< June 30, 1979     Back to date list    October 31, 1979 >

Top 10 active players as of August 31, 1979


Top 500 active players as of August 31, 1979

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27955052.2% #328.27
2 Korchnoi, Viktor L27624921.7% #548.44
3 Tal, Mikhail2731498.5% #1042.81
4 Portisch, Lajos2712504.3% #1642.41
5 Polugaevsky, Lev A2696502.1% #2144.78
6 Petrosian, Tigran V2684501.3% #2650.21
7 Tseshkovsky, Vitaly V2682501.2% #2734.93
8 Spassky, Boris V2680501.0% #2842.59
9 Vaganian, Rafael A2665500.5% #3627.87
10 Timman, Jan H2665480.4% #3527.71
11 Ljubojevic, Ljubomir2664490.5% #3728.83
12 Mecking, Henrique2650641.1% #5227.61
13 Kasparov, Garry K2647540.4% #4916.38
14 Balashov, Yury S2645510.2% #4930.47
15 Larsen, Bent2644490.1% #4944.49
16 Vasiukov, Evgeny A2642560.3% #5446.49
17 Geller, Efim P2641510.2% #5254.50
18 Dolmatov, Sergey V2641570.3% #5520.53
19 Hübner, Robert2640500.1% #5230.82
20 Hort, Vlastimil2640480.1% #5135.64
21 Andersson, Ulf2638480.1% #5328.18
22 Ribli, Zoltán2638500.1% #5427.98
23 Beliavsky, Alexander G2637500.1% #5525.71
24 Lerner, Konstantin Z2637570.3% #5829.51
25 Romanishin, Oleg M2636500.1% #5527.64
26 Smyslov, Vassily V2633510.1% #5958.44
27 Gheorghiu, Florin2632500.1% #5835.40
28 Sveshnikov, Evgeny E2631500.1% #5929.55
29 Tukmakov, Vladimir B2629500.1% #6033.46
30 Kholmov, Ratmir D2627560.2% #6554.30
31 Gulko, Boris F2625510.1% #6532.56
32 Kavalek, Lubomir262051 #6936.06
33 Savon, Vladimir A2620530.1% #7038.92
34 Smejkal, Jan261850 #6933.44
35 Sax, Gyula261550 #7228.20
36 Krogius, Nikolay V2613710.5% #8549.11
37 Ivanov, Igor V2612640.2% #8332.65
38 Unzicker, Wolfgang260955 #7954.18
39 Kuzmin, Gennady P260950 #7733.62
40 Gufeld, Eduard E260856 #8243.45
41 Gligoric, Svetozar260550 #8056.58
42 Rashkovsky, Nukhim N260356 #8533.37
43 Bagirov, Vladimir K260351 #8343.04
44 Palatnik, Semen A2602610.1% #9029.43
45 Dvoretsky, Mark I2602630.1% #9231.73
46 Bronstein, David I260254 #8655.53
47 Dorfman, Iosif D260051 #8527.33
48 Kochiev, Alexander259651 #9023.43
49 Dzindzichashvili, Roman Y259552 #9035.32
50 Sanguinetti, Raúl C2595670.2% #10146.58
51 Razuvaev, Yury S259451 #9233.88
52 Kurajica, Bojan259354 #9531.79
53 Gipslis, Aivars259058 #9942.56
54 Mikhalchishin, Adrian B259052 #9524.79
55 Browne, Walter S258949 #9530.64
56 Parma, Bruno258854 #9837.67
57 Sosonko, Gennadi258749 #9736.29
58 Tarjan, James E258554 #10227.53
59 Psakhis, Lev B258459 #10520.76
60 Panno, Oscar R258352 #10244.46
61 Georgadze, Tamaz V258353 #10231.81
62 Miles, Anthony J258148 #10124.36
63 Liberzon, Vladimir M258053 #10642.44
64 Szabó, László257868 #11762.45
65 Chekhov, Valery A2575670.1% #11823.76
66 Makarichev, Sergey Y257454 #11125.79
67 Antoshin, Vladimir S2574670.1% #12050.30
68 Kudriashov, Anatoly A2571730.1% #12737.37
69 Uhlmann, Wolfgang257051 #11344.42
70 Knaak, Rainer F256850 #11526.46
71 Olafsson, Fridrik256853 #11744.60
72 Ivkov, Borislav256852 #11645.80
73 Zakharov, Alexander V2567700.1% #12935.89
74 Zaitsev, Igor A256662 #12341.26
75 Taimanov, Mark E256655 #11953.57
76 Tringov, Georgy P256660 #12242.48
77 Grigorian, Karen A256656 #12031.98
78 Suetin, Alexey S256456 #12352.79
79 Csom, István256250 #12039.25
80 Luczak, Andrzej256054 #12530.74
81 Pfleger, Helmut255855 #12836.07
82 Matanovic, Aleksandar255757 #12949.27
83 Pachmann, Ludek255757 #12955.30
84 Alburt, Lev O255653 #12834.03
85 Nemet, Ivan255658 #13136.38
86 Lein, Anatoly255351 #12948.43
87 Tseitlin, Mikhail S255354 #13132.21
88 Timoshchenko, Gennady255352 #12930.34
89 Byrne, Robert E255352 #13051.36
90 Lombardy, William J255155 #13341.74
91 Kupreichik, Viktor D255054 #13430.16
92 Ubilava, Elizbar E254968 #14329.01
93 Darga, Klaus V254873 #14645.52
94 Rogoff, Kenneth S254862 #14126.44
95 Zaltsman, Vitaly F254771 #14737.84
96 Panchenko, Alexander N254656 #13925.90
97 Nikolac, Juraj254554 #13847.36
98 Kapengut, Albert Z254459 #14135.16
99 Vokác, Marek254374 #15120.73
100 Evans, Larry M254368 #14847.44
101 Veingold, Aleksander254161 25.88
102 Adorján, András254150 29.42
103 Matulovic, Milan254156 44.22
104 Klovans, Janis254163 44.39
105 Bukic, Enver254054 41.75
106 Knezevic, Milorad254053 42.83
107 Najdorf, Miguel253954 69.38
108 Stean, Michael F253850 25.98
109 Filip, Miroslav253861 50.84
110 Vogt, Lothar H253650 27.62
111 Vitolinš, Alvis253659 33.21
112 Reshevsky, Samuel H253357 67.76
113 Platonov, Igor V253170 45.62
114 Shamkovich, Leonid A253053 56.25
115 Nei, Iivo252958 47.83
116 Ivanov, Alexander V252857 23.33
117 Ree, Hans252650 34.95
118 Nunn, John D M252553 24.35
119 Velimirovic, Dragoljub252553 37.30
120 Jussupow, Artur M252455 19.55
121 Hecht, Hans-Joachim252265 40.59
122 Kaplan, Julio P252260 29.10
123 Petrushin, Alexander I252270 32.47
124 Quinteros, Miguel A252250 31.68
125 Anikaev, Yury251963 31.17
126 Díez del Corral, Jesús251858 46.40
127 Yurtaev, Leonid251860 20.33
128 Torre, Eugenio251752 27.82
129 Zhuravliov, Valerij251769 40.72
130 Peresipkin, Vladimir251660
131 Lputian, Smbat G251661 21.55
132 Gurgenidze, Bukhuti I251565 45.80
133 Averkin, Orest N251567 35.52
134 Grefe, John A251464 31.98
135 Benko, Pal C251458 51.13
136 Vukcevich, Milan R251273
137 Kovacevic, Vladimir251160 37.43
138 Weinstein, Norman251061 28.90
139 Petrosian, Arshak B251061 25.71
140 Sigurjónsson, Gudmundur250852 31.93
141 Radulov, Ivan250854 40.65
142 Hulak, Krunoslav250861 28.27
143 Regan, Kenneth250661 19.96
144 Biyiasas, Peter250555 28.78
145 Vukic, Milan250554 36.03
146 Yuferov, Sergey N250473 33.74
147 Lutikov, Anatoly S250458 46.57
148 Malich, Burkhard G250454 42.76
149 Bleiman, Yaacov250465 31.97
150 Faragó, Iván250449 33.41
151 Kakageldyev, Amanmurad250459 29.68
152 Schneider, Lars Ake250256
153 Moiseev, Oleg L250264 54.32
154 Lukin, Andrei M250272 31.01
155 Mariotti, Sergio250157 33.06
156 Peters, John A250156 28.56
157 Kharitonov, Andrey Y250173 20.41
158 Piasetski, Leon David249963
159 Pintér, József249755 25.81
160 Stoica, Valentin249767 29.54
161 Marangunic, Srdjan249760 35.83
162 Hartston, William R249653 32.05
163 Schmidt, Wlodzimierz249552 36.39
164 Marjanovic, Slavoljub249452 24.65
165 Ftácnik, Lubomír249352 21.83
166 van der Wiel, John T H249356 20.06
167 García Gonzáles, Guillermo249054 25.73
168 Lengyel, Levente248955 46.22
169 Jansson, Borje248870 37.47
170 Rajkovic, Dusan248856 37.21
171 Bilek, István248859 47.05
172 Simic, Radoslav248768 31.23
173 Ungureanu, Emil248766 42.83
174 Seirawan, Yasser248763 19.44
175 Rodriguez, Amador248654 22.97
176 Forintos, Gyözö V248657 44.09
177 Diesen, Mark C248656
178 Prandstetter, Eduard248654 30.71
179 Ghinda, Mihail Viorel248553 30.10
180 Ciocaltea, Victor248456 47.62
181 Christiansen, Larry M248452 23.18
182 Suba, Mihai248353 32.25
183 Wedberg, Tom248258 25.76
184 Robatsch, Karl248058 50.87
185 Zilberstein, Valery I247962 36.38
186 Keene, Raymond247953
187 Marovic, Dražen247756 41.63
188 Donner, Johannes H247753 52.15
189 Soltis, Andrew E247761 32.26
190 Padevsky, Nikola B247763 46.26
191 Bisguier, Arthur B247661 49.89
192 Lechtynsky, Jiri247656 31.77
193 Tatai, Stefano247655 41.44
194 Barczay, Laszlo247551 43.53
195 Inkiov, Ventzislav247557 23.28
196 Ermenkov, Evgenij247553 29.92
197 Lederman, Leon247569 32.27
198 Speelman, Jonathan S247454 22.91
199 Zuckerman, Bernard247464 36.42
200 Gaprindashvili, Nona247358 38.33
201 Kirov Ivanov, Nino247354 33.97
202 Petkevich, Jusefs247362 38.70
203 Commons, Kim S247365 28.11
204 Mednis, Edmar J247359 42.44
205 Piesina, Gintautas247266 27.40
206 Jansa, Vlastimil247151 36.76
207 Calvo Minguez, Ricardo247165 35.85
208 Popov, Luben247156 43.59
209 Sofrevski, Jovan247071 44.04
210 Jelen, Iztok246761 32.62
211 Nikolic, Zivoslav246671 25.72
212 Kraidman, Yair246564 46.83
213 Westerinen, Heikki MJ246453 35.34
214 Plachetka, Jan246351 34.54
215 Szekely, Peter246360 24.56
216 Van Wijgerden, Cornelis246259 29.27
217 Mnatsakanian, Eduard A246266 40.73
218 Karaklajic, Nikola246162 53.52
219 Podgaets, Mikhail Y246174 32.11
220 Hennings, Artur246167 39.14
221 Martinovic, Slobodan246063 34.10
222 Sahovic, Dragutin246053 39.06
223 Vladimirov, Evgeny Y246066 22.61
224 Rytov, Boris245861
225 Hazai, Laszlo245857 26.21
226 Karner, Hillar245766 44.09
227 Hernandez, Roman245753 29.77
228 Gavrikov, Victor N245765 22.09
229 Rath, Ulrik245671 32.68
230 Garcia Martinez, Silvino245656 35.16
231 Espig, Lutz245550 30.65
232 Estrin, Yacov B245575 56.36
233 Vooremaa, Andres245562 35.12
234 Toth, Bela245362 36.37
235 Langeweg, Kick245353 42.48
236 Messing, Hrvoje245365 39.10
237 Spassov, Liuben245253 36.44
238 Vadasz, Laszlo245154 31.59
239 Rubinetti, Jorge A244958 34.42
240 Zaichik, Gennady L244962 22.55
241 Ligterink, Gert244951 29.79
242 Antunac, Goran244973 34.37
243 Gutman, Lev244959 33.92
244 Mestel, A Jonathan244953 22.47
245 Portisch, Ferenc244856 40.39
246 Raicevic, Vladimir244758 30.33
247 Ciric, Dragoljub M244766 43.80
248 Rogulj, Branko244666 28.08
249 Hug, Werner244557 26.97
250 Szmetan, Jorge244553 29.26
251 Gerusel, Mathias244462 41.57
252 Kozlov, V.244476
253 Sunye Neto, Jaime244259 22.33
254 Minev, Nikolay N244272 48.65
255 Kristiansen, Jens244157 27.27
256 Lukacs, Peter244152 29.14
257 Groszpeter, Attila244157 19.23
258 Schussler, Harry244153 22.19
259 Damjanovic, Mato244160 52.44
260 Minic, Dragoljub244074 42.49
261 Malevinsky, Alexander A243973 29.51
262 Jakobsen, Ole243956 36.86
263 Godes, Dmitry R243874 40.10
264 Poutiainen, Pertti243872
265 Řgaard, Leif243859 27.65
266 Sydor, Andrzej243873 42.66
267 Mikenas, Vladas243670 69.37
268 Planinc, Albin243654 35.37
269 Gruenfeld, Yehuda243563 23.51
270 Adamski, Jan243552 35.80
271 Bertok, Mario243574 49.99
272 Todorcevic, Miodrag243567 38.81
273 Wirthensohn, Heinz243461 28.32
274 Bönsch, Uwe243352 20.87
275 Mestrovic, Zvonimir243371 34.87
276 Schweber, Samuel243360 43.12
277 Kuijpers, Franciscus Antonius243370
278 Nogueiras, Jesus243364 20.12
279 Garcia, Raimundo243268 43.26
280 Pomar Salamanca, Arturo243262 47.99
281 Ghitescu, Theodor243255 45.60
282 Castro Rojas, Oscar Humberto243259 26.31
283 Ivanovic, Božidar243253 33.02
284 Hamann, Svend243163 38.89
285 Pribyl, Josef243153 31.88
286 Qi Jingxuan243156 31.81
287 Matera, Salvatore Joseph243164
288 Dely, Peter243062 45.15
289 Liebert, Heinz243060 43.27
290 Ornstein, Axel243057 27.35
291 Spiridonov, Nikola243057 41.51
292 Doda, Zbigniew243069 48.53
293 Sideif Sade, Fikret I242962 27.66
294 Krnic, Zdenko242868 31.91
295 Sznapik, Aleksander242852 28.56
296 Rukavina, Josip242863 36.76
297 Eolian, Levon S242873 19.95
298 Popov, Nikolay242867
299 Balinas, Rosendo Carrean242759
300 Ostojic, Predrag242758 41.53
301 Borik, Otto242665 31.93
302 Mascarinas, Rico242664 26.50
303 Botterill, George Steven242655
304 Barle, Janez242656 27.44
305 Bohm, Hans242552 29.63
306 Flesch, Janos242570 45.91
307 Velikov, Petar242365 28.42
308 Donoso Velasco, Pedro H242367 35.51
309 Sloth, Jorn242371 34.98
310 Tompa, Janos242255 32.34
311 Rocha, Antonio242162 35.22
312 Magerramov, Elmar S242170 21.39
313 Trapl, Jindrich242160 37.44
314 Skrobek, Ryszard242057 28.16
315 Georgiev, Krum242071 21.27
316 Honfi, Karoly242063 48.84
317 Cvetkovic, Srdjan241962 33.51
318 Augustin, Josef241954 37.29
319 Ruderfer, Mark B241975
320 Kuligowski, Adam241952 23.69
321 Eslon, Jaan241972 27.49
322 Kagan, Shimon241956 37.40
323 Kaiumov, Dmitry D241974 30.51
324 Haygarth, Michael J241975
325 Biriescu, Ioan241874 25.84
326 Littlewood, Paul E241758 23.62
327 Popovic, Petar241765 20.55
328 Hase, Juan Carlos241561
329 Balshan, Amikam241560
330 Gofshtein, Leonid D241573 26.36
331 Bellin, Robert241559 27.17
332 Chiburdanidze, Maia G241459 18.62
333 Garcia, Gildardo241459 25.48
334 Williams, Arthur Howard241371
335 Strauss, David J241365 33.07
336 Rossetto, Héctor D241369 56.97
337 Bednarski, Jacek B241360 40.47
338 Pytel, Krzysztof241264 34.29
339 Banas, Jan241255 32.24
340 Littlewood, John Eric241269
341 Emma, Jaime J241257 41.62
342 Brinck Claussen, Bjorn241266
343 Taulbut, Shaun M241258 21.64
344 Janoševic, Dragoljub241158 56.15
345 Bohosjan, Sarkis241161 38.43
346 Kaufman, Larry C241170 31.79
347 Grinberg, Ricardo241166 31.63
348 Djuric, Stefan241162 24.10
349 Webb, Simon241158 30.22
350 Kestler, Hans-Günter240970 39.72
351 Hoi, Carsten240957 22.62
352 Hausner, Ivan240860 27.38
353 Vilela, Jose Luis240753 26.45
354 Bronstein, Luis240660 33.25
355 Nicevski, Risto240658 34.18
356 Rodriguez Vargas, Orestes240561 36.16
357 Watson, John L240461 27.98
358 Bellon Lopez, Juan Manuel240355 29.31
359 Zichichi, Alvise240375 41.16
360 Enklaar, Bertus F240262
361 Zwaig, Arne240273
362 Schinzel, Wladyslaw240254 36.28
363 Meyer, E.240168
364 Sisniega, Marcel240062 20.09
365 Rigo, Janos240056 30.84
366 Iskov, Gert240063 31.09
367 Bradford, Joseph M239968 28.83
368 Horner, Jeff239974 30.02
369 Zilberman, Nathan R239872 39.33
370 Joksic, Sinisa239866 38.88
371 Soos, Bela239672 49.48
372 Morris, Walter D239562 20.99
373 Rohde, Michael A239564 20.01
374 Haik, Aldo239561 26.86
375 Chandler, Murray G239557 19.41
376 Van der Sterren, Paul239553 23.46
377 Swic, Waldemar239559 26.47
378 Butnorius, Algimantas239574 32.78
379 Meduna, Eduard239456 28.97
380 Evans, Larry D239475
381 Franklin, Michael J239469 48.58
382 Pokojowczyk, Jerzy239455 30.53
383 Law, Andrew P239365 29.14
384 Pritchett, Craig William239268
385 Neckar, Lubomir239261 29.08
386 Ilievski, Dimitar239271 38.02
387 Plaskett, Jim239264 19.45
388 Debarnot, Roberto239165 32.07
389 Fedder, Steen239164 28.21
390 Bukal, Vladimir Sr239068 39.83
391 Cuasnicu, Oscar239075 36.85
392 Huss, Andreas238970 28.87
393 Taylor, Timothy238965 26.56
394 Deze, Anton238969
395 Garcia Padron, Jose238967 21.44
396 Hartoch, Robert G238857
397 Lieb, Harald238865 44.68
398 Filipowicz, Andrzej238767 41.30
399 Dzuban, Oleg I238771
400 Bojkovic, Slobodan238766 34.10
401 Hebert, Jean238667 21.80
402 Spacek, Petr238672 25.51
403 Cappello, Renato238660
404 Peev, Peicho Chonev238663 39.41
405 Dobosz, Henryk238666 26.45
406 Whiteley, Andrew J238566 32.23
407 Sibarevic, Milenko238561 34.47
408 Jamieson, Robert Murray238566
409 Pétursson, Margeir238557 19.54
410 Vaisman, Volodia238567 41.68
411 Lombard, Andre238462 28.94
412 Cuartas, Carlos238469 39.04
413 Hesse, Peter238360 34.92
414 Bielczyk, Jacek238257 26.52
415 Taruffi, Daniele238174 20.98
416 Arnason, Jon L238155 18.80
417 Ilic, Zoran238175 16.08
418 Moehring, Guenther238153 42.77
419 Pavlov, Mircea238064 41.96
420 Franco Ocampos, Zenon237866 23.30
421 Lau, Ralf237863 19.86
422 Formanek, Edward W237864 37.32
423 Sikora Lerch, Jan237855
424 Rajna, George237765 32.55
425 Ambroz, Jan237766 25.20
426 Orso, Miklos237660 23.23
427 Horvath, Tamas237661 27.85
428 Visier Segovia, Fernando237564 36.58
429 Mortensen, Erling237464 24.40
430 Szymczak, Zbigniew237460 27.66
431 Kopec, Danny237373 25.51
432 Fedorowicz, John P237255 20.92
433 Van Riemsdijk, Herman C237254 31.01
434 Goodman, David SC237266
435 Akvist, Hakan237270 37.84
436 Petran, Pal237259 32.95
437 Segal, Alexandru Sorin237256 31.90
438 Helmers, Knut J237160 22.57
439 Buljovcic, Ivan237167 42.68
440 Cooper, John Grantley237167
441 Bouaziz, Slim236963 29.37
442 Filguth, Rubens A236859 23.44
443 Olafsson, Helgi236757 23.04
444 Fries Nielsen, Jens Ove236762 19.52
445 Sarapu, Ortvin236671 55.61
446 Tischbierek, Raj236367 16.93
447 Kirpichnikov, Vladimir S236373
448 Hoelzl, Franz236260 33.40
449 Szilágyi, György236266 58.16
450 Mihaljcisin, Mihajlo236174 46.53
451 Birnboim, Nathan236068 28.76
452 Basman, Michael J236066 33.46
453 Shpilker, Boris236076 23.29
454 Cramling, Dan236067 20.57
455 Lanc, Alois235872 31.54
456 Anelli, Antonio235770 35.30
457 Jamroz, Zbigniew235663 45.22
458 Rantanen, Yrjo A235657 29.36
459 Sapi, Laszlo235360 44.45
460 Coudari, Camille235373 28.09
461 Van der Vliet, Fredrik235260
462 Steiner, Drako235271
463 Kaiszauri, Konstanty235260 26.84
464 Trois, Francisco RT235156
465 Rosenlund, Thorbjorn235171 28.20
466 Cámpora, Daniel H235164 22.17
467 Garcia Palermo, Carlos235060 25.75
468 Cebalo, Mišo234976 34.57
469 Bjelajac, Milan234771 31.46
470 Kovacs, Laszlo M234755 40.90
471 Wahlbom, Magnus234671 34.29
472 Day, Lawrence A234663 30.58
473 Fichtl, Jirí234574 58.54
474 Karlsson, Lars234465 24.14
475 Tisdall, Jonathan D234470 21.01
476 Przewoznik, Jan234463 21.95
477 Duric, Slavko234376 25.28
478 Despotovic, Momcilo234369 31.49
479 Ristic, Nenad234369 20.78
480 Barreras, Alberto234366 28.40
481 Lanka, Zigurds234271 19.28
482 Tichy, Vladimir234262 32.91
483 Frias, Victor J234165 23.56
484 Danner, Georg234167 32.84
485 Zapata, Alonso234065 21.03
486 Gruchacz, Robert233870 25.75
487 Hess, Ralf233771 35.43
488 Wagman, Stuart233769 60.30
489 Bernat, Miguel233562 21.95
490 deFirmian, Nicholas E233567 22.10
491 Goldenberg, Richard233574 31.78
492 Lehmann, Heinz Dr233471
493 Bernard, Ryszard233465 35.03
494 Liu Wenzhe233376 38.89
495 Witkowski, Stefan233258 47.92
496 Odendahl, Steven M233265 19.84
497 Baljon, Christofoor233256 26.18
498 Franzen, Jozef233163 33.57
499 Kelecevic, Nedeljko233166 32.47
500 Borm, Franciscus WM233164

These ratings, calculated as of August 31, 1979, incorporate all games (against rated opponents) played in the time between September 1, 1978 and August 31, 1979, along with the ratings that were already calculated as of August 31, 1978. 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 August 31, 1979. This represents the player's estimated strength on September 1, 1979.

+/- 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 September 1, 1979. The +/- value represents the standard deviation of that estimate; the player's true strength on September 1, 1979 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 September 1, 1979. 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 August 31, 1979. 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.

Back to top

Home