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Top 10 active players as of September 30, 1963

  #  

Player Rating +/-
1 Petrosian, Tigran V274150
2 Botvinnik, Mikhail M273253
3 Fischer, Robert J271551
4 Geller, Efim P270650
5 Keres, Paul270150
6 Korchnoi, Viktor L269149
7 Smyslov, Vassily V269051
8 Tal, Mikhail268850
9 Spassky, Boris V268652
10 Stein, Leonid Z266552

About these ratings

All active players as of September 30, 1963

  #  

Player Rating +/- Best? 75%? Age
1 Petrosian, Tigran V27415025.3% #634.29
2 Botvinnik, Mikhail M27325320.9% #752.12
3 Fischer, Robert J27155111.8% #1020.56
4 Geller, Efim P2706508.2% #1138.58
5 Keres, Paul2701507.0% #1247.73
6 Korchnoi, Viktor L2691494.5% #1432.52
7 Smyslov, Vassily V2690514.8% #1442.52
8 Tal, Mikhail2688504.0% #1526.88
9 Spassky, Boris V2686524.4% #1526.67
10 Stein, Leonid Z2665521.8% #2028.88
11 Polugaevsky, Lev A2654511.1% #2328.85
12 Reshevsky, Samuel H2640560.9% #2951.84
13 Najdorf, Miguel2639530.6% #2853.46
14 Antoshin, Vladimir S2637570.9% #3034.38
15 Vasiukov, Evgeny A2633560.6% #3230.57
16 Gligoric, Svetozar2631480.2% #3040.66
17 Kholmov, Ratmir D2624520.3% #3438.38
18 Bronstein, David I2622500.2% #3439.61
19 Boleslavsky, Isaak E2619630.7% #4044.31
20 Taimanov, Mark E2614520.2% #3937.65
21 Olafsson, Fridrik2608530.1% #4128.68
22 Portisch, Lajos2605500.1% #4226.49
23 Schmid, Lothar M2605620.4% #4635.39
24 Ivkov, Borislav260449 #4229.88
25 Averbakh, Yury L2599520.1% #4541.64
26 Evans, Larry M2581590.1% #5831.52
27 Kotov, Alexander A2581710.4% #6450.13
28 Pachmann, Ludek257750 #5739.38
29 Darga, Klaus V257653 #5929.60
30 Unzicker, Wolfgang257556 #6138.26
31 Gipslis, Aivars257554 #6026.64
32 Byrne, Robert E257059 #6635.44
33 Sanguinetti, Raúl C256755 #6630.66
34 Kots, Yury I2566640.1% #7129.80
35 Byrne, Donald256464 #7233.30
36 Panno, Oscar R256354 #6828.54
37 Gufeld, Eduard E256357 #7027.53
38 Benko, Pal C256152 #6835.21
39 Lombardy, William J255763 #7625.81
40 Bagirov, Vladimir K255658 #7527.12
41 Suetin, Alexey S255555 #7436.87
42 Lutikov, Anatoly S255465 #7930.65
43 Tringov, Georgy P255362 #7926.56
44 Larsen, Bent255356 #7628.57
45 Bolbochán, Julio254660 #8343.53
46 Bannik, Anatoly A254360 #8541.81
47 Uhlmann, Wolfgang254250 #8128.50
48 Matanovic, Aleksandar254150 #8233.35
49 Szabó, László254050 #8346.53
50 Furman, Semen A253958 #8742.82
51 Barcza, Gedeon253852 #8552.11
52 Filip, Miroslav253850 #8434.92
53 Pomar Salamanca, Arturo253854 #8632.08
54 Euwe, Machgielis253668 #9562.36
55 Rossolimo, Nicolas253465 #9553.59
56 Pilnik, Herman253457 #9149.73
57 Parma, Bruno253051 #9121.74
58 Simagin, Vladimir P253053 #9244.27
59 Aronin, Lev S253061 #9743.19
60 Bilek, István252751 #9331.13
61 Shianovsky, Vladislav I252664 #10233.77
62 Krogius, Nikolay V252258 #10133.19
63 Cherepkov, Alexander V252174 #11042.91
64 Bisguier, Arthur B252154 #9933.97
65 Trifunovic, Petar252149 #9753.08
66 Donner, Johannes H251751 #10136.23
67 Tolush, Alexander K251570 #11453.41
68 Zaitsev, Alexander N251261 #11128.29
69 Flohr, Salo250770 #12054.88
70 Kavalek, Lubomir250558 #11520.14
71 Mednis, Edmar J250564 #11926.52
72 Lengyel, Levente250455 #11530.30
73 Djuraševic, Božidar250167 #12330.43
74 Lein, Anatoly250170 #12532.51
75 Nei, Iivo250058 #12031.91
76 Matulovic, Milan249855 #12028.30
77 Stĺhlberg, Gideon249758 #12155.68
78 Ghitescu, Theodor249757 #12129.68
79 Nezhmetdinov, Rashid G249671 #13050.78
80 Hort, Vlastimil249654 #12019.72
81 Minic, Dragoljub249554 #12126.57
82 Shamkovich, Leonid A249358 #12640.33
83 Bobotsov, Milko G249254 #12431.99
84 Minev, Nikolay N249154 #12532.73
85 Veresov, Gavriil N249074 #13751.17
86 Khasin, Abram I248966 #13340.62
87 Lilienthal, Andor248966 #13452.40
88 O'Kelly de Galway, Albéric248652 #12852.37
89 Velimirovic, Dragoljub248559 #13221.38
90 Drimer, Dolfi248560 #13328.95
91 Ciocaltea, Victor248454 #13031.70
92 Trapl, Jindrich248362 #13521.52
93 Klovans, Janis248160 #13628.47
94 Udovcic, Mijo248153 #13443.05
95 Kupper, Josef247959 #13731.55
96 Penrose, Jonathan247954 #13529.97
97 Robatsch, Karl247851 #13434.95
98 Padevsky, Nikola B247854 #13630.34
99 Karaklajic, Nikola247657 #13937.60
100 Tarasov, Vitaly G247572 #14740.69
101 Yanofsky, Daniel A247465 38.51
102 Bondarevsky, Igor Z247460 50.38
103 Johannsson, Ingi Randver247364
104 Gurgenidze, Bukhuti I247262 29.87
105 Bukic, Enver247156 25.82
106 Ciric, Dragoljub M247156 27.88
107 Bikhovsky, Anatoly A246863 29.42
108 Díez del Corral, Jesús246765 30.48
109 Eliskases, Erich G246758 50.62
110 Ignatiev, Felix N246269 31.72
111 Damjanovic, Mato246053 36.52
112 Kottnauer, Cenek245966 53.60
113 Fichtl, Jirí245855 42.62
114 Mikenas, Vladas245860 53.45
115 Czerniak, Moshe245756 53.66
116 Schweber, Samuel245654 27.20
117 Sherwin, James T245464 29.92
118 Ujtelky, Maximilián245457 48.44
119 Addison, William G245368 29.83
120 Bouwmeester, Henk B245259 34.04
121 Zakharov, Alexander V245161 19.97
122 Malich, Burkhard G245054 26.83
123 Berliner, Hans Jack245064
124 Dueckstein, Andreas244961 36.16
125 Rabar, Braslav244964 44.01
126 Weinstein, Raymond A244674 22.43
127 Pietzsch, Wolfgang W244353 32.77
128 Nilsson, Zandor244273
129 Maric, Rudolf244172 36.38
130 Guimard, Carlos E244159 50.48
131 Savon, Vladimir A244066 23.01
132 Jansa, Vlastimil243857 20.84
133 Steinmeyer, Robert243868
134 Milev, Zdravko A243862 33.92
135 Lundin, Erik243874 59.24
136 Blatny, Frantisek243763 30.49
137 Rossetto, Héctor D243753 41.06
138 Smederevac, Petar243671 41.09
139 Bertok, Mario243653 34.08
140 Clarke, Peter H243661
141 Fuchs, Reinhart243654 29.01
142 Milic, Borislav243655 37.94
143 Dely, Peter243554 29.23
144 Jiménez Zerquera, Eleazar243453 35.26
145 Enevoldsen, Jens243469 56.02
146 Johansson, Martin243460 45.15
147 Puc, Stojan243468 42.47
148 Janoševic, Dragoljub243357 40.23
149 Alster, Ladislav243265 36.49
150 Liberzon, Vladimir M243262 26.52
151 Lehmann, Heinz Dr243261
152 Vladimirov, Boris T243259 34.37
153 Pfeiffer, Gerhard243171 40.29
154 Bogdanovic, Rajko243159 31.87
155 Haygarth, Michael J243069
156 Novopashin, Arkady243059
157 Bialas, Wolfram242974 28.10
158 Borisenko, Georgy K242972 41.35
159 Johannessen, Svein242956 25.95
160 Ojanen, Kaarle Sakari242868
161 Gheorghiu, Florin242666 19.48
162 Radovici, Corvin242665 31.77
163 Prins, Lodewijk242565 50.67
164 Soos, Bela242473 33.56
165 Aloni, Izak242275
166 Cuéllar Gacharná, Miguel242265 46.86
167 Neikirkh, Oleg N242073 49.56
168 Blau, Max241866 44.77
169 Alexander, Conel H241770 54.45
170 Tröger, Paul241565 50.26
171 Porat, Yosef241468 54.31
172 Forintos, Gyözö V241455 28.17
173 Honfi, Karoly241353 32.92
174 Torán Albero, Román241364 31.97
175 Kolarov, Atanas S241272 29.58
176 Tan Hiong Liong241258
177 Doda, Zbigniew241055 32.61
178 Foguelman, Alberto240956 39.96
179 Roizman, Abram Y240971
180 Van den Berg, Carel Benjamin240958
181 Vesely, Jiri240762
182 Khodos, German L240768
183 Garcia, Raimundo240755 27.34
184 Esposito, Alfredo240463
185 Pirc, Vasja240354 55.77
186 Gonzalez, Juan Carlos240270 46.46
187 Sokolov, Vladimir240257 30.08
188 Drozd, Ryszard240064 29.29
189 Kluger, Guyla240054 49.71
190 Osmanagic, Dusan239962
191 Zinn, Lothar239969 25.53
192 Kieninger, Georg239768 61.32
193 Walther, Edgar239571 32.76
194 Cruz, Raul C239456
195 Nedeljkovic, Aleksandar239473
196 Baumbach, Friedrich239458 28.06
197 Szilágyi, György239163 42.24
198 Popov, Luben239059 27.67
199 Keller, Dieter238967 27.20
200 Ugrinovic, Dragan238873 32.60
201 Sofrevski, Jovan238763 28.12
202 Somogyi, Istvan238767 28.97
203 Korelov, Alexander P238671
204 Bazan, Osvaldo238564 28.95
205 Marovic, Dražen238458 25.71
206 Liebert, Heinz238354 27.35
207 Nemet, Ivan238373 20.46
208 Tomovic, Vasilje238272 57.38
209 Dolezal, Jiri238066 34.62
210 Dubin, Jorge238073
211 Osnos, Viacheslav V237660 28.18
212 van Scheltinga, Tjeerd D237655 49.56
213 Teschner, Rudolf237559 41.62
214 Plater, Kazimierz237561 48.57
215 Brinck Claussen, Bjorn237373
216 Mohrlok, Dieter237363
217 Eising, Johannes237273 28.33
218 Smailbegovic, Hasan237264
219 Barden, Leonhard William237268
220 Haag, Ervin237255 30.72
221 Lukic, Arsenije237067
222 Pogats, Jozsef236960 35.22
223 Gunsberger, A.236965
224 Cobo Arteaga, Eldis236954
225 Barczay, Laszlo236957 27.61
226 Letelier Martner, René236954 48.02
227 Szily, József236960 49.99
228 Littlewood, John Eric236859
229 Kozma, Julius236657 34.33
230 Mihaljcisin, Mihajlo236668 30.61
231 Scafarelli, Francesco236675 29.93
232 German, Eugenio Maciel236665
233 Casas, Fernando236361 37.11
234 Gasztonyi, Endre236362
235 Henneberke, Franciscus236363
236 Smejkal, Jan235965 17.52
237 Zíta, František235968 53.83
238 Bhend, Edwin235771 32.06
239 Langeweg, Kick235753 26.56
240 Lange, Helmut235673 27.42
241 Flesch, Janos235554 29.99
242 Golz, Werner235564
243 Mititelu, Gheorghe235467 28.91
244 Augustin, Josef235163 21.37
245 Sliwa, Bogdan234855 41.65
246 Mnatsakanian, Eduard A234865 24.81
247 Kolvig, Bent234366 30.42
248 Bednarski, Jacek B234361 24.55
249 Golombek, Harry234367 52.58
250 Yudovich, Mikhail Jr234373
251 Bradvarevic, Aleksandar234364
252 Tarnowski, Alfred234369 46.57
253 Buljovcic, Ivan234276 26.75
254 Maedler, Juergen234173 27.01
255 Albareda, Miguel Crues234171
256 Cylwik, Zbigniew233976 27.02
257 Navarovszky, Laszlo233963 30.49
258 Hamann, Svend233761 22.97
259 Perez Perez, Francisco Jose233653
260 Kuijpers, Franciscus Antonius233657
261 Kinzel, Anton233268
262 Blom, Kaj233273
263 Filep, Tibor233162 27.75
264 Grushevsky, Alexander V233073
265 Wexler, Bernardo233059 38.49
266 Puig Pulido, Pedro232968
267 Bielicki, Carlos232855 23.37
268 Nikolic, Stanimir232766 28.68
269 Boutteville, Cesar232768 46.27
270 Herrera, Fernando232771 22.78
271 Mosionzhik, Ilya Samoilovich232776
272 Rocha, Antonio232673 19.30
273 Kozomara, Vladimir232658
274 Lengyel, Laszlo232665 19.22
275 Skold, Kristian232675
276 Thorbergsson, Freysteinn232566
277 Tatai, Stefano232562 25.52
278 Ofstad, Per232565 28.84
279 Luckis, Marcos232567 58.70
280 Olsson, Ake232575 29.41
281 Dunkelblum, Arthur232460 57.44
282 Kramer, Haije232366 45.84
283 Alvarez del Monte, Jose Luis232263
284 Krzisnik, Zvonko232065
285 Pelikán, Jorge231867 57.44
286 Brzozka, Stefan231860
287 Starck, Bodo231672 28.96
288 Garcia, Gilberto231556
289 Purevzhav, S.231473
290 Wade, Robert Graham231455
291 Beni, Alfred231460 40.32
292 De Rooi, Paul231362 35.09
293 Dozsa, Paul231275
294 Boey, Josef231064 29.37
295 Dominguez, Christobal231066
296 Gereben, Ernö231057 56.28
297 Balcerowski, Witold230753 28.14
298 Kinnmark, Ove230765 18.76
299 Camara, Ronald230668
300 Rubinstein, Jose230672
301 Kupka, Slavoj230662 21.23
302 Goldenberg, E.230462
303 Durao, Joaquim230360 32.92
304 Hollis, Adrian Swayne230169
305 Szollosi, Laszlo Sr229864 37.12
306 Zaitsev, Igor A229873 25.34
307 Westerinen, Heikki MJ229763 19.42
308 Mestrovic, Zvonimir229266 18.95
309 Lokvenc, Josef228960 64.41
310 Marsalek, Josef228865 28.54
311 Pavlov, Mircea228562 26.04
312 From, Sigfred228373 37.79
313 Varnusz, Egon228364 29.87
314 Quinones, Oscar Carillo228271
315 Klein, Juan Carlos227961
316 Reinhardt, Enrique H227865 60.50
317 Ostojic, Predrag227766 25.61
318 Koberl, Ferenc227767
319 Hennings, Artur227476 23.22
320 Kanko, Ilkka227465 28.85
321 Raisa, Unto226871 29.53
322 Kahn, Manfred226873 32.54
323 Niemela, Ilmari226773
324 Cafferty, Bernard226673 29.26
325 Van Seters, Frits226668
326 Kovacs, M.226476
327 Tompa, Janos226476 16.42
328 Aitken, James M226365 54.92
329 Ortega, Rogelio226355
330 Fabian, J.226263
331 Gragger, Anton Fritz225964
332 Moehring, Guenther225770 26.84
333 Gojak, Ilija225666 29.36
334 Calero, Ivan225660
335 Scanavino, Eduardo225460
336 Neukirch, Detlef225472 23.14
337 Cadena, Juan225373
338 Llado Lumbera, Jaime225360 47.12
339 Liptay, Laszlo225362 26.24
340 Muehlberg, Siegfried225268
341 Barendregt, Johan Teunis225058
342 Incutto, Carlos225070
343 Zuidema, Coenraad224771
344 Aaron, Manuel224558 27.74
345 Raetsch, Heinz224270
346 De Greif, Boris224156 33.63
347 Philippe, Georges223963
348 Schroeder, Christian223776
349 Hybl, Jaroslav223665 35.55
350 Soby, Frode223376
351 Szilagyi, Peter223267 25.91
352 Fazekas, Stefan223169 65.34
353 Estrada Degrandi, Walter222963
354 Mejic, Petar222976
355 Pugach, Mario222670
356 Georgescu, Vasile Sr222676
357 Crabbendam, H.222475
358 Jovanic222166
359 Heidenfeld, Wolfgang221960
360 Gadia, Olicio221866
361 Calero, C.221573
362 Hartoch, Robert G221470
363 Fabian, Henryk221376
364 Veid, R.221273
365 Bonfioli, Marco220876
366 Beggi, Pierluigi220876 37.05
367 Novak, Zbynek220668
368 Csulits, Anton220172 21.49
369 Fronczek, Henryk219862
370 Borloy, Karoly219776 41.68
371 Kovács, Zoltán219367 19.44
372 Kool, Gerard J219270
373 Hindle, Owen M219071 23.54
374 Kampelmacher, M.218770
375 Gonzalez, G.218470
376 Paoli, Enrico218458 55.71
377 Ankerst, Marjan218176 20.78
378 Siero217870
379 Marcussi, Bartolome217559
380 Silva Nazzari, Roberto217570 23.85
381 Mazzoni, Guy217465 29.01
382 Garcia, Horacio217471
383 Etcheverry, E.217267
384 Trincardi, Tullio217076 27.52
385 Broderman, J.217061
386 Ozsvath, Andras216367 34.11
387 Weber, Gerhard216276 29.48
388 Geissert, Eberhard216276
389 Suarez, JM.215971
390 Lutovac, Maksim215766
391 Masic, Ljubomir215766 27.23
392 Gershman, J.215373
393 Csanadi215276
394 Felmeri, Janos215276 29.90
395 Espinoza, Carlos215172
396 Simek, J.214168
397 Nebreda213671
398 Siveri, Armando213368
399 Sapi, Laszlo212467 28.53
400 Bakos, S.212276
401 Figueroa, Eduardo212071
402 Amado, Claudio211868
403 Lopez, Mario D211673
404 Vergara, Alejandro211673
405 Fricker, Jean210776
406 Bratoszewski, Jerzy209476

These ratings, calculated as of September 30, 1963, incorporate all games (against rated opponents) played in the time between October 1, 1962 and September 30, 1963, along with the ratings that were already calculated as of September 30, 1962. 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 September 30, 1963. This represents the player's estimated strength on October 1, 1963.

+/- 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 October 1, 1963. The +/- value represents the standard deviation of that estimate; the player's true strength on October 1, 1963 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 October 1, 1963. 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 September 30, 1963. 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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