< December 31, 1988     Back to date list    February 28, 1989 >

Top 10 active players as of January 31, 1989

  #  

Player Rating +/-
1 Kasparov, Garry K284048
2 Karpov, Anatoly E280347
3 Ivanchuk, Vassily270049
4 Beliavsky, Alexander G269948
5 Short, Nigel D269847
6 Salov, Valery B269351
7 Timman, Jan H269147
8 Tal, Mikhail268348
9 Gelfand, Boris267852
10 Speelman, Jonathan S267648

About these ratings

Top 500 active players as of January 31, 1989

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28404867.8% #225.80
2 Karpov, Anatoly E28034727.3% #337.69
3 Ivanchuk, Vassily2700490.7% #2719.87
4 Beliavsky, Alexander G2699480.6% #2735.12
5 Short, Nigel D2698470.5% #2723.66
6 Salov, Valery B2693510.5% #3124.68
7 Timman, Jan H2691470.3% #3137.13
8 Tal, Mikhail2683480.2% #3752.23
9 Gelfand, Boris2678520.3% #4320.60
10 Speelman, Jonathan S2676480.1% #4232.33
11 Korchnoi, Viktor L2669470.1% #4757.86
12 Andersson, Ulf2669480.1% #4837.59
13 Yudasin, Leonid G2668510.2% #4929.48
14 Hübner, Robert2667490.1% #4940.23
15 Tukmakov, Vladimir B2667490.1% #4942.88
16 Portisch, Lajos2666480.1% #5051.82
17 Jussupow, Artur M2665480.1% #5128.96
18 Ehlvest, Jaan2664480.1% #5226.30
19 Lputian, Smbat G265849 #5730.96
20 Ljubojevic, Ljubomir2657470.1% #5638.24
21 Ribli, Zoltán265048 #6337.40
22 Gurevich, Mikhail N264948 #6629.94
23 Chernin, Alexander M264749 #6928.90
24 Eingorn, Viacheslav S264450 #7132.18
25 Nikolic, Predrag264348 #7028.39
26 Vaganian, Rafael A264348 #7137.29
27 Psakhis, Lev B264348 #7130.17
28 Spassky, Boris V264149 #7452.00
29 Dreev, Alexey264151 #7520.03
30 Polugaevsky, Lev A264050 #7554.20
31 Dolmatov, Sergey V264049 #7429.94
32 Nunn, John D M264048 #7533.77
33 Khalifman, Alexander263949 #7623.04
34 Gavrikov, Victor N263649 #7931.51
35 Agdestein, Simen263351 #8221.71
36 Dvoiris, Semen I2633550.1% #8730.24
37 Dautov, Rustem263253 #8623.17
38 Gulko, Boris F263148 #8441.97
39 Dokhoian, Yury263150 #8524.26
40 Sveshnikov, Evgeny E262953 #9038.96
41 Azmaiparashvili, Zurab A262853 #9028.87
42 Malaniuk, Vladimir P262748 #8931.53
43 Torre, Eugenio262650 #9137.24
44 Vladimirov, Evgeny Y262554 #9532.03
45 Kovalev, Andrei262558 #9827.23
46 Seirawan, Yasser262549 #9128.85
47 Sax, Gyula262249 #9437.62
48 Sokolov, Andrey Y262148 #9525.86
49 Georgiev, Kiril262049 #9623.17
50 Hjartarson, Jóhann261948 #9625.97
51 Romanishin, Oleg M261948 #9637.06
52 Dorfman, Iosif D261851 #10036.75
53 Yurtaev, Leonid261753 #10229.75
54 Vyzmanavin, Alexey261553 #10529.08
55 Hort, Vlastimil261249 #10545.05
56 Balashov, Yury S261149 #10739.88
57 Smyslov, Vassily V261051 #10767.85
58 Smirin, Ilia261052 #11021.03
59 Bareev, Evgeny260851 #11122.19
60 Smagin, Sergey260850 #11030.40
61 Razuvaev, Yury S260351 #11743.31
62 Christiansen, Larry M260349 #11632.59
63 Ubilava, Elizbar E260255 #12138.43
64 Naumkin, Igor260255 #12123.47
65 Pigusov, Evgeny260051 #12027.83
66 Nogueiras, Jesus259748 #12129.54
67 Lerner, Konstantin Z259550 #12438.92
68 Larsen, Bent259549 #12453.91
69 Kruppa, Yuri259458 #13224.61
70 Kharitonov, Andrey Y259450 #12729.82
71 Ivanov, Alexander V259358 #13232.75
72 Anand, Viswanathan259251 #12919.14
73 Aseev, Konstantin N259253 #13028.28
74 Rozentalis, Eduardas259251 #12925.68
75 Kuzmin, Gennady P259056 #13443.03
76 Kveinys, Aloyzas258961 #13926.56
77 Vaisser, Anatoli258852 #13439.90
78 Chandler, Murray G258848 #13228.82
79 van der Wiel, John T H258548 #13529.48
80 Panchenko, Alexander N258556 #14035.32
81 Goldin, Alexander258452 #13823.92
82 Kamsky, Gata258457 #14114.66
83 Yermolinsky, Alex V258352 #13930.80
84 Kupreichik, Viktor D258350 #13839.58
85 Sorokin, Maxim258361 #14521.02
86 Timoshchenko, Gennady258251 #13939.76
87 Murey, Yakov258252 #14047.49
88 Huzman, Alexander258252 #14126.81
89 Oll, Lembit258151 #14022.77
90 Tseshkovsky, Vitaly V258050 #14144.35
91 Giorgadze, Giorgi257955 #14524.31
92 Pintér, József257750 #14435.23
93 Krasenkow, Michal257758 #15025.21
94 Miles, Anthony J257649 #14433.77
95 Kholmov, Ratmir D257652 #14663.72
96 Rashkovsky, Nukhim N257551 #14742.79
97 Sosonko, Gennadi257451 #14745.70
98 Ionov, Sergey257460 #15327.06
99 Dzindzichashvili, Roman Y257454 #15044.74
100 deFirmian, Nicholas E257351 #14831.51
101 Dlugy, Maxim257350 23.01
102 Makarichev, Sergey Y257157 35.20
103 Adorján, András257150 38.83
104 Shabanov, Yury F257068 51.22
105 Podgaets, Mikhail Y257072 41.52
106 Ftácnik, Lubomír256949 31.25
107 Gorelov, Sergey G256864 31.45
108 Kuzmin, Alexey256657 25.90
109 Glek, Igor V256655 27.23
110 Epishin, Vladimir256655 23.55
111 Fedorowicz, John P256549 30.34
112 Duer, Arne256569 29.56
113 Todorcevic, Miodrag256552 48.22
114 Kavalek, Lubomir256458 45.48
115 Shirov, Alexei256457 16.57
116 Hulak, Krunoslav256451 37.68
117 Tseitlin, Mark D256474 45.36
118 Darga, Klaus V256368 54.93
119 Chekhov, Valery A256350 33.18
120 Neverov, Valery256354 24.61
121 Karlsson, Lars256351 33.55
122 Ulibin, Mikhail256353 17.67
123 Shneider, Aleksandr256359 26.69
124 Didishko, Vereslav256274 39.81
125 Lobron, Eric256249 28.73
126 Vasiukov, Evgeny A256254 55.90
127 Browne, Walter S256251 40.06
128 Orlov, Georgi256262
129 Arkhipov, Sergey256157 34.61
130 Geller, Efim P256151 63.91
131 Mikhalchishin, Adrian B256150 34.20
132 Hansen, Curt256049 24.37
133 Spraggett, Kevin B256054 34.22
134 Sherbakov, Vitaly S256068 33.62
135 Pétursson, Margeir255849 28.95
136 Zaichik, Gennady L255851 31.96
137 Bikhovsky, Avigdor I255769 33.90
138 Hellers, Ferdinand255651 20.01
139 Kaidanov, Gregory S255550 29.30
140 Kudrin, Sergey255551 29.40
141 Janjgava, Lasha255552 18.74
142 Greenfeld, Alon255551 24.79
143 Kochiev, Alexander255454 32.85
144 Benjamin, Joel L255249 24.89
145 Taimanov, Mark E255268 62.98
146 Barua, Dibyendu255154 22.26
147 Kurajica, Bojan255162 41.21
148 Arnason, Jon L255050 28.22
149 Lanka, Zigurds254963 28.69
150 Lalic, Bogdan254852 24.90
151 Mestel, A Jonathan254854 31.88
152 Cebalo, Mišo254851 43.98
153 Bagirov, Vladimir K254755 52.46
154 Kindermann, Stefan254648 29.09
155 Smejkal, Jan254551 42.86
156 Moskalenko, Viktor254554 28.16
157 Csom, István254452 48.66
158 Olafsson, Helgi254449 32.46
159 Rogers, Ian254349 28.60
160 Sokolov, Ivan254350 20.63
161 Novikov, Igor A254251 26.69
162 Knaak, Rainer F254149 35.87
163 Liberzon, Vladimir M254164 51.86
164 Najdorf, Miguel254159 78.79
165 Franco Ocampos, Zenon254159 32.72
166 Timoshenko, Georgy254061 22.66
167 Ivanovic, Božidar253952 42.44
168 Yakovich, Yuri253956 26.17
169 Mokrý, Karel253951 29.98
170 Veingold, Aleksander253868 35.31
171 Pfleger, Helmut253858 45.48
172 Flear, Glenn C253750 29.96
173 Reshevsky, Samuel H253764 77.18
174 Kengis, Edvins253756 29.80
175 Gheorghiu, Florin253751 44.82
176 Bönsch, Uwe253649 30.29
177 Hodgson, Julian M253649 25.52
178 Morovic Fernández, Iván E253655 25.85
179 Gruenfeld, Yehuda253654 32.92
180 Savchenko, Stanislav253655 22.03
181 Bronstein, David I253558 64.94
182 Quinteros, Miguel A253460 41.09
183 Chiburdanidze, Maia G253451 28.04
184 Cámpora, Daniel H253350 31.59
185 Cvitan, Ognjen253350 27.31
186 Tischbierek, Raj253352 26.35
187 Antunes, Antonio253357 26.98
188 Bischoff, Klaus253250 27.64
189 Groszpeter, Attila253250 28.64
190 Popovic, Petar253150 29.96
191 Uhlmann, Wolfgang253150 53.84
192 Karpman, Vadim253160 23.72
193 Bjelajac, Milan253169 40.88
194 Ruban, Vadim253154 24.63
195 Kiselev, Sergey253057 27.38
196 Adams, Michael252953 17.20
197 Schussler, Harry252853 31.60
198 Byrne, Robert E252760 60.78
199 Rohde, Michael A252752 29.43
200 Watson, William N252749 26.79
201 Adianto, Utut252760 23.87
202 Zagrebelny, Sergey252760
203 Graf, Alexander252656 26.43
204 Kovacevic, Vladimir252552 46.85
205 Suba, Mihai252550 41.66
206 Rodriguez, Amador252549 32.40
207 Marjanovic, Slavoljub252450 34.07
208 Gaprindashvili, Nona252260 47.74
209 Soppe, Guillermo252263 28.37
210 Wedberg, Tom252250 35.18
211 Anastasian, Ashot252156 24.54
212 Sahovic, Dragutin252162 48.48
213 Mirkovic, Slobodan252069 30.51
214 Inkiov, Ventzislav252051 32.70
215 Panno, Oscar R252054 53.87
216 Velimirovic, Dragoljub251951 46.72
217 Faragó, Iván251949 42.83
218 Barbero, Gerardo F251953 27.44
219 Gipslis, Aivars251857 51.97
220 Xu Jun251854 26.37
221 Dizdar, Goran251851 30.16
222 King, Daniel J251850 25.42
223 Ninov, Kiril251852 20.31
224 Donchev, Dimitar I251856 30.53
225 García Gonzáles, Guillermo251851 35.14
226 Akopian, Vladimir251653 17.15
227 Baburin, Alexander251661 21.94
228 London, Dimitri251674 26.19
229 Govedarica, Radovan251667 40.96
230 Seret, Jean Luc251662
231 Lukin, Andrei M251658 40.42
232 Serper, Grigory251653 19.38
233 Zapata, Alonso251550 30.44
234 Basin, Leonid251556 31.19
235 Yuferov, Sergey N251469 43.16
236 Gligoric, Svetozar251455 65.99
237 Simic, Radoslav251457 40.64
238 Moroz, Alexander251362 28.04
239 Sunye Neto, Jaime251358 31.74
240 Petrosian, Arshak B251352 35.12
241 Petrienko, Vladimir251268 33.89
242 Vitolinš, Alvis251167 42.63
243 Frias, Victor J251056 32.97
244 Nikolac, Juraj250959 56.77
245 Horvath, Jozsef250850 24.47
246 Andrianov, Nikolai250767 27.11
247 Renet, Olivier250751 24.11
248 Savon, Vladimir A250759 48.35
249 Georgadze, Tamaz V250763 41.23
250 Efimov, Igor250662 28.37
251 Illescas Cordoba, Miguel250652 23.16
252 Van der Sterren, Paul250649 32.87
253 Milos, Gilberto250554 25.25
254 Ivkov, Borislav250455 55.22
255 Ivanov, Igor V250455 42.06
256 Foisor, Ovidiu250353 29.82
257 Jansa, Vlastimil250350 46.18
258 Abramovic, Boško250350 37.96
259 Guseinov, Aidyn250357 37.08
260 Wilder, Michael250351 26.37
261 Ostermeyer, Peter250361 45.30
262 Mortensen, Erling250253 33.82
263 Garcia Palermo, Carlos250151 35.16
264 Cifuentes Parada, Roberto250155 31.11
265 Gutman, Lev250151 43.35
266 Unzicker, Wolfgang250158 63.60
267 Ye Jiangchuan250060 28.20
268 Kosic, Dragan250060 18.95
269 Kantsler, Boris250063 26.79
270 Magerramov, Elmar S250055 30.81
271 Zhuravliov, Valerij250065 50.14
272 Stohl, Igor249952 24.34
273 Murshed, Niaz249856 22.72
274 Marin, Mihail249854 23.78
275 Mochalov, Evgeny V249772 37.26
276 Womacka, Mathias249766 22.60
277 Plaskett, Jim249752 28.87
278 Nijboer, Friso249759 23.68
279 Gruenberg, Hans Ulrich249755 33.06
280 Gofshtein, Leonid D249669 35.78
281 Palatnik, Semen A249654 38.85
282 Stoica, Valentin249565 38.95
283 Sznapik, Aleksander249552 37.97
284 Lukov, Valentin249455 33.14
285 Motwani, Paul249456 26.63
286 Vogt, Lothar H249450 37.04
287 Klaric, Zlatko249458 32.27
288 Espig, Lutz249455 40.07
289 Damljanovic, Branko249451 27.62
290 Meister, Peter249459 22.60
291 Polgar, Zsuzsa249350 19.78
292 Ye Rongguang249364 25.33
293 Drasko, Milan249350 26.15
294 Meyer, E.249374
295 Hickl, Joerg249250 23.79
296 Hazai, Laszlo249251 35.63
297 Ornstein, Axel249257 36.77
298 Kalinitschew, Sergey249262 32.99
299 Vera, Reynaldo249155 28.06
300 Barlov, Dragan249151 32.00
301 Gufeld, Eduard E249156 52.87
302 Rajkovic, Dusan249054 46.62
303 Rodriguez Vargas, Orestes249055 45.57
304 Yrjola, Jouni249052 29.27
305 Lau, Ralf249049 29.28
306 Reefschlaeger, Helmut249060 44.81
307 Shamkovich, Leonid A248962 65.66
308 Piket, Jeroen248950 20.01
309 Davies, Nigel R248850 28.50
310 Tseitlin, Mikhail S248858 41.62
311 Machulsky, Anatoly D248865 32.35
312 Lombardy, William J248867 51.16
313 Sideif Sade, Fikret I248761 37.08
314 Thorhallsson, Throstur248659 19.87
315 Lein, Anatoly248655 57.84
316 Barbulescu, Dan248659 24.61
317 Granda Zuńiga, Julio E248550 21.93
318 Velikov, Petar248553 37.84
319 Ghinda, Mihail Viorel248456 39.52
320 Alburt, Lev O248452 43.44
321 Tringov, Georgy P248458 51.90
322 Malevinsky, Alexander A248468 38.92
323 Loginov, Valery A248458 33.13
324 Rivas Pastor, Manuel248357 28.55
325 Rogulj, Branko248363 37.50
326 Matulovic, Milan248357 53.64
327 Wahls, Matthias248352 21.01
328 McKay, Roderick M248368 36.96
329 Hebden, Mark248251 30.95
330 Marangunic, Srdjan248262 45.25
331 Ionescu, Constantin248254 30.38
332 Ioseliani, Nana248255 26.96
333 Kotronias, Vasilios248151 24.43
334 Raicevic, Momcilo248167
335 Popchev, Milko248151 24.22
336 Khenkin, Igor248164 20.86
337 Mohr, Stefan248053 21.27
338 Skembris, Spyridon248055 30.94
339 Lukacs, Peter248049 38.56
340 Gomez Baillo, Jorge H247957 29.78
341 Djuric, Stefan247852 33.51
342 Ermenkov, Evgenij247852 39.34
343 Rubinetti, Jorge A247858 43.83
344 Ernst, Thomas247850 28.45
345 Zilberstein, Valery I247866 45.80
346 Fernandez Garcia, Jose Luis247759 34.74
347 Tisdall, Jonathan D247752 30.43
348 Lin Ta247763 25.99
349 Rukavina, Josip247760 46.17
350 Levitt, Jonathan247650 25.66
351 Kraidman, Yair247675 56.25
352 Řgaard, Leif247569 37.07
353 Akhmilovskaya, Elena247573
354 Belov, Igor247570
355 Mainka, Romuald247555 25.71
356 Ree, Hans247558 44.38
357 Gruenenwald, Joerg247561 23.66
358 Martinovic, Slobodan247457 43.52
359 Svensson, Bengt247476 28.56
360 Palac, Mladen247468 17.95
361 Sher, Miron N247366 36.59
362 Pekarek, Ales247352 27.12
363 Kosten, Anthony C247349 30.52
364 Negulescu, Adrian247258 27.64
365 Hecht, Hans-Joachim247261 50.01
366 Schmidt, Wlodzimierz247250 45.81
367 Wolff, Patrick G247253 20.95
368 Klundt, Klaus247259 47.10
369 Nun, Jiri247254 31.51
370 Georgiev, Krum247253 30.69
371 Kozlov, V.247259
372 Li Zunian247171 31.06
373 Meduna, Eduard247050 38.39
374 Nun, Josef247074 55.52
375 Valkesalmi, Kimmo247054 27.75
376 Piskov, Yury246960 27.30
377 Gurgenidze, Bukhuti I246962 55.22
378 Kouatly, Bachar246950 30.91
379 Kogan, Boris246863
380 Padevsky, Nikola B246868 55.67
381 Haba, Petr246853 24.07
382 Szabó, László246870 71.87
383 Kishnev, Sergey246864 32.25
384 Pytel, Krzysztof246872 43.71
385 Meister, Yakov246762 33.39
386 Verduga, Denis Homero246761
387 Zaitsev, Igor A246772 50.68
388 Lechtynsky, Jiri246753 41.18
389 Maksimovic, Branimir246756 33.46
390 Okhotnik, Vladimir246757 38.92
391 Ekstroem, Roland246656 32.69
392 Lagunow, Alexander246673 21.55
393 Vukic, Milan246564 45.45
394 Braga, Fernando246555 30.56
395 Saltaev, Mihail246564 26.20
396 Hoi, Carsten246550 32.04
397 Petkevich, Jusefs246464 48.12
398 Hansen, Lars Bo246452 20.35
399 Nikolic, Zivoslav246454 35.13
400 Staniszewski, Piotr246353 22.41
401 Zilberstein, David246368 47.22
402 Malisauskas, Vidmantas246359 25.49
403 Renman, Nils Gustaf246358
404 Arbakov, Valentin246365 37.01
405 Plachetka, Jan246250 43.95
406 Varavin, Viktor246265 21.69
407 Atalik, Suat246268 24.31
408 Sellos, Didier246271 31.94
409 Kallai, Gabor246261 29.94
410 Veinger, Itzhak246269 50.57
411 Stanojevic, Branko246172 46.08
412 Zysk, Robert246156 22.74
413 Szekely, Peter246156 33.97
414 Hertneck, Gerald246152 25.37
415 Mednis, Edmar J246155 51.86
416 Vallifuoco, Giacomo246168 31.74
417 Knezevic, Milorad246155 52.25
418 Sherzer, Alex246158 17.99
419 Kirov Ivanov, Nino246056 43.39
420 Shabalov, Alexander246053 21.38
421 Khasin, Alexander245959 37.76
422 Reyes, Juan245967 25.76
423 Klinger, Josef245950 21.65
424 Dizdarevic, Emir245952 30.83
425 Brestian, Egon245856 24.51
426 Tolnai, Tibor245751 24.36
427 Piasetski, Leon David245767
428 Filipovic, Branko245658 31.32
429 Hawelko, Marek245652 29.47
430 Semeniuk, Alexander A245665 36.39
431 Blatny, Pavel245652 20.61
432 Arkell, Keith C245654 28.06
433 Sigurjónsson, Gudmundur245566 41.35
434 Prandstetter, Eduard245552 40.13
435 Vokác, Marek245452 30.15
436 Djukic, Zeljko245468 29.63
437 Kolev, Atanas245462 21.54
438 Nemet, Ivan245358 45.80
439 Mascarinas, Rico245360 35.91
440 Dueball, Juergen245368 43.84
441 Radulov, Ivan245356 50.06
442 Ardiansyah, Haji245363 37.15
443 Gurevich, Dmitry245351 32.39
444 Popov, Luben245262 53.01
445 Tempone, Marcelo245260 26.40
446 Solozhenkin, Evgeniy245264 22.50
447 Fokin, Sergey245273 33.30
448 Karasev, Vladimir I245164 50.62
449 Rakic, Tomislav245165 54.22
450 Ambroz, Jan245170 34.62
451 Schneider, Lars Ake245156
452 Ronin, V.245176
453 Wirthensohn, Heinz245057 37.74
454 Orso, Miklos245074 32.65
455 Cramling, Pia245054 25.77
456 Rachels, Stuart245062 19.35
457 Gleizerov, Evgeny245070 25.86
458 Komarov, Dimitri244961 20.16
459 Schmittdiel, Eckhard244952 28.72
460 Bergstrom, Christer244859 30.34
461 Howell, James C244858 21.70
462 Legky, Nikolay A244867 33.80
463 Spassov, Liuben244862 45.86
464 Zelcic, Robert244873 23.36
465 Bonin, Jay R244762 33.56
466 Conquest, Stuart244750 21.91
467 Petran, Pal244754 42.38
468 Wolf, Volker244762 31.40
469 Nei, Iivo244763 57.25
470 Levin, Felix244760 30.24
471 Lutz, Christopher244661 17.93
472 Karolyi, Tibor Jr244650 27.21
473 Winants, Luc244652 26.08
474 Strikovic, Aleksa244654 27.72
475 Thorsteins, Karl244653 24.30
476 Brunner, Lucas244653 21.67
477 Birnboim, Nathan244557 38.18
478 Frolov, Artur244468 18.50
479 Ciric, Dragoljub M244473 53.22
480 Trapl, Jindrich244469 46.85
481 Rechlis, Gad244454 21.98
482 Pribyl, Josef244453 41.30
483 Magomedov, Magaram244476 22.70
484 Horvath, Tamas244356 37.27
485 Cramling, Dan244365 29.98
486 Kovacevic, Predrag244371 28.40
487 Keitlinghaus, Ludger244354 23.52
488 Lalev, Dimitar244361 29.04
489 Ostojic, Predrag244263 50.94
490 Graf, Juergen244260 25.84
491 Bayer, Ernst Wolfgang244261
492 Lanc, Alois244252 40.95
493 Kuijf, Marinus244253 28.96
494 Garcia, Gildardo244158 34.89
495 Cvetkovic, Srdjan244155 42.92
496 Anic, Darko244165 31.75
497 Brooks, Michael A244165 27.79
498 Filipenko, Alexander V244176 39.91
499 Ochoa de Echaguen, F Javier244061 34.41
500 Brynell, Stellan244057 26.34

These ratings, calculated as of January 31, 1989, incorporate all games (against rated opponents) played in the time between February 1, 1988 and January 31, 1989, along with the ratings that were already calculated as of January 31, 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 January 31, 1989. This represents the player's estimated strength on February 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 February 1, 1989. The +/- value represents the standard deviation of that estimate; the player's true strength on February 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 February 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 January 31, 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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