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Top 10 active players as of April 30, 1988

  #  

Player Rating +/-
1 Karpov, Anatoly E279048
2 Kasparov, Garry K278349
3 Timman, Jan H272447
4 Beliavsky, Alexander G271649
5 Short, Nigel D270248
6 Portisch, Lajos269348
7 Tal, Mikhail269147
8 Ehlvest, Jaan267750
9 Jussupow, Artur M267649
10 Salov, Valery B267150

About these ratings

Top 500 active players as of April 30, 1988

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27904841.4% #336.93
2 Kasparov, Garry K27834936.2% #425.05
3 Timman, Jan H2724475.0% #1536.38
4 Beliavsky, Alexander G2716494.1% #1834.37
5 Short, Nigel D2702482.2% #2422.91
6 Portisch, Lajos2693481.3% #2951.07
7 Tal, Mikhail2691471.3% #3051.47
8 Ehlvest, Jaan2677501.0% #4025.54
9 Jussupow, Artur M2676490.7% #4028.21
10 Salov, Valery B2671500.6% #4523.92
11 Speelman, Jonathan S2671490.5% #4431.58
12 Khalifman, Alexander2667500.4% #4822.28
13 Tukmakov, Vladimir B2665490.3% #4942.12
14 Ribli, Zoltán2665500.4% #4936.65
15 Andersson, Ulf2663480.3% #5136.84
16 Gelfand, Boris2660520.4% #5619.85
17 Gavrikov, Victor N2659510.3% #5530.75
18 Korchnoi, Viktor L2656470.2% #5557.10
19 Ljubojevic, Ljubomir2654470.2% #5837.49
20 Gurevich, Mikhail N2654490.2% #5929.19
21 Spassky, Boris V2648510.2% #6551.25
22 Hübner, Robert2647490.1% #6539.48
23 Nikolic, Predrag2645480.1% #6727.64
24 Yudasin, Leonid G2645510.2% #6928.73
25 Vaganian, Rafael A2644480.1% #6836.54
26 Malaniuk, Vladimir P2643490.1% #6830.78
27 Seirawan, Yasser2641490.1% #7028.10
28 Psakhis, Lev B2639480.1% #7229.42
29 Azmaiparashvili, Zurab A2638530.2% #7628.12
30 Agdestein, Simen2638510.1% #7520.95
31 Nunn, John D M2638480.1% #7433.01
32 Ivanchuk, Vassily2637520.1% #7619.12
33 Gulko, Boris F2637490.1% #7641.22
34 Chernin, Alexander M2636480.1% #7628.15
35 Kharitonov, Andrey Y2633520.1% #8229.07
36 Hort, Vlastimil2632500.1% #8144.30
37 Sax, Gyula2632500.1% #8236.87
38 Lputian, Smbat G263049 #8230.21
39 Sokolov, Andrey Y262849 #8325.11
40 Chandler, Murray G262748 #8528.07
41 Romanishin, Oleg M262748 #8536.30
42 Dokhoian, Yury2626530.1% #8923.51
43 Dolmatov, Sergey V2625500.1% #8929.19
44 Georgiev, Kiril262449 #8822.42
45 Balashov, Yury S262149 #9339.13
46 Polugaevsky, Lev A261950 #9553.44
47 Smirin, Ilia261753 #10020.28
48 Hjartarson, Jóhann261749 #9625.23
49 Sveshnikov, Evgeny E261450 #10038.22
50 Smagin, Sergey261350 #10229.64
51 Larsen, Bent261052 #10653.15
52 Eingorn, Viacheslav S260850 #10831.43
53 Dorfman, Iosif D260852 #10935.99
54 Vyzmanavin, Alexey260751 #10928.33
55 Razuvaev, Yury S260550 #11042.55
56 Dreev, Alexey260354 #11519.28
57 Smyslov, Vassily V260352 #11367.10
58 Lerner, Konstantin Z260051 #11738.17
59 Torre, Eugenio260050 #11736.49
60 Bareev, Evgeny260050 #11721.44
61 Pintér, József260051 #11834.47
62 Pigusov, Evgeny260050 #11727.08
63 Anand, Viswanathan259752 #12018.39
64 Ftácnik, Lubomír259650 #12030.50
65 Tseshkovsky, Vitaly V259650 #12143.60
66 Kruppa, Yuri259659 #12723.86
67 Vaisser, Anatoli259552 #12339.15
68 Dvoiris, Semen I259559 #12829.49
69 Goldin, Alexander259555 #12523.18
70 Yurtaev, Leonid259557 #12628.99
71 Rozentalis, Eduardas259552 #12324.92
72 Huzman, Alexander259352 #12526.05
73 Kuzmin, Gennady P259253 #12842.28
74 Christiansen, Larry M259049 #12631.84
75 Neverov, Valery258957 #13423.86
76 Miles, Anthony J258849 #12833.02
77 Ubilava, Elizbar E258754 #13337.68
78 Krasenkow, Michal258656 #13524.46
79 van der Wiel, John T H258549 #13128.72
80 Murey, Yakov258552 #13446.74
81 Vladimirov, Evgeny Y258456 #13731.28
82 Gorelov, Sergey G258359 #14130.70
83 Panchenko, Alexander N258352 #13634.57
84 Rashkovsky, Nukhim N258351 #13542.03
85 Mikhalchishin, Adrian B258150 #13733.45
86 Kaidanov, Gregory S258150 #13728.55
87 Kavalek, Lubomir257955 #14244.72
88 Naumkin, Igor257953 #14122.72
89 Podgaets, Mikhail Y257964 #14840.77
90 Novikov, Igor A257850 #13925.93
91 Popovic, Petar257850 #14029.21
92 Arkhipov, Sergey257855 #14433.85
93 Makarichev, Sergey Y257856 #14434.45
94 Timoshchenko, Gennady257851 #14039.01
95 Greenfeld, Alon257453 #14524.04
96 Benjamin, Joel L257449 #14324.14
97 Glek, Igor V257365 #15426.48
98 Oll, Lembit257351 #14522.02
99 Karlsson, Lars257351 #14632.80
100 Nogueiras, Jesus257249 #14628.79
101 Vasiukov, Evgeny A257156 55.15
102 Kochiev, Alexander257055 32.10
103 Darga, Klaus V257072 54.18
104 Zaichik, Gennady L256950 31.22
105 Chekhov, Valery A256951 32.43
106 Bronstein, David I256967 64.20
107 Suba, Mihai256750 40.91
108 Cámpora, Daniel H256452 30.83
109 Pétursson, Margeir256449 28.21
110 Gufeld, Eduard E256461 52.11
111 Shabanov, Yury F256362 50.47
112 Epishin, Vladimir256354 22.80
113 Bönsch, Uwe256349 29.54
114 Knaak, Rainer F256150 35.12
115 Kholmov, Ratmir D256157 62.96
116 Adorján, András256050 38.08
117 Didishko, Vereslav256066 39.05
118 Dautov, Rustem256063 22.42
119 Morovic Fernández, Iván E255958 25.10
120 Shereshevsky, Mikhail I255973 38.03
121 Vorotnikov, Vladislav V255875 40.70
122 Yermolinsky, Alex V255753 30.05
123 Sosonko, Gennadi255652 44.94
124 Moskalenko, Viktor255656 27.40
125 Spraggett, Kevin B255652 33.47
126 Csom, István255551 47.91
127 Franco Ocampos, Zenon255359 31.96
128 Kindermann, Stefan255248 28.34
129 Fedorowicz, John P255250 29.59
130 Kudrin, Sergey255250 28.65
131 Dlugy, Maxim255250 22.25
132 Yakovich, Yuri255254 25.42
133 Kupreichik, Viktor D255250 38.82
134 Chiburdanidze, Maia G255153 27.29
135 Soppe, Guillermo255164 27.62
136 Kengis, Edvins255053 29.05
137 Hansen, Curt255050 23.62
138 Velimirovic, Dragoljub255051 45.96
139 Serper, Grigory254954 18.63
140 deFirmian, Nicholas E254850 30.76
141 Lobron, Eric254850 27.97
142 Wedberg, Tom254753 34.43
143 Najdorf, Miguel254764 78.04
144 Janjgava, Lasha254753 17.98
145 Marjanovic, Slavoljub254750 33.32
146 Reshevsky, Samuel H254672 76.43
147 Sorokin, Maxim254658 20.27
148 Cebalo, Mišo254551 43.23
149 Ivanov, Alexander V254566 31.99
150 Rodriguez, Amador254550 31.64
151 Uhlmann, Wolfgang254552 53.09
152 Kuzmin, Alexey254458 25.14
153 Sokolov, Ivan254453 19.88
154 Gligoric, Svetozar254454 65.24
155 Kveinys, Aloyzas254361 25.81
156 Bagirov, Vladimir K254254 51.71
157 Ivanov, Igor V254254 41.31
158 Gaprindashvili, Nona254258 46.98
159 Dzindzichashvili, Roman Y254256 43.98
160 Olafsson, Helgi254250 31.71
161 Henley, Ron W254271 31.40
162 Savon, Vladimir A254166 47.59
163 Arnason, Jon L254150 27.46
164 Taimanov, Mark E254170 62.23
165 Cvitan, Ognjen254151 26.55
166 Quinteros, Miguel A254155 40.34
167 Hulak, Krunoslav254051 36.92
168 Graf, Alexander254057 25.68
169 Smejkal, Jan254050 42.11
170 Rogers, Ian254050 27.85
171 Gheorghiu, Florin254051 44.07
172 Panno, Oscar R253957 53.12
173 Ulibin, Mikhail253858 16.91
174 Aseev, Konstantin N253759 27.53
175 Kurajica, Bojan253759 40.46
176 Byrne, Robert E253661 60.03
177 Sturua, Zurab253575 28.89
178 Ekstroem, Roland253562 31.93
179 Mainka, Romuald253558 24.95
180 Browne, Walter S253450 39.30
181 Gipslis, Aivars253354 51.23
182 Ivanovic, Božidar253252 41.68
183 Lalic, Bogdan253152 24.14
184 Shneider, Aleksandr253159 25.93
185 Groszpeter, Attila253052 27.89
186 Geller, Efim P252950 63.16
187 Palatnik, Semen A252956 38.09
188 Ruban, Vadim252959 23.88
189 Adianto, Utut252960 23.12
190 García Gonzáles, Guillermo252850 34.39
191 Gruenfeld, Yehuda252652 32.17
192 Barbero, Gerardo F252557 26.69
193 Lanka, Zigurds252560 27.94
194 Nemet, Ivan252563 45.04
195 Antunes, Antonio252473 26.23
196 Mestel, A Jonathan252454 31.13
197 Ostermeyer, Peter252463 44.55
198 Bischoff, Klaus252350 26.89
199 Liberzon, Vladimir M252162 51.10
200 Inkiov, Ventzislav252151 31.94
201 Ninov, Kiril252157 19.56
202 Root, Douglas252071 25.22
203 Mokrý, Karel251950 29.23
204 Barua, Dibyendu251954 21.51
205 Guseinov, Aidyn251864 36.33
206 Vitolinš, Alvis251760 41.87
207 Alburt, Lev O251652 42.69
208 Marin, Mihail251657 23.03
209 Barlov, Dragan251550 31.25
210 Foisor, Ovidiu251551 29.07
211 Garcia Palermo, Carlos251550 34.41
212 Seret, Jean Luc251463
213 Tischbierek, Raj251450 25.60
214 Petrienko, Vladimir251364 33.14
215 Todorcevic, Miodrag251353 47.47
216 Veingold, Aleksander251365 34.55
217 Magerramov, Elmar S251365 30.05
218 Adams, Michael251258 16.45
219 McKay, Roderick M251272 36.22
220 London, Dimitri251272 25.44
221 King, Daniel J251251 24.67
222 Watson, William N251251 26.03
223 Illescas Cordoba, Miguel251154 22.41
224 Nikolac, Juraj251161 56.02
225 Sahovic, Dragutin251160 47.73
226 Simic, Radoslav251159 39.89
227 Loginov, Valery A251154 32.38
228 Donchev, Dimitar I251157 29.78
229 Ionov, Sergey250970 26.31
230 Rohde, Michael A250851 28.68
231 Sherbakov, Vitaly S250872 32.86
232 Plaskett, Jim250753 28.12
233 Lukacs, Peter250749 37.81
234 Stoica, Valentin250757 38.21
235 Meduna, Eduard250651 37.64
236 Cifuentes Parada, Roberto250654 30.36
237 Kalinitschew, Sergey250664 32.24
238 Kovacevic, Vladimir250656 46.09
239 Sunye Neto, Jaime250555 30.99
240 Andrianov, Nikolai250573 26.36
241 Pfleger, Helmut250462 44.73
242 Lau, Ralf250450 28.53
243 Vogt, Lothar H250350 36.29
244 Hodgson, Julian M250350 24.76
245 Hickl, Joerg250351 23.04
246 Ghinda, Mihail Viorel250353 38.76
247 Antoshin, Vladimir S250276 58.95
248 Kantsler, Boris250057 26.04
249 Georgadze, Tamaz V249960 40.47
250 Georgiev, Krum249954 29.93
251 Zagrebelny, Sergey249863
252 Xu Jun249853 25.62
253 Espig, Lutz249855 39.32
254 Granda Zuńiga, Julio E249850 21.18
255 Hebden, Mark249752 30.21
256 Klaric, Zlatko249761 31.52
257 Velikov, Petar249754 37.08
258 Faragó, Iván249748 42.08
259 Piket, Jeroen249652 19.26
260 Shamkovich, Leonid A249660 64.91
261 Petrosian, Arshak B249654 34.37
262 Govedarica, Radovan249666 40.21
263 Rajkovic, Dusan249654 45.87
264 Basin, Leonid249561 30.44
265 Efimov, Igor249463 27.62
266 Rukavina, Josip249463 45.42
267 Tringov, Georgy P249360 51.15
268 Frias, Victor J249258 32.22
269 Fernandez Garcia, Jose Luis249259 33.98
270 Murshed, Niaz249261 21.96
271 Vukic, Milan249174 44.70
272 Andres Mendez, Miguel249064
273 Mnatsakanian, Eduard A249072 49.40
274 Schussler, Harry249055 30.85
275 Raicevic, Momcilo249065
276 Schneider, Lars Ake248956
277 Abramovic, Boško248952 37.21
278 Vera, Reynaldo248854 27.31
279 Jansa, Vlastimil248750 45.43
280 Reeh, Oliver248762 24.28
281 Barbulescu, Dan248757 23.85
282 Renet, Olivier248752 23.36
283 Petrushin, Alexander I248775 41.14
284 Hellers, Ferdinand248754 19.26
285 Filipovic, Branko248763 30.57
286 Unzicker, Wolfgang248659 62.84
287 Hazai, Laszlo248651 34.88
288 Ernst, Thomas248551 27.70
289 Karpman, Vadim248562 22.96
290 Damljanovic, Branko248553 26.87
291 Khasin, Alexander248464 37.00
292 Belov, Igor248463
293 Van der Sterren, Paul248450 32.12
294 Mochalov, Evgeny V248368 36.50
295 Stohl, Igor248352 23.59
296 Gurgenidze, Bukhuti I248260 54.46
297 Rodriguez Vargas, Orestes248259 44.82
298 Vokác, Marek248254 29.40
299 Flear, Glenn C248250 29.22
300 Wilder, Michael248253 25.62
301 Petkevich, Jusefs248173 47.36
302 Wolf, Volker248164 30.65
303 Savchenko, Stanislav248168 21.28
304 Skembris, Spyridon248158 30.19
305 Zapata, Alonso248150 29.69
306 Tisdall, Jonathan D248052 29.68
307 Lein, Anatoly248054 57.09
308 Nun, Josef248067 54.77
309 Klovans, Janis248062 53.06
310 Valkesalmi, Kimmo247954 26.99
311 Rivas Pastor, Manuel247955 27.80
312 Drasko, Milan247953 25.40
313 Szekely, Peter247858 33.23
314 Portisch, Ferenc247870 49.06
315 Dizdar, Goran247851 29.40
316 Ionescu, Constantin247853 29.63
317 Pekarek, Ales247752 26.37
318 Popchev, Milko247752 23.47
319 Yrjola, Jouni247751 28.52
320 Pytel, Krzysztof247667 42.95
321 Gomez Baillo, Jorge H247660 29.03
322 Gutman, Lev247651 42.59
323 Akhmilovskaya, Elena247565
324 Lukin, Andrei M247571 39.67
325 Ornstein, Axel247558 36.02
326 Eslon, Jaan247468 36.15
327 Davies, Nigel R247450 27.75
328 Ivkov, Borislav247356 54.47
329 Horvath, Jozsef247352 23.71
330 Thorhallsson, Throstur247358 19.11
331 Mortensen, Erling247354 33.07
332 Sznapik, Aleksander247352 37.22
333 Zaitsev, Igor A247265 49.92
334 Polgar, Zsuzsa247250 19.03
335 Lechtynsky, Jiri247252 40.43
336 Helmers, Knut J247269 31.23
337 Gabdrakhmanov, Rafail247275 28.90
338 Reyes, Juan247172 25.01
339 Staniszewski, Piotr247153 21.65
340 Hecht, Hans-Joachim247060 49.25
341 Piasetski, Leon David247072
342 Lombardy, William J247063 50.40
343 Ermenkov, Evgenij246954 38.59
344 Schmidt, Wlodzimierz246950 45.05
345 Kotronias, Vasilios246853 23.68
346 Milos, Gilberto246853 24.50
347 Řgaard, Leif246863 36.32
348 Shabalov, Alexander246754 20.63
349 Tseitlin, Mikhail S246769 40.87
350 Mednis, Edmar J246759 51.11
351 Keitlinghaus, Ludger246757 22.77
352 Nun, Jiri246755 30.76
353 Pribyl, Josef246655 40.55
354 Ree, Hans246556 43.62
355 Kamsky, Gata246567 13.91
356 Gurevich, Dmitry246551 31.64
357 Li Zunian246564 30.31
358 Cabrilo, Goran246557 29.83
359 Kogan, Boris246457
360 Khenkin, Igor246363 20.11
361 Matulovic, Milan246358 52.89
362 Garcia, Gildardo246356 34.14
363 Timoshenko, Georgy246276 21.91
364 Rubinetti, Jorge A246160 43.08
365 Verduga, Denis Homero246058
366 Gruenberg, Hans Ulrich246055 32.31
367 Hawelko, Marek246052 28.72
368 Ambroz, Jan246062 33.87
369 Polasek, Jaroslav246063 31.08
370 Sideif Sade, Fikret I246061 36.33
371 Levin, Felix246066 29.48
372 Yap, Andronico245963
373 Dizdarevic, Emir245955 30.08
374 Mohr, Stefan245962 20.52
375 Djuric, Stefan245852 32.76
376 Pedersen, Erik245870 29.64
377 Klundt, Klaus245864 46.35
378 Renman, Nils Gustaf245761
379 Veinger, Itzhak245760 49.82
380 Marangunic, Srdjan245666 44.50
381 Klinger, Josef245652 20.90
382 Sigurjónsson, Gudmundur245561 40.60
383 Winants, Luc245551 25.33
384 Ardiansyah, Haji245566 36.40
385 Knezevic, Milorad245551 51.50
386 Popov, Luben245574 52.26
387 Malisauskas, Vidmantas245354 24.74
388 Motwani, Paul245361 25.88
389 Kolev, Atanas245273 20.79
390 Mencinger, Vojko245266 30.07
391 Shtyrenkov, Veniamen245174 30.02
392 Makropoulos, Georgios245166 34.59
393 Ostojic, Predrag245175 50.19
394 Leski, Marc245067 26.85
395 Neckar, Lubomir245063 37.74
396 Braga, Fernando244958 29.81
397 Piesina, Gintautas244962 36.06
398 Meyer, E.244976
399 Gostisa, Leon244968 27.08
400 Plachetka, Jan244950 43.20
401 Kallai, Gabor244862 29.19
402 Kouatly, Bachar244750 30.16
403 Wolff, Patrick G244755 20.21
404 Fokin, Sergey244664 32.54
405 Tempone, Marcelo244660 25.65
406 Hamann, Svend244670 47.56
407 Prandstetter, Eduard244652 39.37
408 Schmittdiel, Eckhard244556 27.96
409 Horvath, Tamas244558 36.52
410 Kuczynski, Robert244552 22.04
411 Nijboer, Friso244560 22.92
412 Martinovic, Slobodan244359 42.76
413 Kraidman, Yair244372 55.50
414 Lalev, Dimitar244362 28.29
415 Jelen, Iztok244369 41.28
416 Wittmann, Walter244260 40.13
417 Radulov, Ivan244258 49.31
418 Nikolic, Zivoslav244255 34.38
419 Cramling, Dan244259 29.23
420 Magomedov, Magaram244267 21.94
421 Rachels, Stuart244168 18.59
422 Negulescu, Adrian244160 26.89
423 Karolyi, Tibor Jr244152 26.46
424 Spiridonov, Nikola244158 50.17
425 Schulte, Oliver244162 19.36
426 Spassov, Liuben244057 45.11
427 Semeniuk, Alexander A244065 35.64
428 Kurtenkov, Atanas244071 24.74
429 Lanc, Alois244052 40.20
430 Lukov, Valentin244059 32.39
431 Blatny, Pavel243952 19.86
432 Kosten, Anthony C243952 29.77
433 Bukal, Vladimir Sr243956 48.50
434 Toshkov, Tihomir243955 28.44
435 Reefschlaeger, Helmut243864 44.06
436 Sonntag, Hans Hubert243862
437 Benko, Pal C243864 59.79
438 Ligterink, Gert243853 38.45
439 Pieterse, Gert243860 26.20
440 Dzuban, Oleg I243874
441 Orso, Miklos243770 31.89
442 Thorsteins, Karl243752 23.55
443 Gleizerov, Evgeny243762 25.11
444 Luther, Thomas243756 18.49
445 Akesson, Ralf243759 27.23
446 Rechlis, Gad243655 21.23
447 Wockenfuss, Klaus243659 36.67
448 Saltaev, Mihail243661 25.45
449 Kirov Ivanov, Nino243654 42.64
450 Sherzer, Alex243657 17.25
451 Ye Jiangchuan243571 27.44
452 Lendwai, Reinhard243568 21.55
453 Wirthensohn, Heinz243559 36.98
454 Ochoa de Echaguen, F Javier243561 33.65
455 Piskov, Yury243564 26.55
456 Semkov, Semko243558 28.17
457 Ricardi, Pablo243454 26.18
458 Ziatdinov, Raset243462 29.34
459 Casper, Thomas243453 29.12
460 Birnboim, Nathan243355 37.43
461 Handoko, Edhi243367 27.67
462 Jakobsen, Ole243364 45.53
463 Bielczyk, Jacek243359 35.19
464 Hertneck, Gerald243353 24.62
465 Grivas, Efstratios243266 22.08
466 Liang Jinrong243261 27.94
467 Qi Jingxuan243266 40.47
468 Litvinov, Vladimir243169 46.79
469 Ghitescu, Theodor243161 54.27
470 Krnic, Zdenko243165 40.58
471 Lengyel, Levente243170 54.88
472 Temirbaev, Serik243164
473 Kuligowski, Adam243157 32.35
474 Litinskaya, Marta I243075 39.10
475 Trapl, Jindrich243060 46.10
476 Bisguier, Arthur B243066 58.56
477 Sellos, Didier242969 31.19
478 Mariotti, Sergio242971 41.72
479 Arkell, Keith C242964 27.31
480 Hausner, Ivan242957 36.04
481 Bonin, Jay R242968 32.81
482 Sisniega, Marcel242860 28.76
483 Wiedenkeller, Michael242854 25.30
484 Szmetan, Jorge242856 37.92
485 Maksimovic, Branimir242858 32.71
486 Forintos, Gyözö V242766 52.75
487 Norwood, David242759 19.57
488 Schneider, Attila242760 33.04
489 Robatsch, Karl242755 59.54
490 Rigo, Janos242660 39.51
491 Graf, Juergen242664 25.08
492 Tolnai, Tibor242654 23.60
493 Paehtz, Thomas Sr242653 31.65
494 Wahls, Matthias242554 20.26
495 Gruenenwald, Joerg242566 22.90
496 Nowak, Ignacy242557 39.30
497 Bohm, Hans242572 38.29
498 Vallifuoco, Giacomo242575 30.98
499 Bilek, István242564 55.72
500 Sharif, Mershad242555 35.80

These ratings, calculated as of April 30, 1988, incorporate all games (against rated opponents) played in the time between May 1, 1987 and April 30, 1988, along with the ratings that were already calculated as of April 30, 1987. 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 April 30, 1988. This represents the player's estimated strength on May 1, 1988.

+/- 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 May 1, 1988. The +/- value represents the standard deviation of that estimate; the player's true strength on May 1, 1988 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 May 1, 1988. 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 April 30, 1988. 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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