< December 31, 1983     Back to date list    February 29, 1984 >

Top 10 active players as of January 31, 1984


Top 500 active players as of January 31, 1984

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28185165.4% #220.80
2 Karpov, Anatoly E27644916.7% #632.69
3 Korchnoi, Viktor L2728505.1% #1352.86
4 Beliavsky, Alexander G2703501.8% #2130.12
5 Portisch, Lajos2694491.1% #2446.82
6 Timman, Jan H2692480.9% #2632.13
7 Vaganian, Rafael A2690501.1% #2732.29
8 Polugaevsky, Lev A2689511.1% #2849.20
9 Romanishin, Oleg M2682490.7% #3132.06
10 Smyslov, Vassily V2679530.8% #3462.85
11 Ljubojevic, Ljubomir2679490.5% #3333.24
12 Dolmatov, Sergey V2676520.6% #3524.94
13 Andersson, Ulf2675480.4% #3432.59
14 Spassky, Boris V2666490.3% #3947.00
15 Hübner, Robert2666490.3% #4035.23
16 Petrosian, Tigran V2661500.3% #4454.62
17 Tal, Mikhail2658490.2% #4547.23
18 Miles, Anthony J2652480.1% #4928.77
19 Chernin, Alexander M2650570.3% #5423.90
20 Psakhis, Lev B2649490.1% #5125.17
21 Ribli, Zoltán2647500.1% #5432.40
22 Eingorn, Viacheslav S2643600.3% #6227.18
23 Gulko, Boris F2641530.1% #6136.97
24 Jussupow, Artur M2641490.1% #5923.96
25 Dorfman, Iosif D2639520.1% #6031.75
26 Lputian, Smbat G2637520.1% #6225.96
27 Hort, Vlastimil263648 #6240.05
28 Nunn, John D M263049 #6728.77
29 Ftácnik, Lubomír262548 #7126.25
30 Dvoiris, Semen I2625570.1% #7725.24
31 Ehlvest, Jaan2625560.1% #7621.30
32 Geller, Efim P2623500.1% #7458.91
33 Balashov, Yury S262250 #7434.88
34 Kupreichik, Viktor D262152 #7734.58
35 Bronstein, David I2620560.1% #8059.94
36 Sosonko, Gennadi262050 #7640.70
37 Larsen, Bent261850 #7848.91
38 Browne, Walter S261850 #7935.06
39 Malaniuk, Vladimir P261753 #8126.53
40 Sveshnikov, Evgeny E261750 #7933.96
41 Tseshkovsky, Vitaly V261550 #8139.35
42 Agzamov, Georgy T261352 #8429.40
43 Tukmakov, Vladimir B261250 #8437.88
44 Chekhov, Valery A261151 #8528.18
45 Nikolic, Predrag261050 #8523.39
46 Kuzmin, Gennady P260953 #8938.03
47 Seirawan, Yasser260849 #8723.85
48 Christiansen, Larry M260652 #9127.59
49 Kochiev, Alexander260655 #9327.85
50 Razuvaev, Yury S260451 #9238.31
51 Vaisser, Anatoli260453 #9534.90
52 Yurtaev, Leonid260055 #9924.75
53 Kavalek, Lubomir260052 #9740.48
54 Gavrikov, Victor N259852 #9926.51
55 Vyzmanavin, Alexey259761 #10624.08
56 Averbakh, Yury L2597720.2% #11361.97
57 Lerner, Konstantin Z259552 #10133.92
58 Salov, Valery B2595660.1% #11219.68
59 Yudasin, Leonid G259552 #10224.48
60 Vasiukov, Evgeny A259255 #10750.90
61 Dvoretsky, Mark I2591640.1% #11536.14
62 Gipslis, Aivars259159 #11246.97
63 Adorján, András258948 #10633.83
64 Parma, Bruno2585690.1% #12442.09
65 Azmaiparashvili, Zurab A258251 #11523.87
66 Smejkal, Jan258250 #11437.86
67 Sax, Gyula258150 #11532.62
68 Timoshchenko, Gennady258159 #12234.76
69 Didishko, Vereslav257860 #12434.81
70 Rozentalis, Eduardas257462 #13020.68
71 Petrosian, Arshak B257353 #12530.12
72 Byrne, Robert E257358 #12855.78
73 Makarichev, Sergey Y257252 #12630.20
74 Panno, Oscar R257158 #13048.87
75 Kharitonov, Andrey Y257055 #12924.82
76 Rashkovsky, Nukhim N257053 #12837.79
77 Ubilava, Elizbar E257053 #12833.43
78 Gheorghiu, Florin257051 #12739.82
79 Gorelov, Sergey G257061 #13426.45
80 Savon, Vladimir A256859 #13443.35
81 Mestel, A Jonathan256851 #12926.88
82 Ivanovic, Božidar256550 #13137.44
83 Korzubov, Peter256554 #13422.08
84 Taimanov, Mark E256558 #13657.98
85 Torre, Eugenio256550 #13232.24
86 Kremenetsky, Anatoly M256467 #14345.05
87 Kovacevic, Vladimir256452 #13341.85
88 Mikhalchishin, Adrian B256453 #13429.20
89 Zaichik, Gennady L256454 #13526.96
90 Georgadze, Tamaz V256356 #13736.23
91 Knaak, Rainer F256250 #13430.87
92 Quinteros, Miguel A256251 #13536.09
93 Speelman, Jonathan S256250 #13427.33
94 Pigusov, Evgeny255959 #14322.83
95 van der Wiel, John T H255749 #13924.48
96 Karlsson, Lars255750 #13928.55
97 Simic, Radoslav255561 #14735.64
98 Barua, Dibyendu255559 #14617.26
99 Chandler, Murray G255549 #14023.82
100 Averkin, Orest N255473 #15639.93
101 Anikaev, Yury255455 35.59
102 Kurajica, Bojan255349 36.21
103 Guseinov, Aidyn255255 32.08
104 Panchenko, Alexander N255251 30.32
105 Bagirov, Vladimir K255151 47.46
106 Vorotnikov, Vladislav V255160 36.45
107 Stean, Michael F254956 30.41
108 Marjanovic, Slavoljub254751 29.07
109 Podgaets, Mikhail Y254764 36.52
110 Csom, István254650 43.66
111 Sokolov, Andrey Y254656 20.86
112 Dzindzichashvili, Roman Y254656 39.74
113 Kholmov, Ratmir D254654 58.72
114 Suba, Mihai254650 36.66
115 Gligoric, Svetozar254451 60.99
116 Nikolac, Juraj254371 51.77
117 Velimirovic, Dragoljub254253 41.72
118 Zilberman, Nathan R254262 43.74
119 Veingold, Aleksander254258 30.31
120 Tarjan, James E254153 31.94
121 Alburt, Lev O254051 38.44
122 Shereshevsky, Mikhail I253973 33.78
123 Abramovic, Boško253950 32.96
124 Shneider, Aleksandr253658 21.69
125 Novikov, Igor A253661 21.69
126 deFirmian, Nicholas E253551 26.51
127 Gufeld, Eduard E253253 47.87
128 Palatnik, Semen A253261 33.85
129 Faragó, Iván253250 37.83
130 Vogt, Lothar H253150 32.04
131 Short, Nigel D253150 18.66
132 Pintér, József253153 30.23
133 Uhlmann, Wolfgang253049 48.84
134 Thipsay, Praveen Mahadeo252959 24.47
135 Reshevsky, Samuel H252865 72.18
136 Henley, Ron W252750 27.15
137 Gurevich, Mikhail N252764 24.94
138 Ivkov, Borislav252652 50.22
139 Vitolinš, Alvis252658 37.63
140 Sturua, Zurab252659 24.65
141 Lobron, Eric252449 23.73
142 Ivanov, Igor V252452 37.06
143 Andrianov, Nikolai252464 22.11
144 Olafsson, Fridrik252362 49.01
145 Osnos, Viacheslav V252262 48.52
146 Polovodin, Igor A252257 28.86
147 Spassov, Liuben252251 40.86
148 Oll, Lembit252054 17.77
149 Eolian, Levon S251971 24.37
150 Zakharov, Alexander V251966 40.31
151 Wedberg, Tom251951 30.18
152 Najdorf, Miguel251657 73.79
153 Ostermeyer, Peter251555 40.30
154 Kengis, Edvins251555 24.80
155 Cebalo, Mišo251554 38.98
156 Yermolinsky, Alex V251561 25.80
157 Jamieson, Robert Murray251475
158 Keene, Raymond251353
159 Tseitlin, Mikhail S251358 36.62
160 Shamkovich, Leonid A251353 60.66
161 Pfleger, Helmut251353 40.48
162 Meduna, Eduard251250 33.39
163 Ree, Hans251250 39.38
164 Grigorian, Karen A251159 36.40
165 Lutikov, Anatoly S251071 50.98
166 Vladimirov, Evgeny Y251059 27.03
167 García Gonzáles, Guillermo251051 30.14
168 Popovic, Petar250955 24.96
169 Hazai, Laszlo250952 30.63
170 Espig, Lutz250951 35.07
171 Unzicker, Wolfgang250956 58.60
172 Nikolic, Zivoslav250957 30.13
173 Suetin, Alexey S250957 57.21
174 Mnatsakanian, Eduard A250660 45.15
175 Szabó, László250672 66.87
176 Mokrý, Karel250653 24.98
177 Chiburdanidze, Maia G250656 23.04
178 Liberzon, Vladimir M250559 46.86
179 Marovic, Dražen250569 46.05
180 Hulak, Krunoslav250450 32.68
181 Nemet, Ivan250462 40.80
182 Tatai, Stefano250453 45.86
183 Cámpora, Daniel H250454 26.59
184 Velikov, Petar250450 32.84
185 Matanovic, Aleksandar250363 53.69
186 Inkiov, Ventzislav250349 27.70
187 Klovans, Janis250357 48.81
188 Gurgenidze, Bukhuti I250358 50.22
189 Groszpeter, Attila250252 23.64
190 Donchev, Dimitar I250253 25.53
191 Kudrin, Sergey250251 24.40
192 Ivanov, Alexander V250171 27.75
193 Franco Ocampos, Zenon250155 27.72
194 Hansen, Curt250151 19.37
195 Lechtynsky, Jiri250051 36.18
196 Glek, Igor V249961 22.23
197 Agdestein, Simen249955 16.71
198 Schmidt, Wlodzimierz249849 40.81
199 Bukic, Enver249860 46.16
200 Lein, Anatoly249851 52.84
201 Podzielny, Karl Heinz249771 29.39
202 Lukin, Andrei M249760 35.42
203 Spraggett, Kevin B249660 29.22
204 Pachmann, Ludek249566 59.72
205 Gurevich, Dmitry249551 27.39
206 Malich, Burkhard G249462 47.17
207 Biyiasas, Peter249471 33.20
208 Nogueiras, Jesus249453 24.54
209 Strauss, David J249373 37.48
210 Kruppa, Yuri249268 19.61
211 Ionov, Sergey249266 22.06
212 Georgiev, Krum249252 25.69
213 Bikhovsky, Avigdor I249262 28.90
214 Lukacs, Peter249151 33.56
215 Djuric, Stefan249157 28.51
216 Vukic, Milan249054 40.45
217 Bilek, István249061 51.47
218 Rogulj, Branko248971 32.50
219 Gruenfeld, Yehuda248856 27.92
220 Řgaard, Leif248755 32.07
221 Schussler, Harry248751 26.60
222 Rodriguez, Amador248653 27.40
223 Murey, Yakov248651 42.49
224 Gruenberg, Hans Ulrich248454 28.06
225 Jansa, Vlastimil248449 41.18
226 Díez del Corral, Jesús248463 50.82
227 Peters, John A248368 32.97
228 Soltis, Andrew E248363 36.67
229 Matulovic, Milan248254 48.64
230 Zapata, Alonso248253 25.44
231 Calvo Minguez, Ricardo248174 40.27
232 Ghinda, Mihail Viorel248055 34.52
233 Radulov, Ivan247950 45.06
234 Sunye Neto, Jaime247952 26.74
235 Mortensen, Erling247850 28.82
236 Lederman, Leon247769 36.68
237 Kalinitschew, Sergey247774 27.99
238 Petrushin, Alexander I247658 36.89
239 Kindermann, Stefan247652 24.09
240 Mariotti, Sergio247660 37.47
241 Schneider, Lars Ake247554
242 Gutman, Lev247456 38.35
243 Wolf, Volker247465 26.40
244 Todorcevic, Miodrag247470 43.22
245 Bisguier, Arthur B247263 54.31
246 Adamski, Jan247251 40.22
247 Mednis, Edmar J247263 46.86
248 Zaitsev, Igor A247156 45.68
249 Tavadian, Ragik247162
250 Benko, Pal C247158 55.54
251 Hug, Werner247172 31.39
252 Pribyl, Josef247151 36.30
253 Duer, Arne247176 24.56
254 Greenfeld, Alon247059 19.79
255 Vokác, Marek247069 25.15
256 Bönsch, Uwe247050 25.29
257 Sigurjónsson, Gudmundur247053 36.35
258 Popov, Luben246956 48.01
259 Kraidman, Yair246861 51.25
260 Antoshin, Vladimir S246866 54.71
261 Pytel, Krzysztof246859 38.71
262 Van der Sterren, Paul246750 27.87
263 Plaskett, Jim246757 23.87
264 Mochalov, Evgeny V246669 32.26
265 Kristiansen, Jens246552 31.68
266 Arnason, Jon L246552 23.22
267 Plachetka, Jan246549 38.95
268 Kogan, Boris246560
269 Klaric, Zlatko246563 27.27
270 Martinovic, Slobodan246454 38.52
271 Tringov, Georgy P246355 46.90
272 Szekely, Peter246353 28.97
273 Birnboim, Nathan246359 33.18
274 Rukavina, Josip246359 41.17
275 Kirov Ivanov, Nino246252 38.39
276 Feustel, Bernd246263 29.36
277 Pétursson, Margeir246254 23.95
278 Bastian, Herbert246156 31.14
279 Renman, Nils Gustaf246171
280 Karner, Hillar246157 48.51
281 Eslon, Jaan246166 31.91
282 Sharif, Mershad246075 31.55
283 Van Wijgerden, Cornelis246054 33.69
284 Vera, Reynaldo246052 23.06
285 Helmers, Knut J245954 26.98
286 Prandstetter, Eduard245952 35.13
287 Spiridonov, Nikola245952 45.92
288 Hebden, Mark245951 25.95
289 Rodriguez, Ruben245864 37.15
290 Portisch, Ferenc245756 44.81
291 Robatsch, Karl245756 55.30
292 Kaidanov, Gregory S245761 24.30
293 Martz, William E245675
294 Arbakov, Valentin245662 32.01
295 Fernandez Garcia, Jose Luis245558 29.74
296 Martin, Andrew D245558 26.70
297 Shvidler, Eliahu245560 24.11
298 Legky, Nikolay A245368 28.80
299 Raicevic, Vladimir245366 34.74
300 Ost Hansen, Jacob245355
301 Lazic, Miroljub245268 17.59
302 Sznapik, Aleksander245250 32.97
303 Stohl, Igor245257 19.34
304 Barczay, Laszlo245154 47.94
305 Gerusel, Mathias245175 45.98
306 Rajkovic, Dusan245054 41.62
307 McCambridge, Vincent245061 23.90
308 Wockenfuss, Klaus245059 32.42
309 Smagin, Sergey245072 25.40
310 Hamann, Svend245062 43.31
311 Velickovic, Sasa244960 32.83
312 Fedorowicz, John P244958 25.34
313 Lanka, Zigurds244964 23.69
314 Stoica, Valentin244859 33.95
315 Govedarica, Radovan244873 35.96
316 Knezevic, Milorad244851 47.25
317 Scheeren, Peter244857 28.50
318 Hartston, William R244766 36.47
319 Zilberstein, Valery I244765 40.80
320 Bjelajac, Milan244756 35.88
321 Hermann, Manfred244661 41.42
322 Dobrovolsky, Ladislav244656 33.10
323 Levitina, Irina S244558 29.65
324 Padevsky, Nikola B244467 50.67
325 Botterill, George Steven244373
326 Zaltsman, Vitaly F244359 42.26
327 Hecht, Hans-Joachim244266 45.01
328 Rivas Pastor, Manuel244253 23.55
329 Taulbut, Shaun M244266 26.05
330 Seret, Jean Luc244174
331 Dizdar, Goran244155 25.16
332 Commons, Kim S244072 32.52
333 Forintos, Gyözö V244058 48.50
334 Toth, Bela244054 40.78
335 Ernst, Thomas244065 23.45
336 Nei, Iivo243959 52.25
337 Bischoff, Klaus243953 22.64
338 Ardiansyah, Haji243854 32.15
339 Schweber, Samuel243763 47.54
340 Ligterink, Gert243751 34.20
341 Garcia Palermo, Carlos243755 30.16
342 Sygulski, Artur243754 23.52
343 Schneider, Attila243755 28.80
344 Jakobsen, Ole243653 41.28
345 Bellin, Robert243666 31.59
346 Nurkic, Sahbaz243666 27.88
347 Bajovic, Milan243564
348 Giorgadze, Giorgi243565 19.31
349 Bronstein, Luis243565 37.66
350 Bass, Leonid243561 26.67
351 Kagan, Shimon243559 41.82
352 Gruen, Peter243561 27.05
353 Vadasz, Laszlo243468 36.01
354 Ravikumar, Vaidyanathan243263 24.10
355 Alexandria, Nana243269 34.30
356 Eng, Holger243265 22.92
357 Cvetkovic, Srdjan243258 37.92
358 Hebert, Jean243166 26.22
359 Cifuentes Parada, Roberto243172 26.11
360 Brinck Claussen, Bjorn243155
361 Rubinetti, Jorge A243165 38.83
362 Szmetan, Jorge243162 33.68
363 Ambroz, Jan243156 29.62
364 Lukov, Valentin243153 28.14
365 Benjamin, Joel L243059 19.89
366 Rodriguez Vargas, Orestes243063 40.57
367 Nun, Jiri243062 26.51
368 Olafsson, Helgi242957 27.46
369 Loginov, Valery A242964 28.13
370 Rantanen, Yrjo A242855 33.77
371 Lau, Ralf242868 24.28
372 Pekarek, Ales242872 22.12
373 Lalev, Dimitar242759 24.04
374 Kuzmin, Alexey242772 20.90
375 Flear, Glenn C242668 24.96
376 Pliester, Leon242664 29.45
377 Frias, Victor J242656 27.97
378 Wirthensohn, Heinz242657 32.74
379 Zichichi, Alvise242660 45.57
380 Watson, John L242674 32.40
381 Littlewood, Paul E242560 28.04
382 Sahovic, Dragutin242555 43.48
383 Qi Jingxuan242464 36.23
384 Donner, Johannes H242463 56.57
385 Makropoulos, Georgios242466 30.34
386 Goehring, Karl Heinz242465
387 Semkov, Semko242457 23.92
388 Bouaziz, Slim242355 33.79
389 Nun, Josef242359 50.52
390 Davies, Nigel R242363 23.50
391 Haik, Aldo242363 31.28
392 Minic, Dragoljub242373 46.90
393 Hartoch, Robert G242366
394 Danailov, Silvio242363 22.78
395 Ghitescu, Theodor242266 50.02
396 Tompa, Janos242266 36.75
397 Wittmann, Walter242260 35.88
398 Horvath, Tamas242254 32.27
399 Shirazi, Kamran G242163 31.19
400 Sher, Miron N242166 31.59
401 Seppeur, Reinhold242165 28.47
402 Gomez Baillo, Jorge H242073 24.78
403 Ciric, Dragoljub M242074 48.22
404 Krnic, Zdenko242061 36.33
405 Kaiszauri, Konstanty242064 31.27
406 Tisdall, Jonathan D242055 25.43
407 Hase, Juan Carlos242062
408 Imanaliev, Taalaibek241964
409 Sideif Sade, Fikret I241863 32.08
410 Kestler, Hans-Günter241866 44.13
411 Skembris, Spyridon241854 25.94
412 Yrjola, Jouni241862 24.27
413 Mascarinas, Rico241768 30.91
414 Lengyel, Levente241758 50.63
415 Foisor, Ovidiu241756 24.82
416 Bohm, Hans241653 34.04
417 Neckar, Lubomir241666 33.49
418 Bielczyk, Jacek241553 30.93
419 Filipovic, Branko241563 26.32
420 Cabrilo, Goran241555 25.58
421 Doda, Zbigniew241562 52.94
422 Ornstein, Axel241555 31.77
423 Zahariev, Zahari241467 22.39
424 Barlov, Dragan241454 27.00
425 Trapl, Jindrich241472 41.85
426 Garcia Martinez, Silvino241351 39.57
427 Handoko, Edhi241355 23.42
428 Osmanovic, Kemal241363 42.90
429 Rakic, Tomislav241258 49.22
430 Sisniega, Marcel241256 24.51
431 Braga, Fernando241164 25.56
432 Petran, Pal241169 37.38
433 Langeweg, Kick241153 46.90
434 Rogers, Ian241056 23.60
435 Ilic, Zoran241064 20.49
436 Djukic, Zeljko241057 24.63
437 Hernandez, Roman240952 34.19
438 Westerinen, Heikki MJ240850 39.76
439 Ady, Jonathan James240874
440 Morovic Fernández, Iván E240874 20.85
441 Borm, Franciscus WM240761
442 Banas, Jan240755 36.66
443 Lanc, Alois240557 35.95
444 Tischbierek, Raj240553 21.35
445 Kuligowski, Adam240555 28.10
446 Nowak, Ignacy240559 35.05
447 Drasko, Milan240463 21.15
448 Maki, Veijo240458 25.15
449 Kunsztowicz, Uwe240465 40.04
450 Hausner, Ivan240459 31.79
451 Cvitan, Ognjen240363 22.31
452 Ermenkov, Evgenij240352 34.34
453 Jacoby, Gisbert240268 40.74
454 Sydor, Andrzej240258 47.08
455 Kelecevic, Nedeljko240058 36.89
456 Hodgson, Julian M239959 20.52
457 Reefschlaeger, Helmut239960 39.81
458 Fedder, Steen239963 32.63
459 Bojkovic, Slobodan239967 38.51
460 Trifunov, Dimitar239865 20.07
461 Pritchett, Craig William239870
462 Pedersen, Erik239756 25.39
463 Szymczak, Zbigniew239751 32.07
464 Martin Gonzalez, Angel239662 31.08
465 Staniszewski, Piotr239662 17.41
466 Ochoa de Echaguen, F Javier239666 29.41
467 Herzog, Adolf239568 30.65
468 Damjanovic, Mato239564 56.86
469 Vilela, Jose Luis239552 30.87
470 van Scheltinga, Tjeerd D239568 69.90
471 Borik, Otto239458 36.35
472 Heinbuch, Detlef239469 23.06
473 Angantysson, Haukur239472 35.16
474 Doncevic, Dario239364 26.05
475 Kataev, Simcho239368
476 Ksieski, Zbigniew239356 30.08
477 Akesson, Ralf239262 22.97
478 Cramling, Dan239258 24.98
479 Hjartarson, Jóhann239255 20.97
480 Knoppert, Erik GJ239273
481 Palacios, Antonio239271 31.22
482 Velez, Nestor239165 27.74
483 Milovanovic, Rade239169 29.22
484 Tomaszewski, Roman239071 23.71
485 Adianto, Utut239058 18.87
486 Peev, Peicho Chonev239068 43.83
487 Santos, Luis238966 28.59
488 Tiller, Bjorn238857 25.04
489 Diaz, Joaquin C238758 35.57
490 Grigorov, Jordan N238662 30.15
491 McNab, Colin Anderson238665 22.99
492 Welin, Thomas238670 24.40
493 Soppe, Guillermo238674 23.37
494 Karpeshov, Oleg238666 29.98
495 Gonsior, Evzen238668 52.15
496 Sibarevic, Milenko238465 38.88
497 Filipowicz, Andrzej238466 45.72
498 Stempin, Pawel238454 24.55
499 Soos, Bela238471 53.90
500 Budde, Vladimir238366 31.10

These ratings, calculated as of January 31, 1984, incorporate all games (against rated opponents) played in the time between February 1, 1983 and January 31, 1984, along with the ratings that were already calculated as of January 31, 1983. 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, 1984. This represents the player's estimated strength on February 1, 1984.

+/- 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, 1984. The +/- value represents the standard deviation of that estimate; the player's true strength on February 1, 1984 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, 1984. 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, 1984. 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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