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Top 10 active players as of June 30, 1991

  #  

Player Rating +/-
1 Kasparov, Garry K284249
2 Karpov, Anatoly E279148
3 Ivanchuk, Vassily276649
4 Salov, Valery B272250
5 Gelfand, Boris271149
6 Bareev, Evgeny271049
7 Beliavsky, Alexander G270648
8 Short, Nigel D270448
9 Jussupow, Artur M270249
10 Timman, Jan H268248

About these ratings

Top 500 active players as of June 30, 1991

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28424967.1% #228.21
2 Karpov, Anatoly E27914817.8% #440.10
3 Ivanchuk, Vassily2766498.3% #722.28
4 Salov, Valery B2722501.7% #1927.09
5 Gelfand, Boris2711490.9% #2323.02
6 Bareev, Evgeny2710490.9% #2424.61
7 Beliavsky, Alexander G2706480.6% #2637.54
8 Short, Nigel D2704480.6% #2726.08
9 Jussupow, Artur M2702490.6% #2831.38
10 Timman, Jan H2682480.1% #4139.54
11 Chernin, Alexander M2676490.2% #4631.31
12 Gurevich, Mikhail N2673490.1% #4932.36
13 Lputian, Smbat G2664500.1% #5733.38
14 Speelman, Jonathan S2660480.1% #6034.74
15 Yudasin, Leonid G2658490.1% #6331.89
16 Hübner, Robert2658490.1% #6242.65
17 Nikolic, Predrag265348 #6730.80
18 Andersson, Ulf265348 #6840.01
19 Anand, Viswanathan2653490.1% #6821.55
20 Polugaevsky, Lev A265250 #6956.61
21 Shirov, Alexei265049 #7118.98
22 Kramnik, Vladimir2650580.1% #7716.01
23 Korchnoi, Viktor L264947 #7160.27
24 Seirawan, Yasser264948 #7231.27
25 Dautov, Rustem264852 #7625.59
26 Eingorn, Viacheslav S2647500.1% #7434.60
27 Khalifman, Alexander264648 #7525.45
28 Gavrikov, Victor N264550 #7833.91
29 Vaganian, Rafael A264349 #7839.71
30 Vyzmanavin, Alexey264351 #8031.49
31 Ehlvest, Jaan264249 #7928.71
32 Balashov, Yury S264149 #8042.30
33 Epishin, Vladimir264149 #8225.96
34 Nunn, John D M264148 #8136.18
35 Azmaiparashvili, Zurab A263850 #8531.29
36 Dolmatov, Sergey V263550 #8832.36
37 Hansen, Curt263549 #8726.78
38 Adams, Michael263548 #8719.62
39 Miles, Anthony J263349 #9036.19
40 Christiansen, Larry M263249 #9135.01
41 Panchenko, Alexandar G2632630.1% #10230.23
42 Vladimirov, Evgeny Y263250 #9334.44
43 Chandler, Murray G263149 #9231.24
44 Tal, Mikhail263049 #9354.64
45 Ribli, Zoltán262949 #9439.81
46 Sax, Gyula262949 #9440.03
47 Agdestein, Simen262852 #9924.12
48 Ljubojevic, Ljubomir262849 #9640.66
49 Yurtaev, Leonid262755 #10132.16
50 Hjartarson, Jóhann262649 #9828.39
51 Portisch, Lajos262650 #9854.24
52 Oll, Lembit262550 #10025.19
53 Kamsky, Gata262450 #10117.08
54 Sveshnikov, Evgeny E262352 #10341.38
55 Dorfman, Iosif D262251 #10439.16
56 Dzindzichashvili, Roman Y261752 #11147.15
57 Kruppa, Yuri261658 #11527.02
58 Bologan, Viktor261558 #11719.54
59 Sokolov, Andrey Y261550 #11228.28
60 Tiviakov, Sergei261354 #11718.38
61 Razuvaev, Yury S261350 #11545.72
62 Dreev, Alexey261150 #11622.44
63 Romanishin, Oleg M261149 #11539.47
64 Kengis, Edvins260652 #12432.22
65 Lerner, Konstantin Z260552 #12341.34
66 Neverov, Valery260352 #12727.02
67 Vaulin, Alexander260258 #13334.28
68 Georgiev, Kiril260149 #12725.59
69 Rozentalis, Eduardas260151 #12928.09
70 Sturua, Zurab260160 #13532.06
71 Akopian, Vladimir260050 #12919.56
72 Ftácnik, Lubomír260048 #12733.67
73 Gulko, Boris F259949 #12844.39
74 Psakhis, Lev B259949 #13032.59
75 Goldin, Alexander259952 #13226.34
76 Yermolinsky, Alex V259858 #13733.22
77 Pintér, József259855 #13537.64
78 Spassky, Boris V259750 #13254.42
79 Dvoiris, Semen I259651 #13432.66
80 Ulibin, Mikhail259651 #13420.08
81 Aseev, Konstantin N259652 #13430.69
82 deFirmian, Nicholas E259650 #13333.92
83 Pétursson, Margeir259448 #13431.37
84 Pigusov, Evgeny259252 #13930.25
85 Dokhoian, Yury259251 #13826.68
86 Kuzmin, Gennady P259253 #14045.45
87 Novikov, Igor A259049 #13929.10
88 Ruban, Vadim259051 #14027.05
89 Huzman, Alexander258955 #14529.22
90 Torre, Eugenio258851 #14339.65
91 Wahls, Matthias258848 #14123.43
92 Timoshchenko, Gennady258754 #14542.17
93 Morovic Fernández, Iván E258754 #14528.27
94 Kharitonov, Andrey Y258753 #14532.24
95 Lobron, Eric258749 #14231.15
96 Alburt, Lev O258654 #14745.86
97 Sokolov, Ivan258649 #14323.05
98 Smirin, Ilia258650 #14423.44
99 Vaisser, Anatoli258651 #14542.32
100 Makarichev, Sergey Y258356 #15137.62
101 Magerramov, Elmar S258253 33.22
102 Hort, Vlastimil258249 47.47
103 Yakovich, Yuri258053 28.58
104 Kurajica, Bojan258054 43.62
105 Giorgadze, Giorgi258054 26.72
106 Hodgson, Julian M258049 27.92
107 Krasenkow, Michal257950 27.63
108 Piket, Jeroen257948 22.42
109 Tukmakov, Vladimir B257949 45.29
110 Kovalev, Andrei257852 29.65
111 Smagin, Sergey257749 32.81
112 Glek, Igor V257652 29.65
113 Larsen, Bent257549 56.32
114 Rogers, Ian257549 31.02
115 Kharlov, Andrei257554 22.61
116 Barua, Dibyendu257355 24.67
117 Mestel, A Jonathan257256 34.30
118 Kudrin, Sergey257152 31.81
119 Benjamin, Joel L257150 27.30
120 Gorelov, Sergey G257167 33.87
121 Shabanov, Yury F256960 53.63
122 Sakaev, Konstantin256958 17.21
123 Dlugy, Maxim256951 25.42
124 Kuzmin, Alexey256955 28.31
125 Ionov, Sergey256858 29.48
126 Hulak, Krunoslav256851 40.10
127 Serper, Grigory256752 21.79
128 Granda Zuńiga, Julio E256651 24.35
129 Baburin, Alexander256661 24.36
130 Vasiukov, Evgeny A256651 58.32
131 Averkin, Orest N256664 47.35
132 Smejkal, Jan256551 45.27
133 Suba, Mihai256450 44.08
134 Kveinys, Aloyzas256454 28.97
135 Naumkin, Igor256451 25.89
136 Adorján, András256450 41.25
137 Taimanov, Mark E256359 65.40
138 Podgaets, Mikhail Y256274 43.93
139 Kožul, Zdenko256249 25.11
140 Nogueiras, Jesus256249 31.95
141 Ye Jiangchuan256156 30.61
142 Shabalov, Alexander256152 23.80
143 Ubilava, Elizbar E256152 40.84
144 Geller, Efim P256152 66.33
145 Didishko, Vereslav256066 42.22
146 Smyslov, Vassily V255950 70.27
147 van der Wiel, John T H255948 31.89
148 Damljanovic, Branko255949 30.04
149 Illescas Cordoba, Miguel255849 25.57
150 Shneider, Aleksandr255854 29.11
151 Malaniuk, Vladimir P255850 33.94
152 Minasian, Artashes255754 24.44
153 Graf, Alexander255660 28.85
154 Rashkovsky, Nukhim N255452 45.20
155 Popovic, Petar255451 32.38
156 Bönsch, Uwe255450 32.71
157 Malisauskas, Vidmantas255454 27.90
158 Fedorowicz, John P255349 32.76
159 Kavalek, Lubomir255365 47.89
160 Hertneck, Gerald255251 27.78
161 Olafsson, Helgi255249 34.87
162 Khenkin, Igor255152 23.27
163 Chekhov, Valery A255151 35.59
164 Spraggett, Kevin B255049 36.64
165 Rohde, Michael A255056 31.84
166 Lalic, Bogdan254952 27.31
167 Zagrebelny, Sergey254967
168 Palac, Mladen254955 20.37
169 Stohl, Igor254949 26.76
170 Velimirovic, Dragoljub254851 49.13
171 Arkhipov, Sergey254855 37.02
172 Orlov, Georgi254861
173 Wolff, Patrick G254851 23.37
174 Ivanov, Alexander V254751 35.16
175 Tseshkovsky, Vitaly V254751 46.76
176 Zhuravliov, Valerij254665 52.55
177 Sher, Miron N254652 39.00
178 Moiseev, Viktor254663 32.13
179 Lanka, Zigurds254554 31.11
180 Brodsky, Michail254557 22.26
181 Karpman, Vadim254560 26.13
182 Sorokin, Maxim254553 23.44
183 Mokrý, Karel254451 32.40
184 Sherbakov, Ruslan254353 21.79
185 Lutz, Christopher254349 20.35
186 Hellers, Ferdinand254249 22.42
187 Frolov, Artur254258 20.91
188 Xu Jun254156 28.79
189 Georgadze, Tamaz V254165 43.64
190 Kaidanov, Gregory S254152 31.72
191 King, Daniel J254148 27.84
192 Bagirov, Vladimir K254152 54.87
193 Hansen, Lars Bo254049 22.77
194 Milos, Gilberto254051 27.67
195 Wojtkiewicz, Aleksander254048 28.46
196 Machulsky, Anatoly D254057 34.77
197 Cvitan, Ognjen253950 29.72
198 Donchev, Dimitar I253957 32.94
199 Wang Zili253857 23.04
200 Sosonko, Gennadi253854 48.12
201 Polgar, Zsuzsa253849 22.20
202 Kholmov, Ratmir D253850 66.13
203 Kindermann, Stefan253748 31.51
204 Lautier, Joel253649 18.22
205 Wilder, Michael253658 28.79
206 Kupreichik, Viktor D253651 41.98
207 Janjgava, Lasha253654 21.15
208 Vitolinš, Alvis253563 45.04
209 Uhlmann, Wolfgang253550 56.25
210 Tseitlin, Mark D253569 47.77
211 Arnason, Jon L253351 30.63
212 Knaak, Rainer F253350 38.29
213 Rachels, Stuart253359 21.76
214 Guseinov, Aidyn253361 39.49
215 Cámpora, Daniel H253251 33.99
216 Chiburdanidze, Maia G253251 30.45
217 Khmelnitsky, Igor N253168 22.86
218 Gofshtein, Leonid D253175 38.19
219 Kuporosov, Viktor253061 29.76
220 Nikolenko, Oleg253062 32.03
221 Gleizerov, Evgeny253056 28.28
222 Gipslis, Aivars253059 54.39
223 Novik, Maxim253067 27.55
224 Arbakov, Valentin253060 39.42
225 Darga, Klaus V253070 57.35
226 Zlotnik, Boris A253063 44.71
227 Bikhovsky, Avigdor I252958 36.32
228 Tunik, Gennady252756 38.09
229 Kovacevic, Vladimir252752 49.26
230 Zapata, Alonso252750 32.86
231 Mikhalchishin, Adrian B252751 36.62
232 Gruenberg, Hans Ulrich252750 35.47
233 Greenfeld, Alon252656 27.20
234 Ye Rongguang252653 27.74
235 Ikonnikov, Vyacheslav252558 25.29
236 Pfleger, Helmut252459 47.90
237 Tseitlin, Mikhail S252452 44.04
238 Kalinitschew, Sergey252467 35.41
239 Timoshenko, Georgy252353 25.08
240 Cramling, Pia252349 28.19
241 Fominyh, Alexander252254 32.04
242 Faragó, Iván252251 45.24
243 Petrienko, Vladimir252264 36.31
244 Najdorf, Miguel252266 81.21
245 Gurevich, Ilya252263 19.39
246 Anikaev, Yury252166 43.00
247 Quinteros, Miguel A252157 43.51
248 Makarov, Marat252158 28.15
249 Watson, William N252149 29.20
250 Kosten, Anthony C252050 32.93
251 Ernst, Thomas252051 30.87
252 Belov, Igor252058
253 Gheorghiu, Florin251951 47.23
254 Spasov, Vasil251852 20.37
255 Cifuentes Parada, Roberto251851 33.52
256 Browne, Walter S251851 42.47
257 Savchenko, Stanislav251858 24.44
258 Vukic, Milan251652 47.86
259 Panchenko, Alexander N251652 37.73
260 Oblitas Guerrero, Carlomagno251664
261 Kochiev, Alexander251654 35.26
262 Piskov, Yury251554 29.72
263 Gufeld, Eduard E251562 55.28
264 Andrianov, Nikolai251562 29.53
265 Jelen, Iztok251566 44.45
266 Varavin, Viktor251559 24.10
267 Rodriguez, Amador251450 34.81
268 Popchev, Milko251453 26.63
269 Polgar, Judit251450 14.93
270 Plaskett, Jim251353 31.28
271 Kishnev, Sergey251356 34.66
272 Palatnik, Semen A251355 41.26
273 Djuric, Stefan251252 35.92
274 Basin, Leonid251264 33.60
275 Marin, Mihail251153 26.19
276 Magomedov, Magaram251157 25.11
277 Zhidkov, Valery S251160 51.82
278 Zlochevskij, Alexander251063 28.01
279 Shipov, Sergei251072 25.20
280 Anastasian, Ashot251054 26.95
281 Lukin, Andrei M251055 42.84
282 Hickl, Joerg251050 26.20
283 Yuneev, Alexey251060
284 Petkevich, Jusefs251063 50.53
285 Georgiev, Krum250951 33.10
286 Tischbierek, Raj250951 28.77
287 Horvath, Jozsef250849 26.88
288 Panno, Oscar R250851 56.29
289 Duer, Arne250863 31.96
290 Sellos, Didier250767 34.36
291 Chudinovskih, Alexander250767 24.30
292 Hector, Jonny250749 27.38
293 Kallai, Gabor250756 32.36
294 Cebalo, Mišo250651 46.40
295 Schoenthier, Frank250669 32.62
296 Zaichik, Gennady L250652 34.38
297 Arencibia, Walter250551 23.94
298 Tolnai, Tibor250551 26.77
299 Matulovic, Milan250558 56.05
300 Nikolac, Juraj250567 59.19
301 Kurtenkov, Atanas250568 27.91
302 Rechlis, Gad250456 24.40
303 Liberzon, Vladimir M250366 54.27
304 Bronstein, David I250357 67.36
305 Ardiansyah, Haji250362 39.57
306 Gurevich, Vladimir250360 31.90
307 Klinger, Josef250250 24.06
308 Hebden, Mark250151 33.37
309 Rytshagov, Mikhail250159 23.63
310 Soppe, Guillermo250154 30.79
311 Renet, Olivier250150 26.52
312 Bass, Leonid250156 34.08
313 Gallagher, Joseph G250149 27.15
314 Rodriguez Vargas, Orestes250055 47.98
315 Van der Sterren, Paul250049 35.29
316 Loginov, Valery A250053 35.55
317 Rubinetti, Jorge A249957 46.25
318 Titov, German249959 28.18
319 Vogt, Lothar H249951 39.45
320 Lau, Ralf249851 31.70
321 Mochalov, Evgeny V249864 39.67
322 Cid, Marino Alejandro249864 33.05
323 Podzielny, Karl Heinz249864 36.80
324 Savon, Vladimir A249752 50.76
325 Gaprindashvili, Nona249756 50.16
326 Zakharov, Alexander V249769 47.73
327 Bischoff, Klaus249749 30.06
328 Rivas Pastor, Manuel249655 30.96
329 Barlov, Dragan249651 34.42
330 Beim, Valery249661 41.29
331 Cabrilo, Goran249650 32.99
332 Yuferov, Sergey N249656 45.57
333 Tabatadze, Tamaz249567 23.25
334 Moskalenko, Viktor249550 30.57
335 García Gonzáles, Guillermo249557 37.56
336 Kotronias, Vasilios249550 26.85
337 Lima, Darcy249563 29.11
338 Reshevsky, Samuel H249460 79.59
339 Simic, Radoslav249453 43.06
340 Efimov, Igor249356 30.79
341 Yrjola, Jouni249352 31.68
342 Veingold, Aleksander249258 37.72
343 Antonio, Rogelio Jr249257 29.36
344 Meister, Yakov249261 35.80
345 Flear, Glenn C249250 32.38
346 Murey, Yakov249254 49.91
347 Brunner, Lucas249248 24.09
348 Galliamova, Alisa249162 19.45
349 Petrosian, Arshak B249152 37.54
350 Norwood, David249155 22.74
351 Meduna, Eduard249053 40.80
352 Inkiov, Ventzislav249050 35.11
353 Dzuban, Oleg I249068
354 Reeh, Oliver249051 27.45
355 Dimitrov, Vladimir249056 23.22
356 Ermenkov, Evgenij248950 41.75
357 Rausis, Igors248955 30.23
358 Kosic, Dragan248861 21.37
359 Haba, Petr248852 26.48
360 Schmittdiel, Eckhard248850 31.13
361 Ivanov, Igor V248854 44.48
362 Lukacs, Peter248749 40.97
363 Ivanovic, Božidar248750 44.85
364 Kiselev, Sergey248753 29.79
365 Karlsson, Lars248752 35.96
366 Mirkovic, Slobodan248663 32.92
367 Hazai, Laszlo248657 38.04
368 Sunye Neto, Jaime248652 34.16
369 Csom, István248651 51.08
370 Lin Ta248660 28.41
371 Abramovic, Boško248652 40.38
372 Marjanovic, Slavoljub248555 36.48
373 Todorcevic, Miodrag248549 50.64
374 Ivkov, Borislav248553 57.63
375 Annageldyev, Orazly248568 31.28
376 Jansa, Vlastimil248549 48.59
377 Fishbein, Alexander248553 23.14
378 Unzicker, Wolfgang248552 66.01
379 Ornstein, Axel248564 39.18
380 Gomez Baillo, Jorge H248557 32.20
381 Kouatly, Bachar248556 33.32
382 Schlosser, Philipp248451 22.86
383 Komarov, Dimitri248460 22.58
384 Ionescu, Constantin248455 32.80
385 Shmuter, Leonid248467 22.16
386 Foisor, Ovidiu248459 32.23
387 Moroz, Alexander248361 30.45
388 Zezulkin, Jurij248365 19.87
389 Adianto, Utut248354 26.29
390 Schussler, Harry248355 34.02
391 Ghinda, Mihail Viorel248359 41.92
392 Doroshkievich, Vladimir K248362 53.51
393 Frias, Victor J248255 35.39
394 Lein, Anatoly248256 60.26
395 Brenninkmeijer, Joris248251 21.79
396 Womacka, Mathias248262 25.01
397 Pekarek, Ales248256 29.54
398 Tempone, Marcelo248257 28.81
399 Dizdarevic, Emir248153 33.24
400 Dizdar, Goran248152 32.57
401 Sahovic, Dragutin248067 50.89
402 Gruenfeld, Yehuda248056 35.34
403 Tisdall, Jonathan D248050 32.84
404 Khasin, Alexander247960 40.17
405 Espig, Lutz247952 42.48
406 Komljenovic, Davor247955 46.99
407 Vera, Reynaldo247854 30.48
408 Thorsteins, Karl247853 26.71
409 Stangl, Markus247851 22.17
410 Gonzalez, JA.247865
411 Barbero, Gerardo F247849 29.86
412 Kraidman, Yair247871 58.66
413 Magem Badals, Jordi247852 23.85
414 Mainka, Romuald247752 28.12
415 Romero Holmes, Alfonso247751 26.09
416 Temirbaev, Serik247664
417 Mukhametov, Eldar247660 22.11
418 Saltaev, Mihail247669 28.61
419 Franco Ocampos, Zenon247651 35.13
420 Zhelnin, Vladimir V247661 44.30
421 Kuczynski, Robert247551 25.20
422 Vorotnikov, Vladislav V247561 43.87
423 Groszpeter, Attila247550 31.06
424 Levitt, Jonathan247552 28.07
425 Kapetanovic, Armin247559
426 Beshukov, Sergei247456 20.24
427 Ekstroem, Roland247465 35.11
428 Winants, Luc247353 28.49
429 Solozhenkin, Evgeniy247360 24.91
430 Sadler, Matthew247353 17.12
431 Byrne, Robert E247357 63.19
432 Sideif Sade, Fikret I247362 39.49
433 Ibragimov, Ildar247256 23.87
434 Filipenko, Alexander V247262 42.32
435 Johansen, Darryl K247256 32.40
436 Bruk, Ofer247160 23.46
437 Conquest, Stuart247149 24.33
438 Atalik, Suat247153 26.72
439 Stefansson, Hannes247153 18.94
440 Prandstetter, Eduard247157 42.54
441 Budnikov, Alexandar247156 24.43
442 Bukic, Enver247171 53.58
443 Ginsburg, Gennadij247171 19.88
444 Kirov Ivanov, Nino247155 45.81
445 Ziatdinov, Raset247153 32.51
446 Gligoric, Svetozar246954 68.41
447 Pichler, Juergen246960 30.07
448 Milov, Leonid246973 25.40
449 Zilberstein, Valery I246872 48.21
450 Poluljahov, Aleksandr246859 26.06
451 Perovic, Dragan246870
452 Rajkovic, Dusan246851 49.04
453 Grivas, Efstratios246753 25.25
454 Rukavina, Josip246765 48.59
455 Maiwald, Jens Uwe246768 17.15
456 Gurgenidze, Bukhuti I246761 57.63
457 Moldobaev, Emelbek246765
458 Finegold, Benjamin246653 21.81
459 Kosashvili, Yona246659 20.98
460 Drasko, Milan246651 28.56
461 Semkov, Semko246557 31.34
462 Hresc, Vladimir246466 39.61
463 Strikovic, Aleksa246450 30.13
464 Bellon Lopez, Juan Manuel246451 41.14
465 Brooks, Michael A246363 30.20
466 Castro Rojas, Oscar Humberto246358 38.14
467 Ivanov, Sergey246259 29.75
468 Nasybullin, Vladislav246272
469 Kolev, Atanas246254 23.95
470 Sznapik, Aleksander246251 40.39
471 Vazquez, Renier246269
472 Muse, Mladen246153 28.44
473 Kantsler, Boris246158 29.20
474 Filipovic, Branko246162 33.73
475 Schmidt, Wlodzimierz246150 48.22
476 Davies, Nigel R246050 30.91
477 Marinkovic, Ivan246054 23.95
478 Garcia Palermo, Carlos246053 37.58
479 Howell, James C246052 24.12
480 Giardelli, Sergio C246063 36.01
481 Vilela, Jose Luis246057 38.28
482 Vallifuoco, Giacomo246072 34.15
483 Antunes, Antonio245952 29.40
484 Ostenstad, Berge245950 26.79
485 Mednis, Edmar J245954 54.27
486 Ivanov, V.245974
487 Legky, Nikolay A245859 36.22
488 Lagunow, Alexander245867 23.95
489 Fernandez Garcia, Jose Luis245853 37.16
490 Leski, Marc245872 30.01
491 Szekely, Peter245853 36.39
492 Martynov, Pavel245768 23.49
493 Lalev, Dimitar245774 31.45
494 Ree, Hans245757 46.79
495 Plachetka, Jan245750 46.37
496 Semeniuk, Alexander A245769 38.80
497 Lanc, Alois245757 43.37
498 Ilincic, Zlatko245753 23.14
499 Manor, Ilan245656 21.68
500 Fokin, Sergey245667 35.71

These ratings, calculated as of June 30, 1991, incorporate all games (against rated opponents) played in the time between July 1, 1990 and June 30, 1991, along with the ratings that were already calculated as of June 30, 1990. 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, 1991. This represents the player's estimated strength on July 1, 1991.

+/- 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, 1991. The +/- value represents the standard deviation of that estimate; the player's true strength on July 1, 1991 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, 1991. 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, 1991. 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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