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Top 10 active players as of June 30, 1989

  #  

Player Rating +/-
1 Kasparov, Garry K282148
2 Karpov, Anatoly E280447
3 Timman, Jan H272447
4 Short, Nigel D270047
5 Salov, Valery B270050
6 Ivanchuk, Vassily269749
7 Korchnoi, Viktor L269647
8 Beliavsky, Alexander G268948
9 Ehlvest, Jaan267048
10 Hübner, Robert267048

About these ratings

Top 500 active players as of June 30, 1989

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28214855.1% #226.21
2 Karpov, Anatoly E28044736.0% #338.10
3 Timman, Jan H2724472.3% #1537.54
4 Short, Nigel D2700470.9% #2524.08
5 Salov, Valery B2700501.0% #2625.09
6 Ivanchuk, Vassily2697490.8% #2720.28
7 Korchnoi, Viktor L2696470.6% #2758.27
8 Beliavsky, Alexander G2689480.5% #3235.54
9 Ehlvest, Jaan2670480.2% #4526.71
10 Hübner, Robert2670480.2% #4540.65
11 Andersson, Ulf2669480.2% #4638.01
12 Speelman, Jonathan S2668480.2% #4732.74
13 Tal, Mikhail2668490.2% #4752.64
14 Gurevich, Mikhail N2665480.1% #4930.36
15 Dolmatov, Sergey V2660490.1% #5430.36
16 Gelfand, Boris2658500.1% #5621.02
17 Dreev, Alexey2657500.1% #5620.44
18 Jussupow, Artur M2656480.1% #5729.38
19 Ljubojevic, Ljubomir2654480.1% #5838.66
20 Portisch, Lajos2652480.1% #6252.24
21 Yudasin, Leonid G2651500.1% #6229.89
22 Nikolic, Predrag2649480.1% #6428.80
23 Tukmakov, Vladimir B2649490.1% #6543.29
24 Vaganian, Rafael A264648 #6637.71
25 Chernin, Alexander M264648 #6629.31
26 Lputian, Smbat G264649 #6731.38
27 Gulko, Boris F264548 #6742.39
28 Ribli, Zoltán264449 #7037.81
29 Khalifman, Alexander263949 #7423.45
30 Dautov, Rustem2638530.1% #7723.59
31 Nunn, John D M263748 #7634.18
32 Polugaevsky, Lev A263650 #7854.61
33 Gavrikov, Victor N263648 #7631.91
34 Dvoiris, Semen I263655 #8130.66
35 Azmaiparashvili, Zurab A263451 #8129.29
36 Kovalev, Andrei2629570.1% #9027.65
37 Agdestein, Simen262852 #8722.12
38 Sveshnikov, Evgeny E262652 #9039.38
39 Sokolov, Andrey Y262549 #8926.28
40 Pigusov, Evgeny262451 #9228.25
41 Vladimirov, Evgeny Y262353 #9432.44
42 Spassky, Boris V262349 #9152.42
43 Eingorn, Viacheslav S262249 #9132.60
44 Georgiev, Kiril262149 #9223.59
45 Vyzmanavin, Alexey261951 #9729.49
46 Yurtaev, Leonid261953 #9930.16
47 Christiansen, Larry M261949 #9633.01
48 Dorfman, Iosif D261751 #9937.16
49 Timoshchenko, Gennady261550 #10040.17
50 Psakhis, Lev B261347 #10130.59
51 Malaniuk, Vladimir P261348 #10231.94
52 Ubilava, Elizbar E261353 #10538.84
53 Smirin, Ilia261251 #10521.44
54 Balashov, Yury S261249 #10340.30
55 Bareev, Evgeny261150 #10522.61
56 Torre, Eugenio261051 #10737.65
57 Romanishin, Oleg M260848 #10637.47
58 Seirawan, Yasser260848 #10729.27
59 Ivanov, Alexander V260755 #11333.16
60 Sax, Gyula260748 #10938.03
61 Dokhoian, Yury260749 #11024.68
62 Tiviakov, Sergei260764 #12016.38
63 Hort, Vlastimil260649 #10945.47
64 Smyslov, Vassily V260650 #11068.27
65 Aseev, Konstantin N260653 #11328.69
66 deFirmian, Nicholas E260350 #11431.92
67 Razuvaev, Yury S260050 #11743.72
68 Shirov, Alexei260053 #12016.98
69 Anand, Viswanathan259850 #11919.55
70 Smagin, Sergey259549 #12330.81
71 Hjartarson, Jóhann259548 #12126.39
72 Kharitonov, Andrey Y259549 #12330.24
73 Dzindzichashvili, Roman Y259353 #12845.15
74 Rashkovsky, Nukhim N259351 #12643.20
75 Fedorowicz, John P259249 #12530.76
76 van der Wiel, John T H259148 #12629.89
77 Kruppa, Yuri259161 #13425.02
78 Lerner, Konstantin Z259150 #12739.34
79 Nogueiras, Jesus258948 #12829.95
80 Oll, Lembit258950 #12923.19
81 Kamsky, Gata258955 #13315.08
82 Krasenkow, Michal258852 #13125.63
83 Kuzmin, Gennady P258855 #13443.45
84 Goldin, Alexander258650 #13224.34
85 Rozentalis, Eduardas258551 #13426.09
86 Vaisser, Anatoli258350 #13640.32
87 Kveinys, Aloyzas258260 #14326.97
88 Larsen, Bent258049 #13954.32
89 Pintér, József258051 #14035.64
90 Miles, Anthony J258048 #13834.19
91 Spraggett, Kevin B257853 #14434.64
92 Yermolinsky, Alex V257852 #14331.22
93 Taimanov, Mark E257761 #14963.40
94 Smejkal, Jan257550 #14443.27
95 Gorelov, Sergey G257563 #15231.87
96 Vasiukov, Evgeny A257553 #14656.32
97 Podgaets, Mikhail Y257472 #15941.93
98 Epishin, Vladimir257453 #14723.96
99 Huzman, Alexander257352 #14727.22
100 Shabanov, Yury F257368 #15851.63
101 Adorján, András257251 39.25
102 Sosonko, Gennadi257253 46.12
103 Ionov, Sergey257259 27.48
104 Lobron, Eric257149 29.15
105 Tseshkovsky, Vitaly V257150 44.76
106 Neverov, Valery257154 25.02
107 Pétursson, Margeir257048 29.37
108 Ftácnik, Lubomír256949 31.67
109 Naumkin, Igor256954 23.89
110 Chandler, Murray G256849 29.24
111 Makarichev, Sergey Y256756 35.62
112 Kupreichik, Viktor D256750 39.98
113 Kudrin, Sergey256650 29.81
114 Hansen, Curt256549 24.78
115 Kholmov, Ratmir D256551 64.13
116 Olafsson, Helgi256549 32.87
117 Arkhipov, Sergey256557 35.02
118 Benjamin, Joel L256449 25.30
119 Sorokin, Maxim256461 21.44
120 Kavalek, Lubomir256358 45.89
121 Karlsson, Lars256351 33.96
122 Geller, Efim P256350 64.33
123 Greenfeld, Alon256251 25.20
124 Browne, Walter S256152 40.47
125 Timoshenko, Georgy256158 23.08
126 Darga, Klaus V256068 55.35
127 Sher, Miron N255958 37.00
128 Didishko, Vereslav255675 40.22
129 Akopian, Vladimir255652 17.56
130 Zaichik, Gennady L255451 32.38
131 Kindermann, Stefan255448 29.51
132 Giorgadze, Giorgi255354 24.72
133 Bikhovsky, Avigdor I255367 34.32
134 Panchenko, Alexander N255355 35.73
135 Mestel, A Jonathan255256 32.30
136 Hulak, Krunoslav255251 38.10
137 Popovic, Petar255149 30.38
138 Mikhalchishin, Adrian B254949 34.62
139 Hellers, Ferdinand254850 20.42
140 Janjgava, Lasha254752 19.15
141 Chekhov, Valery A254650 33.59
142 Orlov, Georgi254662
143 Murey, Yakov254650 47.91
144 Bönsch, Uwe254649 30.71
145 Karpman, Vadim254656 24.13
146 Soppe, Guillermo254462 28.79
147 Todorcevic, Miodrag254351 48.64
148 Ulibin, Mikhail254352 18.08
149 Najdorf, Miguel254363 79.21
150 Kuzmin, Alexey254254 26.31
151 Sokolov, Ivan254149 21.05
152 Duer, Arne254166 29.96
153 Tseitlin, Mark D254163 45.77
154 Quinteros, Miguel A254161 41.51
155 Ivanovic, Božidar254051 42.85
156 Knaak, Rainer F254050 36.29
157 Barua, Dibyendu254055 22.67
158 Novikov, Igor A254051 27.10
159 Kramnik, Vladimir254063 14.01
160 Kurajica, Bojan254066 41.62
161 Lalic, Bogdan253951 25.31
162 Morovic Fernández, Iván E253953 26.27
163 Schussler, Harry253754 32.02
164 Arnason, Jon L253750 28.63
165 Dlugy, Maxim253649 23.42
166 Glek, Igor V253654 27.65
167 Rodriguez, Amador253549 32.81
168 Shneider, Aleksandr253559 27.11
169 Kaidanov, Gregory S253551 29.72
170 Kengis, Edvins253457 30.22
171 Adams, Michael253451 17.62
172 Panno, Oscar R253452 54.29
173 Lanka, Zigurds253457 29.11
174 Gheorghiu, Florin253351 45.23
175 Henley, Ron W253370 32.57
176 Ruban, Vadim253353 25.05
177 Zlotnik, Boris A253362 42.71
178 Savon, Vladimir A253254 48.76
179 Van der Sterren, Paul253149 33.29
180 Moskalenko, Viktor253154 28.57
181 Cebalo, Mišo253150 44.40
182 Pfleger, Helmut253158 45.90
183 Gaprindashvili, Nona253160 48.16
184 Mirkovic, Slobodan253170 30.92
185 Wilder, Michael253150 26.79
186 Adianto, Utut253060 24.29
187 Kovacevic, Vladimir252950 47.26
188 Csom, István252950 49.08
189 Yakovich, Yuri252957 26.58
190 Rogers, Ian252849 29.02
191 Kochiev, Alexander252852 33.26
192 Suba, Mihai252750 42.08
193 Mnatsakanian, Eduard A252769 50.56
194 Bass, Leonid252762 32.08
195 Zapata, Alonso252750 30.86
196 Lukin, Andrei M252756 40.84
197 Cvitan, Ognjen252750 27.72
198 Uhlmann, Wolfgang252651 54.25
199 King, Daniel J252649 25.84
200 Kiselev, Sergey252659 27.79
201 Serper, Grigory252653 19.79
202 Bjelajac, Milan252568 41.29
203 Magerramov, Elmar S252554 31.22
204 Donchev, Dimitar I252554 30.94
205 Kalinitschew, Sergey252560 33.41
206 Cámpora, Daniel H252549 31.99
207 Liberzon, Vladimir M252470 52.27
208 Gruenberg, Hans Ulrich252352 33.47
209 Bagirov, Vladimir K252353 52.87
210 Mokrý, Karel252351 30.40
211 Faragó, Iván252349 43.24
212 Gipslis, Aivars252358 52.39
213 Nikolac, Juraj252358 57.19
214 Velimirovic, Dragoljub252351 47.13
215 Alburt, Lev O252252 43.86
216 Horvath, Jozsef252150 24.88
217 Savchenko, Stanislav252155 22.44
218 Piskov, Yury252156 27.72
219 Groszpeter, Attila252150 29.06
220 Vitolinš, Alvis252068 43.04
221 Hodgson, Julian M252049 25.92
222 Anastasian, Ashot251953 24.95
223 Chiburdanidze, Maia G251952 28.45
224 Zagrebelny, Sergey251959
225 Antunes, Antonio251956 27.40
226 Watson, William N251948 27.20
227 Basin, Leonid251854 31.60
228 Milos, Gilberto251753 25.67
229 Sherbakov, Vitaly S251767 34.03
230 Barlov, Dragan251650 32.42
231 Gufeld, Eduard E251655 53.28
232 London, Dimitri251664 26.61
233 Polgar, Zsuzsa251650 20.20
234 Gofshtein, Leonid D251566 36.19
235 Bischoff, Klaus251549 28.06
236 Wedberg, Tom251550 35.59
237 Georgadze, Tamaz V251562 41.64
238 Govedarica, Radovan251574 41.38
239 Byrne, Robert E251562 61.19
240 Ivanov, Igor V251454 42.48
241 Wahls, Matthias251451 21.43
242 Rohde, Michael A251452 29.84
243 Khenkin, Igor251360 21.27
244 Damljanovic, Branko251349 28.04
245 Gligoric, Svetozar251253 66.41
246 Baburin, Alexander251262 22.36
247 Marjanovic, Slavoljub251150 34.48
248 Moroz, Alexander251162 28.45
249 Bronstein, David I251156 65.36
250 Ninov, Kiril251052 20.73
251 Hebden, Mark251051 31.37
252 Xu Jun250956 26.79
253 Sellos, Didier250959 32.36
254 Graf, Alexander250958 26.85
255 Mochalov, Evgeny V250972 37.67
256 Veingold, Aleksander250867 35.72
257 Petrienko, Vladimir250868 34.31
258 Frias, Victor J250855 33.39
259 Wolff, Patrick G250751 21.37
260 Piket, Jeroen250749 20.42
261 Gruenfeld, Yehuda250653 33.34
262 Mohr, Stefan250651 21.69
263 Jansa, Vlastimil250651 46.59
264 Stoica, Valentin250668 39.37
265 Barbero, Gerardo F250552 27.86
266 Simic, Radoslav250556 41.06
267 Sahovic, Dragutin250561 48.89
268 Illescas Cordoba, Miguel250551 23.57
269 Efimov, Igor250462 28.79
270 Unzicker, Wolfgang250457 64.01
271 Inkiov, Ventzislav250451 33.11
272 Lein, Anatoly250454 58.26
273 Belov, Igor250363
274 Franco Ocampos, Zenon250257 33.13
275 Mortensen, Erling250253 34.23
276 Lukacs, Peter250249 38.97
277 Ye Jiangchuan250160 28.61
278 García Gonzáles, Guillermo250052 35.56
279 Andrianov, Nikolai250068 27.53
280 Petrosian, Arshak B250052 35.54
281 Ostermeyer, Peter249960 45.72
282 McKay, Roderick M249968 37.38
283 Rivas Pastor, Manuel249954 28.96
284 Palatnik, Semen A249955 39.26
285 Reyes, Juan249961 26.18
286 Dizdar, Goran249851 30.57
287 Tischbierek, Raj249852 26.77
288 Guseinov, Aidyn249857 37.49
289 Hickl, Joerg249850 24.20
290 Plaskett, Jim249753 29.28
291 Zhuravliov, Valerij249763 50.55
292 Kishnev, Sergey249763 32.66
293 Kotronias, Vasilios249750 24.85
294 Kantsler, Boris249663 27.20
295 Yuferov, Sergey N249567 43.57
296 Espig, Lutz249554 40.48
297 Rodriguez Vargas, Orestes249557 45.98
298 Barbulescu, Dan249462 25.02
299 Renet, Olivier249350 24.52
300 Garcia Palermo, Carlos249252 35.58
301 Seret, Jean Luc249262
302 Komarov, Dimitri249258 20.58
303 Womacka, Mathias249166 23.01
304 Sznapik, Aleksander249151 38.39
305 Ivkov, Borislav249154 55.63
306 Ye Rongguang249063 25.74
307 Lukov, Valentin249054 33.55
308 Foisor, Ovidiu248955 30.23
309 Gomez Baillo, Jorge H248857 30.20
310 Popchev, Milko248851 24.63
311 Loginov, Valery A248857 33.55
312 Gutman, Lev248850 43.76
313 Stohl, Igor248851 24.76
314 Reshevsky, Samuel H248861 77.59
315 Filipenko, Alexander V248673 40.32
316 Marin, Mihail248654 24.19
317 Vogt, Lothar H248650 37.45
318 Flear, Glenn C248550 30.38
319 Ionescu, Constantin248555 30.80
320 Kraidman, Yair248565 56.66
321 Drasko, Milan248549 26.56
322 Lau, Ralf248449 29.70
323 Ornstein, Axel248459 37.18
324 Tisdall, Jonathan D248352 30.84
325 Wojtkiewicz, Aleksander248353 26.46
326 Reefschlaeger, Helmut248358 45.23
327 Hazai, Laszlo248352 36.04
328 Martinovic, Slobodan248257 43.92
329 Akhmilovskaya, Elena248263
330 Palac, Mladen248263 18.37
331 Padevsky, Nikola B248261 56.09
332 Georgiev, Krum248153 31.10
333 Tunik, Gennady248167 36.09
334 Vera, Reynaldo248053 28.48
335 Yrjola, Jouni248052 29.68
336 Machulsky, Anatoly D248059 32.77
337 Kouatly, Bachar248051 31.32
338 Titov, German247958 26.18
339 Kozlov, V.247962
340 Mascarinas, Rico247957 36.33
341 Meduna, Eduard247951 38.80
342 Ghinda, Mihail Viorel247858 39.92
343 Brooks, Michael A247861 28.20
344 Granda Zuńiga, Julio E247851 22.35
345 Lin Ta247863 26.41
346 Kožul, Zdenko247851 23.11
347 Minasian, Artashes247863 22.44
348 Rukavina, Josip247862 46.59
349 Motwani, Paul247755 27.05
350 Sunye Neto, Jaime247756 32.16
351 Tseitlin, Mikhail S247753 42.04
352 Sideif Sade, Fikret I247760 37.49
353 Matulovic, Milan247760 54.05
354 Haba, Petr247754 24.48
355 Kosten, Anthony C247649 30.93
356 Braga, Fernando247656 30.97
357 Dzuban, Oleg I247565
358 Malisauskas, Vidmantas247555 25.90
359 Mednis, Edmar J247554 52.27
360 Pytel, Krzysztof247576 44.12
361 Kallai, Gabor247457 30.36
362 Velikov, Petar247452 38.25
363 Lombardy, William J247473 51.57
364 Rubinetti, Jorge A247457 44.25
365 Norwood, David247355 20.74
366 Ioseliani, Nana247255 27.38
367 Fokin, Sergey247272 33.71
368 Svensson, Bengt247276 28.97
369 Schmidt, Wlodzimierz247150 46.22
370 Kosic, Dragan247159 19.37
371 Rajkovic, Dusan247153 47.04
372 Gurevich, Dmitry247151 32.80
373 Skembris, Spyridon247053 31.36
374 Cifuentes Parada, Roberto247053 31.52
375 Murshed, Niaz247056 23.13
376 Tolnai, Tibor246950 24.77
377 Levitt, Jonathan246950 26.07
378 Thorhallsson, Throstur246957 20.28
379 Hecht, Hans-Joachim246965 50.42
380 Djuric, Stefan246950 33.92
381 Ermenkov, Evgenij246953 39.75
382 Zilberstein, Valery I246866 46.21
383 Hansen, Lars Bo246850 20.77
384 Řgaard, Leif246871 37.48
385 Abramovic, Boško246850 38.38
386 Tringov, Georgy P246858 52.31
387 Plachetka, Jan246750 44.37
388 Armas, Julius246758 34.18
389 Lechtynsky, Jiri246753 41.60
390 Pekarek, Ales246752 27.54
391 Kogan, Boris246663
392 Li Zunian246672 31.48
393 Shabalov, Alexander246652 21.80
394 Nijboer, Friso246655 24.09
395 Raicevic, Momcilo246663
396 Davies, Nigel R246550 28.91
397 Fernandez Garcia, Jose Luis246559 35.16
398 Varavin, Viktor246565 22.10
399 Gleizerov, Evgeny246565 26.28
400 Klinger, Josef246550 22.06
401 Rogulj, Branko246563 37.91
402 Gurgenidze, Bukhuti I246562 55.63
403 Temirbaev, Serik246460
404 Vukic, Milan246459 45.86
405 Vallifuoco, Giacomo246468 32.15
406 Mainka, Romuald246355 26.12
407 Petkevich, Jusefs246263 48.53
408 Negulescu, Adrian246262 28.05
409 Saltaev, Mihail246262 26.61
410 Ambroz, Jan246274 35.03
411 Piasetski, Leon David246168
412 Tempone, Marcelo246162 26.81
413 Vilela, Jose Luis246156 36.28
414 Szekely, Peter246156 34.39
415 Jukic, Mirko246059 26.70
416 Valkesalmi, Kimmo246055 28.16
417 Ekstroem, Roland246057 33.11
418 Szabó, László246073 72.28
419 Khasin, Alexander245958 38.17
420 Hertneck, Gerald245953 25.78
421 Hoi, Carsten245950 32.45
422 Staniszewski, Piotr245954 22.82
423 Veinger, Itzhak245867 50.98
424 Yuneev, Alexey245866
425 Arbakov, Valentin245865 37.42
426 Gallagher, Joseph G245852 25.15
427 Pribyl, Josef245853 41.72
428 Graf, Juergen245759 26.25
429 Djurhuus, Rune245757 19.43
430 Schneider, Lars Ake245757
431 Zlochevskij, Alexander245670 26.01
432 Hennigan, Michael245662 18.73
433 Lalev, Dimitar245670 29.45
434 Conquest, Stuart245650 22.33
435 Rachels, Stuart245663 19.76
436 Kuijf, Marinus245553 29.38
437 Sadler, Matthew245558 15.12
438 Avshalumov, Alex245557 25.33
439 Wirthensohn, Heinz245556 38.15
440 Vokác, Marek245452 30.56
441 Ernst, Thomas245450 28.87
442 Orso, Miklos245461 33.06
443 Renman, Nils Gustaf245460
444 Karolyi, Tibor Jr245351 27.62
445 Zysk, Robert245354 23.15
446 Cramling, Pia245252 26.19
447 Komljenovic, Davor245260 44.99
448 Knezevic, Milorad245256 52.66
449 Lagunow, Alexander245273 21.95
450 Neckar, Lubomir245271 38.91
451 Popov, Luben245162 53.42
452 Semkov, Semko245154 29.34
453 Gruenenwald, Joerg245161 24.07
454 Solozhenkin, Evgeniy245164 22.91
455 Ilincic, Zlatko245153 21.14
456 Arkell, Keith C245052 28.48
457 Reeh, Oliver245054 25.45
458 Brunner, Lucas245051 22.09
459 Radulov, Ivan245057 50.48
460 Cabrilo, Goran245052 30.99
461 Lutz, Christopher245056 18.35
462 Kuczynski, Robert245051 23.20
463 Sigurjónsson, Gudmundur244970 41.76
464 Dueball, Juergen244966 44.25
465 Semeniuk, Alexander A244965 36.80
466 Dizdarevic, Emir244953 31.24
467 Hawelko, Marek244852 29.89
468 Klaric, Zlatko244855 32.68
469 Verduga, Denis Homero244858
470 Nun, Jiri244854 31.92
471 Matamoros Franco, Carlos S244863 22.54
472 Leski, Marc244773 28.01
473 Brestian, Egon244758 24.92
474 Okhotnik, Vladimir244756 39.34
475 Kovacevic, Predrag244773 28.81
476 Rytshagov, Mikhail244762 21.63
477 Sendera, Jaroslaw244673 24.18
478 Marangunic, Srdjan244666 45.66
479 Ardiansyah, Haji244665 37.57
480 Rakic, Tomislav244565 54.63
481 Nemet, Ivan244559 46.21
482 Bilek, István244460 56.88
483 Luczak, Andrzej244473 40.57
484 Levin, Felix244360 30.65
485 Cramling, Dan244366 30.40
486 Schmittdiel, Eckhard244351 29.13
487 Djukic, Zeljko244370 30.05
488 Atalik, Suat244367 24.72
489 Wolf, Volker244362 31.81
490 Nikolic, Zivoslav244253 35.55
491 Lima, Darcy244259 27.11
492 Prandstetter, Eduard244253 40.54
493 Makarov, Marat244163 26.15
494 Filipovic, Branko244158 31.73
495 Legky, Nikolay A244162 34.22
496 Zelcic, Robert244173 23.77
497 Strikovic, Aleksa244154 28.13
498 Casper, Thomas244158 30.29
499 Rechlis, Gad244055 22.40
500 Klundt, Klaus244058 47.51

These ratings, calculated as of June 30, 1989, incorporate all games (against rated opponents) played in the time between July 1, 1988 and June 30, 1989, along with the ratings that were already calculated as of June 30, 1988. 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, 1989. This represents the player's estimated strength on July 1, 1989.

+/- 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, 1989. The +/- value represents the standard deviation of that estimate; the player's true strength on July 1, 1989 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, 1989. 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, 1989. 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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