< November 30, 1989     Back to date list    January 31, 1990 >

Top 10 active players as of December 31, 1989


Top 500 active players as of December 31, 1989

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28464872.7% #226.72
2 Karpov, Anatoly E27954720.0% #338.61
3 Timman, Jan H2733482.5% #1338.05
4 Ivanchuk, Vassily2717491.2% #1920.79
5 Salov, Valery B2704490.7% #2625.60
6 Short, Nigel D2697470.4% #2924.58
7 Gelfand, Boris2689490.3% #3421.52
8 Korchnoi, Viktor L2689470.3% #3358.77
9 Gurevich, Mikhail N2685480.3% #3730.86
10 Beliavsky, Alexander G2680480.1% #4136.04
11 Ehlvest, Jaan2678480.1% #4227.21
12 Andersson, Ulf2675480.1% #4438.51
13 Dolmatov, Sergey V2672490.1% #4730.86
14 Dautov, Rustem2669500.1% #5024.09
15 Ljubojevic, Ljubomir2668480.1% #5039.16
16 Hübner, Robert2666480.1% #5141.15
17 Yudasin, Leonid G2656500.1% #6230.40
18 Speelman, Jonathan S265648 #6133.25
19 Lputian, Smbat G2654490.1% #6331.88
20 Ribli, Zoltán265248 #6438.32
21 Jussupow, Artur M265148 #6529.88
22 Portisch, Lajos265148 #6552.74
23 Polugaevsky, Lev A264950 #6855.11
24 Dreev, Alexey264849 #6820.94
25 Tukmakov, Vladimir B264749 #7043.79
26 Nunn, John D M264748 #6934.68
27 Vaganian, Rafael A264648 #6938.21
28 Dvoiris, Semen I264652 #7331.16
29 Tal, Mikhail264648 #7053.14
30 Vyzmanavin, Alexey264251 #7729.99
31 Yurtaev, Leonid264053 #7930.66
32 Chernin, Alexander M264048 #7629.82
33 Khalifman, Alexander263949 #7823.95
34 Christiansen, Larry M263850 #8033.51
35 Bareev, Evgeny263750 #8123.11
36 Nikolic, Predrag263548 #8229.30
37 Vladimirov, Evgeny Y263552 #8532.94
38 Gulko, Boris F263449 #8342.89
39 Azmaiparashvili, Zurab A263350 #8529.79
40 Aseev, Konstantin N263252 #8729.20
41 Seirawan, Yasser263048 #8729.77
42 Gavrikov, Victor N263049 #8832.42
43 Sax, Gyula262948 #8838.54
44 Agdestein, Simen262950 #9022.63
45 Timoshchenko, Gennady262550 #9540.68
46 Sveshnikov, Evgeny E262452 #9739.89
47 Georgiev, Kiril262349 #9524.09
48 Sokolov, Andrey Y262249 #9726.78
49 Eingorn, Viacheslav S262149 #9833.10
50 Anand, Viswanathan262051 #10220.05
51 Razuvaev, Yury S261850 #10344.22
52 Balashov, Yury S261449 #10640.80
53 Epishin, Vladimir261051 #11224.47
54 Rozentalis, Eduardas260950 #11326.59
55 Dzindzichashvili, Roman Y260952 #11445.65
56 Miles, Anthony J260748 #11334.69
57 Smirin, Ilia260750 #11521.94
58 Psakhis, Lev B260748 #11431.09
59 Spassky, Boris V260649 #11552.91
60 Goldin, Alexander260550 #11724.84
61 Krasenkow, Michal260451 #11926.13
62 Kamsky, Gata260452 #12115.58
63 Oll, Lembit260349 #11923.69
64 Neverov, Valery260251 #12125.53
65 Dorfman, Iosif D260251 #12137.66
66 deFirmian, Nicholas E260149 #12232.43
67 Kveinys, Aloyzas260060 #12927.48
68 Lerner, Konstantin Z260050 #12339.84
69 Dokhoian, Yury260051 #12325.18
70 Pigusov, Evgeny259951 #12528.75
71 Malaniuk, Vladimir P259748 #12632.44
72 Rashkovsky, Nukhim N259651 #12843.70
73 Romanishin, Oleg M259548 #12737.97
74 Novikov, Igor A259550 #12927.61
75 Smyslov, Vassily V259550 #12868.77
76 Torre, Eugenio259451 #13138.16
77 Makarichev, Sergey Y259354 #13436.12
78 Hansen, Curt259349 #13125.29
79 Ftácnik, Lubomír259349 #13032.17
80 Ivanov, Alexander V259252 #13333.66
81 Hort, Vlastimil259249 #13145.96
82 Kharitonov, Andrey Y259250 #13230.74
83 Kruppa, Yuri259056 #13825.53
84 Yermolinsky, Alex V258955 #13831.72
85 Fedorowicz, John P258849 #13631.26
86 Pétursson, Margeir258748 #13629.88
87 Smagin, Sergey258649 #13831.31
88 Kovalev, Andrei258559 #14628.15
89 Shirov, Alexei258552 #14117.49
90 Kuzmin, Gennady P258354 #14543.94
91 van der Wiel, John T H258148 #14230.39
92 Vasiukov, Evgeny A258052 #14556.82
93 Panchenko, Alexander N258054 #14736.24
94 Chandler, Murray G257949 #14629.74
95 Akopian, Vladimir257851 #14818.07
96 Benjamin, Joel L257749 #14725.80
97 Hjartarson, Jóhann257748 #14626.90
98 Ionov, Sergey257664 #15827.98
99 Ubilava, Elizbar E257652 #15039.34
100 Olafsson, Helgi257649 #14833.38
101 Tseshkovsky, Vitaly V257650 45.27
102 Petrienko, Vladimir257564 34.81
103 Hulak, Krunoslav257450 38.60
104 Karlsson, Lars257452 34.47
105 Vaisser, Anatoli257450 40.82
106 Nogueiras, Jesus257248 30.45
107 Kalinitschew, Sergey257162 33.91
108 Kudrin, Sergey257150 30.32
109 Todorcevic, Miodrag257150 49.14
110 Ulibin, Mikhail257151 18.58
111 Sokolov, Ivan257149 21.55
112 Taimanov, Mark E257056 63.90
113 Pintér, József257051 36.14
114 Spraggett, Kevin B256950 35.14
115 Lobron, Eric256949 29.65
116 Larsen, Bent256849 54.82
117 Sosonko, Gennadi256853 46.62
118 Knaak, Rainer F256750 36.79
119 Adams, Michael256749 18.12
120 Smejkal, Jan256650 43.77
121 Gorelov, Sergey G256460 32.37
122 Kuzmin, Alexey256453 26.81
123 Arkhipov, Sergey256459 35.52
124 Sorokin, Maxim256455 21.94
125 Kengis, Edvins256454 30.72
126 Timoshenko, Georgy256353 23.58
127 Duer, Arne256266 30.47
128 Sturua, Zurab256167 30.56
129 Cvitan, Ognjen256050 28.22
130 Shabanov, Yury F256068 52.14
131 Shneider, Aleksandr256056 27.61
132 Kavalek, Lubomir255962 46.39
133 Khenkin, Igor255955 21.78
134 Kochiev, Alexander255852 33.77
135 Suba, Mihai255750 42.58
136 Glek, Igor V255752 28.15
137 Komarov, Dimitri255658 21.08
138 Sher, Miron N255659 37.51
139 Giorgadze, Giorgi255552 25.22
140 Huzman, Alexander255552 27.72
141 Orlov, Georgi255562
142 Dlugy, Maxim255549 23.92
143 Kurajica, Bojan255469 42.13
144 Bönsch, Uwe255450 31.21
145 Mikhalchishin, Adrian B255350 35.12
146 Quinteros, Miguel A255364 42.01
147 Yakovich, Yuri255355 27.09
148 Morovic Fernández, Iván E255254 26.77
149 Kholmov, Ratmir D255251 64.63
150 Tiviakov, Sergei255261 16.88
151 Kindermann, Stefan255248 30.01
152 Lalic, Bogdan255150 25.81
153 Janjgava, Lasha255053 19.65
154 Bikhovsky, Avigdor I255071 34.82
155 Browne, Walter S254951 40.97
156 Chekhov, Valery A254950 34.09
157 Greenfeld, Alon254952 25.70
158 Hodgson, Julian M254948 26.43
159 Baburin, Alexander254759 22.87
160 Najdorf, Miguel254663 79.71
161 Wahls, Matthias254649 21.92
162 Soppe, Guillermo254662 29.29
163 Popovic, Petar254649 30.88
164 Kramnik, Vladimir254561 14.52
165 Kupreichik, Viktor D254550 40.49
166 Naumkin, Igor254455 24.39
167 Adianto, Utut254367 24.79
168 King, Daniel J254349 26.34
169 Govedarica, Radovan254270 41.88
170 Minasian, Artashes254258 22.94
171 Kaidanov, Gregory S254251 30.22
172 Magomedov, Magaram254259 23.61
173 Milos, Gilberto254252 26.17
174 Karpman, Vadim254255 24.63
175 Mnatsakanian, Eduard A254171 51.07
176 Rachels, Stuart254158 20.26
177 Magerramov, Elmar S254154 31.72
178 Moskalenko, Viktor254152 29.07
179 Adorján, András254150 39.75
180 Kozlov, V.254161
181 Geller, Efim P254150 64.83
182 Groszpeter, Attila254150 29.56
183 Murey, Yakov254151 48.41
184 Rodriguez, Amador254049 33.31
185 Ivanovic, Božidar253951 43.35
186 Uhlmann, Wolfgang253952 54.76
187 Velimirovic, Dragoljub253951 47.63
188 Lanka, Zigurds253957 29.61
189 Donchev, Dimitar I253956 31.44
190 Henley, Ron W253873 33.07
191 Rogers, Ian253850 29.52
192 Mokrý, Karel253850 30.90
193 Bass, Leonid253762 32.59
194 Barua, Dibyendu253555 23.18
195 Damljanovic, Branko253449 28.54
196 Anastasian, Ashot253352 25.46
197 Arnason, Jon L253349 29.13
198 Mestel, A Jonathan253257 32.80
199 Barlov, Dragan253250 32.91
200 Cámpora, Daniel H253149 32.50
201 Darga, Klaus V253165 55.85
202 Bagirov, Vladimir K253052 53.37
203 Pfleger, Helmut253058 46.40
204 Veingold, Aleksander253067 36.22
205 Gheorghiu, Florin253051 45.73
206 Chiburdanidze, Maia G252952 28.95
207 Ruban, Vadim252952 25.55
208 Gipslis, Aivars252960 52.90
209 Savon, Vladimir A252753 49.26
210 Gofshtein, Leonid D252766 36.69
211 Panno, Oscar R252753 54.79
212 Gufeld, Eduard E252655 53.78
213 Van der Sterren, Paul252649 33.79
214 Csom, István252650 49.58
215 Marjanovic, Slavoljub252651 34.98
216 Polgar, Zsuzsa252650 20.70
217 Faragó, Iván252649 43.75
218 Horvath, Jozsef252650 25.38
219 Ye Jiangchuan252560 29.11
220 Yrjola, Jouni252552 30.19
221 Savchenko, Stanislav252554 22.94
222 Cebalo, Mišo252449 44.90
223 Zagrebelny, Sergey252462
224 Zapata, Alonso252451 31.36
225 Liberzon, Vladimir M252458 52.77
226 Illescas Cordoba, Miguel252451 24.08
227 Hebden, Mark252450 31.88
228 Gruenfeld, Yehuda252453 33.84
229 Machulsky, Anatoly D252457 33.27
230 Lukin, Andrei M252355 41.34
231 Bischoff, Klaus252249 28.56
232 Kuporosov, Viktor252171 28.26
233 Rohde, Michael A252152 30.35
234 Franco Ocampos, Zenon252154 33.63
235 Simic, Radoslav252057 41.56
236 Wilder, Michael252051 27.29
237 Ninov, Kiril251954 21.23
238 Bronstein, David I251958 65.87
239 Ye Rongguang251863 26.24
240 Mochalov, Evgeny V251871 38.17
241 Rausis, Igors251862 28.73
242 Gaprindashvili, Nona251860 48.66
243 Wojtkiewicz, Aleksander251752 26.95
244 Dizdar, Goran251752 31.07
245 London, Dimitri251665 27.11
246 Palatnik, Semen A251653 39.76
247 Frias, Victor J251557 33.89
248 Kovacevic, Vladimir251450 47.76
249 Renet, Olivier251449 25.03
250 Inkiov, Ventzislav251451 33.62
251 Tseitlin, Mark D251459 46.27
252 Zaichik, Gennady L251350 32.89
253 Kožul, Zdenko251250 23.61
254 Georgadze, Tamaz V251162 42.14
255 Barbero, Gerardo F251152 28.36
256 Lau, Ralf251149 30.20
257 Mortensen, Erling251052 34.74
258 Kishnev, Sergey251066 33.16
259 Hellers, Ferdinand251050 20.92
260 Gruenberg, Hans Ulrich251050 33.97
261 Gurevich, Vladimir251063 30.41
262 Filipenko, Alexander V250966 40.82
263 Vera, Reynaldo250953 28.98
264 Watson, William N250949 27.70
265 Gligoric, Svetozar250953 66.91
266 Tseitlin, Mikhail S250852 42.54
267 Kotronias, Vasilios250850 25.35
268 Piket, Jeroen250848 20.92
269 Graf, Alexander250858 27.35
270 Hertneck, Gerald250855 26.29
271 Hickl, Joerg250850 24.71
272 Espig, Lutz250755 40.98
273 Sahovic, Dragutin250761 49.40
274 Sellos, Didier250759 32.86
275 Wolff, Patrick G250751 21.88
276 Yuneev, Alexey250657
277 Reyes, Juan250662 26.68
278 Stoica, Valentin250668 39.88
279 Alburt, Lev O250552 44.36
280 Rodriguez Vargas, Orestes250458 46.49
281 Guseinov, Aidyn250462 37.99
282 Malisauskas, Vidmantas250355 26.41
283 García Gonzáles, Guillermo250352 36.06
284 Basin, Leonid250256 32.11
285 Gutman, Lev250251 44.26
286 Loginov, Valery A250261 34.05
287 Foisor, Ovidiu250257 30.73
288 Ree, Hans250156 45.29
289 Nikolac, Juraj250165 57.69
290 Makarov, Marat250058 26.65
291 Sadler, Matthew250058 15.63
292 Zilberman, Nathan R250064 49.66
293 Fokin, Sergey249964 34.21
294 Rivas Pastor, Manuel249953 29.47
295 Mirkovic, Slobodan249971 31.43
296 Hansen, Lars Bo249850 21.27
297 Meister, Yakov249864 34.30
298 Kiselev, Sergey249856 28.30
299 Andrianov, Nikolai249867 28.03
300 Lein, Anatoly249854 58.76
301 Tisdall, Jonathan D249750 31.35
302 Antunes, Antonio249758 27.90
303 Piskov, Yury249757 28.22
304 Belov, Igor249759
305 Seret, Jean Luc249661
306 Kantsler, Boris249657 27.71
307 Xu Jun249657 27.29
308 Gleizerov, Evgeny249561 26.78
309 Tolnai, Tibor249450 25.27
310 Stohl, Igor249451 25.26
311 Jansa, Vlastimil249451 47.09
312 Ivanov, Igor V249452 42.97
313 Lukacs, Peter249450 39.48
314 Zhuravliov, Valerij249467 51.05
315 Sherbakov, Ruslan249361 20.30
316 Pytel, Krzysztof249367 44.63
317 Klinger, Josef249350 22.57
318 Drasko, Milan249350 27.07
319 Georgiev, Krum249252 31.60
320 Matulovic, Milan249258 54.56
321 Byrne, Robert E249259 61.70
322 Meister, Peter249256 23.52
323 Brunner, Lucas249149 22.59
324 Unzicker, Wolfgang249158 64.51
325 Pekarek, Ales249152 28.04
326 Ornstein, Axel249161 37.69
327 Tunik, Gennady249056 36.59
328 Petrosian, Arshak B249050 36.04
329 Plaskett, Jim249054 29.79
330 Gomez Baillo, Jorge H248959 30.70
331 Ivkov, Borislav248954 56.13
332 Meduna, Eduard248950 39.30
333 Rukavina, Josip248967 47.09
334 Efimov, Igor248962 29.29
335 Zilberstein, Valery I248971 46.72
336 Schussler, Harry248952 32.52
337 Vitolinš, Alvis248858 43.54
338 Wedberg, Tom248850 36.10
339 Popchev, Milko248852 25.14
340 Granda Zuńiga, Julio E248852 22.85
341 Mainka, Romuald248753 26.63
342 Titov, German248758 26.68
343 Marin, Mihail248755 24.69
344 Legky, Nikolay A248658 34.72
345 Tischbierek, Raj248653 27.27
346 Averbakh, Yury L248670 67.90
347 Malevinsky, Alexander A248668 39.85
348 Ledger, Andrew248566 20.61
349 Okhotnik, Vladimir248558 39.84
350 Norwood, David248555 21.24
351 Arbakov, Valentin248560 37.92
352 Arkell, Keith C248452 28.97
353 Nijboer, Friso248453 24.60
354 Womacka, Mathias248466 23.51
355 Palac, Mladen248463 18.87
356 Saltaev, Mihail248466 27.12
357 Rytshagov, Mikhail248464 22.13
358 Fernandez Garcia, Jose Luis248359 35.66
359 Rogulj, Branko248370 38.41
360 Dueball, Juergen248370 44.76
361 Velikov, Petar248352 38.75
362 Kosten, Anthony C248249 31.44
363 Sznapik, Aleksander248251 38.89
364 Akhmilovskaya, Elena248261
365 Vogt, Lothar H248251 37.95
366 Klundt, Klaus248262 48.02
367 Shabalov, Alexander248252 22.30
368 Serper, Grigory248153 20.30
369 Ioseliani, Nana248156 27.88
370 Flear, Glenn C248150 30.88
371 Ionescu, Constantin248156 31.30
372 Skembris, Spyridon248152 31.86
373 Blatny, Pavel248050 21.52
374 Kraidman, Yair248068 57.16
375 Garcia Palermo, Carlos248053 36.08
376 Hazai, Laszlo248053 36.55
377 Sanna, Gianlazzaro247975 29.72
378 Sideif Sade, Fikret I247964 37.99
379 Trapl, Jindrich247873 47.77
380 Rechlis, Gad247856 22.90
381 Braga, Fernando247757 31.48
382 Rubinetti, Jorge A247759 44.75
383 Brooks, Michael A247761 28.70
384 Řgaard, Leif247674 37.98
385 Levitt, Jonathan247651 26.58
386 Yuferov, Sergey N247666 44.08
387 Valkesalmi, Kimmo247555 28.66
388 Ghinda, Mihail Viorel247560 40.43
389 Zlotnik, Boris A247564 43.21
390 Kallai, Gabor247457 30.86
391 Kouatly, Bachar247452 31.83
392 Murshed, Niaz247456 23.63
393 Abramovic, Boško247350 38.88
394 Vukic, Milan247356 46.37
395 Dzuban, Oleg I247265
396 Tringov, Georgy P247262 52.82
397 Szekely, Peter247255 34.90
398 Schmidt, Wlodzimierz247249 46.72
399 Padevsky, Nikola B247262 56.59
400 Frolov, Artur247258 19.42
401 Lautier, Joel247149 16.72
402 Vallifuoco, Giacomo247166 32.66
403 Moroz, Alexander247058 28.95
404 Ermenkov, Evgenij247053 40.26
405 Schoenthier, Frank247074 31.12
406 Cramling, Pia247052 26.69
407 Motwani, Paul247056 27.55
408 Howell, James C247055 22.62
409 Lima, Darcy247062 27.61
410 Kogan, Boris246971
411 Brodsky, Michail246962 20.76
412 Djukic, Zeljko246870 30.55
413 Khmelnitsky, Igor N246865 21.36
414 Reshevsky, Samuel H246760 78.10
415 Szabó, László246773 72.78
416 Klaric, Zlatko246753 33.19
417 Ilincic, Zlatko246752 21.64
418 Temirbaev, Serik246661
419 Davies, Nigel R246649 29.42
420 Gurgenidze, Bukhuti I246660 56.13
421 Lombardy, William J246673 52.07
422 Sunye Neto, Jaime246554 32.66
423 Knezevic, Milorad246460 53.17
424 Mednis, Edmar J246454 52.77
425 Varavin, Viktor246465 22.61
426 Vilela, Jose Luis246457 36.78
427 Marangunic, Srdjan246468 46.17
428 Schlosser, Philipp246454 21.37
429 Tempone, Marcelo246359 27.32
430 Orso, Miklos246362 33.56
431 Grivas, Efstratios246355 23.75
432 Semeniuk, Alexander A246364 37.31
433 Mascarinas, Rico246357 36.83
434 Rajkovic, Dusan246352 47.54
435 Hausner, Ivan246255 37.71
436 Sigurjónsson, Gudmundur246271 42.27
437 Karasev, Vladimir I246264 51.54
438 Piasetski, Leon David246270
439 Vokác, Marek246253 31.07
440 Schmittdiel, Eckhard246151 29.63
441 Dizdarevic, Emir246152 31.75
442 Cabrilo, Goran246152 31.50
443 Lukov, Valentin246156 34.05
444 Djuric, Stefan246050 34.43
445 Wang Zili246062 21.55
446 Petkevich, Jusefs246065 49.03
447 Wirthensohn, Heinz246056 38.66
448 Avshalumov, Alex246060 25.83
449 Gruenenwald, Joerg245969 24.57
450 Kapengut, Albert Z245970 45.49
451 Strikovic, Aleksa245853 28.63
452 Ardiansyah, Haji245871 38.07
453 Ekstroem, Roland245857 33.61
454 Lechtynsky, Jiri245754 42.10
455 Staniszewski, Piotr245756 23.32
456 Hecht, Hans-Joachim245766 50.92
457 Negulescu, Adrian245761 28.56
458 Ernst, Thomas245751 29.37
459 Ostojic, Predrag245668 51.86
460 Lutz, Christopher245654 18.85
461 Veinger, Itzhak245672 51.49
462 Barbulescu, Dan245567 25.52
463 Plachetka, Jan245550 44.87
464 Popov, Luben245570 53.92
465 Nemet, Ivan245557 46.71
466 Gallagher, Joseph G245552 25.66
467 Brestian, Egon245557 25.43
468 Janovsky, Sergey245463 29.87
469 Kiik, Kalle245460 26.89
470 Ryskin, Alexander245475 26.96
471 Hawelko, Marek245453 30.39
472 Lin Ta245469 26.92
473 Sendera, Jaroslaw245473 24.68
474 Karolyi, Tibor Jr245352 28.13
475 Stempin, Pawel245351 30.47
476 Lagunow, Alexander245273 22.46
477 Martin del Campo, Roberto245256
478 Romero Holmes, Alfonso245256 24.59
479 Verduga, Denis Homero245261
480 Conquest, Stuart245149 22.83
481 Krnic, Zdenko245163 42.25
482 Cramling, Dan245169 30.90
483 Buecker, Peter245162
484 Pribyl, Josef245156 42.22
485 Marinkovic, Ivan245155 22.46
486 Kuijf, Marinus245152 29.88
487 Gurevich, Dmitry245050 33.30
488 Thorhallsson, Throstur245058 20.78
489 Kaminski, Uwe244956 27.37
490 Schulte, Oliver244966 21.03
491 Murugan, Krishnamoorthy244958 25.43
492 Cifuentes Parada, Roberto244854 32.03
493 Anic, Darko244863 32.67
494 Horvath, Tamas244857 38.19
495 Nikolic, Zivoslav244853 36.05
496 Neckar, Lubomir244871 39.41
497 Semkov, Semko244856 29.84
498 Ivanov, Sergey244861 28.26
499 Rakic, Tomislav244770 55.14
500 Luther, Thomas244753 20.16

These ratings, calculated as of December 31, 1989, incorporate all games (against rated opponents) played in the time between January 1, 1989 and December 31, 1989, along with the ratings that were already calculated as of December 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 December 31, 1989. This represents the player's estimated strength on January 1, 1990.

+/- 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 January 1, 1990. The +/- value represents the standard deviation of that estimate; the player's true strength on January 1, 1990 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 January 1, 1990. 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 December 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.

Back to top

Home