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Top 10 active players as of September 30, 1991


Top 500 active players as of September 30, 1991

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28384965.8% #228.46
2 Karpov, Anatoly E27844816.5% #540.35
3 Ivanchuk, Vassily27724910.8% #622.53
4 Bareev, Evgeny2715491.3% #2224.86
5 Salov, Valery B2708500.9% #2627.34
6 Short, Nigel D2708480.7% #2626.33
7 Jussupow, Artur M2707490.8% #2631.63
8 Gelfand, Boris2701490.7% #3023.27
9 Beliavsky, Alexander G2695480.4% #3337.79
10 Chernin, Alexander M2677490.2% #4831.56
11 Gurevich, Mikhail N2674490.2% #5032.61
12 Nikolic, Predrag2673480.1% #5031.05
13 Timman, Jan H2668480.1% #5439.79
14 Anand, Viswanathan2666490.1% #5721.80
15 Speelman, Jonathan S2665480.1% #5734.99
16 Yudasin, Leonid G2665490.1% #5832.14
17 Hübner, Robert2659490.1% #6442.90
18 Shirov, Alexei2658480.1% #6519.24
19 Polugaevsky, Lev A2657510.1% #6756.86
20 Khalifman, Alexander265747 #6525.70
21 Lputian, Smbat G2656500.1% #6733.63
22 Kramnik, Vladimir2655580.2% #7416.26
23 Ehlvest, Jaan2655480.1% #6828.95
24 Eingorn, Viacheslav S2652500.1% #7234.85
25 Seirawan, Yasser265148 #7231.52
26 Balashov, Yury S265049 #7342.55
27 Vaganian, Rafael A264849 #7439.95
28 Miles, Anthony J264649 #7836.44
29 Ljubojevic, Ljubomir264649 #7740.91
30 Korchnoi, Viktor L264448 #7960.52
31 Sveshnikov, Evgeny E264452 #8341.63
32 Vladimirov, Evgeny Y264450 #8134.69
33 Epishin, Vladimir264249 #8226.22
34 Hansen, Curt264149 #8427.03
35 Bologan, Viktor264054 #8719.79
36 Nunn, John D M263849 #8736.43
37 Agdestein, Simen263753 #9224.37
38 Azmaiparashvili, Zurab A263550 #9131.54
39 Vyzmanavin, Alexey263450 #9231.74
40 Dautov, Rustem263351 #9425.84
41 Andersson, Ulf263248 #9240.26
42 Christiansen, Larry M263249 #9235.26
43 Adams, Michael263248 #9219.87
44 Gavrikov, Victor N263149 #9534.17
45 Dolmatov, Sergey V262949 #9732.61
46 Tal, Mikhail262850 #9954.89
47 Ribli, Zoltán262850 #9940.06
48 Dorfman, Iosif D262652 #10339.41
49 Kamsky, Gata262650 #10317.33
50 Yurtaev, Leonid262554 #10632.41
51 Hjartarson, Jóhann262449 #10228.64
52 Sturua, Zurab262359 #11132.31
53 Oll, Lembit262250 #10525.44
54 Chandler, Murray G262149 #10731.49
55 Sax, Gyula262150 #10740.28
56 Dreev, Alexey261950 #11022.69
57 Portisch, Lajos261950 #11054.49
58 Kengis, Edvins261851 #11232.47
59 Psakhis, Lev B261649 #11332.84
60 Georgiev, Kiril261549 #11325.84
61 Akopian, Vladimir261550 #11419.81
62 Dvoiris, Semen I261551 #11432.91
63 Razuvaev, Yury S261350 #11745.96
64 Dzindzichashvili, Roman Y261351 #11847.40
65 Romanishin, Oleg M261249 #11739.72
66 deFirmian, Nicholas E261150 #11834.18
67 Pintér, József261054 #12337.89
68 Goldin, Alexander260952 #12326.59
69 Aseev, Konstantin N260751 #12430.94
70 Ulibin, Mikhail260751 #12420.33
71 Rozentalis, Eduardas260650 #12528.34
72 Kruppa, Yuri260658 #13127.27
73 Yermolinsky, Alex V260556 #12933.47
74 Neverov, Valery260353 #13027.27
75 Vaulin, Alexander260258 #13534.53
76 Sokolov, Andrey Y259950 #13228.53
77 Gulko, Boris F259948 #13144.64
78 Kharitonov, Andrey Y259853 #13732.49
79 Novikov, Igor A259749 #13429.35
80 Kuzmin, Gennady P259653 #13845.70
81 Kharlov, Andrei259454 #14122.86
82 Pigusov, Evgeny259453 #14130.50
83 Hodgson, Julian M259449 #13828.18
84 Lerner, Konstantin Z259352 #14041.59
85 Sokolov, Ivan259349 #13823.30
86 Ruban, Vadim259251 #14127.30
87 Piket, Jeroen259248 #14022.67
88 Spassky, Boris V259150 #14254.67
89 Magerramov, Elmar S259053 #14433.47
90 Huzman, Alexander258956 #14629.47
91 Tiviakov, Sergei258954 #14618.63
92 Benjamin, Joel L258849 #14327.55
93 Vaisser, Anatoli258851 #14542.57
94 Ftácnik, Lubomír258849 #14333.91
95 Pétursson, Margeir258848 #14331.62
96 Morovic Fernández, Iván E258854 #14828.52
97 Ionov, Sergey258758 #15029.73
98 Krasenkow, Michal258750 #14527.88
99 Lobron, Eric258749 #14631.40
100 Torre, Eugenio258652 #14739.90
101 Giorgadze, Giorgi258654 26.96
102 Makarichev, Sergey Y258556 37.87
103 Tukmakov, Vladimir B258549 45.54
104 Dokhoian, Yury258451 26.92
105 Barua, Dibyendu258355 24.92
106 Gorelov, Sergey G258368 34.12
107 Wahls, Matthias258349 23.68
108 Kuzmin, Alexey258354 28.56
109 Timoshchenko, Gennady258253 42.42
110 Yakovich, Yuri258152 28.83
111 Kurajica, Bojan258153 43.87
112 Malaniuk, Vladimir P258049 34.19
113 Vasiukov, Evgeny A258052 58.57
114 Rogers, Ian258049 31.27
115 Serper, Grigory257752 22.04
116 Smirin, Ilia257750 23.69
117 Hulak, Krunoslav257751 40.35
118 Minasian, Artashes257654 24.69
119 Smagin, Sergey257648 33.06
120 Lautier, Joel257548 18.47
121 Kudrin, Sergey257252 32.06
122 Suba, Mihai257151 44.33
123 Palac, Mladen257153 20.62
124 Hort, Vlastimil257049 47.72
125 Larsen, Bent257049 56.57
126 Rashkovsky, Nukhim N256953 45.45
127 Dlugy, Maxim256951 25.67
128 Malisauskas, Vidmantas256754 28.15
129 Graf, Alexander256760 29.10
130 Granda Zuńiga, Julio E256751 24.60
131 Geller, Efim P256652 66.58
132 Taimanov, Mark E256560 65.65
133 Wolff, Patrick G256451 23.62
134 Smejkal, Jan256450 45.52
135 Damljanovic, Branko256449 30.29
136 Podgaets, Mikhail Y256474 44.19
137 Zhuravliov, Valerij256366 52.80
138 Ivanov, Alexander V256350 35.41
139 Shabanov, Yury F256360 53.88
140 Smyslov, Vassily V256351 70.52
141 van der Wiel, John T H256248 32.14
142 Averkin, Orest N256260 47.60
143 Kaidanov, Gregory S256151 31.96
144 Arkhipov, Sergey256153 37.27
145 Glek, Igor V256152 29.90
146 Illescas Cordoba, Miguel256049 25.82
147 Rohde, Michael A256054 32.09
148 Popovic, Petar255951 32.63
149 Shabalov, Alexander255951 24.05
150 Sorokin, Maxim255953 23.69
151 Ye Jiangchuan255956 30.86
152 Adorján, András255950 41.50
153 Nogueiras, Jesus255949 32.20
154 Didishko, Vereslav255866 42.47
155 Panchenko, Alexandar G255766 30.48
156 Kovalev, Andrei255752 29.90
157 Mokrý, Karel255651 32.65
158 Kveinys, Aloyzas255654 29.22
159 Stohl, Igor255649 27.01
160 Xie Jun255556 20.91
161 Velimirovic, Dragoljub255451 49.38
162 Hertneck, Gerald255452 28.03
163 Kožul, Zdenko255449 25.36
164 Arbakov, Valentin255460 39.67
165 Ubilava, Elizbar E255352 41.09
166 Kavalek, Lubomir255369 48.14
167 Khenkin, Igor255352 23.52
168 Shneider, Aleksandr255354 29.36
169 Sherbakov, Ruslan255253 22.04
170 Sakaev, Konstantin255258 17.46
171 Lalic, Bogdan255252 27.56
172 Hellers, Ferdinand255149 22.67
173 Moiseev, Viktor255161 32.38
174 Fedorowicz, John P255148 33.01
175 Brodsky, Michail255057 22.51
176 Hansen, Lars Bo255049 23.02
177 Tseshkovsky, Vitaly V255052 47.01
178 Georgadze, Tamaz V255065 43.89
179 Machulsky, Anatoly D255057 35.02
180 Lanka, Zigurds254953 31.36
181 Naumkin, Igor254751 26.14
182 Xu Jun254756 29.04
183 Kalinitschew, Sergey254765 35.66
184 Sher, Miron N254753 39.25
185 Alburt, Lev O254654 46.11
186 Makarov, Marat254557 28.40
187 Kupreichik, Viktor D254551 42.24
188 Olafsson, Helgi254550 35.12
189 Zezulkin, Jurij254570 20.12
190 Mestel, A Jonathan254458 34.55
191 Milos, Gilberto254451 27.91
192 Arnason, Jon L254451 30.88
193 Chekhov, Valery A254350 35.84
194 Chiburdanidze, Maia G254351 30.70
195 Polgar, Zsuzsa254349 22.45
196 Spraggett, Kevin B254350 36.89
197 Kholmov, Ratmir D254350 66.38
198 Baburin, Alexander254258 24.61
199 Mikhalchishin, Adrian B254250 36.87
200 Ikonnikov, Vyacheslav254256 25.54
201 Gleizerov, Evgeny254256 28.53
202 Orlov, Georgi254061
203 Cámpora, Daniel H254051 34.25
204 Guseinov, Aidyn253961 39.74
205 Khmelnitsky, Igor N253867 23.11
206 Petrienko, Vladimir253770 36.56
207 Bagirov, Vladimir K253751 55.12
208 Rachels, Stuart253758 22.01
209 Donchev, Dimitar I253657 33.19
210 Zlotnik, Boris A253660 44.95
211 Cvitan, Ognjen253650 29.96
212 Quinteros, Miguel A253658 43.76
213 Watson, William N253549 29.45
214 Knaak, Rainer F253550 38.54
215 Janjgava, Lasha253553 21.40
216 Karpman, Vadim253560 26.38
217 Greenfeld, Alon253453 27.45
218 Ye Rongguang253353 27.98
219 Gipslis, Aivars253356 54.64
220 Kindermann, Stefan253348 31.76
221 Vukic, Milan253252 48.11
222 Meister, Yakov253261 36.05
223 Gufeld, Eduard E253264 55.53
224 Ernst, Thomas253250 31.12
225 Beim, Valery253159 41.54
226 Lutz, Christopher253149 20.60
227 Wojtkiewicz, Aleksander253148 28.71
228 Wilder, Michael253158 29.04
229 Sosonko, Gennadi253055 48.37
230 King, Daniel J253048 28.09
231 Palatnik, Semen A252955 41.51
232 Kuporosov, Viktor252957 30.01
233 Nikolenko, Oleg252962 32.28
234 Wang Zili252957 23.29
235 Kosten, Anthony C252950 33.18
236 Zapata, Alonso252950 33.11
237 Gruenberg, Hans Ulrich252851 35.72
238 Darga, Klaus V252770 57.60
239 Novik, Maxim252768 27.80
240 Magomedov, Magaram252757 25.36
241 Kovacevic, Vladimir252752 49.51
242 Cramling, Pia252649 28.44
243 Frolov, Artur252658 21.17
244 Faragó, Iván252651 45.49
245 Timoshenko, Georgy252653 25.33
246 Najdorf, Miguel252666 81.46
247 Gurevich, Ilya252560 19.64
248 Yuneev, Alexey252460
249 Vitolinš, Alvis252464 45.29
250 Anastasian, Ashot252354 27.20
251 Bönsch, Uwe252349 32.95
252 Fominyh, Alexander252354 32.29
253 Rytshagov, Mikhail252359 23.88
254 Gofshtein, Leonid D252260 38.44
255 Savchenko, Stanislav252255 24.69
256 Hector, Jonny252148 27.63
257 Ivanov, Igor V252152 44.73
258 Pfleger, Helmut252159 48.15
259 Rechlis, Gad252055 24.65
260 Belov, Igor252062
261 Uhlmann, Wolfgang251949 56.50
262 Anikaev, Yury251968 43.25
263 Cifuentes Parada, Roberto251951 33.77
264 Mnatsakanian, Eduard A251873 52.81
265 Kurtenkov, Atanas251868 28.16
266 Georgiev, Krum251852 33.35
267 Polgar, Judit251750 15.19
268 Kochiev, Alexander251753 35.51
269 Piskov, Yury251754 29.96
270 Varavin, Viktor251759 24.35
271 Spasov, Vasil251652 20.62
272 Liberzon, Vladimir M251666 54.52
273 Bikhovsky, Avigdor I251655 36.57
274 Jelen, Iztok251666 44.70
275 Rodriguez, Amador251550 35.06
276 Petkevich, Jusefs251563 50.78
277 Cebalo, Mišo251551 46.65
278 Tolnai, Tibor251551 27.02
279 Klinger, Josef251450 24.31
280 Van der Sterren, Paul251449 35.54
281 Popchev, Milko251454 26.88
282 Mochalov, Evgeny V251364 39.91
283 Gluzman, Mikhail251269 24.07
284 Renet, Olivier251249 26.77
285 Zhidkov, Valery S251260 52.07
286 Zaichik, Gennady L251253 34.63
287 Panchenko, Alexander N251151 37.98
288 Djuric, Stefan251151 36.18
289 Rivas Pastor, Manuel251054 31.21
290 Gheorghiu, Florin251051 47.48
291 Matulovic, Milan251058 56.30
292 Shipov, Sergei250972 25.45
293 Chudinovskih, Alexander250967 24.55
294 Hickl, Joerg250951 26.45
295 Loginov, Valery A250852 35.80
296 Tunik, Gennady250857 38.34
297 Lukin, Andrei M250856 43.09
298 Browne, Walter S250751 42.72
299 Zlochevskij, Alexander250761 28.26
300 Sadler, Matthew250752 17.37
301 Nikolac, Juraj250767 59.44
302 Duer, Arne250562 32.22
303 Marin, Mihail250553 26.44
304 Bischoff, Klaus250549 30.31
305 Tischbierek, Raj250551 29.02
306 Rausis, Igors250556 30.48
307 Haba, Petr250452 26.73
308 Horvath, Jozsef250449 27.13
309 Schoenthier, Frank250468 32.87
310 Kishnev, Sergey250455 34.91
311 Gallagher, Joseph G250449 27.40
312 Arencibia, Walter250451 24.19
313 Vogt, Lothar H250351 39.70
314 Soppe, Guillermo250354 31.04
315 Cabrilo, Goran250250 33.24
316 Antonio, Rogelio Jr250255 29.61
317 Panno, Oscar R250252 56.54
318 Fishbein, Alexander250252 23.39
319 Ardiansyah, Haji250262 39.82
320 Bass, Leonid250257 34.33
321 Lau, Ralf250150 31.94
322 Inkiov, Ventzislav250151 35.36
323 Zakharov, Alexander V250171 47.97
324 Tseitlin, Mikhail S250152 44.29
325 Rubinetti, Jorge A250157 46.50
326 Kotronias, Vasilios250049 27.10
327 Kuczynski, Robert250050 25.45
328 Sellos, Didier250067 34.61
329 Hebden, Mark250050 33.62
330 Basin, Leonid249965 33.85
331 Podzielny, Karl Heinz249964 37.05
332 Polovodin, Igor A249873 36.52
333 Bronstein, David I249856 67.61
334 Lima, Darcy249863 29.36
335 Zagrebelny, Sergey249859
336 Lukacs, Peter249849 41.22
337 Titov, German249758 28.43
338 Kallai, Gabor249756 32.61
339 Veingold, Aleksander249758 37.96
340 Brunner, Lucas249649 24.34
341 Barbero, Gerardo F249649 30.11
342 Rodriguez Vargas, Orestes249654 48.24
343 Komarov, Dimitri249560 22.83
344 Sunye Neto, Jaime249552 34.41
345 Petrosian, Arshak B249552 37.79
346 García Gonzáles, Guillermo249458 37.81
347 Kouatly, Bachar249454 33.57
348 Cid, Marino Alejandro249464 33.30
349 Reshevsky, Samuel H249360 79.84
350 Schmittdiel, Eckhard249349 31.38
351 Schussler, Harry249356 34.27
352 Womacka, Mathias249260 25.26
353 Ree, Hans249259 47.04
354 Galliamova, Alisa249261 19.70
355 Abramovic, Boško249252 40.63
356 Tseitlin, Mark D249261 48.02
357 Meduna, Eduard249154 41.05
358 Pekarek, Ales249158 29.79
359 Plaskett, Jim249154 31.53
360 Dzuban, Oleg I249168
361 Lin Ta249160 28.66
362 Zaitsev, Igor A249063 53.34
363 Poluljahov, Aleksandr249059 26.31
364 Annageldyev, Orazly249068 31.53
365 Reeh, Oliver248952 27.70
366 Mirkovic, Slobodan248963 33.17
367 Yuferov, Sergey N248956 45.82
368 Ivanovic, Božidar248950 45.10
369 Doroshkievich, Vladimir K248962 53.76
370 Vera, Reynaldo248954 30.73
371 Gomez Baillo, Jorge H248957 32.45
372 Marjanovic, Slavoljub248955 36.73
373 Kiselev, Sergey248954 30.04
374 Yrjola, Jouni248852 31.93
375 Poldauf, Dirk248859 26.04
376 Andrianov, Nikolai248861 29.78
377 Schlosser, Philipp248850 23.11
378 Ibragimov, Ildar248756 24.12
379 Sideif Sade, Fikret I248761 39.74
380 Ermenkov, Evgenij248751 42.00
381 Ivkov, Borislav248753 57.88
382 Santo Roman, Marc248652 31.05
383 Csom, István248651 51.33
384 Tempone, Marcelo248657 29.06
385 Mainka, Romuald248550 28.37
386 Franco Ocampos, Zenon248551 35.38
387 Simic, Radoslav248554 43.31
388 Romero Holmes, Alfonso248551 26.34
389 Barlov, Dragan248551 34.67
390 Jansa, Vlastimil248549 48.84
391 Shmuter, Leonid248467 22.41
392 Moskalenko, Viktor248450 30.82
393 Zhelnin, Vladimir V248461 44.55
394 Adianto, Utut248454 26.54
395 Sahovic, Dragutin248470 51.14
396 Gaprindashvili, Nona248356 50.41
397 Alterman, Boris248359 21.40
398 Norwood, David248356 22.98
399 Karlsson, Lars248353 36.22
400 Groszpeter, Attila248251 31.31
401 Magem Badals, Jordi248253 24.10
402 Gonzalez, JA.248165
403 Frias, Victor J248056 35.64
404 Savon, Vladimir A248052 51.01
405 Unzicker, Wolfgang248052 66.26
406 Flear, Glenn C248050 32.63
407 Dizdarevic, Emir247953 33.49
408 Kantsler, Boris247960 29.45
409 Johansen, Darryl K247956 32.65
410 Temirbaev, Serik247964
411 Thorsteins, Karl247853 26.96
412 Todorcevic, Miodrag247849 50.89
413 Khasin, Alexander247861 40.42
414 Okhotnik, Vladimir247864 41.59
415 Milov, Leonid247873 25.65
416 Atalik, Suat247753 26.96
417 Ionescu, Constantin247756 33.05
418 Hresc, Vladimir247766 39.86
419 Gurevich, Vladimir247760 32.15
420 Dimitrov, Vladimir247756 23.47
421 Hazai, Laszlo247657 38.29
422 Gligoric, Svetozar247654 68.66
423 Beshukov, Sergei247656 20.49
424 Gruenfeld, Yehuda247554 35.59
425 Foisor, Ovidiu247560 32.48
426 Drasko, Milan247450 28.81
427 Winants, Luc247453 28.74
428 Pogorelov, Ruslan247468 32.31
429 Ginsburg, Gennadij247371 20.13
430 Mukhametov, Eldar247361 22.36
431 Ekstroem, Roland247365 35.36
432 Dizdar, Goran247352 32.82
433 Byrne, Robert E247257 63.44
434 Budnikov, Alexandar247256 24.68
435 Fernandez Garcia, Jose Luis247254 37.41
436 Bellon Lopez, Juan Manuel247252 41.39
437 Ghinda, Mihail Viorel247257 42.18
438 Bruk, Ofer247260 23.71
439 Murshed, Niaz247254 25.38
440 Finegold, Benjamin247254 22.06
441 Mohr, Stefan247251 23.93
442 Bukic, Enver247171 53.83
443 Kapetanovic, Armin247157
444 Castro Rojas, Oscar Humberto247157 38.39
445 Perovic, Dragan247168
446 Rajkovic, Dusan247151 49.29
447 Saltaev, Mihail247169 28.86
448 Stefansson, Hannes247052 19.20
449 Manor, Ilan247054 21.92
450 Luther, Thomas247049 21.90
451 Yandemirov, Valeri247062 28.63
452 Nijboer, Friso246950 26.34
453 Thorhallsson, Throstur246955 22.53
454 Murey, Yakov246953 50.16
455 Brenninkmeijer, Joris246951 22.04
456 Ziatdinov, Raset246952 32.76
457 Davies, Nigel R246950 31.16
458 Agrest, Evgenij246960 25.12
459 Blatny, Pavel246850 23.27
460 Vazquez, Renier246869
461 Ivanov, Sergey246860 30.00
462 Conquest, Stuart246849 24.58
463 Kirov Ivanov, Nino246856 46.06
464 Strikovic, Aleksa246850 30.38
465 Badea, Bela246858 22.61
466 Zelcic, Robert246858 26.02
467 Kolev, Atanas246754 24.21
468 Filipenko, Alexander V246762 42.57
469 Legky, Nikolay A246759 36.47
470 Solozhenkin, Evgeniy246761 25.16
471 Szekely, Peter246653 36.64
472 Tisdall, Jonathan D246651 33.09
473 Rukavina, Josip246664 48.84
474 Espig, Lutz246653 42.73
475 Prandstetter, Eduard246658 42.79
476 Komljenovic, Davor246555 47.24
477 Paehtz, Thomas Sr246452 35.07
478 Semkov, Semko246458 31.59
479 Boissonet, Carlos P246459 22.72
480 Lagunow, Alexander246462 24.21
481 Lein, Anatoly246457 60.51
482 Lanc, Alois246458 43.62
483 Schmidt, Wlodzimierz246450 48.47
484 Topalov, Veselin246355 16.54
485 Levitt, Jonathan246353 28.32
486 Galdunts, Sergey246357 26.70
487 Marinkovic, Ivan246353 24.21
488 Orsag, Milan246367 27.73
489 Howell, James C246353 24.37
490 Nasybullin, Vladislav246271
491 Root, Douglas246268 28.63
492 Giardelli, Sergio C246263 36.26
493 Vilela, Jose Luis246157 38.53
494 Dragomarezkij, Evgeni246158 38.70
495 Mednis, Edmar J246155 54.52
496 Jasnikowski, Zbigniew246051 36.38
497 Moroz, Alexander246060 30.70
498 Efimov, Igor245954 31.04
499 Antunes, Antonio245952 29.65
500 Fokin, Sergey245966 35.95

These ratings, calculated as of September 30, 1991, incorporate all games (against rated opponents) played in the time between October 1, 1990 and September 30, 1991, along with the ratings that were already calculated as of September 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 September 30, 1991. This represents the player's estimated strength on October 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 October 1, 1991. The +/- value represents the standard deviation of that estimate; the player's true strength on October 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 October 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 September 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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