< October 31, 1987     Back to date list    December 31, 1987 >

Top 10 active players as of November 30, 1987

  #  

Player Rating +/-
1 Kasparov, Garry K282748
2 Karpov, Anatoly E277548
3 Timman, Jan H271947
4 Beliavsky, Alexander G269449
5 Korchnoi, Viktor L268947
6 Tal, Mikhail267948
7 Jussupow, Artur M267750
8 Vaganian, Rafael A267250
9 Ehlvest, Jaan266751
10 Naumkin, Igor266659

About these ratings

Top 500 active players as of November 30, 1987

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28274871.3% #224.63
2 Karpov, Anatoly E27754819.0% #436.52
3 Timman, Jan H2719472.5% #1535.95
4 Beliavsky, Alexander G2694490.9% #2633.95
5 Korchnoi, Viktor L2689470.6% #2956.69
6 Tal, Mikhail2679480.4% #3551.06
7 Jussupow, Artur M2677500.4% #3727.80
8 Vaganian, Rafael A2672500.3% #4136.12
9 Ehlvest, Jaan2667510.3% #4525.13
10 Naumkin, Igor2666590.8% #4922.30
11 Portisch, Lajos2665480.2% #4450.65
12 Short, Nigel D2665470.2% #4422.50
13 Gelfand, Boris2661520.3% #5019.43
14 Nikolic, Predrag2660490.1% #5027.22
15 Ljubojevic, Ljubomir2659480.1% #4937.08
16 Hübner, Robert2657490.2% #5139.07
17 Sax, Gyula2655500.1% #5336.45
18 Salov, Valery B2655500.2% #5423.51
19 Psakhis, Lev B2654480.1% #5329.00
20 Ribli, Zoltán2651500.1% #5736.23
21 Tukmakov, Vladimir B2648490.1% #5941.71
22 Andersson, Ulf2647490.1% #6036.43
23 Khalifman, Alexander2646500.1% #6221.87
24 Gurevich, Mikhail N2646480.1% #6028.77
25 Eingorn, Viacheslav S2646500.1% #6331.01
26 Seirawan, Yasser2645490.1% #6327.68
27 Dolmatov, Sergey V2642510.1% #6728.78
28 Polugaevsky, Lev A263650 #7153.03
29 Gavrikov, Victor N2636500.1% #7130.34
30 Spassky, Boris V263649 #7050.83
31 Chernin, Alexander M263649 #7027.73
32 Speelman, Jonathan S263549 #7131.16
33 Balashov, Yury S263550 #7238.72
34 Kharitonov, Andrey Y2635520.1% #7328.65
35 Smirin, Ilia2633560.1% #7719.86
36 Vyzmanavin, Alexey263151 #7727.91
37 Vladimirov, Evgeny Y2630590.2% #8330.86
38 Sokolov, Andrey Y262749 #8024.69
39 Gulko, Boris F262650 #8040.81
40 Malaniuk, Vladimir P262449 #8230.36
41 Romanishin, Oleg M262448 #8235.89
42 Lerner, Konstantin Z262350 #8437.76
43 Dokhoian, Yury262253 #8723.09
44 Nunn, John D M261849 #8832.60
45 Rozentalis, Eduardas261853 #9324.51
46 Hort, Vlastimil261750 #9043.88
47 Ivanchuk, Vassily261353 #9618.70
48 Bareev, Evgeny261250 #9621.02
49 Chandler, Murray G261149 #9627.65
50 Yudasin, Leonid G261050 #9828.31
51 Pintér, József260852 #10134.06
52 Agdestein, Simen260651 #10320.54
53 Smagin, Sergey260450 #10429.23
54 Lputian, Smbat G260448 #10329.79
55 Dorfman, Iosif D260458 #11035.58
56 Sveshnikov, Evgeny E260350 #10637.80
57 Razuvaev, Yury S260150 #10842.14
58 Larsen, Bent259751 #11352.74
59 Yermolinsky, Alex V259554 #11729.63
60 Azmaiparashvili, Zurab A259455 #11827.70
61 Gipslis, Aivars259462 #12450.81
62 Smyslov, Vassily V259351 #11766.68
63 Dvoiris, Semen I259359 #12329.08
64 Pigusov, Evgeny259250 #11826.66
65 Georgiev, Kiril259151 #11922.01
66 Miles, Anthony J258948 #11932.60
67 Anand, Viswanathan258953 #12317.96
68 Christiansen, Larry M258850 #12231.43
69 Murey, Yakov258752 #12446.33
70 Rashkovsky, Nukhim N258651 #12541.62
71 Huzman, Alexander258652 #12625.64
72 Shneider, Aleksandr258358 #13225.52
73 Yurtaev, Leonid258257 #13328.58
74 Chiburdanidze, Maia G257954 #13326.87
75 Torre, Eugenio257950 #13036.07
76 Ubilava, Elizbar E257953 #13437.26
77 Kavalek, Lubomir257954 #13444.31
78 Dreev, Alexey257954 #13418.86
79 Bönsch, Uwe257850 #13229.12
80 Mikhalchishin, Adrian B257851 #13333.03
81 Popovic, Petar257749 #13228.79
82 Dzindzichashvili, Roman Y257760 #14043.57
83 Hansen, Curt257651 #13423.20
84 van der Wiel, John T H257648 #13428.31
85 Ftácnik, Lubomír257550 #13630.08
86 Glek, Igor V257459 #14226.06
87 Kochiev, Alexander257355 #14031.68
88 Vasiukov, Evgeny A257356 #14154.73
89 Panno, Oscar R257360 #14452.70
90 Makarichev, Sergey Y257156 #14334.04
91 Panchenko, Alexander N256852 #14434.15
92 Podgaets, Mikhail Y256867 #15340.35
93 Hjartarson, Jóhann256849 #14224.81
94 Tseshkovsky, Vitaly V256650 #14543.18
95 Kruppa, Yuri256558 #15023.44
96 Bronstein, David I256565 #15563.78
97 Kuzmin, Gennady P256556 #14941.86
98 Fedorowicz, John P256550 #14529.18
99 Darga, Klaus V256472 #15953.77
100 Savon, Vladimir A256470 #15847.18
101 Adorján, András256450 37.66
102 Bagirov, Vladimir K256356 51.29
103 Uhlmann, Wolfgang256351 52.67
104 Arkhipov, Sergey256256 33.44
105 Benjamin, Joel L256250 23.72
106 Ivanov, Igor V256159 40.89
107 Gorelov, Sergey G256160 30.28
108 Karlsson, Lars256151 32.38
109 Neverov, Valery256155 23.44
110 Novikov, Igor A256150 25.52
111 Epishin, Vladimir256057 22.38
112 Goldin, Alexander256055 22.76
113 Sosonko, Gennadi256050 44.53
114 Nogueiras, Jesus255949 28.37
115 Cámpora, Daniel H255952 30.42
116 Velimirovic, Dragoljub255950 45.55
117 Kupreichik, Viktor D255950 38.41
118 Vaisser, Anatoli255854 38.73
119 Suba, Mihai255550 40.50
120 Knaak, Rainer F255350 34.70
121 Gheorghiu, Florin255250 43.65
122 Smejkal, Jan255151 41.69
123 Yakovich, Yuri255152 24.99
124 Cifuentes Parada, Roberto255058 29.94
125 Gligoric, Svetozar255054 64.83
126 Cvitan, Ognjen254951 26.14
127 Sokolov, Ivan254954 19.46
128 Pétursson, Margeir254949 27.79
129 Geller, Efim P254950 62.74
130 Shabanov, Yury F254959 50.05
131 Kengis, Edvins254952 28.63
132 Timoshchenko, Gennady254852 38.59
133 Gufeld, Eduard E254860 51.70
134 Kaidanov, Gregory S254752 28.13
135 Zaichik, Gennady L254651 30.80
136 Olafsson, Helgi254550 31.29
137 Liberzon, Vladimir M254572 50.69
138 Morovic Fernández, Iván E254456 24.68
139 Kurajica, Bojan254355 40.04
140 Oll, Lembit254351 21.60
141 Graf, Alexander254258 25.26
142 Gruenfeld, Yehuda254251 31.76
143 Quinteros, Miguel A254153 39.92
144 Vorotnikov, Vladislav V254074 40.29
145 Kholmov, Ratmir D254059 62.55
146 Dlugy, Maxim254050 21.84
147 Matanovic, Aleksandar254075 57.52
148 Dautov, Rustem253961 22.01
149 Reshevsky, Samuel H253965 76.01
150 Taimanov, Mark E253965 61.81
151 Ekstroem, Roland253865 31.52
152 Kalinitschew, Sergey253761 31.82
153 Marjanovic, Slavoljub253750 32.90
154 Janjgava, Lasha253358 17.57
155 Lobron, Eric253350 27.56
156 Palatnik, Semen A253355 37.68
157 Kudrin, Sergey253250 28.23
158 Guseinov, Aidyn253269 35.91
159 Garcia Palermo, Carlos253051 33.99
160 Browne, Walter S253051 38.89
161 Chekhov, Valery A253052 32.01
162 Rodriguez, Amador252950 31.23
163 Henley, Ron W252969 30.98
164 Greenfeld, Alon252852 23.62
165 Didishko, Vereslav252865 38.64
166 Csom, István252851 47.49
167 Korzubov, Peter252867 25.91
168 Spraggett, Kevin B252752 33.05
169 Inkiov, Ventzislav252751 31.53
170 Kantsler, Boris252757 25.62
171 Petrienko, Vladimir252562 32.72
172 Kindermann, Stefan252449 27.92
173 Sturua, Zurab252470 28.48
174 Kuzmin, Alexey252368 24.73
175 Kovacevic, Vladimir252357 45.68
176 Petrosian, Arshak B252355 33.95
177 deFirmian, Nicholas E252350 30.34
178 Adianto, Utut252359 22.70
179 Byrne, Robert E252359 59.61
180 Barua, Dibyendu252256 21.09
181 Klovans, Janis252260 52.64
182 Alburt, Lev O252151 42.27
183 Lein, Anatoly252155 56.67
184 Wedberg, Tom252055 34.01
185 Mestel, A Jonathan252053 30.71
186 Gaprindashvili, Nona251963 46.57
187 Veingold, Aleksander251974 34.14
188 Arnason, Jon L251950 27.05
189 Nemet, Ivan251873 44.63
190 Ivanov, Alexander V251864 31.58
191 Hulak, Krunoslav251751 36.51
192 Lau, Ralf251551 28.11
193 Groszpeter, Attila251553 27.47
194 Grigorian, Karen A251568 40.23
195 Ghinda, Mihail Viorel251554 38.35
196 Sunye Neto, Jaime251554 30.58
197 Barbero, Gerardo F251556 26.27
198 García Gonzáles, Guillermo251451 33.97
199 London, Dimitri251365 25.02
200 Meduna, Eduard251251 37.22
201 Velikov, Petar251156 36.67
202 Zapata, Alonso251050 29.27
203 Legky, Nikolay A251066 32.63
204 Todorcevic, Miodrag251053 47.05
205 Bischoff, Klaus250951 26.47
206 Root, Douglas250871 24.80
207 Lalic, Bogdan250856 23.73
208 Watson, William N250851 25.62
209 Ivkov, Borislav250654 54.05
210 Barlov, Dragan250651 30.83
211 Nikolac, Juraj250663 55.61
212 Magerramov, Elmar S250666 29.64
213 Aseev, Konstantin N250660 27.11
214 Lukacs, Peter250450 37.39
215 Mokrý, Karel250450 28.81
216 Rogers, Ian250350 27.43
217 Illescas Cordoba, Miguel250255 21.98
218 Tringov, Georgy P250259 50.73
219 Wilder, Michael250254 25.20
220 Lanka, Zigurds250261 27.52
221 Tischbierek, Raj250150 25.18
222 Vitolinš, Alvis250165 41.46
223 Ostermeyer, Peter250162 44.13
224 Moskalenko, Viktor250065 26.98
225 Hazai, Laszlo250051 34.46
226 Faragó, Iván249948 41.66
227 Ivanovic, Božidar249852 41.27
228 Hellers, Ferdinand249854 18.84
229 Mainka, Romuald249763 24.54
230 Loginov, Valery A249755 31.96
231 Plaskett, Jim249651 27.70
232 Pfleger, Helmut249662 44.32
233 Raicevic, Momcilo249663
234 Wolf, Volker249566 30.23
235 Reyes, Juan249567 24.59
236 Donchev, Dimitar I249556 29.36
237 Hebden, Mark249455 29.79
238 Serper, Grigory249358 18.21
239 Schussler, Harry249355 30.43
240 Vukic, Milan249266 44.28
241 Van der Sterren, Paul249250 31.70
242 Govedarica, Radovan249161 39.79
243 Georgiev, Krum249153 29.52
244 Hodgson, Julian M249149 24.35
245 Seret, Jean Luc249160
246 Vogt, Lothar H249052 35.87
247 Fokin, Sergey249070 32.13
248 Joksic, Sinisa248973 47.14
249 Vera, Reynaldo248854 26.90
250 Matulovic, Milan248859 52.47
251 Ermenkov, Evgenij248755 38.17
252 Shamkovich, Leonid A248759 64.50
253 Rukavina, Josip248658 45.00
254 Abramovic, Boško248654 36.79
255 Soppe, Guillermo248569 27.20
256 Klundt, Klaus248570 45.92
257 Foisor, Ovidiu248553 28.65
258 Mednis, Edmar J248559 50.69
259 Hickl, Joerg248451 22.62
260 Schneider, Lars Ake248456
261 Xu Jun248453 25.20
262 Pytel, Krzysztof248368 42.54
263 Keitlinghaus, Ludger248359 22.35
264 Giorgadze, Giorgi248363 23.14
265 Ernst, Thomas248352 27.29
266 Klaric, Zlatko248365 31.10
267 Mnatsakanian, Eduard A248369 48.98
268 Kurtenkov, Atanas248264 24.33
269 Filipenko, Alexander V248175 38.74
270 Stoica, Valentin248161 37.79
271 Cebalo, Mišo248051 42.82
272 Unzicker, Wolfgang248057 62.43
273 Simic, Radoslav248065 39.47
274 Georgadze, Tamaz V247955 40.06
275 Frias, Victor J247971 31.80
276 Ionescu, Constantin247954 29.22
277 Stohl, Igor247951 23.18
278 Jansa, Vlastimil247850 45.01
279 Staniszewski, Piotr247853 21.24
280 Rivas Pastor, Manuel247758 27.38
281 Petrushin, Alexander I247772 40.72
282 Li Zunian247762 29.89
283 Winants, Luc247653 24.91
284 Nikolic, Zivoslav247557 33.96
285 Rohde, Michael A247452 28.26
286 Portisch, Ferenc247363 48.64
287 Belov, Igor247362
288 Ree, Hans247354 43.21
289 Eslon, Jaan247269 35.74
290 Drasko, Milan247253 24.98
291 Birnboim, Nathan247254 37.01
292 Granda Zuńiga, Julio E247052 20.76
293 Andres Mendez, Miguel247063
294 Wirthensohn, Heinz247062 36.57
295 Szabó, László246970 70.70
296 Ostojic, Predrag246970 49.77
297 Rajkovic, Dusan246956 45.45
298 Gurgenidze, Bukhuti I246957 54.05
299 Lechtynsky, Jiri246953 40.01
300 Antunes, Antonio246870 25.82
301 Lombardy, William J246859 49.98
302 Flear, Glenn C246850 28.80
303 Horvath, Jozsef246851 23.30
304 Vaulin, Alexander246769 30.70
305 Gomez Baillo, Jorge H246760 28.61
306 Tempone, Marcelo246773 25.23
307 Ricardi, Pablo246756 25.76
308 Thorsteins, Karl246655 23.13
309 Marin, Mihail246656 22.61
310 Hawelko, Marek246651 28.30
311 Nun, Josef246667 54.36
312 Popchev, Milko246656 23.05
313 Santo Roman, Marc246671 27.21
314 Bukal, Vladimir Sr246658 48.08
315 Sahovic, Dragutin246664 47.31
316 Hecht, Hans-Joachim246670 48.84
317 Mortensen, Erling246553 32.65
318 Espig, Lutz246556 38.90
319 Piesina, Gintautas246568 35.64
320 Řgaard, Leif246458 35.90
321 Gutman, Lev246450 42.18
322 Krasenkow, Michal246464 24.04
323 Piket, Jeroen246456 18.84
324 Jelen, Iztok246472 40.86
325 Helmers, Knut J246467 30.81
326 Valkesalmi, Kimmo246455 26.58
327 Murshed, Niaz246464 21.55
328 Lukin, Andrei M246365 39.26
329 Kosten, Anthony C246354 29.35
330 Nun, Jiri246356 30.34
331 Szekely, Peter246357 32.81
332 Pekarek, Ales246352 25.95
333 Marangunic, Srdjan246266 44.08
334 Ambroz, Jan246260 33.45
335 Dizdar, Goran246254 28.98
336 Yrjola, Jouni246151 28.10
337 Verduga, Denis Homero246057
338 Pribyl, Josef246054 40.13
339 Tseitlin, Mikhail S246068 40.45
340 Renet, Olivier245951 22.94
341 Ziatdinov, Raset245870 28.92
342 Plachetka, Jan245851 42.78
343 Polgar, Zsuzsa245850 18.61
344 Basin, Leonid245870 30.02
345 Sherzer, Alex245862 16.83
346 Khasin, Alexander245761 36.59
347 Sideif Sade, Fikret I245661 35.91
348 Fernandez Garcia, Jose Luis245657 33.57
349 Szmetan, Jorge245662 37.51
350 Kogan, Boris245656
351 Damljanovic, Branko245655 26.45
352 Ardiansyah, Haji245664 35.98
353 Rakic, Tomislav245570 53.05
354 Karpman, Vadim245369 22.55
355 Knezevic, Milorad245351 51.08
356 Pedersen, Erik245363 29.22
357 Ornstein, Axel245157 35.60
358 Semkov, Semko245159 27.75
359 Cramling, Dan245162 28.82
360 Yap, Andronico245060
361 Rechlis, Gad244956 20.82
362 King, Daniel J244952 24.26
363 Lanc, Alois244952 39.78
364 Barbulescu, Dan244957 23.44
365 Gurevich, Dmitry244951 31.22
366 Kremenetsky, Anatoly M244971 48.88
367 Braga, Fernando244960 29.39
368 Veinger, Itzhak244859 49.40
369 Efimov, Igor244870 27.20
370 Sigurjónsson, Gudmundur244856 40.18
371 Renman, Nils Gustaf244761
372 Popov, Luben244773 51.84
373 Zagrebelny, Sergey244675
374 Tisdall, Jonathan D244655 29.26
375 Shtyrenkov, Veniamen244670 29.60
376 Vokác, Marek244658 28.98
377 Janovsky, Sergey244576 27.79
378 Klinger, Josef244552 20.48
379 Sorokin, Maxim244468 19.86
380 Tatai, Stefano244456 49.69
381 Schmidt, Wlodzimierz244450 44.64
382 Schulte, Oliver244465 18.94
383 Radulov, Ivan244455 48.90
384 Kirov Ivanov, Nino244354 42.22
385 Sharif, Mershad244257 35.38
386 Akesson, Ralf244259 26.81
387 Talavera, JC.244169
388 Hertneck, Gerald244153 24.20
389 Hermann, Manfred244165 45.25
390 Kraidman, Yair244169 55.08
391 Kouatly, Bachar244150 29.74
392 Casper, Thomas244053 28.70
393 Kolev, Atanas244068 20.37
394 Cabrilo, Goran244064 29.41
395 Hjorth, Greg244076 24.38
396 Rachels, Stuart244062 18.18
397 Blatny, Pavel244053 19.44
398 Gruenenwald, Joerg243968 22.49
399 Ryskin, Alexander243972 24.88
400 Filipovic, Branko243960 30.15
401 Schlosser, Philipp243967 19.28
402 Bielczyk, Jacek243957 34.77
403 Kallai, Gabor243958 28.77
404 Leski, Marc243866 26.43
405 Sznapik, Aleksander243852 36.80
406 Davies, Nigel R243753 27.33
407 Malisauskas, Vidmantas243756 24.32
408 Kuligowski, Adam243755 31.93
409 Spiridonov, Nikola243756 49.76
410 Trapl, Jindrich243661 45.68
411 Ye Jiangchuan243666 27.03
412 Potts, Alan243667
413 Lalev, Dimitar243670 27.87
414 Handoko, Edhi243562 27.26
415 Gruenberg, Hans Ulrich243558 31.89
416 Spassov, Liuben243556 44.69
417 Rodriguez Vargas, Orestes243562 44.40
418 Reeh, Oliver243460 23.86
419 Horvath, Tamas243458 36.10
420 Womacka, Mathias243473 21.43
421 Jakobsen, Ole243362 45.11
422 Beckemeier, Werner243365 28.12
423 Hug, Werner243357 35.22
424 Meyer, E.243276
425 Wiedenkeller, Michael243154 24.89
426 Filipowicz, Andrzej243160 49.55
427 Schoenthier, Frank243173 29.03
428 Rigo, Janos243163 39.09
429 Manouck, Thierry243175 30.55
430 Atalik, Suat243068 23.14
431 Weidemann, Joerg243072 29.68
432 Imanaliev, Taalaibek243065
433 Matlak, Marek243054 21.69
434 Kristiansen, Jens243054 35.51
435 Wockenfuss, Klaus243059 36.25
436 Benko, Pal C243063 59.37
437 Velickovic, Sasa243073 36.66
438 Sendera, Jaroslaw242969 22.59
439 Trepp, Markus242856
440 Kelecevic, Nedeljko242771 40.72
441 Lengyel, Levente242766 54.46
442 Skembris, Spyridon242759 29.77
443 Bilek, István242765 55.30
444 Martinovic, Slobodan242659 42.35
445 Ochoa de Echaguen, F Javier242659 33.24
446 Nowak, Ignacy242656 38.88
447 Robatsch, Karl242654 59.13
448 Hamann, Svend242673 47.14
449 Ligterink, Gert242653 38.04
450 Liang Jinrong242561 27.52
451 Kuczynski, Robert242552 21.62
452 Motwani, Paul242563 25.46
453 Komarov, Dimitri242574 18.99
454 Bany, Jerzy242553 26.74
455 Ulibin, Mikhail242564 16.50
456 Barczay, Laszlo242457 51.77
457 Schneider, Attila242458 32.63
458 Prandstetter, Eduard242452 38.95
459 Brueckner, Thomas242361 24.34
460 Djuric, Stefan242353 32.34
461 Doncevic, Dario242264 29.88
462 Akhmilovskaya, Elena242267
463 Ost Hansen, Jacob242275
464 Reefschlaeger, Helmut242162 43.64
465 Soltis, Andrew E242162 40.51
466 Luther, Thomas242061 18.07
467 Heinbuch, Detlef242060 26.89
468 Buecker, Peter241970
469 Hernandez, Roman241960 38.02
470 Rubinetti, Jorge A241960 42.66
471 Karsa, Laszlo241863 32.22
472 Lukov, Valentin241858 31.96
473 Pein, Malcolm241860 27.29
474 Jasnikowski, Zbigniew241855 32.55
475 Adams, Michael241863 16.04
476 Diaz, Joaquin C241856 39.40
477 Mariotti, Sergio241767 41.30
478 Scheeren, Peter241761 32.33
479 Horváth, Csaba241755 19.48
480 Garcia, Gildardo241763 33.72
481 Wittmann, Walter241656 39.71
482 Pliester, Leon241664 33.28
483 Gallagher, Joseph G241661 23.57
484 Ghitescu, Theodor241561 53.85
485 Milos, Gilberto241456 24.08
486 Toth, Bela241463 44.61
487 Qi Jingxuan241364 40.06
488 Tashkhodzhaev, A.241373
489 De Wit, Johannes S241373 23.18
490 Maki, Veijo241361 28.97
491 Karolyi, Tibor Jr241353 26.04
492 Litvinov, Vladimir241276 46.37
493 Sanna, Gianlazzaro241273 27.63
494 Pelts, Roman241273 50.72
495 Schoen, Wolfram241258 20.48
496 McCambridge, Vincent241264 27.73
497 Bohm, Hans241169 37.87
498 Shvidler, Eliahu241155 27.94
499 McNab, Colin Anderson241162 26.82
500 Matamoros Franco, Carlos S241063 20.95

These ratings, calculated as of November 30, 1987, incorporate all games (against rated opponents) played in the time between December 1, 1986 and November 30, 1987, along with the ratings that were already calculated as of November 30, 1986. 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 November 30, 1987. This represents the player's estimated strength on December 1, 1987.

+/- 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 December 1, 1987. The +/- value represents the standard deviation of that estimate; the player's true strength on December 1, 1987 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 December 1, 1987. 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 November 30, 1987. 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