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Top 10 active players as of March 31, 1986


Top 500 active players as of March 31, 1986

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28185059.5% #222.96
2 Karpov, Anatoly E27894928.9% #334.86
3 Korchnoi, Viktor L2700481.2% #2555.02
4 Jussupow, Artur M2698501.3% #2726.13
5 Beliavsky, Alexander G2694491.1% #2932.29
6 Timman, Jan H2694470.8% #2834.30
7 Vaganian, Rafael A2680490.5% #3734.46
8 Hübner, Robert2677500.5% #4037.40
9 Tal, Mikhail2677490.4% #3949.39
10 Portisch, Lajos2676480.3% #3948.98
11 Khalifman, Alexander2676560.8% #4320.20
12 Sokolov, Andrey Y2668500.4% #4623.03
13 Eingorn, Viacheslav S2667510.3% #4829.35
14 Dolmatov, Sergey V2662520.3% #5327.11
15 Spassky, Boris V2660490.2% #5249.17
16 Ljubojevic, Ljubomir2659490.1% #5335.41
17 Psakhis, Lev B2658490.2% #5427.34
18 Tukmakov, Vladimir B2657500.2% #5540.04
19 Lerner, Konstantin Z2656500.1% #5736.09
20 Polugaevsky, Lev A2654500.1% #5851.36
21 Ribli, Zoltán2649480.1% #6134.57
22 Malaniuk, Vladimir P2649520.1% #6428.69
23 Vasiukov, Evgeny A2645610.3% #7353.07
24 Andersson, Ulf2645490.1% #6634.76
25 Dokhoian, Yury2645560.2% #7021.43
26 Dorfman, Iosif D2644550.1% #7033.91
27 Dvoiris, Semen I2644550.2% #7127.41
28 Agzamov, Georgy T264250 #6931.57
29 Romanishin, Oleg M263748 #7334.22
30 Miles, Anthony J263747 #7230.93
31 Nunn, John D M263548 #7530.93
32 Sveshnikov, Evgeny E263550 #7736.14
33 Lputian, Smbat G263250 #7828.13
34 Short, Nigel D263248 #7820.83
35 Chernin, Alexander M263150 #8026.07
36 Seirawan, Yasser262849 #8226.02
37 Bronstein, David I2628730.5% #10062.12
38 Vyzmanavin, Alexey262654 #8926.25
39 Smyslov, Vassily V262451 #8965.02
40 Gulko, Boris F262351 #9039.14
41 Novikov, Igor A262351 #8923.86
42 Nikolic, Predrag262350 #8925.55
43 Smagin, Sergey262250 #9027.56
44 Gurevich, Mikhail N262053 #9527.11
45 Chandler, Murray G262049 #9125.98
46 Torre, Eugenio261950 #9234.41
47 Ehlvest, Jaan261953 #9523.46
48 Rozentalis, Eduardas261555 #10022.84
49 Makarichev, Sergey Y261454 #10132.37
50 Razuvaev, Yury S261450 #9940.47
51 Larsen, Bent261450 #9851.07
52 Gavrikov, Victor N261351 #10028.67
53 Azmaiparashvili, Zurab A261054 #10526.04
54 Pintér, József261051 #10432.39
55 Christiansen, Larry M260651 #10829.76
56 Kavalek, Lubomir260452 #11242.64
57 Dzindzichashvili, Roman Y259954 #11741.90
58 Ubilava, Elizbar E259951 #11535.59
59 Zaichik, Gennady L259853 #11729.14
60 Adorján, András259849 #11535.99
61 Sax, Gyula259848 #11534.79
62 Geller, Efim P259751 #11861.08
63 Balashov, Yury S259650 #11737.05
64 Salov, Valery B259654 #12121.85
65 Agdestein, Simen259651 #12018.88
66 Suba, Mihai259550 #11838.83
67 Sosonko, Gennadi259450 #11942.87
68 Kharitonov, Andrey Y259354 #12426.98
69 Yurtaev, Leonid259256 #12626.91
70 Ivanchuk, Vassily259261 #13017.04
71 Mikhalchishin, Adrian B259050 #12431.37
72 Kuzmin, Gennady P258954 #12840.20
73 Darga, Klaus V2588730.1% #14252.10
74 Yudasin, Leonid G258852 #12826.65
75 Panchenko, Alexander N258852 #12732.49
76 Naumkin, Igor2587680.1% #13920.64
77 Eolian, Levon S258768 #14126.54
78 Petrosian, Arshak B258554 #13132.29
79 Hort, Vlastimil258549 #12942.22
80 Podgaets, Mikhail Y258457 #13438.69
81 Yermolinsky, Alex V258455 #13427.96
82 Smejkal, Jan258350 #13140.02
83 Gipslis, Aivars258361 #13949.15
84 Ftácnik, Lubomír258249 #13128.42
85 Tseshkovsky, Vitaly V258250 #13241.52
86 Gheorghiu, Florin258251 #13341.98
87 van der Wiel, John T H258149 #13326.64
88 Parma, Bruno258165 #14344.25
89 Smirin, Ilia258067 #14518.19
90 Bagirov, Vladimir K257855 #13949.62
91 Olafsson, Helgi257651 #13829.63
92 Kochiev, Alexander257654 #14030.02
93 Speelman, Jonathan S257649 #13729.50
94 Bareev, Evgeny257658 #14419.36
95 Yakovich, Yuri257557 #14423.34
96 Panno, Oscar R257562 #14651.04
97 Tarjan, James E257559 #14534.11
98 Chekhov, Valery A257450 #14130.34
99 Shneider, Aleksandr257359 #14723.86
100 Pigusov, Evgeny257352 #14324.99
101 Popovic, Petar257250 27.13
102 Nogueiras, Jesus257151 26.70
103 Neverov, Valery257061 21.78
104 Hulak, Krunoslav256952 34.85
105 Gorelov, Sergey G256954 28.62
106 Timoshchenko, Gennady256961 36.92
107 Chiburdanidze, Maia G256852 25.20
108 Vaisser, Anatoli256850 37.07
109 Alburt, Lev O256650 40.61
110 Kengis, Edvins256454 26.96
111 Marjanovic, Slavoljub256250 31.23
112 Oll, Lembit256154 19.93
113 Byrne, Robert E256058 57.94
114 Anikaev, Yury256069 37.76
115 Graf, Alexander255961 23.60
116 Rashkovsky, Nukhim N255951 39.95
117 Gligoric, Svetozar255953 63.16
118 Velimirovic, Dragoljub255952 43.88
119 Matanovic, Aleksandar255767 55.86
120 London, Dimitri255763 23.36
121 Knaak, Rainer F255749 33.04
122 Savon, Vladimir A255668 45.51
123 Didishko, Vereslav255569 36.97
124 Georgiev, Kiril255551 20.34
125 Vorotnikov, Vladislav V255559 38.62
126 Najdorf, Miguel255468 75.95
127 Benjamin, Joel L255452 22.05
128 Browne, Walter S255350 37.22
129 Polovodin, Igor A255372 31.02
130 Gufeld, Eduard E255263 50.03
131 Hansen, Curt255149 21.54
132 Quinteros, Miguel A255151 38.26
133 Uhlmann, Wolfgang255150 51.01
134 Ivanov, Igor V255057 39.23
135 Korzubov, Peter255059 24.25
136 Cámpora, Daniel H254956 28.75
137 Faragó, Iván254849 39.99
138 Kupreichik, Viktor D254850 36.74
139 Gurgenidze, Bukhuti I254855 52.38
140 Ostermeyer, Peter254758 42.47
141 Glek, Igor V254757 24.40
142 Goldin, Alexander254566 21.09
143 Huzman, Alexander254569 23.97
144 Wedberg, Tom254556 32.35
145 Guseinov, Aidyn254368 34.25
146 Vladimirov, Evgeny Y254370 29.20
147 Csom, István254351 45.83
148 Kurajica, Bojan254351 38.38
149 Matulovic, Milan254257 50.81
150 Mokrý, Karel254249 27.15
151 Henley, Ron W254157 29.32
152 Karlsson, Lars254151 30.72
153 Abramovic, Boško254053 35.13
154 Taimanov, Mark E254056 60.15
155 Barua, Dibyendu254059 19.43
156 Arkhipov, Sergey254055 31.77
157 Dueball, Juergen253871 41.01
158 Hazai, Laszlo253856 32.80
159 Kremenetsky, Anatoly M253673 47.21
160 Kruppa, Yuri253667 21.78
161 Zapata, Alonso253651 27.61
162 Kovacevic, Vladimir253552 44.01
163 Kholmov, Ratmir D253453 60.88
164 Ekstroem, Roland253369 29.86
165 Reshevsky, Samuel H253263 74.35
166 Ivkov, Borislav253253 52.38
167 Sturua, Zurab253259 26.81
168 Andrianov, Nikolai253271 24.28
169 Mestel, A Jonathan253152 29.05
170 Spraggett, Kevin B253051 31.39
171 Palatnik, Semen A253057 36.01
172 Garcia Palermo, Carlos253051 32.33
173 Cebalo, Mišo252950 41.15
174 Lobron, Eric252949 25.90
175 Cherepkov, Alexander V252868 65.42
176 Yuferov, Sergey N252869 40.33
177 Liberzon, Vladimir M252772 49.02
178 Kindermann, Stefan252750 26.26
179 Kogan, Boris252757
180 Gaprindashvili, Nona252764 44.91
181 García Gonzáles, Guillermo252751 32.31
182 Ivanov, Alexander V252757 29.91
183 Jansa, Vlastimil252650 43.34
184 Flear, Glenn C252454 27.13
185 Morovic Fernández, Iván E252355 23.02
186 Dlugy, Maxim252350 20.17
187 Pétursson, Margeir252250 26.13
188 Vitolinš, Alvis252161 39.79
189 deFirmian, Nicholas E252150 28.68
190 Keene, Raymond252066
191 Veingold, Aleksander252067 32.47
192 Meduna, Eduard252052 35.55
193 Georgadze, Tamaz V251854 38.39
194 Groszpeter, Attila251753 25.81
195 Velikov, Petar251751 35.00
196 Rukavina, Josip251553 43.34
197 Unzicker, Wolfgang251557 60.76
198 Fedorowicz, John P251551 27.51
199 Arnason, Jon L251351 25.38
200 Gruenfeld, Yehuda251354 30.09
201 Drasko, Milan251154 23.32
202 Franco Ocampos, Zenon251169 29.88
203 Rogers, Ian251151 25.77
204 Vukic, Milan251062 42.62
205 Murey, Yakov250956 44.66
206 Vogt, Lothar H250951 34.20
207 Fernandez Garcia, Jose Luis250960 31.91
208 Bönsch, Uwe250850 27.46
209 Nemet, Ivan250771 42.96
210 Bischoff, Klaus250753 24.81
211 Grigorian, Karen A250760 38.57
212 Greenfeld, Alon250655 21.95
213 Suetin, Alexey S250666 59.37
214 Haik, Aldo250552 33.45
215 Lukin, Andrei M250560 37.59
216 Gomez Baillo, Jorge H250564 26.94
217 Inkiov, Ventzislav250449 29.87
218 Hjartarson, Jóhann250449 23.15
219 Lukacs, Peter250450 35.73
220 Kuporosov, Viktor250363 24.51
221 Sunye Neto, Jaime250354 28.91
222 Kraidman, Yair250168 53.41
223 Hawelko, Marek250156 26.64
224 Barlov, Dragan250151 29.17
225 Klovans, Janis250059 50.97
226 Anand, Viswanathan250061 16.30
227 Moskalenko, Viktor250064 25.32
228 Nikolic, Zivoslav249856 32.30
229 Basin, Leonid249857 28.36
230 Barbero, Gerardo F249857 24.61
231 Kuzmin, Alexey249866 23.06
232 Mednis, Edmar J249662 49.02
233 Cvitan, Ognjen249652 24.47
234 Olafsson, Fridrik249574 51.18
235 Shamkovich, Leonid A249558 62.83
236 Rodriguez, Amador249551 29.56
237 Kirov Ivanov, Nino249451 40.56
238 Ivanovic, Božidar249451 39.60
239 Yrjola, Jouni249452 26.44
240 Ziatdinov, Raset249466 27.26
241 Wolf, Volker249365 28.57
242 Minic, Dragoljub249364 49.07
243 Portisch, Ferenc249260 46.97
244 Mnatsakanian, Eduard A249257 47.32
245 Stohl, Igor249250 21.51
246 Lein, Anatoly249253 55.01
247 Simic, Radoslav249257 37.81
248 Radulov, Ivan249154 47.23
249 Dreev, Alexey249060 17.20
250 Lombardy, William J249055 48.32
251 Schmidt, Wlodzimierz248950 42.97
252 Georgiev, Krum248952 27.85
253 Podzielny, Karl Heinz248867 31.56
254 Plachetka, Jan248850 41.12
255 Birnboim, Nathan248864 35.34
256 Vaulin, Alexander248769 29.04
257 Plaskett, Jim248749 26.04
258 Buturin, Vladimir248774 42.37
259 Rivas Pastor, Manuel248656 25.72
260 Schussler, Harry248652 28.77
261 Ghinda, Mihail Viorel248653 36.68
262 Staniszewski, Piotr248655 19.57
263 Petrushin, Alexander I248659 39.06
264 Tatai, Stefano248554 48.02
265 Pytel, Krzysztof248457 40.88
266 Soppe, Guillermo248471 25.54
267 Tringov, Georgy P248455 49.07
268 Shabanov, Yury F248364 48.39
269 Heinbuch, Detlef248257 25.23
270 Kudrin, Sergey248150 26.57
271 Wirthensohn, Heinz248157 34.91
272 Klaric, Zlatko248156 29.44
273 Řgaard, Leif248161 34.24
274 Aseev, Konstantin N248155 25.45
275 Epishin, Vladimir248060 20.72
276 Hodgson, Julian M248052 22.68
277 Van der Sterren, Paul248052 30.04
278 Kishnev, Sergey248067 29.41
279 Popov, Luben248063 50.18
280 Antunes, Antonio248067 24.15
281 Gofshtein, Leonid D248062 32.94
282 Stoica, Valentin248064 36.13
283 Kaidanov, Gregory S248056 26.47
284 Ionov, Sergey247974 24.23
285 Ree, Hans247952 41.54
286 Donchev, Dimitar I247950 27.69
287 Nikolac, Juraj247865 53.94
288 Khasin, Alexander247861 34.92
289 Raicevic, Momcilo247862
290 Seret, Jean Luc247763
291 Szekely, Peter247652 31.15
292 Sahovic, Dragutin247655 45.65
293 Pekarek, Ales247663 24.29
294 Ernst, Thomas247657 25.62
295 Espig, Lutz247555 37.24
296 Botterill, George Steven247572
297 Hebden, Mark247554 28.13
298 Dizdar, Goran247557 27.32
299 Vera, Reynaldo247453 25.23
300 Pfleger, Helmut247455 42.65
301 Antoshin, Vladimir S247271 56.88
302 Legky, Nikolay A247172 30.96
303 Tashkhodzhaev, A.247068
304 Barbulescu, Dan247065 21.77
305 Helmers, Knut J247056 29.15
306 Petrienko, Vladimir247070 31.06
307 Peters, John A246967 35.14
308 Tisdall, Jonathan D246858 27.60
309 Prandstetter, Eduard246852 37.29
310 Soltis, Andrew E246861 38.84
311 Sigurjónsson, Gudmundur246753 38.52
312 Renman, Nils Gustaf246661
313 Benko, Pal C246664 57.71
314 Horvath, Jozsef246656 21.63
315 Zaitsev, Igor A246565 47.84
316 Van Wijgerden, Cornelis246567 35.86
317 Ardiansyah, Haji246563 34.32
318 Rajkovic, Dusan246561 43.79
319 Spassov, Liuben246552 43.02
320 Govedarica, Radovan246469 38.13
321 Popchev, Milko246459 21.39
322 Schneider, Lars Ake246460
323 Hartston, William R246365 38.63
324 Giorgadze, Giorgi246371 21.47
325 Toth, Bela246358 42.94
326 Efimov, Igor246368 25.54
327 Andres Mendez, Miguel246370
328 Hug, Werner246361 33.56
329 Braga, Fernando246258 27.73
330 Tseitlin, Mikhail S246258 38.79
331 Filipovic, Branko246259 28.48
332 Shvidler, Eliahu246262 26.28
333 Gurevich, Dmitry246152 29.55
334 Lalev, Dimitar246165 26.21
335 Thorsteins, Karl246054 21.47
336 Mirkovic, Slobodan246065 27.68
337 Bilek, István246063 53.64
338 Strauss, David J245971 39.65
339 Ornstein, Axel245956 33.93
340 Ligterink, Gert245955 36.37
341 Bastian, Herbert245958 33.31
342 Hecht, Hans-Joachim245961 47.17
343 Gutman, Lev245951 40.51
344 Lau, Ralf245853 26.45
345 Valkesalmi, Kimmo245759 24.91
346 Wilder, Michael245765 23.54
347 Knezevic, Milorad245750 49.42
348 Bany, Jerzy245754 25.07
349 Thipsay, Praveen Mahadeo245654 26.63
350 Yap, Andronico245652
351 Handoko, Edhi245558 25.59
352 Frias, Victor J245461 30.14
353 Calvo Minguez, Ricardo245473 42.44
354 Womacka, Mathias245466 19.76
355 Lalic, Bogdan245360 22.06
356 Kurtenkov, Atanas245357 22.66
357 Bukal, Vladimir Sr245359 46.41
358 Loginov, Valery A245358 30.30
359 Serper, Grigory245376 16.55
360 Ochoa de Echaguen, F Javier245371 31.57
361 Lechtynsky, Jiri245350 38.35
362 Garcia, Gildardo245258 32.06
363 Enklaar, Bertus F245270
364 Cifuentes Parada, Roberto245269 28.28
365 Qi Jingxuan245157 38.39
366 Hermann, Manfred245166 43.58
367 Karner, Hillar245167 50.68
368 Zuckerman, Bernard245173 42.99
369 Lanka, Zigurds245066 25.86
370 Bielczyk, Jacek245057 33.11
371 Ricardi, Pablo245055 24.10
372 Klundt, Klaus245066 44.27
373 Pachmann, Ludek245065 61.89
374 Eslon, Jaan244970 34.07
375 Bass, Leonid244976 28.84
376 Foisor, Ovidiu244954 26.98
377 Hertneck, Gerald244862 22.54
378 Sygulski, Artur244851 25.69
379 Velickovic, Sasa244865 34.99
380 Murshed, Niaz244863 19.88
381 Li Zunian244856 28.23
382 Barczay, Laszlo244862 50.11
383 Bjelajac, Milan244771 38.05
384 Gruenberg, Hans Ulrich244751 30.23
385 Nun, Josef244666 52.69
386 Ambroz, Jan244657 31.79
387 Vokác, Marek244659 27.32
388 Forintos, Gyözö V244562 50.67
389 Hellers, Ferdinand244557 17.18
390 Mariotti, Sergio244565 39.64
391 Djuric, Stefan244551 30.68
392 Pelts, Roman244570 49.05
393 Nun, Jiri244475 28.68
394 Spiridonov, Nikola244451 48.09
395 Tischbierek, Raj244451 23.52
396 Arkell, Keith C244469 25.23
397 Klinger, Josef244452 18.82
398 Raicevic, Vladimir244457 36.91
399 Ermenkov, Evgenij244350 36.51
400 Adianto, Utut244262 21.04
401 Alexandria, Nana244275 36.47
402 Bisguier, Arthur B244171 56.48
403 Santo Roman, Marc244062 25.55
404 Dobrovolsky, Ladislav244066 35.27
405 Veinger, Itzhak243970 47.74
406 Lanc, Alois243955 38.12
407 Keller, Dieter243967 49.70
408 Kantsler, Boris243864 23.95
409 Sanna, Gianlazzaro243764 25.96
410 Derikum, Axel243772 31.88
411 Danailov, Silvio243654 24.94
412 Dzuban, Oleg I243674
413 Filipowicz, Andrzej243666 47.88
414 Kelecevic, Nedeljko243573 39.05
415 Hernandez, Roman243553 36.36
416 Schneider, Attila243562 30.96
417 Casper, Thomas243557 27.04
418 Zagrebelny, Sergey243567
419 De Wit, Johannes S243462 21.51
420 Van Riemsdijk, Herman C243467 37.60
421 Sisniega, Marcel243457 26.68
422 Orlov, Georgi243471
423 Sharif, Mershad243464 33.72
424 Pliester, Leon243360 31.61
425 Sideif Sade, Fikret I243363 34.25
426 Watson, William N243352 23.95
427 Mascarinas, Rico243370 33.08
428 Ionescu, Constantin243366 27.55
429 Blatny, Pavel243256 17.77
430 Kouatly, Bachar243252 28.08
431 Doda, Zbigniew243269 55.11
432 Robatsch, Karl243263 57.46
433 Davies, Nigel R243159 25.67
434 Leow Leslie M243172
435 Wiedenkeller, Michael243157 23.22
436 Doncevic, Dario243159 28.22
437 Ghitescu, Theodor243065 52.19
438 Sznapik, Aleksander243050 35.14
439 Gauglitz, Gernot243060 23.76
440 Steinbacher, Matthias243066 34.54
441 Barle, Janez242965 34.03
442 McCambridge, Vincent242957 26.06
443 Skembris, Spyridon242958 28.11
444 Wittmann, Walter242958 38.05
445 Zahariev, Zahari242965 24.56
446 Szmetan, Jorge242969 35.85
447 Kojder, Konrad242876 30.21
448 Heidrich, Manfred242864 29.34
449 Borm, Franciscus WM242762
450 Kristiansen, Jens242751 33.85
451 Monin, Nikolay242773 38.96
452 Akesson, Ralf242761 25.15
453 Hawksworth, John C242664 22.32
454 Lengyel, Levente242663 52.80
455 Littlewood, Paul E242673 30.20
456 Imanaliev, Taalaibek242662
457 Garcia Martinez, Silvino242552 41.74
458 Malevinsky, Alexander A242568 36.10
459 Rigo, Janos242561 37.43
460 Cabrilo, Goran242461 27.75
461 Manouck, Thierry242468 28.88
462 Jailjan, M.242466
463 Schweber, Samuel242366 49.71
464 Jakobsen, Ole242358 43.45
465 Xu Jun242364 23.54
466 Bronstein, Luis242364 39.83
467 Bellin, Robert242268 33.75
468 Semkov, Semko242257 26.09
469 Adamski, Jan242252 42.39
470 Ost Hansen, Jacob242160
471 Martin, Andrew D242160 28.87
472 Karolyi, Tibor Jr242157 24.38
473 Westerinen, Heikki MJ242152 41.92
474 Rubinetti, Jorge A242161 40.99
475 Pedersen, Erik242161 27.55
476 Kestler, Hans-Günter242170 46.30
477 Vilela, Jose Luis242152 33.03
478 Saeed, Saeed Ahmed242160
479 Martinovic, Slobodan242052 40.68
480 Pribyl, Josef242054 38.47
481 Dejkalo, Stefan242054 26.46
482 Sehner, Norbert242060 26.15
483 Polgar, Zsuzsa241951 16.94
484 Gerusel, Mathias241972 48.15
485 Bohm, Hans241957 36.21
486 Paulsen, Dirk241862 27.18
487 Reefschlaeger, Helmut241861 41.97
488 Bonin, Jay R241765 30.73
489 Rakic, Tomislav241773 51.39
490 Seppeur, Reinhold241663 30.63
491 Damljanovic, Branko241659 24.79
492 Biriescu, Ioan241669 32.43
493 Wockenfuss, Klaus241655 34.59
494 Rostalski, Walter241574 33.23
495 Janssen, Han241566 26.08
496 Ilic, Zoran241565 22.66
497 Djukic, Zeljko241470 26.80
498 Langeweg, Kick241358 49.07
499 Mortensen, Erling241252 30.98
500 Paehtz, Thomas Sr241151 29.57

These ratings, calculated as of March 31, 1986, incorporate all games (against rated opponents) played in the time between April 1, 1985 and March 31, 1986, along with the ratings that were already calculated as of March 31, 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 March 31, 1986. This represents the player's estimated strength on April 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 April 1, 1986. The +/- value represents the standard deviation of that estimate; the player's true strength on April 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 April 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 March 31, 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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