmundur246568
124 Forintos, Gyözö V246452 30.91
125 Nikolac, Juraj246474 34.19
126 Flesch, Janos246451 32.75
127 Soos, Bela246356 36.31
128 Smejkal, Jan246372 20.27
129 Nowak, Erwin246259
130 Nikitin, Aleksander S246264 31.42
131 Malich, Burkhard G246050 29.59
132 Mikenas, Vladas246066 56.20
133 Nilsson, Zandor245975
134 Jiménez Zerquera, Eleazar245951 38.01
135 Sergievsky, Vladimir D245862 29.74
136 Kottnauer, Cenek245765 56.35
137 Dueckstein, Andreas245556 38.90
138 Trapl, Jindrich245573 24.27
139 Robatsch, Karl245452 37.71
140 Damjanovic, Mato245150 39.27
141 Radovici, Corvin245166 34.53
142 Dely, Peter245151 31.98
143 Bokuchava, Alexander245073
144 Brinck Claussen, Bjorn244867
145 Kupper, Josef244766 34.30
146 Schweber, Samuel244651 29.95
147 Chistiakov, Alexander N244569 52.44
148 Prins, Lodewijk244471 53.42
149 Smederevac, Petar244357 43.84
150 Udovcic, Mijo244354 45.80
151 Kraidman, Yair244262 33.66
152 Radulov, Ivan244070 27.48
153 Novopashin, Arkady244073
154 Jansa, Vlastimil243952 23.59
155 Buljovcic, Ivan243759 29.51
156 Kolarov, Atanas S243660 32.33
157 Bukic, Enver243559 28.58
158 Böök, Eero243563 56.39
159 Nemet, Ivan243475 23.21
160 Emma, Jaime J243454 28.45
161 Liebert, Heinz243452 30.10
162 Johannessen, Svein243357 28.70
163 Buslaev, Alexander N243272 36.70
164 Milic, Borislav243259 40.69
165 Lepeshkin, Vladimir243168
166 Blatny, Frantisek243169 33.24
167 Lehmann, Heinz Dr243052
168 Maric, Rudolf243066 39.13
169 Bogdanovic, Rajko243052 34.62
170 Barczay, Laszlo243055 30.36
171 Estrin, Yacov B243069 43.19
172 Bertok, Mario242953 36.82
173 Marovic, Dražen242956 28.46
174 Medina García, Antonio A242954 46.74
175 Hecht, Hans-Joachim242861 27.42
176 Haygarth, Michael J242774
177 Vaisman, Alexander N242672
178 Doda, Zbigniew242654 35.36
179 Sokolov, Vladimir242561 32.82
180 Mohrlok, Dieter242568
181 Nikolaevsky, Yuri V242359
182 Haag, Ervin242151 33.47
183 Zinn, Lothar242054 28.28
184 Bednarski, Jacek B241952 27.30
185 Borisenko, Georgy K241869 44.10
186 Foguelman, Alberto241754 42.71
187 Hübner, Robert241769 17.65
188 Bradvarevic, Aleksandar241557
189 Mihaljcisin, Mihajlo241570 33.36
190 Pelikán, Jorge241554 60.19
191 Czerniak, Moshe241453 56.41
192 Zuidema, Coenraad241355
193 Mnatsakanian, Eduard A241263 27.56
194 Golz, Werner241055
195 Langeweg, Kick241053 29.31
196 Sofrevski, Jovan241070 30.86
197 Foldi, Jozsef240972 32.60
198 van Scheltinga, Tjeerd D240954 52.31
199 Kuijpers, Franciscus Antonius240854
200 Clarke, Peter H240862
201 Enevoldsen, Jens240762 58.76
202 Doroshkievich, Vladimir K240759 28.51
203 Honfi, Karoly240650 35.68
204 Teschner, Rudolf240570 44.37
205 Carmona, Jose Luis240365
206 Fichtl, Jirí240357 45.37
207 Neikirkh, Oleg N240261 52.31
208 Andersen, Borge240263 32.28
209 Puc, Stojan240171 45.22
210 Nikolic, Stanimir240157 31.43
211 Hamann, Svend240158 25.73
212 Popov, Luben240172 30.42
213 Porat, Yosef240162 57.06
214 Torán Albero, Román240057 34.73
215 Westerinen, Heikki MJ240064 22.17
216 Kozma, Julius239659 37.08
217 Lee, Peter N239464
218 Seifert, Milan239475 26.07
219 Planinc, Albin239374 22.20
220 Filipowicz, Andrzej239355 28.13
221 Aloni, Izak239364
222 Tatai, Stefano239266 28.27
223 Kluger, Guyla239154 52.46
224 Alatortsev, Vladimir A239173 57.13
225 Sliwa, Bogdan239055 44.40
226 Cuéllar Gacharná, Miguel238860 49.62
227 Hennings, Artur238854 25.96
228 Kinnmark, Ove238764 21.52
229 Van den Berg, Carel Benjamin238655
230 Tröger, Paul238668 53.01
231 Adorján, András238566 16.25
232 Kotkov, Yuri M238571
233 Marsalek, Josef238574 31.29
234 Myagmarsuren, Lhamsuren238372 28.37
235 Ree, Hans238357 21.78
236 Henneberke, Franciscus238270
237 Blau, Max238272 47.53
238 Osmanagic, Dusan238069
239 Mecking, Henrique237962 14.44
240 Wade, Robert Graham237852
241 Ujtelky, Maximilián237856 51.19
242 Drozd, Ryszard237776 32.04
243 Kozomara, Vladimir237664
244 Bukhman, Eduard237469 25.06
245 Augustin, Josef237459 24.12
246 Bazan, Osvaldo237370 31.71
247 Pogats, Jozsef237358 37.96
248 Djurovic, Dejan237374
249 Balcerowski, Witold237155 30.88
250 Bachtiar, Arovah237062 32.26
251 Rodriguez Gonzales, Jesus237063
252 Bakulin, Nikolac I237069
253 Golombek, Harry236957 55.33
254 Bolbochán, Jácobo236959 59.51
255 Kuzmin, Gennady P236968 20.45
256 Sandor, Bela236970 46.54
257 Tompa, Janos236864 19.17
258 Wexler, Bernardo236660 41.24
259 Ostojic, Predrag236658 28.36
260 Adamski, Jan236669 22.63
261 Rubinetti, Jorge A236453 21.25
262 Skold, Kristian236466
263 Navarovszky, Laszlo236254 33.24
264 Pithart, Frantisek236160
265 Walther, Edgar236169 35.52
266 Gromek, Jozef236059 35.19
267 Kovacs, Laszlo M236054 27.73
268 Lee, F.235967
269 Roth, Rolf235966 28.08
270 Rolland, Pierre235968
271 Martinez, Gustavo235965 22.64
272 Polgar, Istvan235758 21.59
273 Eising, Johannes235768 31.08
274 Plater, Kazimierz235771 51.32
275 Ekenberg, Bengt235676
276 Kostro, Jerzy235566 29.43
277 Mestrovic, Zvonimir235459 21.70
278 Thorbergsson, Freysteinn235468
279 Bhend, Edwin235470 34.80
280 Rocha, Antonio235458 22.05
281 Naranja, Renato235476 25.76
282 Pirc, Vasja235259 58.53
283 Grabczewski, Romuald235262 34.40
284 Littlewood, John Eric235275
285 Cruz, Raul C235256
286 Litsberger, Rune235171
287 Cobo Arteaga, Eldis235056
288 Pietrusiak, Bogdan234956 32.95
289 Camara, Helder234962 29.40
290 Gerusel, Mathias234968 28.40
291 Gat, Israel234864
292 Rajkovic, Dusan234767 24.04
293 Kagan, Shimon234764 24.23
294 Prameshuber, Aleksander234671
295 Filep, Tibor234569 30.51
296 Baumbach, Friedrich234572 30.80
297 Brzozka, Stefan234462
298 Blom, Kaj234369
299 Jakobsen, Ole234366 23.70
300 Ujtumen, Tudev234362 26.84
301 Holaszek, Hans234276
302 Barendregt, Johan Teunis234258
303 Horberg, Beng Eric234164
304 Kramer, Haije234062 48.60
305 Gasztonyi, Endre233971
306 Varnusz, Egon233860 32.62
307 Eisinger, Max Jr233873 57.01
308 Stefanov, P.233865
309 Menvielle Lacourrelle, Augusto233661 27.88
310 Szily, József233666 52.74
311 Knezevic, Milorad233470 29.66
312 Quinteros, Miguel A233473 18.51
313 Van Geet, Dirk Daniel233467 34.33
314 Ulvestad, Olaf233462 53.67
315 Cebalo, Mišo233372 21.40
316 Besztercsenyi, Tibor233265 29.22
317 Quinones, Oscar Carillo233157
318 Szilágyi, György233154 44.98
319 Jovcic, Milan233063 36.74
320 Stepak, Yedael233064 25.85
321 Besser, Hans232869 31.40
322 Csom, István232855 26.08
323 Letelier Martner, René232856 50.77
324 Jongsma, Alexander232871 28.08
325 Starck, Bodo232770 31.71
326 Domnitz, Zadok232661 32.71
327 Gaprindashvili, Nona232566 25.16
328 Liptay, Laszlo232461 28.98
329 Littlewood, Norman232361
330 Franz, Joachim232275 32.14
331 Gunsberger, A.232171
332 Saborido, Rafael232166
333 Perez Perez, Francisco Jose231857
334 Bielicki, Carlos231554 26.12
335 Szilagyi, Peter231563 28.67
336 Šajtar, Jaroslav231462 44.57
337 Cuartas, Carlos231365 25.87
338 Soloviev, Vladimir A231170 38.36
339 Hindle, Owen M231162 26.29
340 Witkowski, Stefan230965 34.75
341 Gojak, Ilija230975 32.11
342 Neukirch, Detlef230862 25.88
343 Hartston, William R230867 18.88
344 Kieninger, Georg230764 64.07
345 Schoeneberg, Manfred230776 19.98
346 Luckis, Marcos230659 61.45
347 Kerkhoff, Leo J230676 21.63
348 Gereben, Ernö230662 59.03
349 Vranesic, Zvonko230565 27.74
350 Yepez Obando, Olavo230561
351 Palermo, Vicente230457 34.30
352 Jenei, Ferenc230373 50.68
353 Sloth, Jorn230169 21.81
354 Garcia Orus, Francisco229764
355 Dunkelblum, Arthur229573 60.19
356 Beni, Alfred229363 43.07
357 Sydor, Andrzej229357 29.49
358 Ortega, Rogelio229058
359 Pugach, Mario228862
360 Peretz, Malkiel228767 23.06
361 Bronstein, Luis228769 20.08
362 Pavlov, Mircea228761 28.79
363 Ilievski, Dimitar228674 24.84
364 Scanavino, Eduardo228468
365 Boutteville, Cesar228464 49.02
366 Portisch, Ferenc228361 27.22
367 Visier Segovia, Fernando228263 23.41
368 Tarnowski, Alfred228267 49.32
369 Pilnick, Carl228176 42.52
370 Santa Cruz, Hugo228161
371 Ader Hausman, Walter228068
372 Faragó, Iván227964 20.24
373 Behrensen, Jorge227958 36.17
374 Roos, Michel227868 33.84
375 De las Heras, Juan Carlos227870 25.90
376 Ankerst, Marjan227769 23.54
377 Moehring, Guenther227557 29.60
378 Susic, Idriz227272 30.22
379 Garcia, Gilberto227057
380 Shashin, Boris S226972
381 Berger, Bela226475 34.88
382 Thorsteinsson, Bjorn226467
383 Cafure, Emilio226161
384 Boey, Josef226065 32.12
385 Reinhardt, Enrique H225969 63.25
386 Aloni, Yoel225874
387 Delander, Adolf225776 31.63
388 Schroeder, Hannes225776
389 Zinser, Sylvain225357
390 Mazzoni, Guy225259 31.75
391 Leban, Slavko225174
392 Ozsvath, Andras225062 36.86
393 Alvarez del Monte, Jose Luis225057
394 De Rooi, Paul225064 37.83
395 Hajtun, Josef224860
396 Gadia, Olicio224662
397 Durao, Joaquim224458 35.68
398 Schroeder, E.224276
399 Franklin, Michael J224173 35.41
400 Cotta, Eduardo224176
401 Aitken, James M223973 57.67
402 Studenetzky, Moises223874 32.98
403 Aaron, Manuel223875 30.50
404 Opocenský, Karel223761 74.40
405 Garcia Martinez, Silvino223759 21.98
406 Miranda, Marcio MC223763
407 Litkiewicz, Kurt223376 32.12
408 Spassov, Liuben222974 23.27
409 Lewi, Jerzy222668
410 Hartoch, Robert G222666
411 Garcia, JM.222173
412 Molteni, O.222173
413 Bakali, M.222171
414 Rodriguez, Al221971
415 Füster, Géza221966 56.36
416 Suttles, Duncan221873 20.52
417 Csulits, Anton221674 24.24
418 Sapi, Laszlo221659 31.28
419 Palacios de la Prida, Ernesto221473 22.63
420 Partos, Charles221363 29.88
421 Serwinski, Benedykt221171
422 Garcia, Horacio221067
423 Gasic, Bozidar220962 28.72
424 Koberl, Ferenc220771
425 Kristinsson, Jon220667 24.04
426 Pelitov, Dimitar220563 36.05
427 Fonrobert, Gert Wolfgang220175
428 Ortega, L.220164
429 Prelovszky, Laszlo220063
430 Farah, Rodolfo219974 34.95
431 Sigurjónsson, Gudmundur219271 18.76
432 Nicolai, Werner218973
433 Godoy Bugueno, David A218461
434 Malcanek, Oldrich218367
435 Galvez Extremera, Francisco218271
436 Hodakowsky, Georg218276
437 Calero, Ivan218264
438 Lachut, Jan218071
439 Calneggia, Raul217967
440 Zoltek, Tadeusz217771 28.82
441 Neamtu, Serban217665 32.38
442 Bokor, Istvan217572 30.42
443 Luna, Julio217468
444 Paoli, Enrico217455 58.46
445 Waltemathe, A.217071
446 Struner, Philipp216875
447 Figueroa, Eduardo216671
448 Duin, L.216571
449 Kolbak, Jens216573 21.41
450 Littleton, Michael Flannan216166
451 Ong Yok Hwa216064
452 Nerenz, Werner215876
453 Brameyer, Hermann215876 26.87
454 de Souza Mendes, Joăo215662 73.93
455 Chemes, L.215473
456 Halfdanarson, Jon215471
457 Perez Cascella, Julio215371 26.20
458 Ramirez, R.215371
459 Silva Nazzari, Raul215274
460 Fletzer, Gino214973
461 Degenhardt, Norbert214576
462 Bruentrup, Dieter214566
463 Ziembinski, Marian213971 37.96
464 Schroeder, R.213876
465 Roux Cabral, Fausto213066
466 Gonzalez Haro, E.212666
467 Hesse, Peter212176 21.75
468 Nielsen, Jonny211874
469 Iglesias, Alfredo211666
470 Boehnisch, Manfred210975 25.20
471 Conrady, Alphonse210764
472 Capece, Adolivio209469
473 Mondaini, Giulio Cesare209469
474 Arraya, Jorge208766

These ratings, calculated as of June 30, 1966, incorporate all games (against rated opponents) played in the time between July 1, 1965 and June 30, 1966, along with the ratings that were already calculated as of June 30, 1965. 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 June 30, 1966. This represents the player's estimated strength on July 1, 1966.

+/- 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 July 1, 1966. The +/- value represents the standard deviation of that estimate; the player's true strength on July 1, 1966 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 July 1, 1966. 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 June 30, 1966. 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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