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Top 10 active players as of September 30, 1988

  #  

Player Rating +/-
1 Kasparov, Garry K280948
2 Karpov, Anatoly E279847
3 Beliavsky, Alexander G270048
4 Timman, Jan H269747
5 Tal, Mikhail268748
6 Short, Nigel D268547
7 Salov, Valery B267750
8 Gelfand, Boris267651
9 Speelman, Jonathan S267349
10 Jussupow, Artur M267048

About these ratings

Top 500 active players as of September 30, 1988

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28094851.3% #225.46
2 Karpov, Anatoly E27984739.1% #337.35
3 Beliavsky, Alexander G2700481.2% #2634.79
4 Timman, Jan H2697471.0% #2736.79
5 Tal, Mikhail2687480.6% #3351.89
6 Short, Nigel D2685470.6% #3523.33
7 Salov, Valery B2677500.5% #4024.34
8 Gelfand, Boris2676510.6% #4220.27
9 Speelman, Jonathan S2673490.4% #4331.99
10 Jussupow, Artur M2670480.3% #4528.63
11 Khalifman, Alexander2669490.3% #4722.70
12 Portisch, Lajos2667480.2% #4751.49
13 Korchnoi, Viktor L2667470.2% #4757.52
14 Lputian, Smbat G2665480.2% #4930.63
15 Andersson, Ulf2665480.2% #5037.26
16 Ivanchuk, Vassily2664500.2% #5019.53
17 Ribli, Zoltán2664500.3% #5037.06
18 Tukmakov, Vladimir B2664490.2% #5042.54
19 Spassky, Boris V2659500.2% #5451.67
20 Agdestein, Simen2657510.2% #5721.37
21 Yudasin, Leonid G2657500.2% #5729.14
22 Chernin, Alexander M2656490.1% #5628.56
23 Ehlvest, Jaan2654490.1% #5825.95
24 Psakhis, Lev B2653470.1% #5929.84
25 Ljubojevic, Ljubomir2652470.1% #5937.91
26 Hübner, Robert2648480.1% #6439.90
27 Vaganian, Rafael A2645480.1% #6836.95
28 Nunn, John D M2644490.1% #6833.43
29 Gavrikov, Victor N264349 #6931.17
30 Nikolic, Predrag264048 #7228.05
31 Seirawan, Yasser263849 #7328.52
32 Azmaiparashvili, Zurab A2635530.1% #7928.54
33 Gulko, Boris F263449 #7841.64
34 Eingorn, Viacheslav S263350 #8031.85
35 Sokolov, Andrey Y263349 #7925.53
36 Malaniuk, Vladimir P263348 #7931.19
37 Larsen, Bent263151 #8253.57
38 Polugaevsky, Lev A263050 #8453.86
39 Smagin, Sergey262949 #8230.06
40 Chandler, Murray G262848 #8428.49
41 Romanishin, Oleg M262748 #8436.72
42 Dvoiris, Semen I2626570.1% #9229.91
43 Sax, Gyula262550 #8837.28
44 Dolmatov, Sergey V262350 #9029.61
45 Gurevich, Mikhail N262049 #9229.61
46 Yurtaev, Leonid262054 #9729.41
47 Vladimirov, Evgeny Y261853 #9831.69
48 Georgiev, Kiril261849 #9422.84
49 Hort, Vlastimil261850 #9644.72
50 Dokhoian, Yury261651 #9823.92
51 Dautov, Rustem261654 #10122.84
52 Dreev, Alexey261351 #10219.69
53 Torre, Eugenio261250 #10236.90
54 Smyslov, Vassily V261251 #10367.52
55 Hjartarson, Jóhann261248 #10125.64
56 Razuvaev, Yury S261050 #10542.96
57 Balashov, Yury S260849 #10639.55
58 Tseshkovsky, Vitaly V260650 #10944.01
59 Miles, Anthony J260450 #11133.44
60 Kharitonov, Andrey Y260449 #11129.49
61 Rozentalis, Eduardas260352 #11425.34
62 Vyzmanavin, Alexey259952 #11828.74
63 Smirin, Ilia259952 #11720.69
64 Sveshnikov, Evgeny E259851 #11938.63
65 Pigusov, Evgeny259750 #11927.50
66 Kuzmin, Gennady P259753 #12142.70
67 Dorfman, Iosif D259750 #12036.41
68 Lerner, Konstantin Z259652 #12138.59
69 Naumkin, Igor259454 #12523.14
70 Christiansen, Larry M259249 #12332.26
71 Aseev, Konstantin N259255 #12827.94
72 Kholmov, Ratmir D259054 #13063.38
73 Rashkovsky, Nukhim N258950 #12742.45
74 Bareev, Evgeny258950 #12721.86
75 Ubilava, Elizbar E258854 #13038.09
76 Murey, Yakov258752 #13247.16
77 Kruppa, Yuri258655 #13424.27
78 Ionov, Sergey2586710.1% #14526.73
79 Krasenkow, Michal258655 #13524.88
80 Chekhov, Valery A258350 #13432.84
81 Gorelov, Sergey G258259 #14031.12
82 Yermolinsky, Alex V258251 #13530.47
83 Epishin, Vladimir258253 #13723.22
84 Kavalek, Lubomir258057 #14145.14
85 Sokolov, Ivan258052 #13820.30
86 Popovic, Petar258050 #13729.63
87 Huzman, Alexander257952 #14026.47
88 Panchenko, Alexander N257853 #14134.98
89 Anand, Viswanathan257853 #14218.80
90 Dlugy, Maxim257750 #13922.67
91 Benjamin, Joel L257749 #14024.55
92 Kaidanov, Gregory S257750 #14028.96
93 Nogueiras, Jesus257648 #13929.20
94 Goldin, Alexander257654 #14423.59
95 Arkhipov, Sergey257657 #14534.27
96 Vaisser, Anatoli257651 #14239.57
97 Timoshchenko, Gennady257650 #14139.42
98 Ftácnik, Lubomír257550 #14230.91
99 Podgaets, Mikhail Y257464 #15241.19
100 Oll, Lembit257451 #14422.44
101 Pintér, József257351 34.89
102 Lobron, Eric257150 28.40
103 Mikhalchishin, Adrian B257150 33.87
104 Kupreichik, Viktor D257049 39.24
105 van der Wiel, John T H257048 29.14
106 Sosonko, Gennadi256851 45.37
107 Vasiukov, Evgeny A256757 55.57
108 Darga, Klaus V256672 54.60
109 Savon, Vladimir A256671 48.01
110 Shereshevsky, Mikhail I256571 38.44
111 Dzindzichashvili, Roman Y256455 44.40
112 Makarichev, Sergey Y256355 34.87
113 Greenfeld, Alon256353 24.45
114 Kuzmin, Alexey256156 25.56
115 Adorján, András256150 38.50
116 Neverov, Valery256053 24.27
117 Franco Ocampos, Zenon255859 32.38
118 Karlsson, Lars255750 33.22
119 Arnason, Jon L255650 27.88
120 Hansen, Curt255650 24.03
121 Kochiev, Alexander255455 32.51
122 Novikov, Igor A255349 26.35
123 Zaichik, Gennady L255350 31.63
124 Csom, István255352 48.33
125 Soppe, Guillermo255365 28.04
126 Todorcevic, Miodrag255354 47.89
127 Didishko, Vereslav255265 39.47
128 Velimirovic, Dragoljub255152 46.38
129 Mokrý, Karel255151 29.65
130 Najdorf, Miguel255164 78.46
131 Quinteros, Miguel A255057 40.76
132 Shabanov, Yury F255062 50.88
133 Janjgava, Lasha255053 18.40
134 Yakovich, Yuri254954 25.83
135 Basin, Leonid254657 30.85
136 Glek, Igor V254656 26.90
137 Hellers, Ferdinand254552 19.67
138 Fedorowicz, John P254550 30.01
139 Kindermann, Stefan254548 28.76
140 Bagirov, Vladimir K254556 52.12
141 Liberzon, Vladimir M254563 51.52
142 Reshevsky, Samuel H254571 76.84
143 Olafsson, Helgi254449 32.12
144 Taimanov, Mark E254474 62.65
145 Hulak, Krunoslav254452 37.35
146 Ivanov, Alexander V254363 32.41
147 Uhlmann, Wolfgang254351 53.50
148 Suba, Mihai254351 41.33
149 Spraggett, Kevin B254353 33.89
150 Cebalo, Mišo254251 43.65
151 Morovic Fernández, Iván E254256 25.52
152 Marjanovic, Slavoljub254250 33.73
153 Groszpeter, Attila254252 28.31
154 Sorokin, Maxim254158 20.69
155 Adams, Michael254156 16.87
156 Browne, Walter S254051 39.72
157 Ulibin, Mikhail254058 17.33
158 deFirmian, Nicholas E254051 31.18
159 García Gonzáles, Guillermo254052 34.81
160 Panno, Oscar R253957 53.54
161 Gipslis, Aivars253956 51.64
162 Lanka, Zigurds253960 28.36
163 Gaprindashvili, Nona253957 47.41
164 Wedberg, Tom253852 34.84
165 Kudrin, Sergey253850 29.06
166 Kiselev, Sergey253857 27.04
167 Kurajica, Bojan253760 40.87
168 Chiburdanidze, Maia G253751 27.70
169 Lalic, Bogdan253651 24.56
170 Adianto, Utut253663 23.54
171 Cámpora, Daniel H253652 31.25
172 Ekstroem, Roland253559 32.36
173 Bönsch, Uwe253550 29.95
174 Smejkal, Jan253451 42.52
175 Gligoric, Svetozar253455 65.66
176 Rogers, Ian253350 28.27
177 Kengis, Edvins253255 29.47
178 Bischoff, Klaus253251 27.31
179 Gufeld, Eduard E253258 52.53
180 Pétursson, Margeir253149 28.62
181 Gheorghiu, Florin253152 44.48
182 Guseinov, Aidyn253164 36.74
183 Ivanovic, Božidar253051 42.10
184 Moskalenko, Viktor253055 27.82
185 Mestel, A Jonathan253053 31.55
186 Barua, Dibyendu252955 21.92
187 Donchev, Dimitar I252956 30.19
188 Palatnik, Semen A252958 38.51
189 Cvitan, Ognjen252751 26.96
190 Antunes, Antonio252673 26.65
191 Mochalov, Evgeny V252567 36.91
192 Simic, Radoslav252559 40.31
193 Kveinys, Aloyzas252461 26.22
194 Knaak, Rainer F252449 35.54
195 Sturua, Zurab252376 29.31
196 Shneider, Aleksandr252258 26.36
197 Nemet, Ivan252260 45.46
198 Ivanov, Igor V252155 41.73
199 Graf, Alexander252154 26.10
200 Schussler, Harry252054 31.27
201 Illescas Cordoba, Miguel252055 22.82
202 Rohde, Michael A251952 29.09
203 Nikolac, Juraj251962 56.44
204 Serper, Grigory251852 19.04
205 Pfleger, Helmut251759 45.15
206 Govedarica, Radovan251768 40.63
207 Inkiov, Ventzislav251751 32.36
208 Gruenfeld, Yehuda251653 32.59
209 Ostermeyer, Peter251666 44.96
210 Geller, Efim P251651 63.58
211 Sahovic, Dragutin251660 48.14
212 Vitolinš, Alvis251661 42.29
213 Byrne, Robert E251661 60.44
214 Watson, William N251549 26.45
215 Vogt, Lothar H251450 36.70
216 Kantsler, Boris251458 26.45
217 Mohr, Stefan251454 20.93
218 Seret, Jean Luc251364
219 Petrienko, Vladimir251369 33.56
220 King, Daniel J251351 25.09
221 Veingold, Aleksander251265 34.96
222 Cifuentes Parada, Roberto251254 30.77
223 Andrianov, Nikolai251173 26.78
224 Vera, Reynaldo251156 27.73
225 Tischbierek, Raj251051 26.02
226 Georgadze, Tamaz V250961 40.89
227 Kovalev, Andrei250969 26.90
228 Horvath, Jozsef250951 24.13
229 Root, Douglas250975 25.63
230 Alburt, Lev O250953 43.11
231 Loginov, Valery A250854 32.80
232 Murshed, Niaz250859 22.38
233 Faragó, Iván250849 42.49
234 Barbero, Gerardo F250854 27.11
235 Giorgadze, Giorgi250764 23.96
236 Rodriguez, Amador250751 32.06
237 London, Dimitri250674 25.86
238 Kovacevic, Vladimir250557 46.51
239 Flear, Glenn C250550 29.63
240 Sunye Neto, Jaime250456 31.41
241 Garcia Palermo, Carlos250451 34.83
242 Tringov, Georgy P250464 51.56
243 Bronstein, David I250362 64.61
244 Hodgson, Julian M250350 25.18
245 Lau, Ralf250349 28.94
246 Ermenkov, Evgenij250253 39.00
247 Hickl, Joerg250151 23.45
248 Xu Jun250157 26.04
249 Petrosian, Arshak B250152 34.79
250 Kalinitschew, Sergey249968 32.66
251 Anastasian, Ashot249957 24.20
252 Stoica, Valentin249960 38.62
253 Tseitlin, Mikhail S249861 41.29
254 Vukic, Milan249874 45.11
255 Klaric, Zlatko249862 31.93
256 Espig, Lutz249855 39.73
257 Zagrebelny, Sergey249858
258 Lukin, Andrei M249865 40.09
259 Magerramov, Elmar S249860 30.47
260 Antoshin, Vladimir S249776 59.38
261 Granda Zuńiga, Julio E249751 21.60
262 Barlov, Dragan249650 31.67
263 Plaskett, Jim249653 28.53
264 Dizdar, Goran249651 29.82
265 Foisor, Ovidiu249652 29.48
266 Hebden, Mark249552 30.62
267 Nijboer, Friso249558 23.34
268 Velikov, Petar249554 37.50
269 Ernst, Thomas249451 28.12
270 Meyer, E.249374
271 Frias, Victor J249359 32.64
272 Mainka, Romuald249356 25.37
273 Meister, Yakov249263 33.05
274 Jansa, Vlastimil249251 45.84
275 Hazai, Laszlo249251 35.29
276 Zapata, Alonso249250 30.11
277 Wolf, Volker249265 31.06
278 Meduna, Eduard249251 38.05
279 McKay, Roderick M249172 36.63
280 Rajkovic, Dusan249053 46.29
281 Stohl, Igor249052 24.01
282 Renet, Olivier249052 23.77
283 Mnatsakanian, Eduard A249075 49.81
284 Rivas Pastor, Manuel249056 28.21
285 Andres Mendez, Miguel248969
286 Gutman, Lev248950 43.01
287 Georgiev, Krum248952 30.35
288 Shamkovich, Leonid A248861 65.33
289 Efimov, Igor248864 28.04
290 Akopian, Vladimir248755 16.81
291 Ghinda, Mihail Viorel248754 39.18
292 Damljanovic, Branko248752 27.29
293 Van der Sterren, Paul248750 32.54
294 Ree, Hans248757 44.04
295 Yrjola, Jouni248753 28.93
296 Valkesalmi, Kimmo248656 27.41
297 Karpman, Vadim248662 23.38
298 Legky, Nikolay A248672 33.47
299 Eslon, Jaan248673 36.57
300 Polgar, Zsuzsa248550 19.45
301 Gruenberg, Hans Ulrich248454 32.72
302 Abramovic, Boško248451 37.63
303 Gomez Baillo, Jorge H248363 29.45
304 Dueball, Juergen248370 43.50
305 Fokin, Sergey248363 32.95
306 Raicevic, Momcilo248366
307 Drasko, Milan248251 25.81
308 Unzicker, Wolfgang248259 63.26
309 Ionescu, Constantin248255 30.05
310 Popchev, Milko248252 23.88
311 Savchenko, Stanislav248164 21.69
312 Rodriguez Vargas, Orestes248059 45.24
313 Nun, Josef248075 55.19
314 Lukov, Valentin247955 32.80
315 Akhmilovskaya, Elena247965
316 Pytel, Krzysztof247971 43.37
317 Lein, Anatoly247954 57.51
318 Davies, Nigel R247850 28.16
319 Tisdall, Jonathan D247853 30.09
320 Ornstein, Axel247859 36.43
321 Ninov, Kiril247854 19.97
322 Ivkov, Borislav247757 54.88
323 Sznapik, Aleksander247752 37.64
324 Lukacs, Peter247749 38.22
325 Gurgenidze, Bukhuti I247660 54.88
326 Kozlov, V.247661
327 Kurtenkov, Atanas247673 25.16
328 Lechtynsky, Jiri247653 40.85
329 Ruban, Vadim247660 24.30
330 Petkevich, Jusefs247664 47.78
331 Reyes, Juan247672 25.43
332 Kishnev, Sergey247565 31.91
333 Malisauskas, Vidmantas247555 25.15
334 Keitlinghaus, Ludger247557 23.18
335 Lombardy, William J247565 50.82
336 Cabrilo, Goran247458 30.24
337 Renman, Nils Gustaf247463
338 Řgaard, Leif247465 36.73
339 Pekarek, Ales247452 26.79
340 Braga, Fernando247457 30.22
341 Fernandez Garcia, Jose Luis247461 34.41
342 Zhuravliov, Valerij247371 49.80
343 Filipovic, Branko247360 30.98
344 Marangunic, Srdjan247265 44.91
345 Gabdrakhmanov, Rafail247275 29.31
346 Padevsky, Nikola B247268 55.34
347 Skembris, Spyridon247258 30.61
348 Sideif Sade, Fikret I247262 36.74
349 Wilder, Michael247252 26.04
350 Szekely, Peter247256 33.64
351 Dizdarevic, Emir247154 30.49
352 Wahls, Matthias247152 20.68
353 Milos, Gilberto247154 24.91
354 Piasetski, Leon David247072
355 Polasek, Jaroslav247063 31.50
356 Marin, Mihail246955 23.44
357 Hecht, Hans-Joachim246959 49.67
358 Ambroz, Jan246965 34.28
359 Rechlis, Gad246956 21.65
360 Mednis, Edmar J246858 51.52
361 Khenkin, Igor246861 20.52
362 Gavrilov, Alexei246876 18.23
363 Zilberstein, Valery I246866 45.46
364 Yap, Andronico246765
365 Matulovic, Milan246758 53.30
366 Li Zunian246666 30.73
367 Kogan, Boris246657
368 Pribyl, Josef246659 40.96
369 Schneider, Lars Ake246658
370 Hansen, Lars Bo246653 20.02
371 Ryskin, Alexander246566 25.72
372 Belov, Igor246571
373 Schmidt, Wlodzimierz246550 45.47
374 Klundt, Klaus246563 46.76
375 Portisch, Ferenc246567 49.47
376 Klinger, Josef246551 21.31
377 Vokác, Marek246553 29.81
378 Garcia, Gildardo246456 34.56
379 Helmers, Knut J246475 31.65
380 Zaitsev, Igor A246466 50.34
381 Staniszewski, Piotr246453 22.07
382 Nun, Jiri246357 31.17
383 Timoshenko, Georgy246275 22.33
384 Rukavina, Josip246261 45.84
385 Winants, Luc246251 25.74
386 Mortensen, Erling246155 33.48
387 Verduga, Denis Homero246163
388 Khasin, Alexander246060 37.42
389 Ostojic, Predrag246068 50.61
390 Haba, Petr245955 23.73
391 Veinger, Itzhak245960 50.23
392 Blatny, Pavel245852 20.27
393 Barbulescu, Dan245859 24.27
394 Okhotnik, Vladimir245863 38.59
395 Rubinetti, Jorge A245763 43.50
396 Gurevich, Dmitry245751 32.05
397 Kosten, Anthony C245751 30.18
398 Norwood, David245656 19.98
399 Levitt, Jonathan245652 25.32
400 Knezevic, Milorad245653 51.91
401 Rachels, Stuart245662 19.01
402 Pedersen, Erik245570 30.05
403 Ziatdinov, Raset245561 29.76
404 Hawelko, Marek245552 29.14
405 Piket, Jeroen245451 19.67
406 Reefschlaeger, Helmut245462 44.48
407 Ioseliani, Nana245356 26.63
408 Reeh, Oliver245359 24.70
409 Negulescu, Adrian245357 27.30
410 Kamsky, Gata245361 14.33
411 Wolff, Patrick G245254 20.62
412 Lalev, Dimitar245262 28.70
413 Radulov, Ivan245255 49.73
414 Ardiansyah, Haji245267 36.82
415 Cramling, Dan245161 29.65
416 Neckar, Lubomir245163 38.16
417 Nikolic, Zivoslav245155 34.80
418 Janovsky, Sergey245170 28.62
419 Sigurjónsson, Gudmundur245162 41.01
420 Tempone, Marcelo245060 26.06
421 Litvinov, Vladimir245067 47.20
422 Kouatly, Bachar244950 30.57
423 Krnic, Zdenko244964 40.99
424 Kotronias, Vasilios244952 24.10
425 Kolev, Atanas244963 21.21
426 Orso, Miklos244870 32.31
427 Trapl, Jindrich244869 46.52
428 Birnboim, Nathan244855 37.84
429 Spiridonov, Nikola244757 50.59
430 Kraidman, Yair244672 55.91
431 Shabalov, Alexander244654 21.05
432 Navrotescu, Catalin244669 20.92
433 Schmittdiel, Eckhard244655 28.38
434 Sadler, Matthew244666 14.37
435 Hamann, Svend244675 47.97
436 Rakic, Tomislav244561 53.88
437 Tolnai, Tibor244553 24.02
438 Levin, Felix244564 29.90
439 Karasev, Vladimir I244469 50.29
440 Steinbacher, Matthias244459 37.04
441 Prandstetter, Eduard244352 39.79
442 Leski, Marc244375 27.26
443 Plachetka, Jan244350 43.62
444 Bonin, Jay R244262 33.23
445 Spassov, Liuben244161 45.52
446 Motwani, Paul244159 26.30
447 Solozhenkin, Evgeniy244168 22.16
448 Lanc, Alois244152 40.62
449 Djuric, Stefan244152 33.18
450 Magomedov, Magaram244067 22.36
451 Piesina, Gintautas244063 36.48
452 Nowak, Ignacy244060 39.72
453 Imanaliev, Taalaibek244071
454 Handoko, Edhi243966 28.09
455 Hausner, Ivan243957 36.46
456 Gruenenwald, Joerg243966 23.32
457 Wockenfuss, Klaus243960 37.09
458 Bukal, Vladimir Sr243957 48.91
459 Toshkov, Tihomir243857 28.86
460 Saltaev, Mihail243860 25.86
461 Kuligowski, Adam243858 32.77
462 Ochoa de Echaguen, F Javier243864 34.07
463 Wittmann, Walter243759 40.55
464 Schulte, Oliver243760 19.77
465 Kirov Ivanov, Nino243756 43.06
466 Semeniuk, Alexander A243764 36.05
467 Horváth, Csaba243652 20.32
468 Benko, Pal C243663 60.21
469 Soltis, Andrew E243560 41.34
470 Casper, Thomas243454 29.54
471 Makropoulos, Georgios243464 35.01
472 Rigo, Janos243460 39.92
473 Szmetan, Jorge243458 38.34
474 Gleizerov, Evgeny243462 25.53
475 Kallai, Gabor243460 29.61
476 Arkell, Keith C243357 27.73
477 Semkov, Semko243353 28.59
478 Lengyel, Levente243374 55.30
479 Sonntag, Hans Hubert243360
480 Bellin, Robert243365 36.25
481 Atlas, Valeri243369 20.45
482 Ye Jiangchuan243271 27.86
483 Thorsteins, Karl243253 23.96
484 Petran, Pal243257 42.04
485 Conquest, Stuart243250 21.58
486 Thorhallsson, Throstur243159 19.53
487 Grivas, Efstratios243164 22.50
488 Bilek, István243171 56.13
489 Mariotti, Sergio243172 42.14
490 Kelecevic, Nedeljko243174 41.55
491 Hug, Werner243161 36.05
492 Barczay, Laszlo243061 52.61
493 Maksimovic, Branimir243057 33.12
494 Podzielny, Karl Heinz243074 34.05
495 Wirthensohn, Heinz243059 37.40
496 Sellos, Didier242969 31.61
497 Vallifuoco, Giacomo242975 31.40
498 Temirbaev, Serik242864
499 Bartels, Hans A242868 32.42
500 Karolyi, Tibor Jr242851 26.87

These ratings, calculated as of September 30, 1988, incorporate all games (against rated opponents) played in the time between October 1, 1987 and September 30, 1988, along with the ratings that were already calculated as of September 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 September 30, 1988. This represents the player's estimated strength on October 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 October 1, 1988. The +/- value represents the standard deviation of that estimate; the player's true strength on October 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 October 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 September 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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