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Top 10 active players as of November 30, 1989


Top 500 active players as of November 30, 1989

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28404873.1% #226.63
2 Karpov, Anatoly E27884819.2% #438.52
3 Timman, Jan H2729482.2% #1437.95
4 Ivanchuk, Vassily2706491.0% #2320.70
5 Salov, Valery B2700490.7% #2725.51
6 Short, Nigel D2696470.5% #2824.50
7 Beliavsky, Alexander G2695480.5% #2935.95
8 Korchnoi, Viktor L2692470.4% #3058.69
9 Gurevich, Mikhail N2686490.4% #3430.77
10 Andersson, Ulf2671480.1% #4538.43
11 Dolmatov, Sergey V2670490.1% #4730.78
12 Hübner, Robert2665480.1% #5041.07
13 Gelfand, Boris2665490.1% #5121.43
14 Lputian, Smbat G2664490.1% #5231.79
15 Dautov, Rustem2662510.1% #5424.01
16 Ljubojevic, Ljubomir2661470.1% #5339.08
17 Portisch, Lajos2659480.1% #5752.65
18 Speelman, Jonathan S2659480.1% #5633.16
19 Ehlvest, Jaan2658480.1% #5727.13
20 Jussupow, Artur M265648 #5829.80
21 Dreev, Alexey265649 #6020.86
22 Polugaevsky, Lev A2655500.1% #6055.03
23 Azmaiparashvili, Zurab A2654510.1% #6229.70
24 Yudasin, Leonid G2649500.1% #6630.31
25 Tal, Mikhail2647480.1% #6753.06
26 Tukmakov, Vladimir B264649 #6943.71
27 Ribli, Zoltán264448 #7038.23
28 Chernin, Alexander M264448 #7029.73
29 Vaganian, Rafael A264248 #7138.12
30 Vladimirov, Evgeny Y2641530.1% #7832.86
31 Gulko, Boris F264049 #7542.81
32 Dvoiris, Semen I263952 #7831.08
33 Christiansen, Larry M263850 #7833.43
34 Vyzmanavin, Alexey263752 #7929.91
35 Georgiev, Kiril263749 #7824.01
36 Gavrikov, Victor N263749 #7832.34
37 Yurtaev, Leonid2637530.1% #8130.58
38 Sveshnikov, Evgeny E263653 #8139.80
39 Nunn, John D M263448 #8034.60
40 Aseev, Konstantin N263252 #8529.11
41 Nikolic, Predrag263048 #8529.22
42 Timoshchenko, Gennady262950 #8740.59
43 Bareev, Evgeny262750 #9123.02
44 Agdestein, Simen262650 #9222.54
45 Seirawan, Yasser262648 #9029.68
46 Khalifman, Alexander262549 #9123.87
47 Sax, Gyula262048 #9638.45
48 Eingorn, Viacheslav S261749 #9933.01
49 Dorfman, Iosif D261751 #10237.58
50 Sokolov, Andrey Y261349 #10526.69
51 Epishin, Vladimir261350 #10624.38
52 Pigusov, Evgeny260951 #11228.66
53 Rozentalis, Eduardas260850 #11226.51
54 Dzindzichashvili, Roman Y260852 #11345.57
55 Psakhis, Lev B260748 #11031.00
56 Anand, Viswanathan260751 #11319.96
57 Smirin, Ilia260650 #11421.86
58 Lerner, Konstantin Z260550 #11439.76
59 Spassky, Boris V260549 #11552.83
60 Dokhoian, Yury260250 #11825.09
61 Kuzmin, Gennady P260255 #12243.86
62 Balashov, Yury S260049 #12040.72
63 Smyslov, Vassily V259951 #12168.68
64 Razuvaev, Yury S259951 #12244.14
65 Oll, Lembit259949 #12123.60
66 deFirmian, Nicholas E259650 #12432.34
67 Krasenkow, Michal259451 #12726.04
68 Novikov, Igor A259250 #12827.52
69 Malaniuk, Vladimir P259248 #12832.36
70 Torre, Eugenio259151 #13138.07
71 Hort, Vlastimil259049 #13045.88
72 Neverov, Valery259051 #13225.44
73 Kharitonov, Andrey Y259050 #13230.65
74 Ivanov, Alexander V258952 #13433.58
75 Kveinys, Aloyzas258960 #14027.39
76 Ionov, Sergey258864 #14327.90
77 Vasiukov, Evgeny A258852 #13556.73
78 Rashkovsky, Nukhim N258751 #13543.62
79 Yermolinsky, Alex V258654 #13931.63
80 Smagin, Sergey258550 #13631.23
81 Goldin, Alexander258550 #13724.76
82 Romanishin, Oleg M258448 #13637.89
83 Taimanov, Mark E258457 #14363.81
84 Miles, Anthony J258448 #13734.60
85 Ubilava, Elizbar E258352 #14039.26
86 Naumkin, Igor258254 #14324.30
87 Ftácnik, Lubomír258149 #13932.08
88 Kruppa, Yuri258156 #14525.44
89 Fedorowicz, John P258149 #14031.18
90 Shirov, Alexei258152 #14317.40
91 van der Wiel, John T H258048 #14130.31
92 Bikhovsky, Avigdor I257966 #15334.73
93 Pétursson, Margeir257948 #14229.79
94 Hjartarson, Jóhann257848 #14226.81
95 Sorokin, Maxim257858 #14921.86
96 Vaisser, Anatoli257851 #14540.73
97 Kamsky, Gata257653 #14815.49
98 Larsen, Bent257649 #14654.74
99 Olafsson, Helgi257549 #14633.29
100 Benjamin, Joel L257449 #14725.72
101 Hansen, Curt257250 25.20
102 Akopian, Vladimir257251 17.97
103 Nogueiras, Jesus257148 30.37
104 Hulak, Krunoslav257150 38.51
105 Chandler, Murray G257149 29.65
106 Kovalev, Andrei257160 28.06
107 Kholmov, Ratmir D257052 64.55
108 Kalinitschew, Sergey256962 33.82
109 Arkhipov, Sergey256957 35.44
110 Ulibin, Mikhail256952 18.50
111 Karlsson, Lars256951 34.38
112 Petrienko, Vladimir256964 34.72
113 Tseshkovsky, Vitaly V256750 45.18
114 Makarichev, Sergey Y256755 36.04
115 Kudrin, Sergey256750 30.23
116 Sosonko, Gennadi256652 46.53
117 Smejkal, Jan256550 43.69
118 Pintér, József256451 36.06
119 Shneider, Aleksandr256456 27.52
120 Gorelov, Sergey G256259 32.28
121 Lobron, Eric256149 29.56
122 Khenkin, Igor256154 21.69
123 Didishko, Vereslav256174 40.64
124 Kengis, Edvins256054 30.63
125 Kuzmin, Alexey255953 26.73
126 Giorgadze, Giorgi255953 25.14
127 Duer, Arne255866 30.39
128 Glek, Igor V255852 28.06
129 Janjgava, Lasha255853 19.57
130 Huzman, Alexander255852 27.64
131 Sturua, Zurab255767 30.48
132 Shabanov, Yury F255768 52.05
133 Sokolov, Ivan255649 21.46
134 Panchenko, Alexander N255656 36.15
135 Kavalek, Lubomir255562 46.31
136 Todorcevic, Miodrag255550 49.05
137 Yakovich, Yuri255456 26.99
138 Komarov, Dimitri255458 20.99
139 Knaak, Rainer F255451 36.70
140 Adams, Michael255350 18.04
141 Sher, Miron N255359 37.42
142 Bönsch, Uwe255350 31.12
143 Spraggett, Kevin B255351 35.05
144 Timoshenko, Georgy255254 23.50
145 Kurajica, Bojan255269 42.04
146 Mikhalchishin, Adrian B255250 35.03
147 Morovic Fernández, Iván E255254 26.68
148 Kindermann, Stefan255048 29.92
149 Wahls, Matthias255050 21.84
150 Geller, Efim P255050 64.74
151 Quinteros, Miguel A254964 41.92
152 Kaidanov, Gregory S254952 30.13
153 Tiviakov, Sergei254961 16.79
154 Dlugy, Maxim254949 23.84
155 Lalic, Bogdan254650 25.73
156 Kozlov, V.254661
157 Browne, Walter S254651 40.89
158 Najdorf, Miguel254663 79.62
159 Hodgson, Julian M254548 26.35
160 Mestel, A Jonathan254557 32.71
161 Murey, Yakov254551 48.33
162 Chekhov, Valery A254450 34.01
163 Soppe, Guillermo254462 29.20
164 Shereshevsky, Mikhail I254374 39.61
165 Baburin, Alexander254359 22.78
166 Kramnik, Vladimir254361 14.43
167 Magomedov, Magaram254359 23.53
168 Gaprindashvili, Nona254163 48.57
169 Moskalenko, Viktor254153 28.98
170 Barua, Dibyendu254155 23.09
171 Mokrý, Karel254051 30.81
172 Magerramov, Elmar S254055 31.64
173 Panno, Oscar R254053 54.70
174 Govedarica, Radovan254070 41.79
175 Cvitan, Ognjen254050 28.14
176 Suba, Mihai254051 42.50
177 Greenfeld, Alon253952 25.62
178 Adorján, András253950 39.66
179 Groszpeter, Attila253850 29.47
180 Kochiev, Alexander253853 33.68
181 Kupreichik, Viktor D253850 40.41
182 Lanka, Zigurds253857 29.52
183 Mnatsakanian, Eduard A253871 50.98
184 Anastasian, Ashot253853 25.37
185 Bjelajac, Milan253769 41.71
186 Popovic, Petar253749 30.79
187 Rachels, Stuart253758 20.18
188 Uhlmann, Wolfgang253652 54.67
189 Karpman, Vadim253655 24.55
190 Donchev, Dimitar I253556 31.36
191 Liberzon, Vladimir M253463 52.69
192 Rogers, Ian253450 29.43
193 Savon, Vladimir A253453 49.18
194 Ivanovic, Božidar253451 43.27
195 Bass, Leonid253362 32.50
196 Van der Sterren, Paul253349 33.70
197 Orlov, Georgi253259
198 Henley, Ron W253273 32.98
199 Gheorghiu, Florin253152 45.65
200 Zlotnik, Boris A253062 43.12
201 Inkiov, Ventzislav253051 33.53
202 Ruban, Vadim252952 25.46
203 Bagirov, Vladimir K252953 53.29
204 Adianto, Utut252967 24.70
205 Zapata, Alonso252851 31.27
206 Barlov, Dragan252851 32.83
207 Darga, Klaus V252865 55.77
208 Pfleger, Helmut252858 46.32
209 Rodriguez, Amador252750 33.23
210 Velimirovic, Dragoljub252751 47.55
211 Cebalo, Mišo252649 44.82
212 King, Daniel J252649 26.26
213 Gipslis, Aivars252660 52.81
214 Cámpora, Daniel H252550 32.42
215 Minasian, Artashes252559 22.86
216 Csom, István252550 49.49
217 Dizdar, Goran252451 30.98
218 Savchenko, Stanislav252354 22.86
219 Gufeld, Eduard E252355 53.70
220 Milos, Gilberto252354 26.08
221 Chiburdanidze, Maia G252353 28.87
222 Kovacevic, Vladimir252250 47.68
223 Yrjola, Jouni252252 30.10
224 Mochalov, Evgeny V252271 38.09
225 Rohde, Michael A252252 30.26
226 Horvath, Jozsef252250 25.30
227 Veingold, Aleksander252267 36.14
228 Wilder, Michael252250 27.20
229 Faragó, Iván252149 43.66
230 Gofshtein, Leonid D252165 36.61
231 Hellers, Ferdinand252151 20.84
232 Damljanovic, Branko252049 28.45
233 Ye Jiangchuan252059 29.03
234 Zaichik, Gennady L252051 32.80
235 Renet, Olivier251949 24.94
236 Marjanovic, Slavoljub251950 34.90
237 Kuporosov, Viktor251871 28.18
238 Polgar, Zsuzsa251750 20.61
239 Machulsky, Anatoly D251757 33.18
240 Franco Ocampos, Zenon251754 33.55
241 Ninov, Kiril251753 21.14
242 Bronstein, David I251658 65.78
243 Rausis, Igors251662 28.65
244 Bischoff, Klaus251649 28.47
245 Arnason, Jon L251550 29.05
246 Illescas Cordoba, Miguel251551 23.98
247 Zagrebelny, Sergey251559
248 Kožul, Zdenko251550 23.52
249 Reyes, Juan251463 26.59
250 Lukin, Andrei M251455 41.26
251 Sahovic, Dragutin251462 49.31
252 Frias, Victor J251457 33.80
253 Ye Rongguang251261 26.16
254 Simic, Radoslav251156 41.47
255 London, Dimitri251165 27.02
256 Gruenberg, Hans Ulrich251151 33.89
257 Rivas Pastor, Manuel251053 29.38
258 Hebden, Mark251051 31.79
259 Tseitlin, Mark D251060 46.19
260 Guseinov, Aidyn250962 37.91
261 Kishnev, Sergey250966 33.08
262 Gligoric, Svetozar250954 66.83
263 Georgadze, Tamaz V250962 42.06
264 Lau, Ralf250850 30.11
265 Gruenfeld, Yehuda250753 33.76
266 Yuneev, Alexey250657
267 Hickl, Joerg250550 24.62
268 Filipenko, Alexander V250466 40.74
269 Mortensen, Erling250452 34.65
270 Sellos, Didier250459 32.78
271 Stoica, Valentin250368 39.79
272 Byrne, Robert E250362 61.61
273 Kiselev, Sergey250256 28.21
274 Lein, Anatoly250254 58.67
275 Watson, William N250249 27.62
276 Espig, Lutz250154 40.90
277 Malisauskas, Vidmantas250155 26.32
278 Gurevich, Vladimir250164 30.32
279 Alburt, Lev O250152 44.27
280 Kotronias, Vasilios250150 25.26
281 Mirkovic, Slobodan250166 31.34
282 Kantsler, Boris250157 27.62
283 Graf, Alexander250057 27.26
284 García Gonzáles, Guillermo250052 35.97
285 Rodriguez Vargas, Orestes249958 46.40
286 Petrosian, Arshak B249950 35.95
287 Wojtkiewicz, Aleksander249853 26.87
288 Wolff, Patrick G249852 21.79
289 Fokin, Sergey249864 34.13
290 Xu Jun249757 27.20
291 Foisor, Ovidiu249757 30.65
292 Nikolac, Juraj249765 57.61
293 Zhuravliov, Valerij249768 50.96
294 Makarov, Marat249757 26.56
295 Lukacs, Peter249650 39.39
296 Wedberg, Tom249650 36.01
297 Hertneck, Gerald249654 26.20
298 Stohl, Igor249551 25.18
299 Piket, Jeroen249549 20.84
300 Zilberman, Nathan R249564 49.57
301 Meister, Yakov249565 34.22
302 Sadler, Matthew249558 15.54
303 Vera, Reynaldo249554 28.90
304 Piskov, Yury249556 28.13
305 Andrianov, Nikolai249467 27.94
306 Barbero, Gerardo F249453 28.27
307 Loginov, Valery A249458 33.96
308 Tisdall, Jonathan D249350 31.26
309 Basin, Leonid249356 32.02
310 Belov, Igor249359
311 Seret, Jean Luc249361
312 Pytel, Krzysztof249266 44.54
313 Nijboer, Friso249253 24.51
314 Reshevsky, Samuel H249261 78.01
315 Gutman, Lev249150 44.18
316 Tolnai, Tibor249150 25.19
317 Antunes, Antonio249157 27.82
318 Brunner, Lucas249050 22.50
319 Jansa, Vlastimil249051 47.01
320 Ivanov, Igor V249052 42.89
321 Schussler, Harry248952 32.43
322 Drasko, Milan248950 26.98
323 Zilberstein, Valery I248971 46.63
324 Ornstein, Axel248861 37.60
325 Pekarek, Ales248852 27.95
326 Efimov, Igor248862 29.20
327 Gomez Baillo, Jorge H248759 30.61
328 Norwood, David248755 21.16
329 Tunik, Gennady248756 36.51
330 Meduna, Eduard248650 39.22
331 Unzicker, Wolfgang248658 64.43
332 Meister, Peter248656 23.43
333 Vitolinš, Alvis248658 43.46
334 Tseitlin, Mikhail S248553 42.45
335 Ivkov, Borislav248553 56.05
336 Granda Zuńiga, Julio E248552 22.76
337 Popchev, Milko248453 25.05
338 Titov, German248458 26.59
339 Plaskett, Jim248353 29.70
340 Arbakov, Valentin248360 37.84
341 Velikov, Petar248353 38.67
342 Tischbierek, Raj248353 27.18
343 Legky, Nikolay A248359 34.63
344 Matulovic, Milan248357 54.47
345 Mainka, Romuald248253 26.54
346 Rechlis, Gad248256 22.82
347 Hansen, Lars Bo248250 21.18
348 Murshed, Niaz248158 23.55
349 Malevinsky, Alexander A248168 39.76
350 Skembris, Spyridon248152 31.77
351 Akhmilovskaya, Elena248165
352 Vogt, Lothar H248051 37.87
353 Palatnik, Semen A247954 39.68
354 Okhotnik, Vladimir247958 39.76
355 Fernandez Garcia, Jose Luis247959 35.57
356 Kouatly, Bachar247952 31.74
357 Rytshagov, Mikhail247964 22.05
358 Ziatdinov, Raset247967 30.92
359 Womacka, Mathias247966 23.43
360 Dueball, Juergen247870 44.67
361 Shabalov, Alexander247852 22.22
362 Sideif Sade, Fikret I247864 37.91
363 Schlosser, Philipp247855 21.28
364 Ree, Hans247859 45.21
365 Garcia Palermo, Carlos247853 35.99
366 Rukavina, Josip247763 47.00
367 Sznapik, Aleksander247751 38.80
368 Flear, Glenn C247750 30.80
369 Lombardy, William J247775 51.98
370 Sunye Neto, Jaime247758 32.58
371 Georgiev, Krum247753 31.52
372 Ionescu, Constantin247656 31.22
373 Hazai, Laszlo247653 36.46
374 Levitt, Jonathan247651 26.49
375 Kraidman, Yair247568 57.08
376 Blatny, Pavel247550 21.44
377 Ioseliani, Nana247556 27.80
378 Marin, Mihail247555 24.61
379 Brooks, Michael A247461 28.62
380 Trapl, Jindrich247473 47.68
381 Kosten, Anthony C247449 31.35
382 Braga, Fernando247457 31.39
383 Kallai, Gabor247356 30.77
384 Řgaard, Leif247374 37.90
385 Rubinetti, Jorge A247359 44.66
386 Yuferov, Sergey N247266 43.98
387 Lukov, Valentin247257 33.96
388 Brodsky, Michail247262 20.68
389 Valkesalmi, Kimmo247255 28.58
390 Motwani, Paul247257 27.46
391 Serper, Grigory247253 20.21
392 Tempone, Marcelo247163 27.23
393 Ermenkov, Evgenij247154 40.17
394 Ghinda, Mihail Viorel247160 40.35
395 Martinovic, Slobodan247056 44.35
396 Padevsky, Nikola B246962 56.50
397 Schmidt, Wlodzimierz246949 46.64
398 Dzuban, Oleg I246965
399 Gleizerov, Evgeny246965 26.69
400 Tringov, Georgy P246961 52.73
401 Rogulj, Branko246865 38.33
402 Petkevich, Jusefs246866 48.94
403 Klinger, Josef246850 22.48
404 Vukic, Milan246858 46.28
405 Szekely, Peter246855 34.81
406 Saltaev, Mihail246762 27.03
407 Spacek, Petr246771 35.76
408 Abramovic, Boško246750 38.79
409 Palac, Mladen246761 18.78
410 Mascarinas, Rico246658 36.74
411 Vallifuoco, Giacomo246666 32.57
412 Schoenthier, Frank246574 31.03
413 Ilincic, Zlatko246552 21.55
414 Temirbaev, Serik246561
415 Kogan, Boris246570
416 Szabó, László246473 72.70
417 Sanna, Gianlazzaro246474 29.63
418 Djukic, Zeljko246470 30.47
419 Arkell, Keith C246452 28.89
420 Hausner, Ivan246455 37.62
421 Moroz, Alexander246459 28.87
422 Vokác, Marek246353 30.98
423 Wirthensohn, Heinz246357 38.57
424 Marangunic, Srdjan246268 46.08
425 Knezevic, Milorad246160 53.08
426 Schmittdiel, Eckhard246150 29.55
427 Avshalumov, Alex246159 25.74
428 Rajkovic, Dusan246152 47.45
429 Vilela, Jose Luis246157 36.70
430 Varavin, Viktor246065 22.52
431 Klundt, Klaus246061 47.92
432 Howell, James C245955 22.54
433 Davies, Nigel R245949 29.33
434 Cramling, Pia245952 26.60
435 Piasetski, Leon David245970
436 Lin Ta245865 26.83
437 Khmelnitsky, Igor N245866 21.27
438 Ledger, Andrew245867 20.52
439 Frolov, Artur245858 19.33
440 Gruenenwald, Joerg245869 24.49
441 Djuric, Stefan245750 34.34
442 McKay, Roderick M245766 37.80
443 Kapengut, Albert Z245770 45.40
444 Lechtynsky, Jiri245753 42.01
445 Lima, Darcy245760 27.52
446 Cabrilo, Goran245752 31.41
447 Sigurjónsson, Gudmundur245670 42.18
448 Gallagher, Joseph G245652 25.57
449 Orso, Miklos245562 33.48
450 Bilek, István245561 57.30
451 Ernst, Thomas245551 29.29
452 Ardiansyah, Haji245571 37.98
453 Ryskin, Alexander245475 26.88
454 Ekstroem, Roland245457 33.52
455 Kuijf, Marinus245452 29.80
456 Mohr, Stefan245450 22.11
457 Nemet, Ivan245457 46.63
458 Strikovic, Aleksa245353 28.55
459 Mednis, Edmar J245355 52.69
460 Grivas, Efstratios245355 23.67
461 Luther, Thomas245354 20.07
462 Staniszewski, Piotr245356 23.24
463 Hecht, Hans-Joachim245366 50.84
464 Barbulescu, Dan245367 25.44
465 Negulescu, Adrian245261 28.47
466 Veinger, Itzhak245269 51.40
467 Kiik, Kalle245260 26.80
468 Sherbakov, Ruslan245266 20.21
469 Popov, Luben245270 53.84
470 Janovsky, Sergey245261 29.79
471 Hawelko, Marek245153 30.30
472 Pribyl, Josef245056 42.13
473 Brestian, Egon245057 25.34
474 Djurhuus, Rune245055 19.85
475 Sendera, Jaroslaw245073 24.59
476 Gurgenidze, Bukhuti I244963 56.05
477 Cramling, Dan244969 30.82
478 Verduga, Denis Homero244961
479 Martin del Campo, Roberto244956
480 Ostermeyer, Peter244960 46.13
481 Nikolic, Zivoslav244853 35.96
482 Lagunow, Alexander244873 22.38
483 Dizdarevic, Emir244853 31.66
484 Karolyi, Tibor Jr244852 28.04
485 Neckar, Lubomir244871 39.33
486 Gurevich, Dmitry244750 33.22
487 Lutz, Christopher244754 18.77
488 Semkov, Semko244756 29.75
489 Plachetka, Jan244650 44.78
490 Kaminski, Uwe244656 27.29
491 Marinkovic, Ivan244555 22.38
492 Buecker, Peter244562
493 Horvath, Tamas244557 38.10
494 Schulte, Oliver244566 20.94
495 Ostojic, Predrag244567 51.77
496 Krnic, Zdenko244561 42.16
497 Stempin, Pawel244550 30.38
498 Cifuentes Parada, Roberto244454 31.94
499 Semeniuk, Alexander A244464 37.22
500 Renman, Nils Gustaf244462

These ratings, calculated as of November 30, 1989, incorporate all games (against rated opponents) played in the time between December 1, 1988 and November 30, 1989, along with the ratings that were already calculated as of November 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 November 30, 1989. This represents the player's estimated strength on December 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 December 1, 1989. The +/- value represents the standard deviation of that estimate; the player's true strength on December 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 December 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 November 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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