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Top 10 active players as of February 28, 1989


Top 500 active players as of February 28, 1989

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28414868.8% #225.87
2 Karpov, Anatoly E28034726.9% #337.76
3 Ivanchuk, Vassily2703490.8% #2519.94
4 Beliavsky, Alexander G2697480.4% #2735.20
5 Short, Nigel D2696480.5% #2823.74
6 Salov, Valery B2694510.5% #3124.76
7 Timman, Jan H2681470.2% #3737.21
8 Speelman, Jonathan S2675480.1% #4332.40
9 Andersson, Ulf2674480.1% #4437.67
10 Gelfand, Boris2672520.2% #4720.68
11 Korchnoi, Viktor L2672470.1% #4457.93
12 Tukmakov, Vladimir B2667490.1% #4942.95
13 Portisch, Lajos2667480.1% #5051.90
14 Ehlvest, Jaan2666480.1% #5026.37
15 Tal, Mikhail2666480.1% #5052.30
16 Hübner, Robert2666480.1% #5140.31
17 Yudasin, Leonid G2661510.1% #5629.55
18 Jussupow, Artur M2660480.1% #5629.04
19 Ljubojevic, Ljubomir265947 #5638.32
20 Lputian, Smbat G2658490.1% #5731.04
21 Nikolic, Predrag265248 #6328.46
22 Ribli, Zoltán265148 #6337.48
23 Chernin, Alexander M264949 #6528.97
24 Gurevich, Mikhail N264748 #6830.02
25 Polugaevsky, Lev A264750 #7054.27
26 Dreev, Alexey264351 #7320.11
27 Vaganian, Rafael A264349 #7137.37
28 Psakhis, Lev B264248 #7230.25
29 Dolmatov, Sergey V264249 #7430.02
30 Nunn, John D M264048 #7433.84
31 Agdestein, Simen263851 #7821.79
32 Eingorn, Viacheslav S263649 #7932.26
33 Khalifman, Alexander263649 #7923.11
34 Gulko, Boris F263548 #8042.05
35 Dvoiris, Semen I263355 #8730.32
36 Spassky, Boris V263249 #8352.08
37 Dokhoian, Yury263250 #8424.34
38 Dautov, Rustem263253 #8723.25
39 Gavrikov, Victor N263149 #8431.58
40 Azmaiparashvili, Zurab A262853 #9128.94
41 Seirawan, Yasser262749 #8928.92
42 Hjartarson, Jóhann262648 #8926.05
43 Vladimirov, Evgeny Y262654 #9432.11
44 Malaniuk, Vladimir P262649 #9031.60
45 Torre, Eugenio262650 #9137.32
46 Sveshnikov, Evgeny E262553 #9439.05
47 Sokolov, Andrey Y262548 #9125.93
48 Sax, Gyula262449 #9237.69
49 Yurtaev, Leonid262153 #9829.82
50 Georgiev, Kiril262049 #9623.25
51 Romanishin, Oleg M262048 #9637.13
52 Balashov, Yury S261949 #9739.95
53 Smirin, Ilia261852 #10121.10
54 Vyzmanavin, Alexey261653 #10429.16
55 Hort, Vlastimil261549 #10245.13
56 Dorfman, Iosif D261451 #10636.82
57 Smyslov, Vassily V261351 #10667.92
58 Kovalev, Andrei261158 #11327.31
59 Smagin, Sergey260950 #11030.47
60 Christiansen, Larry M260749 #11132.67
61 Anand, Viswanathan260750 #11219.21
62 Bareev, Evgeny260451 #11622.27
63 Razuvaev, Yury S260351 #11743.38
64 Pigusov, Evgeny260251 #11927.91
65 Ubilava, Elizbar E260155 #12338.50
66 Ivanov, Alexander V259958 #12832.82
67 Aseev, Konstantin N259853 #12428.36
68 Lerner, Konstantin Z259750 #12438.99
69 Nogueiras, Jesus259648 #12329.61
70 Kharitonov, Andrey Y259650 #12429.90
71 Kruppa, Yuri259458 #13224.69
72 Kveinys, Aloyzas259361 #13626.64
73 Kuzmin, Gennady P259356 #13343.11
74 Panchenko, Alexander N259056 #13535.40
75 Rozentalis, Eduardas258951 #13325.75
76 Chandler, Murray G258948 #13128.90
77 Kupreichik, Viktor D258751 #13439.65
78 Kamsky, Gata258757 #13814.74
79 Goldin, Alexander258752 #13524.00
80 Naumkin, Igor258755 #13723.55
81 Yermolinsky, Alex V258752 #13630.88
82 Vaisser, Anatoli258752 #13539.97
83 Huzman, Alexander258553 #13826.88
84 Larsen, Bent258449 #13653.98
85 van der Wiel, John T H258448 #13629.55
86 Podgaets, Mikhail Y258372 #15241.60
87 Timoshchenko, Gennady258151 #14139.84
88 Giorgadze, Giorgi258155 #14424.38
89 Tseshkovsky, Vitaly V258051 #14244.43
90 Oll, Lembit257951 #14422.85
91 Krasenkow, Michal257758 #14925.29
92 Murey, Yakov257752 #14647.57
93 Kholmov, Ratmir D257652 #14763.79
94 Dlugy, Maxim257650 #14523.08
95 Sosonko, Gennadi257551 #14745.78
96 Rashkovsky, Nukhim N257551 #14642.86
97 deFirmian, Nicholas E257551 #14731.59
98 Dzindzichashvili, Roman Y257454 #15044.81
99 Shabanov, Yury F257368 #16051.30
100 Neverov, Valery257354 #15124.69
101 Pintér, József257350 35.30
102 Adorján, András257350 38.91
103 Makarichev, Sergey Y257257 35.28
104 Miles, Anthony J257049 33.85
105 Ftácnik, Lubomír257049 31.33
106 Sorokin, Maxim257061 21.10
107 Gorelov, Sergey G256964 31.53
108 Geller, Efim P256851 63.98
109 Shirov, Alexei256857 16.65
110 Spraggett, Kevin B256753 34.30
111 Glek, Igor V256755 27.31
112 Arkhipov, Sergey256658 34.68
113 Ulibin, Mikhail256553 17.74
114 Lobron, Eric256449 28.81
115 Hulak, Krunoslav256451 37.76
116 Orlov, Georgi256462
117 Kavalek, Lubomir256458 45.55
118 Chekhov, Valery A256450 33.25
119 Pétursson, Margeir256349 29.04
120 Vasiukov, Evgeny A256354 55.97
121 Epishin, Vladimir256355 23.63
122 Mikhalchishin, Adrian B256251 34.28
123 Darga, Klaus V256268 55.01
124 Benjamin, Joel L256149 24.96
125 Browne, Walter S256152 40.13
126 Karlsson, Lars256151 33.63
127 Zaichik, Gennady L256051 32.05
128 Didishko, Vereslav256074 39.88
129 Bikhovsky, Avigdor I255969 33.97
130 Fedorowicz, John P255849 30.42
131 Hansen, Curt255749 24.44
132 Tseitlin, Mark D255774 45.43
133 Janjgava, Lasha255752 18.81
134 Csom, István255652 48.74
135 Shneider, Aleksandr255659 26.77
136 Kochiev, Alexander255555 32.92
137 Smejkal, Jan255551 42.93
138 Mestel, A Jonathan255455 31.95
139 Kudrin, Sergey255451 29.47
140 Hellers, Ferdinand255351 20.08
141 Ionov, Sergey255360 27.14
142 Barua, Dibyendu255354 22.34
143 Kindermann, Stefan255348 29.17
144 Olafsson, Helgi255349 32.54
145 Taimanov, Mark E255268 63.06
146 Kuzmin, Alexey255157 25.97
147 Marin, Mihail254955 23.85
148 Rogers, Ian254949 28.68
149 Bagirov, Vladimir K254955 52.53
150 Ivanovic, Božidar254851 42.51
151 Soppe, Guillermo254763 28.45
152 Arnason, Jon L254650 28.29
153 Moskalenko, Viktor254655 28.23
154 Lanka, Zigurds254562 28.77
155 Yakovich, Yuri254456 26.25
156 Bönsch, Uwe254449 30.37
157 Kurajica, Bojan254462 41.29
158 Novikov, Igor A254451 26.76
159 Zilberman, Nathan R254472 48.82
160 Franco Ocampos, Zenon254359 32.79
161 Najdorf, Miguel254359 78.87
162 Sokolov, Ivan254350 20.71
163 Lalic, Bogdan254251 24.97
164 Savchenko, Stanislav254255 22.10
165 Todorcevic, Miodrag254251 48.30
166 Greenfeld, Alon254252 24.86
167 Liberzon, Vladimir M254164 51.93
168 Duer, Arne254166 29.63
169 Gheorghiu, Florin254152 44.89
170 Cebalo, Mišo254050 44.06
171 Kengis, Edvins254056 29.88
172 Adams, Michael253952 17.28
173 Cvitan, Ognjen253950 27.38
174 Morovic Fernández, Iván E253953 25.92
175 Knaak, Rainer F253949 35.94
176 Antunes, Antonio253857 27.06
177 Mokrý, Karel253851 30.06
178 Pfleger, Helmut253758 45.56
179 Kaidanov, Gregory S253751 29.38
180 Timoshenko, Georgy253661 22.74
181 Veingold, Aleksander253670 35.38
182 Gruenfeld, Yehuda253654 32.99
183 Chiburdanidze, Maia G253652 28.11
184 Bjelajac, Milan253569 40.95
185 Karpman, Vadim253360 23.79
186 Zagrebelny, Sergey253360
187 Quinteros, Miguel A253360 41.17
188 Uhlmann, Wolfgang253251 53.91
189 Cámpora, Daniel H253250 31.66
190 Popovic, Petar253249 30.04
191 Kiselev, Sergey253257 27.46
192 Schussler, Harry253153 31.68
193 Groszpeter, Attila253150 28.72
194 Gaprindashvili, Nona253060 47.82
195 Flear, Glenn C253050 30.04
196 Rohde, Michael A252952 29.51
197 Reshevsky, Samuel H252966 77.26
198 Adianto, Utut252860 23.94
199 Hodgson, Julian M252848 25.59
200 Byrne, Robert E252760 60.86
201 Sahovic, Dragutin252763 48.55
202 Gruenberg, Hans Ulrich252754 33.14
203 Yuferov, Sergey N252769 43.23
204 Ninov, Kiril252653 20.39
205 Suba, Mihai252651 41.74
206 Ruban, Vadim252654 24.71
207 Milos, Gilberto252652 25.33
208 Wedberg, Tom252550 35.26
209 Bischoff, Klaus252550 27.72
210 Panno, Oscar R252553 53.94
211 Rodriguez, Amador252449 32.47
212 Petrosian, Arshak B252452 35.20
213 Velimirovic, Dragoljub252451 46.79
214 Barbero, Gerardo F252252 27.52
215 Donchev, Dimitar I252255 30.60
216 Watson, William N252248 26.86
217 Anastasian, Ashot252256 24.62
218 Gipslis, Aivars252157 52.05
219 Mirkovic, Slobodan252069 30.58
220 Faragó, Iván252049 42.91
221 Graf, Alexander251956 26.51
222 Vitolinš, Alvis251967 42.70
223 London, Dimitri251874 26.27
224 Sunye Neto, Jaime251858 31.82
225 Lukin, Andrei M251858 40.50
226 Bronstein, David I251858 65.03
227 Xu Jun251854 26.45
228 Moroz, Alexander251862 28.11
229 Akopian, Vladimir251753 17.22
230 Baburin, Alexander251762 22.03
231 Dizdar, Goran251751 30.23
232 Basin, Leonid251656 31.26
233 Sherbakov, Vitaly S251669 33.69
234 Gligoric, Svetozar251655 66.07
235 Marjanovic, Slavoljub251650 34.14
236 Serper, Grigory251653 19.46
237 Govedarica, Radovan251667 41.04
238 Inkiov, Ventzislav251551 32.78
239 Zapata, Alonso251451 30.52
240 Damljanovic, Branko251350 27.70
241 Simic, Radoslav251357 40.72
242 García Gonzáles, Guillermo251251 35.22
243 Seret, Jean Luc251163
244 Nikolac, Juraj251159 56.85
245 Petrienko, Vladimir251168 33.96
246 Ivanov, Igor V250955 42.14
247 Kantsler, Boris250964 26.87
248 King, Daniel J250950 25.50
249 Kovacevic, Vladimir250851 46.92
250 Tischbierek, Raj250852 26.43
251 Frias, Victor J250856 33.05
252 Georgadze, Tamaz V250765 41.30
253 Barlov, Dragan250650 32.08
254 Garcia Palermo, Carlos250651 35.24
255 Van der Sterren, Paul250649 32.94
256 Savon, Vladimir A250659 48.42
257 Espig, Lutz250554 40.15
258 Mohr, Stefan250552 21.35
259 Horvath, Jozsef250450 24.54
260 Wilder, Michael250451 26.45
261 Renet, Olivier250450 24.19
262 Efimov, Igor250362 28.45
263 Magerramov, Elmar S250355 30.88
264 Illescas Cordoba, Miguel250353 23.23
265 Ostermeyer, Peter250361 45.38
266 Zhuravliov, Valerij250265 50.21
267 Palatnik, Semen A250254 38.92
268 Ivkov, Borislav250255 55.29
269 Ye Jiangchuan250160 28.27
270 Polgar, Zsuzsa250151 19.86
271 Stohl, Igor250152 24.42
272 Foisor, Ovidiu250053 29.89
273 Stoica, Valentin250065 39.04
274 Kosic, Dragan250060 19.04
275 Unzicker, Wolfgang249958 63.67
276 Mortensen, Erling249953 33.90
277 Motwani, Paul249856 26.71
278 Meyer, E.249774
279 Plaskett, Jim249652 28.94
280 Guseinov, Aidyn249657 37.16
281 Gutman, Lev249551 43.42
282 Nijboer, Friso249559 23.76
283 Andrianov, Nikolai249467 27.19
284 Thorhallsson, Throstur249458 19.94
285 Skembris, Spyridon249455 31.02
286 Ye Rongguang249364 25.40
287 Gofshtein, Leonid D249370 35.85
288 Vogt, Lothar H249350 37.11
289 Abramovic, Boško249350 38.04
290 Wojtkiewicz, Aleksander249355 26.12
291 Hickl, Joerg249150 23.87
292 Mochalov, Evgeny V249172 37.33
293 Hazai, Laszlo249152 35.71
294 Rodriguez Vargas, Orestes249156 45.65
295 Piket, Jeroen249151 20.09
296 Shamkovich, Leonid A249062 65.74
297 Gufeld, Eduard E249056 52.94
298 Lukov, Valentin249055 33.21
299 Loginov, Valery A249058 33.21
300 Kosten, Anthony C249049 30.59
301 Yrjola, Jouni249052 29.34
302 Vera, Reynaldo248955 28.14
303 Ornstein, Axel248957 36.84
304 Jansa, Vlastimil248950 46.25
305 Womacka, Mathias248966 22.67
306 Kishnev, Sergey248964 32.32
307 McKay, Roderick M248868 37.05
308 Meister, Peter248859 22.68
309 Klaric, Zlatko248757 32.34
310 Rajkovic, Dusan248755 46.70
311 Kotronias, Vasilios248652 24.51
312 Sideif Sade, Fikret I248661 37.16
313 Velikov, Petar248653 37.91
314 Barbulescu, Dan248659 24.68
315 Lau, Ralf248549 29.36
316 Ghinda, Mihail Viorel248557 39.59
317 Lukacs, Peter248549 38.64
318 Davies, Nigel R248550 28.58
319 Drasko, Milan248550 26.23
320 Khenkin, Igor248464 20.93
321 Lein, Anatoly248455 57.91
322 Alburt, Lev O248452 43.52
323 Palac, Mladen248464 18.03
324 Murshed, Niaz248356 22.79
325 Tseitlin, Mikhail S248358 41.70
326 Tringov, Georgy P248358 51.97
327 Lombardy, William J248367 51.23
328 Gomez Baillo, Jorge H248357 29.86
329 Ionescu, Constantin248254 30.46
330 Hebden, Mark248151 31.04
331 Rubinetti, Jorge A248158 43.91
332 Granda Zuńiga, Julio E248150 22.01
333 Wahls, Matthias248152 21.09
334 Cifuentes Parada, Roberto248053 31.19
335 Rogulj, Branko248064 37.57
336 Mainka, Romuald248055 25.79
337 Matulovic, Milan248059 53.72
338 Tisdall, Jonathan D248051 30.51
339 Raicevic, Momcilo247965
340 Popchev, Milko247951 24.30
341 Rivas Pastor, Manuel247957 28.62
342 Kalinitschew, Sergey247863 33.07
343 Sznapik, Aleksander247852 38.05
344 Řgaard, Leif247769 37.15
345 Pekarek, Ales247753 27.20
346 Haba, Petr247653 24.14
347 Ioseliani, Nana247655 27.04
348 Kraidman, Yair247575 56.32
349 Sher, Miron N247566 36.66
350 Reefschlaeger, Helmut247459 44.89
351 Lin Ta247463 26.08
352 Veinger, Itzhak247469 50.65
353 Georgiev, Krum247454 30.76
354 Levitt, Jonathan247450 25.73
355 Nun, Jiri247354 31.59
356 Piskov, Yury247360 27.38
357 Kouatly, Bachar247250 30.98
358 Martinovic, Slobodan247257 43.59
359 Saltaev, Mihail247264 26.28
360 Pytel, Krzysztof247174 43.79
361 Zilberstein, Valery I247166 45.87
362 Kozlov, V.247159
363 Ernst, Thomas247150 28.53
364 Li Zunian247171 31.14
365 Padevsky, Nikola B247168 55.75
366 Kogan, Boris247163
367 Meduna, Eduard247150 38.46
368 Varavin, Viktor247065 21.76
369 Klundt, Klaus247059 47.18
370 Valkesalmi, Kimmo247054 27.82
371 Wolff, Patrick G247053 21.04
372 Fernandez Garcia, Jose Luis247060 34.82
373 Rukavina, Josip247061 46.25
374 Atalik, Suat247067 24.38
375 Akhmilovskaya, Elena246974
376 Ermenkov, Evgenij246953 39.41
377 Braga, Fernando246956 30.64
378 Svensson, Bengt246876 28.64
379 Belov, Igor246771
380 Verduga, Denis Homero246761
381 Klinger, Josef246750 21.73
382 Lechtynsky, Jiri246753 41.26
383 Kallai, Gabor246661 30.02
384 Gurgenidze, Bukhuti I246662 55.29
385 Marangunic, Srdjan246661 45.33
386 Zaitsev, Igor A246673 50.75
387 Hecht, Hans-Joachim246561 50.08
388 Petkevich, Jusefs246564 48.19
389 Staniszewski, Piotr246554 22.48
390 Djuric, Stefan246451 33.59
391 Vukic, Milan246463 45.53
392 Hoi, Carsten246451 32.12
393 Arbakov, Valentin246465 37.08
394 Shabalov, Alexander246353 21.46
395 Reeh, Oliver246355 25.11
396 Khasin, Alexander246359 37.83
397 Knezevic, Milorad246255 52.33
398 Ambroz, Jan246270 34.69
399 Plachetka, Jan246250 44.03
400 Stanojevic, Branko246272 46.15
401 Lutz, Christopher246260 18.01
402 Schmidt, Wlodzimierz246250 45.88
403 Kirov Ivanov, Nino246256 43.47
404 Filipenko, Alexander V246176 39.98
405 Hansen, Lars Bo246152 20.43
406 Reyes, Juan246167 25.84
407 Ekstroem, Roland246057 32.77
408 Szabó, László246073 71.94
409 Bonin, Jay R246062 33.64
410 Brestian, Egon246056 24.58
411 Szekely, Peter246056 34.05
412 Vallifuoco, Giacomo245968 31.82
413 Sellos, Didier245971 32.02
414 Blatny, Pavel245952 20.68
415 Lagunow, Alexander245973 21.62
416 Kožul, Zdenko245952 22.77
417 Negulescu, Adrian245859 27.72
418 Ree, Hans245858 44.45
419 Zysk, Robert245856 22.82
420 Sigurjónsson, Gudmundur245768 41.43
421 Malisauskas, Vidmantas245759 25.57
422 Jukic, Mirko245659 26.36
423 Karolyi, Tibor Jr245651 27.29
424 Cabrilo, Goran245652 30.66
425 Semeniuk, Alexander A245665 36.47
426 Renman, Nils Gustaf245558
427 Wirthensohn, Heinz245558 37.82
428 Prandstetter, Eduard245553 40.20
429 Tempone, Marcelo245560 26.48
430 Tolnai, Tibor245551 24.43
431 Piasetski, Leon David245567
432 Hertneck, Gerald245552 25.44
433 Dizdarevic, Emir245553 30.90
434 Graf, Juergen245459 25.91
435 Solozhenkin, Evgeniy245464 22.58
436 Gurevich, Dmitry245451 32.46
437 Machulsky, Anatoly D245365 32.43
438 Dueball, Juergen245368 43.91
439 Vokác, Marek245352 30.23
440 Brunner, Lucas245252 21.75
441 Mascarinas, Rico245261 35.98
442 Ardiansyah, Haji245263 37.23
443 Nikolic, Zivoslav245153 35.21
444 Trapl, Jindrich245169 46.92
445 Kolev, Atanas245162 21.62
446 Arkell, Keith C245154 28.14
447 Popov, Luben245162 53.08
448 Levin, Felix245160 30.31
449 Mednis, Edmar J245155 51.93
450 Rachels, Stuart245062 19.42
451 Sherzer, Alex245058 18.07
452 Thorsteins, Karl245053 24.37
453 Komarov, Dimitri245061 20.24
454 Pribyl, Josef245053 41.38
455 Ochoa de Echaguen, F Javier245062 34.48
456 Djukic, Zeljko244968 29.71
457 Semkov, Semko244953 28.99
458 Norwood, David244955 20.40
459 Legky, Nikolay A244967 33.88
460 Cramling, Pia244854 25.85
461 Lalev, Dimitar244870 29.12
462 Nei, Iivo244863 57.33
463 Strikovic, Aleksa244753 27.79
464 Zelcic, Robert244773 23.44
465 Spassov, Liuben244761 45.93
466 Radulov, Ivan244757 50.14
467 Luther, Thomas244755 19.32
468 Rakic, Tomislav244665 54.30
469 Gruenenwald, Joerg244661 23.73
470 Magomedov, Magaram244676 22.77
471 Nemet, Ivan244658 45.87
472 Petran, Pal244654 42.45
473 Brooks, Michael A244665 27.86
474 Birnboim, Nathan244657 38.25
475 Yap, Andronico244569
476 Filipovic, Branko244558 31.39
477 Ronin, V.244576
478 Garcia, Gildardo244558 34.96
479 Meister, Yakov244562 33.46
480 Orso, Miklos244574 32.72
481 Ilincic, Zlatko244556 20.80
482 Kuczynski, Robert244451 22.86
483 Wolf, Volker244462 31.48
484 Schneider, Lars Ake244456
485 Ciric, Dragoljub M244373 53.29
486 Kuijf, Marinus244353 29.04
487 Bergstrom, Christer244359 30.42
488 Neckar, Lubomir244371 38.57
489 Horvath, Tamas244256 37.35
490 Malevinsky, Alexander A244268 39.01
491 Kovacevic, Predrag244271 28.48
492 Okhotnik, Vladimir244256 38.99
493 Keitlinghaus, Ludger244154 23.59
494 Tatai, Stefano244155 50.93
495 Karasev, Vladimir I244164 50.70
496 Lanc, Alois244052 41.03
497 Casper, Thomas244057 29.94
498 Schmittdiel, Eckhard244052 28.79
499 Cvetkovic, Srdjan244055 42.99
500 Conquest, Stuart244050 21.98

These ratings, calculated as of February 28, 1989, incorporate all games (against rated opponents) played in the time between March 1, 1988 and February 28, 1989, along with the ratings that were already calculated as of February 29, 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 February 28, 1989. This represents the player's estimated strength on March 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 March 1, 1989. The +/- value represents the standard deviation of that estimate; the player's true strength on March 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 March 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 February 28, 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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