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Top 10 active players as of February 28, 1986


Top 500 active players as of February 28, 1986

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28185063.2% #222.87
2 Karpov, Anatoly E27794923.9% #434.76
3 Korchnoi, Viktor L2703481.5% #2354.93
4 Beliavsky, Alexander G2698491.3% #2632.20
5 Jussupow, Artur M2696501.4% #2726.04
6 Timman, Jan H2693470.9% #2834.21
7 Vaganian, Rafael A2685490.7% #3334.37
8 Hübner, Robert2680490.6% #3637.31
9 Portisch, Lajos2678480.5% #3748.90
10 Tal, Mikhail2676490.4% #3849.30
11 Khalifman, Alexander2674560.7% #4420.11
12 Ljubojevic, Ljubomir2672490.4% #4235.32
13 Sokolov, Andrey Y2665500.3% #4822.93
14 Spassky, Boris V2661490.2% #5049.08
15 Eingorn, Viacheslav S2659520.3% #5329.26
16 Psakhis, Lev B2659490.2% #5327.25
17 Tukmakov, Vladimir B2658500.2% #5339.95
18 Dolmatov, Sergey V2656520.2% #5727.02
19 Polugaevsky, Lev A2653500.1% #5851.27
20 Ribli, Zoltán2651490.1% #5934.48
21 Andersson, Ulf2647480.1% #6234.67
22 Lerner, Konstantin Z2647510.1% #6435.99
23 Malaniuk, Vladimir P2647520.1% #6428.60
24 Dorfman, Iosif D2642550.3% #7133.82
25 Dokhoian, Yury2642560.2% #7221.34
26 Dvoiris, Semen I2640550.2% #7327.32
27 Agzamov, Georgy T2640500.1% #7031.48
28 Smagin, Sergey2639510.1% #7127.47
29 Romanishin, Oleg M263649 #7234.13
30 Lputian, Smbat G2636490.1% #7428.04
31 Miles, Anthony J263447 #7430.85
32 Nunn, John D M263249 #7630.84
33 Sveshnikov, Evgeny E2631500.1% #7836.05
34 Chernin, Alexander M263050 #7925.97
35 Makarichev, Sergey Y2627550.1% #8632.28
36 Larsen, Bent262751 #8350.98
37 Smyslov, Vassily V262551 #8564.92
38 Seirawan, Yasser262549 #8425.92
39 Bronstein, David I2624720.5% #10062.03
40 Vyzmanavin, Alexey262454 #9026.16
41 Gulko, Boris F262251 #8839.05
42 Ehlvest, Jaan262153 #9123.37
43 Nikolic, Predrag262149 #8925.46
44 Novikov, Igor A262051 #9023.76
45 Short, Nigel D261948 #8920.74
46 Gavrikov, Victor N261651 #9528.58
47 Vasiukov, Evgeny A2615640.2% #10552.97
48 Gurevich, Mikhail N261553 #9727.02
49 Rozentalis, Eduardas261355 #10022.75
50 Geller, Efim P260852 #10460.98
51 Razuvaev, Yury S260750 #10440.38
52 Pintér, József260451 #10632.30
53 Azmaiparashvili, Zurab A260455 #11125.94
54 Kavalek, Lubomir260352 #10942.55
55 Chandler, Murray G260349 #10725.90
56 Christiansen, Larry M260151 #11129.67
57 Torre, Eugenio259951 #11334.32
58 Dzindzichashvili, Roman Y259954 #11541.81
59 Ubilava, Elizbar E259951 #11335.50
60 van der Wiel, John T H259649 #11426.55
61 Tseshkovsky, Vitaly V259551 #11741.43
62 Sosonko, Gennadi259450 #11742.78
63 Sax, Gyula259448 #11734.69
64 Agdestein, Simen259351 #11918.79
65 Zaichik, Gennady L259253 #12229.05
66 Balashov, Yury S259249 #11936.95
67 Adorján, András259149 #11935.91
68 Ftácnik, Lubomír259149 #12028.33
69 Ivanchuk, Vassily259161 #12816.94
70 Kharitonov, Andrey Y259154 #12426.90
71 Yurtaev, Leonid259156 #12626.82
72 Petrosian, Arshak B258855 #12732.20
73 Salov, Valery B258856 #12921.76
74 Mikhalchishin, Adrian B258750 #12431.28
75 Suba, Mihai258650 #12638.74
76 Panchenko, Alexander N258552 #12832.40
77 Eolian, Levon S258468 #14026.45
78 Yudasin, Leonid G258452 #12926.55
79 Naumkin, Igor258468 #14020.55
80 Darga, Klaus V2584730.1% #14452.01
81 Kuzmin, Gennady P258454 #13140.11
82 Gipslis, Aivars258461 #13649.05
83 Hort, Vlastimil258249 #12942.13
84 Podgaets, Mikhail Y258257 #13538.60
85 Yermolinsky, Alex V258155 #13527.88
86 Parma, Bruno258065 #14244.16
87 Smirin, Ilia257867 #14618.10
88 Panno, Oscar R257862 #14350.94
89 Popovic, Petar257649 #13627.04
90 Speelman, Jonathan S257649 #13629.40
91 Kochiev, Alexander257554 #13929.92
92 Chekhov, Valery A257450 #13930.25
93 Bagirov, Vladimir K257454 #14149.53
94 Gheorghiu, Florin257451 #13841.89
95 Smejkal, Jan257450 #13839.93
96 Yakovich, Yuri257457 #14323.25
97 Bareev, Evgeny257358 #14419.27
98 Tarjan, James E257359 #14534.02
99 Shneider, Aleksandr257259 #14623.77
100 Olafsson, Helgi257150 #14129.54
101 Pigusov, Evgeny257052 24.91
102 Neverov, Valery256961 21.69
103 Chiburdanidze, Maia G256752 25.11
104 Timoshchenko, Gennady256761 36.84
105 Gorelov, Sergey G256754 28.53
106 Vaisser, Anatoli256550 36.97
107 Nogueiras, Jesus256451 26.61
108 Hulak, Krunoslav256052 34.76
109 Savon, Vladimir A255968 45.42
110 Marjanovic, Slavoljub255950 31.14
111 Byrne, Robert E255858 57.86
112 Anikaev, Yury255869 37.66
113 Alburt, Lev O255850 40.52
114 Browne, Walter S255851 37.13
115 Gligoric, Svetozar255753 63.07
116 Quinteros, Miguel A255651 38.17
117 Graf, Alexander255661 23.51
118 Knaak, Rainer F255649 32.94
119 Georgiev, Kiril255551 20.25
120 Rashkovsky, Nukhim N255551 39.86
121 Oll, Lembit255554 19.85
122 Matanovic, Aleksandar255467 55.76
123 Didishko, Vereslav255469 36.88
124 Hansen, Curt255249 21.44
125 Vorotnikov, Vladislav V255259 38.53
126 Kurajica, Bojan255150 38.29
127 Polovodin, Igor A255172 30.93
128 Cámpora, Daniel H255056 28.66
129 Mokrý, Karel255049 27.06
130 Velimirovic, Dragoljub255051 43.79
131 Mestel, A Jonathan254954 28.95
132 Ivanov, Igor V254857 39.14
133 Gufeld, Eduard E254862 49.94
134 Kengis, Edvins254855 26.88
135 Korzubov, Peter254859 24.16
136 Karlsson, Lars254751 30.63
137 Faragó, Iván254649 39.91
138 Kupreichik, Viktor D254650 36.65
139 Barua, Dibyendu254659 19.34
140 Uhlmann, Wolfgang254550 50.91
141 Glek, Igor V254557 24.31
142 Najdorf, Miguel254467 75.87
143 Dueball, Juergen254473 40.91
144 Huzman, Alexander254369 23.88
145 Matulovic, Milan254358 50.72
146 Benjamin, Joel L254352 21.96
147 Ostermeyer, Peter254358 42.38
148 Goldin, Alexander254266 21.00
149 London, Dimitri254262 23.27
150 Guseinov, Aidyn254168 34.16
151 Vladimirov, Evgeny Y254170 29.11
152 Gurgenidze, Bukhuti I254155 52.29
153 Reshevsky, Samuel H254163 74.26
154 Taimanov, Mark E253956 60.06
155 Henley, Ron W253857 29.23
156 Sturua, Zurab253659 26.72
157 Hazai, Laszlo253556 32.71
158 Csom, István253551 45.74
159 Kremenetsky, Anatoly M253473 47.12
160 Kruppa, Yuri253467 21.69
161 Spraggett, Kevin B253451 31.30
162 Wedberg, Tom253356 32.26
163 Cebalo, Mišo253350 41.06
164 Kovacevic, Vladimir253252 43.92
165 Kholmov, Ratmir D253153 60.79
166 Zapata, Alonso253151 27.52
167 Ivkov, Borislav253153 52.29
168 Ekstroem, Roland253069 29.77
169 Abramovic, Boško252953 35.04
170 Andrianov, Nikolai252971 24.19
171 Garcia Palermo, Carlos252951 32.24
172 Palatnik, Semen A252757 35.92
173 Cherepkov, Alexander V252768 65.33
174 Yuferov, Sergey N252669 40.23
175 Veingold, Aleksander252667 32.38
176 Lobron, Eric252549 25.81
177 Kindermann, Stefan252549 26.17
178 García Gonzáles, Guillermo252551 32.22
179 Gaprindashvili, Nona252564 44.82
180 Kogan, Boris252557
181 Ivanov, Alexander V252457 29.82
182 Jansa, Vlastimil252350 43.25
183 Vitolinš, Alvis252361 39.70
184 Groszpeter, Attila252252 25.72
185 Morovic Fernández, Iván E252155 22.92
186 deFirmian, Nicholas E252149 28.59
187 Dlugy, Maxim252151 20.08
188 Velikov, Petar251851 34.91
189 Keene, Raymond251765
190 Pétursson, Margeir251750 26.04
191 Georgadze, Tamaz V251654 38.30
192 Arnason, Jon L251651 25.29
193 Liberzon, Vladimir M251671 48.93
194 Fedorowicz, John P251551 27.42
195 Vogt, Lothar H251451 34.11
196 Rukavina, Josip251353 43.25
197 Arkhipov, Sergey251358 31.68
198 Unzicker, Wolfgang251357 60.67
199 Vukic, Milan251262 42.53
200 Rogers, Ian251151 25.68
201 Lukacs, Peter251050 35.64
202 Franco Ocampos, Zenon250968 29.79
203 Gruenfeld, Yehuda250855 29.99
204 Fernandez Garcia, Jose Luis250760 31.82
205 Bischoff, Klaus250753 24.72
206 Shamkovich, Leonid A250659 62.74
207 Drasko, Milan250553 23.23
208 Meduna, Eduard250553 35.46
209 Grigorian, Karen A250560 38.47
210 Haik, Aldo250452 33.36
211 Suetin, Alexey S250466 59.28
212 Lukin, Andrei M250360 37.50
213 Barbero, Gerardo F250257 24.52
214 Sunye Neto, Jaime250154 28.82
215 Nemet, Ivan250171 42.87
216 Kuporosov, Viktor250163 24.42
217 Bönsch, Uwe250150 27.37
218 Kraidman, Yair250068 53.32
219 Wolf, Volker250065 28.48
220 Hawelko, Marek249956 26.55
221 Moskalenko, Viktor249864 25.23
222 Murey, Yakov249857 44.57
223 Barlov, Dragan249751 29.08
224 Inkiov, Ventzislav249750 29.78
225 Anand, Viswanathan249661 16.21
226 Hjartarson, Jóhann249649 23.05
227 Cvitan, Ognjen249652 24.38
228 Basin, Leonid249657 28.26
229 Lombardy, William J249654 48.23
230 Greenfeld, Alon249555 21.86
231 Nikolic, Zivoslav249556 32.21
232 Klovans, Janis249459 50.89
233 Kirov Ivanov, Nino249351 40.47
234 Rodriguez, Amador249351 29.47
235 Mednis, Edmar J249361 48.93
236 Rivas Pastor, Manuel249354 25.62
237 Olafsson, Fridrik249374 51.09
238 Yrjola, Jouni249252 26.34
239 Ziatdinov, Raset249266 27.17
240 Ivanovic, Božidar249251 39.51
241 Stohl, Igor249150 21.42
242 Raicevic, Momcilo249075
243 Simic, Radoslav249056 37.72
244 Kudrin, Sergey249050 26.47
245 Portisch, Ferenc248960 46.89
246 Lalic, Bogdan248958 21.97
247 Dreev, Alexey248860 17.11
248 Radulov, Ivan248854 47.14
249 Birnboim, Nathan248864 35.25
250 Pytel, Krzysztof248757 40.79
251 Tringov, Georgy P248655 48.97
252 Gomez Baillo, Jorge H248664 26.86
253 Buturin, Vladimir248674 42.28
254 Ghinda, Mihail Viorel248653 36.59
255 Georgiev, Krum248652 27.76
256 Mnatsakanian, Eduard A248557 47.23
257 Staniszewski, Piotr248455 19.48
258 Lein, Anatoly248453 54.91
259 Vaulin, Alexander248469 28.94
260 Petrushin, Alexander I248359 38.96
261 Tatai, Stefano248354 47.93
262 Schussler, Harry248351 28.68
263 Řgaard, Leif248365 34.15
264 Schmidt, Wlodzimierz248350 42.88
265 Soppe, Guillermo248270 25.45
266 Shabanov, Yury F248064 48.30
267 Podzielny, Karl Heinz248064 31.47
268 Heinbuch, Detlef247957 25.14
269 Antunes, Antonio247867 24.06
270 Epishin, Vladimir247860 20.63
271 Aseev, Konstantin N247855 25.36
272 Gofshtein, Leonid D247862 32.85
273 Sahovic, Dragutin247755 45.55
274 Zaitsev, Igor A247771 47.75
275 Van der Sterren, Paul247752 29.94
276 Ree, Hans247752 41.45
277 Kishnev, Sergey247767 29.32
278 Wirthensohn, Heinz247757 34.82
279 Plachetka, Jan247751 41.03
280 Dizdar, Goran247656 27.23
281 Stoica, Valentin247665 36.04
282 Popov, Luben247663 50.08
283 Ionov, Sergey247674 24.14
284 Klaric, Zlatko247656 29.34
285 Espig, Lutz247655 37.15
286 Plaskett, Jim247549 25.94
287 Pekarek, Ales247563 24.20
288 Khasin, Alexander247461 34.83
289 Donchev, Dimitar I247350 27.60
290 Hodgson, Julian M247352 22.59
291 Szekely, Peter247352 31.05
292 Ernst, Thomas247357 25.53
293 Botterill, George Steven247372
294 Pfleger, Helmut247255 42.56
295 Minic, Dragoljub247263 48.97
296 Vera, Reynaldo247153 25.14
297 Velickovic, Sasa247064 34.91
298 Gurevich, Dmitry247052 29.46
299 Antoshin, Vladimir S246971 56.79
300 Legky, Nikolay A246972 30.88
301 Helmers, Knut J246957 29.06
302 Barbulescu, Dan246865 21.68
303 Petrienko, Vladimir246870 30.96
304 Sigurjónsson, Gudmundur246853 38.43
305 Nikolac, Juraj246866 53.85
306 Flear, Glenn C246857 27.04
307 Peters, John A246766 35.05
308 Tashkhodzhaev, A.246768
309 Giorgadze, Giorgi246571 21.38
310 Seret, Jean Luc246564
311 Govedarica, Radovan246469 38.04
312 Ardiansyah, Haji246363 34.23
313 Renman, Nils Gustaf246361
314 Van Wijgerden, Cornelis246367 35.76
315 Bisguier, Arthur B246374 56.39
316 Benko, Pal C246363 57.62
317 Prandstetter, Eduard246352 37.20
318 Schneider, Lars Ake246260
319 Hug, Werner246262 33.47
320 Hebden, Mark246256 28.04
321 Rajkovic, Dusan246261 43.70
322 Hartston, William R246265 38.54
323 Spassov, Liuben246252 42.93
324 Andres Mendez, Miguel246170
325 Gutman, Lev246151 40.42
326 Braga, Fernando246158 27.64
327 Horvath, Jozsef246056 21.54
328 Cifuentes Parada, Roberto246070 28.19
329 Bjelajac, Milan246071 37.95
330 Popchev, Milko246059 21.30
331 Lalev, Dimitar245965 26.12
332 Mirkovic, Slobodan245965 27.58
333 Tseitlin, Mikhail S245958 38.70
334 Efimov, Igor245968 25.45
335 Thorsteins, Karl245955 21.37
336 Filipovic, Branko245959 28.39
337 Strauss, David J245871 39.56
338 Knezevic, Milorad245850 49.33
339 Bilek, István245863 53.55
340 Valkesalmi, Kimmo245759 24.82
341 Ligterink, Gert245755 36.28
342 Bastian, Herbert245758 33.22
343 Hermann, Manfred245666 43.49
344 Toth, Bela245558 42.86
345 Feustel, Bernd245575 31.44
346 Shvidler, Eliahu245562 26.19
347 Thipsay, Praveen Mahadeo245554 26.54
348 Bany, Jerzy245454 24.98
349 Kaidanov, Gregory S245359 26.38
350 Klundt, Klaus245367 44.18
351 Handoko, Edhi245358 25.50
352 Hecht, Hans-Joachim245361 47.08
353 Ochoa de Echaguen, F Javier245271 31.48
354 Calvo Minguez, Ricardo245273 42.35
355 Womacka, Mathias245166 19.67
356 Lau, Ralf245153 26.36
357 Soltis, Andrew E245161 38.75
358 Serper, Grigory245076 16.46
359 Enklaar, Bertus F245070
360 Loginov, Valery A245058 30.21
361 Ornstein, Axel245055 33.84
362 Lechtynsky, Jiri245050 38.26
363 Qi Jingxuan244957 38.30
364 Kurtenkov, Atanas244961 22.57
365 Eslon, Jaan244870 33.98
366 Murshed, Niaz244863 19.79
367 Ricardi, Pablo244855 24.01
368 Barczay, Laszlo244861 50.02
369 Nun, Jiri244871 28.59
370 Pachmann, Ludek244865 61.80
371 Pelts, Roman244772 48.96
372 Bass, Leonid244671 28.75
373 Blatny, Pavel244659 17.68
374 Bielczyk, Jacek244657 33.01
375 Li Zunian244656 28.14
376 Raicevic, Vladimir244661 36.82
377 Mariotti, Sergio244665 39.55
378 Sygulski, Artur244551 25.60
379 Ambroz, Jan244557 31.69
380 Karner, Hillar244566 50.59
381 Nun, Josef244465 52.60
382 Vokác, Marek244459 27.23
383 Forintos, Gyözö V244362 50.58
384 Lanka, Zigurds244371 25.77
385 Hellers, Ferdinand244357 17.08
386 Danailov, Silvio244355 24.85
387 Tisdall, Jonathan D244360 27.51
388 Yap, Andronico244354
389 Ermenkov, Evgenij244250 36.41
390 Foisor, Ovidiu244254 26.89
391 Tischbierek, Raj244251 23.43
392 Arkell, Keith C244269 25.14
393 Dobrovolsky, Ladislav244261 35.18
394 Spiridonov, Nikola244151 47.99
395 Santo Roman, Marc244162 25.46
396 Gruenberg, Hans Ulrich244151 30.14
397 Alexandria, Nana244175 36.37
398 Imanaliev, Taalaibek244062
399 Bukal, Vladimir Sr244059 46.32
400 Adianto, Utut243962 20.94
401 Veinger, Itzhak243870 47.65
402 Kuzmin, Alexey243773 22.97
403 Kantsler, Boris243664 23.87
404 Djuric, Stefan243551 30.59
405 Schneider, Attila243561 30.87
406 Frias, Victor J243560 30.05
407 Dzuban, Oleg I243474
408 Filipowicz, Andrzej243466 47.79
409 Van Riemsdijk, Herman C243267 37.51
410 Hernandez, Roman243253 36.26
411 Casper, Thomas243257 26.94
412 Zagrebelny, Sergey243267
413 Sisniega, Marcel243257 26.58
414 Orlov, Georgi243271
415 Sideif Sade, Fikret I243263 34.16
416 De Wit, Johannes S243162 21.42
417 Mascarinas, Rico243170 32.98
418 Wittmann, Walter243158 37.95
419 Sharif, Mershad243164 33.63
420 Pliester, Leon243159 31.52
421 Klinger, Josef243152 18.73
422 Watson, William N243052 23.86
423 Davies, Nigel R243059 25.58
424 Doda, Zbigniew243068 55.02
425 Robatsch, Karl243063 57.37
426 Leow Leslie M243072
427 Doncevic, Dario243059 28.13
428 Wiedenkeller, Michael242957 23.13
429 Gauglitz, Gernot242960 23.67
430 Barle, Janez242865 33.93
431 Ghitescu, Theodor242865 52.09
432 Martinovic, Slobodan242752 40.59
433 Cabrilo, Goran242759 27.66
434 Sanna, Gianlazzaro242664 25.88
435 McCambridge, Vincent242655 25.97
436 Monin, Nikolay242673 38.88
437 Bellin, Robert242669 33.66
438 Szmetan, Jorge242667 35.76
439 Akesson, Ralf242661 25.05
440 Kouatly, Bachar242553 27.98
441 Lengyel, Levente242562 52.71
442 Borm, Franciscus WM242562
443 Zahariev, Zahari242565 24.47
444 Garcia, Gildardo242559 31.96
445 Skembris, Spyridon242558 28.02
446 Kristiansen, Jens242551 33.76
447 Sznapik, Aleksander242550 35.05
448 Hertneck, Gerald242362 22.44
449 Hawksworth, John C242364 22.23
450 Bronstein, Luis242364 39.74
451 Garcia Martinez, Silvino242352 41.65
452 Littlewood, Paul E242274 30.11
453 Banas, Jan242156 38.73
454 Pribyl, Josef242154 38.38
455 Schweber, Samuel242165 49.62
456 Malevinsky, Alexander A242168 36.01
457 Jailjan, M.242166
458 Manouck, Thierry242168 28.79
459 Jakobsen, Ole242058 43.36
460 Rigo, Janos242060 37.33
461 Rubinetti, Jorge A242061 40.91
462 Kelecevic, Nedeljko242066 38.96
463 Martin, Andrew D241960 28.78
464 Sehner, Norbert241960 26.06
465 Adamski, Jan241952 42.30
466 Paehtz, Thomas Sr241952 29.48
467 Saeed, Saeed Ahmed241960
468 Ost Hansen, Jacob241860
469 Karolyi, Tibor Jr241857 24.29
470 Vilela, Jose Luis241851 32.94
471 Dejkalo, Stefan241854 26.37
472 Xu Jun241864 23.45
473 Derikum, Axel241873 31.79
474 Steinbacher, Matthias241865 34.45
475 Westerinen, Heikki MJ241752 41.84
476 Semkov, Semko241757 25.99
477 Polgar, Zsuzsa241651 16.86
478 Pedersen, Erik241661 27.46
479 Bohm, Hans241657 36.12
480 Saidy, Anthony F241676 48.78
481 Seppeur, Reinhold241563 30.54
482 Damljanovic, Branko241559 24.70
483 Biriescu, Ioan241469 32.34
484 Janssen, Han241466 25.98
485 Rakic, Tomislav241373 51.30
486 Rostalski, Walter241374 33.14
487 Wockenfuss, Klaus241355 34.50
488 Djukic, Zeljko241170 26.71
489 Reefschlaeger, Helmut241161 41.89
490 Horvath, Tamas241057 34.35
491 Wilder, Michael241064 23.45
492 Paulsen, Dirk240963 27.09
493 McNab, Colin Anderson240961 25.07
494 Damjanovic, Mato240976 58.93
495 Kuczynski, Robert240963 19.86
496 Gruenenwald, Joerg240869 20.73
497 Przewoznik, Jan240859 28.45
498 Matlak, Marek240868 19.93
499 Kestler, Hans-Günter240872 46.21
500 Brinck Claussen, Bjorn240762

These ratings, calculated as of February 28, 1986, incorporate all games (against rated opponents) played in the time between March 1, 1985 and February 28, 1986, along with the ratings that were already calculated as of February 28, 1985. 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, 1986. This represents the player's estimated strength on March 1, 1986.

+/- 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, 1986. The +/- value represents the standard deviation of that estimate; the player's true strength on March 1, 1986 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, 1986. 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, 1986. 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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