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Top 10 active players as of March 31, 1984


Top 500 active players as of March 31, 1984

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28225167.6% #220.96
2 Karpov, Anatoly E27684917.6% #532.86
3 Korchnoi, Viktor L2719493.1% #1553.02
4 Vaganian, Rafael A2698501.5% #2332.46
5 Beliavsky, Alexander G2697501.3% #2430.29
6 Portisch, Lajos2693491.1% #2546.98
7 Timman, Jan H2692470.9% #2532.30
8 Polugaevsky, Lev A2688510.9% #2849.36
9 Smyslov, Vassily V2679520.7% #3363.02
10 Dolmatov, Sergey V2679530.7% #3325.11
11 Ljubojevic, Ljubomir2678490.5% #3333.41
12 Andersson, Ulf2672480.4% #3632.76
13 Hübner, Robert2664500.3% #4235.40
14 Petrosian, Tigran V2659510.2% #4554.79
15 Ribli, Zoltán2658510.2% #4532.57
16 Spassky, Boris V2658490.2% #4547.17
17 Romanishin, Oleg M2655480.1% #4732.22
18 Miles, Anthony J2653480.1% #4928.93
19 Psakhis, Lev B2652490.1% #4925.34
20 Chernin, Alexander M2650570.3% #5424.07
21 Dorfman, Iosif D2649510.1% #5231.91
22 Eingorn, Viacheslav S2647560.2% #5727.35
23 Tal, Mikhail2647490.1% #5347.39
24 Gulko, Boris F2644540.2% #5837.14
25 Lputian, Smbat G2640530.1% #6126.13
26 Hort, Vlastimil2639490.1% #5940.22
27 Dvoiris, Semen I2638570.2% #6525.41
28 Kupreichik, Viktor D2632520.1% #6634.74
29 Larsen, Bent263151 #6649.07
30 Jussupow, Artur M262949 #6724.13
31 Nunn, John D M262449 #7228.93
32 Ftácnik, Lubomír262148 #7426.42
33 Sosonko, Gennadi262150 #7540.87
34 Ehlvest, Jaan2621580.1% #8021.46
35 Vyzmanavin, Alexey2620610.1% #8224.25
36 Balashov, Yury S262050 #7535.05
37 Sveshnikov, Evgeny E262051 #7734.14
38 Malaniuk, Vladimir P261952 #7826.69
39 Bronstein, David I2618580.1% #8260.12
40 Tseshkovsky, Vitaly V261850 #7839.52
41 Browne, Walter S261751 #7935.22
42 Agzamov, Georgy T261653 #8129.57
43 Kuzmin, Gennady P261554 #8238.20
44 Geller, Efim P261450 #8159.08
45 Chekhov, Valery A261351 #8328.34
46 Seirawan, Yasser261349 #8324.02
47 Nikolic, Predrag260950 #8523.55
48 Tukmakov, Vladimir B260550 #9138.04
49 Vaisser, Anatoli260254 #9635.07
50 Razuvaev, Yury S260251 #9438.47
51 Salov, Valery B2599660.1% #10719.85
52 Christiansen, Larry M259951 #9727.76
53 Kochiev, Alexander259855 #10128.02
54 Adorján, András259648 #9833.99
55 Vasiukov, Evgeny A259456 #10551.07
56 Kavalek, Lubomir259453 #10340.64
57 Yudasin, Leonid G259353 #10424.65
58 Gipslis, Aivars259158 #10947.15
59 Lerner, Konstantin Z259152 #10534.09
60 Gavrikov, Victor N259152 #10626.67
61 Parma, Bruno2588730.1% #12342.25
62 Yurtaev, Leonid258655 #11224.91
63 Dvoretsky, Mark I258665 #11936.31
64 Sax, Gyula258649 #11032.79
65 Timoshchenko, Gennady258459 #11734.92
66 Didishko, Vereslav258259 #11934.97
67 Kharitonov, Andrey Y258255 #11724.98
68 Zaichik, Gennady L258154 #11627.14
69 Smejkal, Jan258151 #11438.02
70 Vorotnikov, Vladislav V258060 #12236.62
71 Makarichev, Sergey Y257553 #12230.37
72 Gheorghiu, Florin257552 #12139.98
73 Rozentalis, Eduardas257461 #12920.84
74 Georgadze, Tamaz V257455 #12536.39
75 Knaak, Rainer F257250 #12331.04
76 Mikhalchishin, Adrian B257152 #12529.37
77 Azmaiparashvili, Zurab A257151 #12524.04
78 Gorelov, Sergey G257061 #13326.62
79 Kremenetsky, Anatoly M2568720.1% #14145.21
80 Petrosian, Arshak B256852 #12930.29
81 Byrne, Robert E256657 #13455.94
82 Averkin, Orest N2566730.1% #14440.10
83 Sokolov, Andrey Y256656 #13421.03
84 Podgaets, Mikhail Y256565 #14036.69
85 Torre, Eugenio256550 #13032.41
86 Panno, Oscar R256561 #13849.04
87 Pigusov, Evgeny256458 #13722.99
88 van der Wiel, John T H256449 #13124.64
89 Speelman, Jonathan S256350 #13227.50
90 Quinteros, Miguel A256252 #13436.26
91 Kurajica, Bojan256149 #13336.38
92 Rashkovsky, Nukhim N256154 #13737.95
93 Taimanov, Mark E256058 #14058.15
94 Ubilava, Elizbar E256053 #13833.59
95 Savon, Vladimir A255960 #14343.51
96 Mestel, A Jonathan255951 #13827.05
97 Korzubov, Peter255754 #14122.25
98 Bagirov, Vladimir K255651 #14047.62
99 Zilberman, Nathan R255363 #15043.91
100 Ivanovic, Božidar255250 #14337.60
101 Kovacevic, Vladimir255251 42.01
102 Anikaev, Yury255155 35.76
103 Kholmov, Ratmir D255055 58.88
104 Panchenko, Alexander N255052 30.49
105 Novikov, Igor A255061 21.86
106 Karlsson, Lars254850 28.72
107 Dzindzichashvili, Roman Y254456 39.90
108 Marjanovic, Slavoljub254450 29.23
109 Polovodin, Igor A254357 29.02
110 Reshevsky, Samuel H254360 72.35
111 Velimirovic, Dragoljub254351 41.88
112 Tarjan, James E254253 32.11
113 Guseinov, Aidyn254255 32.25
114 Faragó, Iván254249 37.99
115 Chandler, Murray G253949 23.98
116 Lombardy, William J253959 46.32
117 Short, Nigel D253750 18.83
118 Ivanov, Igor V253652 37.23
119 Zakharov, Alexander V253667 40.48
120 Vitolinš, Alvis253658 37.79
121 Veingold, Aleksander253661 30.47
122 Pintér, József253552 30.39
123 Stean, Michael F253557 30.57
124 Abramovic, Boško253450 33.13
125 Shamkovich, Leonid A253452 60.83
126 Gufeld, Eduard E253454 48.03
127 Suba, Mihai253350 36.83
128 Yermolinsky, Alex V253360 25.96
129 Csom, István253250 43.83
130 deFirmian, Nicholas E253150 26.68
131 Cebalo, Mišo253152 39.15
132 Barua, Dibyendu253059 17.43
133 Mokrý, Karel253052 25.15
134 Palatnik, Semen A252961 34.01
135 Thipsay, Praveen Mahadeo252859 24.63
136 Gligoric, Svetozar252850 61.16
137 Uhlmann, Wolfgang252850 49.01
138 Sturua, Zurab252759 24.81
139 Henley, Ron W252751 27.32
140 Popovic, Petar252654 25.13
141 Eolian, Levon S252672 24.54
142 Shneider, Aleksandr252657 21.86
143 Meduna, Eduard252449 33.55
144 Najdorf, Miguel252360 73.95
145 Osnos, Viacheslav V252062 48.69
146 Ivkov, Borislav252053 50.38
147 Ivanov, Alexander V251970 27.91
148 Oll, Lembit251956 17.93
149 Shereshevsky, Mikhail I251874 33.94
150 Liberzon, Vladimir M251858 47.02
151 Spraggett, Kevin B251760 29.39
152 Alburt, Lev O251751 38.61
153 Vogt, Lothar H251750 32.20
154 Ree, Hans251750 39.54
155 Cámpora, Daniel H251654 26.75
156 Unzicker, Wolfgang251554 58.76
157 Tseitlin, Mikhail S251558 36.79
158 Simic, Radoslav251456 35.81
159 Kengis, Edvins251455 24.96
160 Velikov, Petar251450 33.00
161 Pfleger, Helmut251453 40.65
162 Kudrin, Sergey251450 24.57
163 Mnatsakanian, Eduard A251360 45.32
164 Vladimirov, Evgeny Y251258 27.20
165 Groszpeter, Attila251152 23.81
166 Ostermeyer, Peter251154 40.47
167 Keene, Raymond251154
168 Andrianov, Nikolai251066 22.28
169 Klovans, Janis251056 48.97
170 Nikolic, Zivoslav251057 30.30
171 Lobron, Eric251049 23.90
172 Matanovic, Aleksandar251071 53.86
173 Spassov, Liuben250951 41.02
174 Tatai, Stefano250954 46.02
175 Grigorian, Karen A250859 36.57
176 Wedberg, Tom250751 30.35
177 Inkiov, Ventzislav250749 27.87
178 Gurevich, Mikhail N250662 25.11
179 Nikolac, Juraj250563 51.94
180 Suetin, Alexey S250458 57.37
181 Gruenfeld, Yehuda250456 28.09
182 Glek, Igor V250461 22.40
183 Hazai, Laszlo250453 30.80
184 Marovic, Dražen250373 46.21
185 Malich, Burkhard G250263 47.34
186 Franco Ocampos, Zenon250255 27.88
187 Lukacs, Peter250151 33.73
188 García Gonzáles, Guillermo250051 30.31
189 Gurgenidze, Bukhuti I250058 50.38
190 Hansen, Curt250051 19.54
191 Gurevich, Dmitry249951 27.55
192 Jamieson, Robert Murray249975
193 Bukic, Enver249860 46.33
194 Donchev, Dimitar I249853 25.69
195 Vukic, Milan249753 40.62
196 Hulak, Krunoslav249749 32.85
197 Agdestein, Simen249755 16.88
198 Chiburdanidze, Maia G249557 23.20
199 Espig, Lutz249551 35.24
200 Lein, Anatoly249552 53.01
201 Nemet, Ivan249463 40.96
202 Szabó, László249475 67.03
203 Kruppa, Yuri249467 19.78
204 Strauss, David J249473 37.65
205 Georgiev, Krum249351 25.85
206 Bikhovsky, Avigdor I249262 29.07
207 Nogueiras, Jesus249152 24.70
208 Petrushin, Alexander I249159 37.06
209 Lechtynsky, Jiri249151 36.35
210 Řgaard, Leif249155 32.24
211 Gutman, Lev249054 38.51
212 Bilek, István249061 51.64
213 Matulovic, Milan249054 48.81
214 Drasko, Milan248960 21.32
215 Lukin, Andrei M248959 35.59
216 Olafsson, Helgi248853 27.63
217 Biyiasas, Peter248871 33.37
218 Peters, John A248769 33.14
219 Díez del Corral, Jesús248766 50.98
220 Greenfeld, Alon248657 19.95
221 Stohl, Igor248655 19.51
222 Zapata, Alonso248552 25.61
223 Schussler, Harry248550 26.77
224 Schmidt, Wlodzimierz248549 40.97
225 Padevsky, Nikola B248563 50.84
226 Olafsson, Fridrik248460 49.18
227 Djuric, Stefan248453 28.68
228 Pachmann, Ludek248466 59.89
229 Sunye Neto, Jaime248352 26.91
230 Kindermann, Stefan248251 24.26
231 Soltis, Andrew E248263 36.84
232 Gruenberg, Hans Ulrich248253 28.23
233 Mednis, Edmar J248159 47.02
234 Ghinda, Mihail Viorel248156 34.68
235 Mortensen, Erling248150 28.98
236 Radulov, Ivan248050 45.23
237 Podzielny, Karl Heinz247959 29.56
238 Rodriguez, Amador247752 27.56
239 Rogulj, Branko247770 32.66
240 Tringov, Georgy P247754 47.07
241 Pribyl, Josef247751 36.47
242 Rukavina, Josip247755 41.34
243 Sigurjónsson, Gudmundur247552 36.52
244 Calvo Minguez, Ricardo247575 40.44
245 Tavadian, Ragik247462
246 Murey, Yakov247451 42.66
247 Benko, Pal C247462 55.71
248 Adamski, Jan247351 40.39
249 Antoshin, Vladimir S247370 54.88
250 Wolf, Volker247365 26.57
251 Schneider, Lars Ake247253
252 Todorcevic, Miodrag247271 43.39
253 Jansa, Vlastimil247149 41.34
254 Arnason, Jon L247151 23.38
255 Kogan, Boris247060
256 Bönsch, Uwe247051 25.46
257 Plachetka, Jan247049 39.12
258 Popov, Luben247057 48.18
259 Zaitsev, Igor A246957 45.84
260 Portisch, Ferenc246855 44.97
261 Van der Sterren, Paul246850 28.04
262 Hug, Werner246672 31.56
263 Duer, Arne246675 24.72
264 Kraidman, Yair246561 51.41
265 Bastian, Herbert246556 31.31
266 Mariotti, Sergio246463 37.64
267 Rajkovic, Dusan246452 41.79
268 Pétursson, Margeir246452 24.13
269 Prandstetter, Eduard246453 35.29
270 Stoica, Valentin246458 34.13
271 Klaric, Zlatko246364 27.44
272 Kaidanov, Gregory S246361 24.47
273 Shvidler, Eliahu246357 24.28
274 Bisguier, Arthur B246363 54.48
275 Martin, Andrew D246358 26.87
276 Szekely, Peter246255 29.15
277 Birnboim, Nathan246160 33.34
278 Fernandez Garcia, Jose Luis246059 29.91
279 Zaltsman, Vitaly F246057 42.43
280 Arbakov, Valentin245962 32.18
281 Robatsch, Karl245957 55.46
282 Spiridonov, Nikola245752 46.09
283 Kristiansen, Jens245752 31.85
284 Martz, William E245775
285 Pytel, Krzysztof245758 38.88
286 Vera, Reynaldo245652 23.23
287 Eslon, Jaan245666 32.07
288 Helmers, Knut J245655 27.15
289 Van Wijgerden, Cornelis245654 33.86
290 Danailov, Silvio245663 22.94
291 Gomez Baillo, Jorge H245669 24.94
292 Legky, Nikolay A245567 28.96
293 Rodriguez, Ruben245464 37.32
294 Barczay, Laszlo245455 48.11
295 Sharif, Mershad245375 31.72
296 Lazic, Miroljub245368 17.76
297 Nun, Jiri245361 26.68
298 Botterill, George Steven245374
299 Kirov Ivanov, Nino245352 38.56
300 Vokác, Marek245270 25.32
301 Hebden, Mark245252 26.13
302 Fedorowicz, John P245258 25.51
303 Mochalov, Evgeny V245269 32.42
304 Velickovic, Sasa245162 32.99
305 Sygulski, Artur245154 23.69
306 Hjartarson, Jóhann245152 21.15
307 Martinovic, Slobodan245153 38.68
308 Dizdar, Goran245054 25.32
309 Hamann, Svend245063 43.48
310 Hartston, William R244967 36.63
311 Taulbut, Shaun M244766 26.22
312 Renman, Nils Gustaf244771
313 Hebert, Jean244766 26.39
314 Forintos, Gyözö V244759 48.67
315 Lederman, Leon244669 36.85
316 Toth, Bela244653 40.94
317 Ost Hansen, Jacob244655
318 Ionov, Sergey244567 22.23
319 Sznapik, Aleksander244549 33.14
320 Wockenfuss, Klaus244459 32.59
321 Nei, Iivo244464 52.42
322 Karner, Hillar244461 48.68
323 Govedarica, Radovan244473 36.13
324 Hecht, Hans-Joachim244367 45.17
325 Plaskett, Jim244254 24.04
326 Szmetan, Jorge244167 33.85
327 Schweber, Samuel244169 47.71
328 Nurkic, Sahbaz243965 28.05
329 Levitina, Irina S243960 29.81
330 Lanka, Zigurds243861 23.86
331 Pekarek, Ales243872 22.29
332 Bischoff, Klaus243855 22.81
333 Knezevic, Milorad243850 47.42
334 Bjelajac, Milan243857 36.05
335 Ambroz, Jan243757 29.79
336 Zilberstein, Valery I243765 40.96
337 Rubinetti, Jorge A243765 38.99
338 Lalev, Dimitar243759 24.21
339 Commons, Kim S243672 32.69
340 Ardiansyah, Haji243654 32.32
341 Bronstein, Luis243668 37.83
342 Cifuentes Parada, Roberto243572 26.28
343 Cvitan, Ognjen243560 22.47
344 Tischbierek, Raj243553 21.52
345 Jakobsen, Ole243553 41.45
346 Giorgadze, Giorgi243565 19.47
347 Ligterink, Gert243452 34.37
348 Ernst, Thomas243465 23.62
349 Cvetkovic, Srdjan243458 38.09
350 Foisor, Ovidiu243456 24.98
351 Feustel, Bernd243464 29.53
352 Bass, Leonid243361 26.84
353 Cabrilo, Goran243353 25.75
354 Nun, Josef243360 50.69
355 Goehring, Karl Heinz243265
356 Donner, Johannes H243265 56.73
357 Raicevic, Vladimir243167 34.91
358 Gerusel, Mathias243175 46.15
359 Skembris, Spyridon243153 26.11
360 Palacios, Antonio243171 31.38
361 Yrjola, Jouni243162 24.44
362 Ghitescu, Theodor243068 50.19
363 Flear, Glenn C243068 25.13
364 Rivas Pastor, Manuel243053 23.72
365 Schneider, Attila243054 28.96
366 Wirthensohn, Heinz242957 32.91
367 Scheeren, Peter242857 28.67
368 Rodriguez Vargas, Orestes242771 40.74
369 Semkov, Semko242757 24.09
370 Benjamin, Joel L242759 20.05
371 Thorsteins, Karl242759 19.47
372 Hermann, Manfred242761 41.58
373 Trapl, Jindrich242772 42.02
374 Eng, Holger242765 23.09
375 Bellin, Robert242665 31.75
376 Kaiszauri, Konstanty242666 31.43
377 Ornstein, Axel242655 31.93
378 Qi Jingxuan242664 36.39
379 Garcia Palermo, Carlos242557 30.33
380 Loginov, Valery A242565 28.30
381 Lau, Ralf242468 24.45
382 Hase, Juan Carlos242467
383 Hernandez, Roman242351 34.36
384 Filipovic, Branko242363 26.48
385 Davies, Nigel R242263 23.67
386 Neckar, Lubomir242266 33.66
387 Wittmann, Walter242260 36.05
388 Gross, Stefan242165 34.59
389 Kagan, Shimon242159 41.98
390 Watson, John L242074 32.57
391 Frias, Victor J242057 28.14
392 Westerinen, Heikki MJ242051 39.92
393 Ciric, Dragoljub M241974 48.38
394 Sahovic, Dragutin241954 43.65
395 Doda, Zbigniew241965 53.11
396 Alexandria, Nana241969 34.47
397 Lukov, Valentin241953 28.30
398 Rantanen, Yrjo A241956 33.93
399 Makropoulos, Georgios241867 30.51
400 Ravikumar, Vaidyanathan241862 24.26
401 Tisdall, Jonathan D241855 25.60
402 Mascarinas, Rico241868 31.08
403 Barlov, Dragan241752 27.17
404 Bohm, Hans241753 34.21
405 Ochoa de Echaguen, F Javier241759 29.57
406 Dobrovolsky, Ladislav241756 33.27
407 Pliester, Leon241763 29.61
408 Brinck Claussen, Bjorn241755
409 Moskalenko, Viktor241667 23.32
410 Garcia Martinez, Silvino241651 39.74
411 Krnic, Zdenko241661 36.50
412 Bouaziz, Slim241655 33.95
413 Langeweg, Kick241653 47.07
414 Hausner, Ivan241660 31.95
415 Sisniega, Marcel241658 24.68
416 Littlewood, Paul E241560 28.20
417 Seppeur, Reinhold241465 28.63
418 McCambridge, Vincent241355 24.06
419 Ilic, Zoran241364 20.66
420 Shirazi, Kamran G241263 31.36
421 Bielczyk, Jacek241253 31.11
422 Haik, Aldo241262 31.45
423 Zahariev, Zahari241267 22.56
424 Morovic Fernández, Iván E241174 21.02
425 Maki, Veijo241158 25.32
426 Kelecevic, Nedeljko241162 37.05
427 Tompa, Janos241066 36.92
428 Kestler, Hans-Günter241066 44.30
429 Vilela, Jose Luis241052 31.03
430 Sideif Sade, Fikret I241063 32.25
431 Georgiev, Kiril240955 18.34
432 Handoko, Edhi240956 23.59
433 Bojkovic, Slobodan240967 38.68
434 Rakic, Tomislav240858 49.39
435 Hartoch, Robert G240866
436 Borm, Franciscus WM240761
437 Horvath, Tamas240652 32.44
438 Karpeshov, Oleg240667 30.15
439 Sher, Miron N240667 31.76
440 Gruen, Peter240658 27.21
441 Djukic, Zeljko240557 24.80
442 Lengyel, Levente240458 50.80
443 Reefschlaeger, Helmut240460 39.97
444 Tomaszewski, Roman240471 23.87
445 Kuligowski, Adam240455 28.27
446 Pritchett, Craig William240470
447 Zichichi, Alvise240358 45.74
448 Jacoby, Gisbert240368 40.91
449 Herzog, Adolf240368 30.82
450 Rogers, Ian240256 23.77
451 Banas, Jan240055 36.83
452 Petran, Pal239971 37.54
453 Grigorov, Jordan N239962 30.31
454 Bany, Jerzy239866 23.07
455 Kataev, Simcho239767
456 Lanc, Alois239754 36.12
457 Adianto, Utut239758 19.04
458 Trifunov, Dimitar239665 20.23
459 Stempin, Pawel239654 24.72
460 Szymczak, Zbigniew239651 32.24
461 Akesson, Ralf239662 23.15
462 Doncevic, Dario239463 26.22
463 Ermenkov, Evgenij239452 34.51
464 van Scheltinga, Tjeerd D239468 70.07
465 Heinbuch, Detlef239469 23.23
466 Peev, Peicho Chonev239470 43.99
467 Damjanovic, Mato239364 57.02
468 Filipowicz, Andrzej239367 45.88
469 Sydor, Andrzej239257 47.24
470 Tiller, Bjorn239157 25.21
471 Whitehead, Jay E239162 22.47
472 Knoppert, Erik GJ239173
473 Casper, Thomas239058 25.04
474 Gunawan, Ronny239058 24.08
475 Velez, Nestor239064 27.90
476 Fedder, Steen238961 32.80
477 Hodgson, Julian M238959 20.68
478 Bajovic, Milan238966
479 Danner, Georg238861 37.43
480 Cramling, Dan238758 25.15
481 Martin Gonzalez, Angel238768 31.24
482 Pedersen, Erik238756 25.55
483 Welin, Thomas238770 24.57
484 Segal, Alexandru Sorin238574 36.49
485 Kunsztowicz, Uwe238567 40.20
486 Santos, Luis238466 28.75
487 Majorovas, Vitalijus238469 22.98
488 Sibarevic, Milenko238365 39.05
489 Steinbacher, Matthias238368 32.54
490 Dlugy, Maxim238360 18.17
491 Staniszewski, Piotr238263 17.57
492 Gauglitz, Gernot238271 21.76
493 Moehring, Guenther238268 47.35
494 Kuijf, Marinus238257 24.13
495 Van Riemsdijk, Herman C238269 35.60
496 Borik, Otto238159 36.52
497 Nicevski, Risto238167 38.76
498 Parameswaran, Tiruchi N238065 28.38
499 McNab, Colin Anderson238066 23.16
500 Derikum, Axel238073 29.88

These ratings, calculated as of March 31, 1984, incorporate all games (against rated opponents) played in the time between April 1, 1983 and March 31, 1984, along with the ratings that were already calculated as of March 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 March 31, 1984. This represents the player's estimated strength on April 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 April 1, 1984. The +/- value represents the standard deviation of that estimate; the player's true strength on April 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 April 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 March 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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