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Top 10 active players as of June 30, 1987


Top 500 active players as of June 30, 1987

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28384878.8% #124.21
2 Karpov, Anatoly E27714814.2% #436.10
3 Timman, Jan H2710471.3% #1835.54
4 Beliavsky, Alexander G2699490.9% #2433.54
5 Tal, Mikhail2691480.5% #2750.64
6 Jussupow, Artur M2687490.5% #3027.38
7 Ljubojevic, Ljubomir2681480.3% #3336.66
8 Hübner, Robert2678490.3% #3438.65
9 Psakhis, Lev B2670480.2% #4028.59
10 Vaganian, Rafael A2669490.2% #4235.71
11 Korchnoi, Viktor L2667470.2% #4256.27
12 Polugaevsky, Lev A2663510.2% #4752.61
13 Seirawan, Yasser2662490.1% #4727.27
14 Short, Nigel D2662470.1% #4622.08
15 Portisch, Lajos2659480.1% #4850.24
16 Tukmakov, Vladimir B2656490.1% #5141.29
17 Salov, Valery B2653510.1% #5423.09
18 Eingorn, Viacheslav S2652500.1% #5530.60
19 Sax, Gyula2652490.1% #5436.03
20 Nikolic, Predrag2651510.1% #5626.80
21 Khalifman, Alexander2649500.1% #5821.45
22 Ehlvest, Jaan2649520.1% #5924.71
23 Andersson, Ulf264649 #6036.01
24 Speelman, Jonathan S2645490.1% #6030.74
25 Gurevich, Mikhail N2645490.1% #6028.36
26 Sokolov, Andrey Y2645490.1% #6124.28
27 Ribli, Zoltán2644490.1% #6135.81
28 Balashov, Yury S2640500.1% #6738.30
29 Miles, Anthony J263748 #6732.19
30 Spassky, Boris V263449 #7050.42
31 Pintér, József263452 #7333.64
32 Dolmatov, Sergey V263250 #7328.36
33 Chernin, Alexander M263249 #7327.31
34 Romanishin, Oleg M263248 #7335.47
35 Lputian, Smbat G262549 #7929.38
36 Gavrikov, Victor N262250 #8329.91
37 Nunn, John D M262049 #8432.18
38 Vladimirov, Evgeny Y2618590.1% #9430.44
39 Agdestein, Simen261851 #8820.12
40 Gulko, Boris F261851 #8840.39
41 Vyzmanavin, Alexey261452 #9227.49
42 Malaniuk, Vladimir P261449 #9129.94
43 Lerner, Konstantin Z261250 #9437.34
44 Christiansen, Larry M261151 #9631.01
45 Kuzmin, Gennady P261057 #10041.45
46 Smagin, Sergey261051 #9628.81
47 Gelfand, Boris2607630.1% #10819.02
48 Hort, Vlastimil260750 #9943.47
49 Kharitonov, Andrey Y260555 #10528.24
50 Bareev, Evgeny260551 #10220.61
51 Huzman, Alexander260254 #10725.22
52 Naumkin, Igor2602750.2% #12221.89
53 Dokhoian, Yury260254 #10822.68
54 Larsen, Bent260050 #10652.32
55 Dorfman, Iosif D260057 #11235.16
56 Dvoiris, Semen I259957 #11228.66
57 Georgiev, Kiril259951 #10921.59
58 Chandler, Murray G259749 #10927.24
59 Smyslov, Vassily V259750 #10966.27
60 Rozentalis, Eduardas259656 #11524.09
61 Azmaiparashvili, Zurab A259552 #11327.29
62 Mikhalchishin, Adrian B259552 #11432.62
63 Sveshnikov, Evgeny E259450 #11337.38
64 Yermolinsky, Alex V259455 #11629.22
65 Smirin, Ilia259270 #12919.44
66 Yurtaev, Leonid259259 #12128.16
67 Ubilava, Elizbar E258951 #11936.84
68 Kupreichik, Viktor D258950 #11937.98
69 Razuvaev, Yury S258750 #12141.72
70 Adorján, András258450 #12337.25
71 Rashkovsky, Nukhim N258351 #12541.20
72 Makarichev, Sergey Y258256 #12933.62
73 Dzindzichashvili, Roman Y258257 #13143.15
74 Vasiukov, Evgeny A258059 #13454.32
75 Geller, Efim P258051 #12962.33
76 Kruppa, Yuri257956 #13423.02
77 Pigusov, Evgeny257951 #12926.25
78 Gipslis, Aivars257970 #14250.39
79 Panchenko, Alexander N257955 #13333.73
80 Ftácnik, Lubomír257849 #12929.67
81 Hansen, Curt257851 #13122.78
82 Panno, Oscar R257765 #14252.29
83 Nogueiras, Jesus257750 #13227.95
84 Torre, Eugenio257650 #13335.65
85 Kavalek, Lubomir257652 #13443.89
86 Kengis, Edvins257453 #13628.22
87 Kochiev, Alexander257355 #13931.26
88 Novikov, Igor A257251 #13725.10
89 Tarjan, James E257266 #14735.36
90 Popovic, Petar257150 #13728.38
91 Zaichik, Gennady L257152 #13930.38
92 Ivanov, Igor V257161 #14540.48
93 Podgaets, Mikhail Y257162 #14639.93
94 Goldin, Alexander257155 #14122.34
95 Chiburdanidze, Maia G257153 #14026.45
96 Marjanovic, Slavoljub257050 #13832.48
97 van der Wiel, John T H257048 #13727.89
98 Yudasin, Leonid G256950 #13927.89
99 Murey, Yakov256953 #14145.91
100 Arkhipov, Sergey256754 #14333.02
101 Glek, Igor V256659 25.65
102 Todorcevic, Miodrag256361 46.64
103 Gheorghiu, Florin256350 43.23
104 Dreev, Alexey256357 18.44
105 Gorelov, Sergey G256257 29.87
106 Fedorowicz, John P256250 28.76
107 Suba, Mihai256249 40.08
108 Gligoric, Svetozar256155 64.41
109 Graf, Alexander256059 24.85
110 Karlsson, Lars255851 31.96
111 Sosonko, Gennadi255850 44.12
112 Lobron, Eric255750 27.15
113 Timoshchenko, Gennady255554 38.17
114 Benjamin, Joel L255550 23.30
115 Alburt, Lev O255351 41.86
116 Hjartarson, Jóhann255350 24.39
117 Shabanov, Yury F255259 49.63
118 Bagirov, Vladimir K255156 50.87
119 Olafsson, Helgi255050 30.87
120 Cámpora, Daniel H255053 29.99
121 Uhlmann, Wolfgang254951 52.25
122 Kantsler, Boris254958 25.20
123 Tseshkovsky, Vitaly V254851 42.76
124 Shneider, Aleksandr254861 25.11
125 Korzubov, Peter254767 25.49
126 Garcia Palermo, Carlos254750 33.58
127 Cvitan, Ognjen254651 25.72
128 Knaak, Rainer F254450 34.29
129 Kaidanov, Gregory S254453 27.72
130 Reshevsky, Samuel H254364 75.59
131 Ivanchuk, Vassily254355 18.28
132 Gufeld, Eduard E254360 51.28
133 Yakovich, Yuri254351 24.58
134 Bönsch, Uwe254351 28.71
135 Palatnik, Semen A254357 37.26
136 Anand, Viswanathan254255 17.55
137 Osnos, Viacheslav V254270 51.93
138 Arnason, Jon L254251 26.63
139 Kholmov, Ratmir D254257 62.13
140 Smejkal, Jan254150 41.27
141 Quinteros, Miguel A254153 39.51
142 Neverov, Valery254054 23.02
143 Vaisser, Anatoli254054 38.32
144 Zapata, Alonso254050 28.86
145 Spraggett, Kevin B253952 32.64
146 Rogers, Ian253950 27.02
147 Serper, Grigory253959 17.79
148 Didishko, Vereslav253765 38.22
149 Henley, Ron W253663 30.57
150 Vorotnikov, Vladislav V253569 39.87
151 Taimanov, Mark E253565 61.40
152 Barlov, Dragan253552 30.42
153 Browne, Walter S253552 38.47
154 Chekhov, Valery A253552 31.59
155 Kurajica, Bojan253454 39.62
156 Wedberg, Tom253358 33.59
157 Ekstroem, Roland253264 31.11
158 Epishin, Vladimir253258 21.96
159 Kindermann, Stefan253249 27.51
160 Kuzmin, Alexey253265 24.31
161 Morovic Fernández, Iván E253156 24.27
162 Hulak, Krunoslav253052 36.10
163 Dueball, Juergen252974 42.25
164 Byrne, Robert E252758 59.19
165 Gruenfeld, Yehuda252651 31.34
166 Csom, István252550 47.08
167 Mestel, A Jonathan252552 30.30
168 Groszpeter, Attila252553 27.06
169 García Gonzáles, Guillermo252550 33.56
170 Pétursson, Margeir252549 27.37
171 Petrosian, Arshak B252454 33.54
172 Ivanov, Alexander V252460 31.16
173 Sokolov, Ivan252456 19.05
174 Inkiov, Ventzislav252251 31.11
175 Lukacs, Peter252249 36.97
176 Velimirovic, Dragoljub252151 45.13
177 Dlugy, Maxim252051 21.42
178 Sturua, Zurab251966 28.06
179 Guseinov, Aidyn251863 35.49
180 Velikov, Petar251854 36.25
181 London, Dimitri251863 24.61
182 Greenfeld, Alon251753 23.20
183 Watson, William N251750 25.20
184 Adianto, Utut251660 22.29
185 Kovacevic, Vladimir251656 45.26
186 Gaprindashvili, Nona251659 46.16
187 Kudrin, Sergey251550 27.81
188 Ghinda, Mihail Viorel251554 37.92
189 Grigorian, Karen A251567 39.81
190 Ostermeyer, Peter251559 43.72
191 Lau, Ralf251550 27.70
192 Oll, Lembit251552 21.19
193 Barbero, Gerardo F251457 25.86
194 Nemet, Ivan251371 44.21
195 Birnboim, Nathan251354 36.59
196 Antunes, Antonio251167 25.40
197 Lein, Anatoly251154 56.26
198 Vogt, Lothar H251153 35.45
199 Gomez Baillo, Jorge H250969 28.20
200 Sunye Neto, Jaime250952 30.16
201 Dautov, Rustem250962 21.59
202 Meduna, Eduard250950 36.80
203 Kolarov, Atanas S250869 53.33
204 Veingold, Aleksander250775 33.72
205 Govedarica, Radovan250762 39.38
206 Hazai, Laszlo250751 34.04
207 Nikolac, Juraj250765 55.19
208 Unzicker, Wolfgang250657 62.01
209 Aseev, Konstantin N250656 26.69
210 Loginov, Valery A250658 31.55
211 Hodgson, Julian M250550 23.92
212 Barua, Dibyendu250558 20.67
213 Barbulescu, Dan250456 23.02
214 Mokrý, Karel250450 28.40
215 Ivkov, Borislav250353 53.63
216 Vitolinš, Alvis250362 41.04
217 Ivanovic, Božidar250354 40.85
218 Magerramov, Elmar S250263 29.22
219 Schneider, Lars Ake250257
220 Matulovic, Milan250160 52.05
221 Cebalo, Mišo250051 42.40
222 Cifuentes Parada, Roberto250065 29.52
223 Rodriguez, Amador250051 30.81
224 Illescas Cordoba, Miguel249854 21.57
225 Lalic, Bogdan249859 23.31
226 Klovans, Janis249759 52.22
227 Basin, Leonid249763 29.60
228 Tringov, Georgy P249658 50.31
229 Fokin, Sergey249570 31.71
230 Stohl, Igor249551 22.76
231 Rukavina, Josip249457 44.59
232 Wilder, Michael249454 24.79
233 Lanka, Zigurds249361 27.11
234 Staniszewski, Piotr249354 20.82
235 Georgiev, Krum249352 29.10
236 Faragó, Iván249348 41.24
237 deFirmian, Nicholas E249350 29.92
238 Mednis, Edmar J249262 50.27
239 Pytel, Krzysztof249165 42.12
240 Vukic, Milan249165 43.86
241 Joksic, Sinisa249173 46.72
242 Georgadze, Tamaz V249055 39.64
243 Soppe, Guillermo249069 26.79
244 Abramovic, Boško249053 36.38
245 Hellers, Ferdinand249053 18.42
246 Gurevich, Dmitry249051 30.80
247 Van der Sterren, Paul248850 31.29
248 Bischoff, Klaus248852 26.06
249 Donchev, Dimitar I248854 28.94
250 Shamkovich, Leonid A248858 64.08
251 Plaskett, Jim248851 27.28
252 Yrjola, Jouni248751 27.68
253 Hebden, Mark248755 29.37
254 Kuporosov, Viktor248771 25.76
255 Kalinitschew, Sergey248666 31.41
256 Stoica, Valentin248659 37.37
257 Gofshtein, Leonid D248670 34.19
258 Flear, Glenn C248650 28.38
259 Dizdar, Goran248555 28.57
260 Tischbierek, Raj248451 24.77
261 Seret, Jean Luc248461
262 Gutman, Lev248350 41.76
263 Vera, Reynaldo248353 26.48
264 Simic, Radoslav248364 39.06
265 Filipenko, Alexander V248375 38.32
266 Reyes, Juan248365 24.18
267 Kogan, Boris248356
268 Mnatsakanian, Eduard A248263 48.56
269 Schussler, Harry248253 30.02
270 Franco Ocampos, Zenon248174 31.13
271 Raicevic, Momcilo248164
272 Pfleger, Helmut248160 43.90
273 Tisdall, Jonathan D248160 28.84
274 Foisor, Ovidiu248152 28.23
275 Wirthensohn, Heinz248160 36.15
276 Winants, Luc247953 24.49
277 Xu Jun247953 24.79
278 Hawelko, Marek247952 27.89
279 Hickl, Joerg247954 22.20
280 Ionescu, Constantin247953 28.80
281 Bukal, Vladimir Sr247860 47.66
282 Ernst, Thomas247852 26.87
283 Drasko, Milan247753 24.56
284 Gurgenidze, Bukhuti I247755 53.63
285 Plachetka, Jan247751 42.37
286 Rivas Pastor, Manuel247756 26.96
287 Klaric, Zlatko247764 30.68
288 Popchev, Milko247656 22.63
289 Ziatdinov, Raset247673 28.51
290 Khasin, Alexander247564 36.17
291 Portisch, Ferenc247562 48.22
292 Moskalenko, Viktor247372 26.57
293 Řgaard, Leif247357 35.48
294 Nikolic, Zivoslav247356 33.55
295 Kremenetsky, Anatoly M247274 48.46
296 Lechtynsky, Jiri247253 39.60
297 Andres Mendez, Miguel247263
298 Piket, Jeroen247256 18.42
299 Vaulin, Alexander247169 30.28
300 Knezevic, Milorad247151 50.66
301 Petrushin, Alexander I247066 40.30
302 Belov, Igor247063
303 Szekely, Peter247056 32.39
304 Popov, Luben247067 51.42
305 Jansa, Vlastimil247050 44.59
306 Ree, Hans247053 42.79
307 Hecht, Hans-Joachim246964 48.42
308 Legky, Nikolay A246969 32.22
309 Tatai, Stefano246957 49.27
310 Wolf, Volker246864 29.81
311 Szabó, László246770 70.28
312 Frias, Victor J246769 31.39
313 Ermenkov, Evgenij246754 37.75
314 Helmers, Knut J246663 30.40
315 Spassov, Liuben246556 44.27
316 Reeh, Oliver246561 23.45
317 Lombardy, William J246559 49.57
318 Pekarek, Ales246552 25.54
319 Jelen, Iztok246472 40.45
320 Imanaliev, Taalaibek246371
321 Espig, Lutz246355 38.48
322 Sahovic, Dragutin246362 46.89
323 Cramling, Dan246260 28.40
324 Fernandez Garcia, Jose Luis246256 33.16
325 Lanc, Alois246151 39.37
326 Ostojic, Predrag246172 49.36
327 Marangunic, Srdjan246166 43.66
328 Li Zunian246158 29.48
329 Rajkovic, Dusan246059 45.04
330 Pachmann, Ludek246075 63.13
331 Efimov, Igor245966 26.79
332 Renet, Olivier245951 22.52
333 Zaitsev, Igor A245974 49.09
334 Rakic, Tomislav245966 52.63
335 Veinger, Itzhak245957 48.98
336 Janovsky, Sergey245876 27.37
337 Shirov, Alexei245873 14.98
338 Tempone, Marcelo245773 24.81
339 Giorgadze, Giorgi245767 22.72
340 Eslon, Jaan245663 35.32
341 Filipovic, Branko245660 29.73
342 Ambroz, Jan245659 33.03
343 Horvath, Jozsef245652 22.88
344 Karpman, Vadim245669 22.13
345 Klundt, Klaus245570 45.51
346 Yap, Andronico245557
347 Peters, John A245575 36.39
348 Mortensen, Erling245453 32.23
349 Sideif Sade, Fikret I245458 35.49
350 Schmidt, Wlodzimierz245449 44.22
351 Murshed, Niaz245460 21.13
352 Hjorth, Greg245267 23.95
353 Velickovic, Sasa245276 36.24
354 Marin, Mihail245263 22.19
355 Tseitlin, Mikhail S245265 40.04
356 Bastian, Herbert245262 34.55
357 Polgar, Zsuzsa245151 18.20
358 Lukin, Andrei M245066 38.84
359 Bany, Jerzy245054 26.32
360 Ardiansyah, Haji245059 35.57
361 Hartston, William R245073 39.88
362 Ricardi, Pablo244958 25.35
363 Klinger, Josef244951 20.06
364 Kirov Ivanov, Nino244854 41.81
365 Valkesalmi, Kimmo244857 26.16
366 Gauglitz, Gernot244857 25.01
367 Womacka, Mathias244874 21.01
368 Pedersen, Erik244762 28.80
369 Matlak, Marek244755 21.27
370 Nun, Josef244675 53.93
371 Thorhallsson, Throstur244661 18.28
372 Akesson, Ralf244658 26.39
373 Hertneck, Gerald244654 23.78
374 Hermann, Manfred244667 44.83
375 Lalev, Dimitar244671 27.45
376 Renman, Nils Gustaf244558
377 Ornstein, Axel244555 35.18
378 Sharif, Mershad244558 34.96
379 McNab, Colin Anderson244560 26.41
380 Vokác, Marek244558 28.56
381 Gruenberg, Hans Ulrich244456 31.47
382 Talavera, JC.244469
383 Kurtenkov, Atanas244463 23.91
384 Sigurjónsson, Gudmundur244456 39.76
385 Kolev, Atanas244364 19.95
386 Shtyrenkov, Veniamen244367 29.19
387 Kosten, Anthony C244257 28.93
388 Braga, Fernando244260 28.97
389 Thorsteins, Karl244158 22.71
390 Rachels, Stuart244162 17.76
391 Krasenkow, Michal244067 23.63
392 Rohde, Michael A244054 27.84
393 Haik, Aldo244050 34.70
394 Pribyl, Josef244057 39.72
395 Mencinger, Vojko244067 29.23
396 Ye Jiangchuan244063 26.61
397 Wockenfuss, Klaus243958 35.84
398 Kraidman, Yair243964 54.66
399 Forintos, Gyözö V243962 51.91
400 King, Daniel J243852 23.84
401 Radulov, Ivan243855 48.48
402 Sznapik, Aleksander243851 36.39
403 Meyer, E.243876
404 Bielczyk, Jacek243856 34.35
405 Lengyel, Levente243766 54.05
406 Hamann, Svend243774 46.73
407 Semkov, Semko243658 27.34
408 Wittmann, Walter243656 39.30
409 Nun, Jiri243559 29.92
410 Akhmilovskaya, Elena243561
411 Rodriguez Vargas, Orestes243561 43.98
412 Spiridonov, Nikola243554 49.34
413 Verduga, Denis Homero243461
414 Lazic, Miroljub243473 21.01
415 Martinovic, Slobodan243456 41.92
416 Thipsay, Praveen Mahadeo243457 27.88
417 Handoko, Edhi243360 26.84
418 Ligterink, Gert243354 37.62
419 Kallai, Gabor243358 28.36
420 Ochoa de Echaguen, F Javier243358 32.82
421 Benko, Pal C243263 58.95
422 Sarwinski, Miroslaw243261 33.46
423 Pavlovic, Milos243262 23.48
424 Potts, Alan243169
425 Schulte, Oliver243165 18.52
426 Robatsch, Karl243155 58.71
427 Rodriguez, Ruben243070 40.56
428 Schneider, Attila243059 32.21
429 Motwani, Paul242962 25.05
430 Rigo, Janos242962 38.67
431 Sendera, Jaroslaw242969 22.18
432 Santo Roman, Marc242869 26.80
433 Sanna, Gianlazzaro242872 27.22
434 Casper, Thomas242855 28.29
435 Hernandez, Roman242859 37.60
436 Nickoloff, Bryon242766 31.02
437 Solozhenkin, Evgeniy242769 20.91
438 Garcia, Gildardo242661 33.31
439 Kveinys, Aloyzas242671 24.97
440 Kamsky, Gata242573 13.08
441 Wiedenkeller, Michael242553 24.47
442 Mascarinas, Rico242570 34.33
443 Horváth, Csaba242560 19.07
444 Kuligowski, Adam242555 31.52
445 Mariotti, Sergio242563 40.89
446 Temirbaev, Serik242560
447 Ost Hansen, Jacob242568
448 Kouatly, Bachar242551 29.32
449 Bisguier, Arthur B242463 57.73
450 Borm, Franciscus WM242470
451 Liang Jinrong242460 27.11
452 Szmetan, Jorge242375 37.09
453 Hug, Werner242356 34.80
454 Kuczynski, Robert242352 21.20
455 Doncevic, Dario242365 29.47
456 Ghitescu, Theodor242361 53.43
457 Shvidler, Eliahu242355 27.53
458 Blatny, Pavel242255 19.02
459 Jakobsen, Ole242260 44.70
460 Ulibin, Mikhail242264 16.08
461 Condie, Mark L242156 22.38
462 McCambridge, Vincent242162 27.31
463 Horvath, Tamas242157 35.69
464 Gruenenwald, Joerg242171 22.07
465 Pliester, Leon242160 32.86
466 Paehtz, Thomas Sr242055 30.82
467 Soltis, Andrew E242062 40.09
468 Trapl, Jindrich242073 45.27
469 Filipowicz, Andrzej241960 49.13
470 Sonntag, Hans Hubert241968
471 Zahariev, Zahari241972 25.80
472 Karsa, Laszlo241961 31.80
473 Bohm, Hans241964 37.46
474 Matamoros Franco, Carlos S241962 20.54
475 Sherzer, Alex241864 16.41
476 Brueckner, Thomas241862 23.92
477 Garcia Martinez, Silvino241853 42.98
478 Sygulski, Artur241751 26.93
479 Ilic, Zoran241773 23.91
480 Toshkov, Tihomir241761 27.61
481 Pelts, Roman241771 50.30
482 Gallagher, Joseph G241764 23.15
483 Luczak, Andrzej241768 38.57
484 Karolyi, Tibor Jr241754 25.62
485 Schweber, Samuel241775 50.95
486 De Wit, Johannes S241768 22.76
487 Hawksworth, John C241670 23.56
488 Jasnikowski, Zbigniew241654 32.13
489 Mainka, Romuald241568 24.12
490 Diaz, Joaquin C241556 38.98
491 Trepp, Markus241554
492 Damjanovic, Mato241564 60.27
493 Grivas, Efstratios241565 21.25
494 Kristiansen, Jens241554 35.10
495 Qi Jingxuan241461 39.64
496 Scheeren, Peter241461 31.91
497 Wolff, Patrick G241457 19.37
498 Djuric, Stefan241353 31.92
499 Milos, Gilberto241259 23.67
500 Blees, Albert241259 24.85

These ratings, calculated as of June 30, 1987, incorporate all games (against rated opponents) played in the time between July 1, 1986 and June 30, 1987, along with the ratings that were already calculated as of June 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 June 30, 1987. This represents the player's estimated strength on July 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 July 1, 1987. The +/- value represents the standard deviation of that estimate; the player's true strength on July 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 July 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 June 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.

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