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Top 10 active players as of March 31, 1998

  #  

Player Rating +/-
1 Kasparov, Garry K283949
2 Anand, Viswanathan282747
3 Kramnik, Vladimir281847
4 Ivanchuk, Vassily279447
5 Karpov, Anatoly E275847
6 Shirov, Alexei274746
7 Adams, Michael273247
8 Kamsky, Gata273152
9 Topalov, Veselin272947
10 Gelfand, Boris272947

About these ratings

Top 500 active players as of March 31, 1998

  #  

Player Rating +/- Best? 75%? Age
1 Kasparov, Garry K28394937.6% #334.96
2 Anand, Viswanathan28274726.6% #428.30
3 Kramnik, Vladimir28184720.1% #522.77
4 Ivanchuk, Vassily2794479.2% #729.04
5 Karpov, Anatoly E2758472.1% #1246.86
6 Shirov, Alexei2747461.2% #1525.74
7 Adams, Michael2732470.5% #1926.37
8 Kamsky, Gata2731521.0% #2123.83
9 Topalov, Veselin2729470.5% #2023.04
10 Gelfand, Boris2729470.4% #2029.77
11 Svidler, Peter2715480.3% #2621.79
12 Bareev, Evgeny2704490.2% #3231.36
13 Rublevsky, Sergei2693500.1% #4023.46
14 Dreev, Alexey2688490.1% #4329.20
15 Georgiev, Kiril2685490.1% #4532.34
16 Short, Nigel D268448 #4532.83
17 Akopian, Vladimir268349 #4726.32
18 Polgar, Judit268048 #4821.69
19 Krasenkow, Michal267148 #5634.38
20 Khalifman, Alexander267147 #5632.20
21 Zvjaginsev, Vadim266949 #5821.62
22 Jussupow, Artur M266849 #6038.13
23 Beliavsky, Alexander G266748 #6044.29
24 Salov, Valery B266649 #6233.85
25 Leko, Peter265948 #6818.56
26 Tiviakov, Sergei265848 #6925.13
27 Sadler, Matthew265348 #7323.88
28 Almasi, Zoltan265348 #7421.59
29 Gurevich, Mikhail N265148 #7639.11
30 Morozevich, Alexander265149 #7720.70
31 Oll, Lembit264948 #7831.93
32 Nikolic, Predrag264848 #8037.55
33 Azmaiparashvili, Zurab A264650 #8338.04
34 Lautier, Joel264447 #8324.96
35 Milov, Vadim264350 #8625.66
36 Timman, Jan H264348 #8546.30
37 van Wely, Loek264246 #8525.48
38 Seirawan, Yasser264152 #9138.02
39 Sakaev, Konstantin263949 #9023.96
40 Tkachiev, Vladislav263749 #9324.39
41 Onischuk, Alexander263649 #9422.58
42 Dautov, Rustem263249 #9932.34
43 Yermolinsky, Alex V263250 #10039.96
44 Granda Zuńiga, Julio E263150 #10131.10
45 Christiansen, Larry M263149 #10141.76
46 Sokolov, Ivan262947 #10029.80
47 Hellers, Ferdinand262955 #10729.18
48 Lputian, Smbat G262850 #10440.13
49 Vaganian, Rafael A262649 #10646.46
50 Korchnoi, Viktor L262547 #10667.02
51 Piket, Jeroen262246 #10829.18
52 Rozentalis, Eduardas262148 #11134.84
53 Hracek, Zbynek262048 #11327.56
54 Chernin, Alexander M262048 #11238.07
55 Eingorn, Viacheslav S261851 #11841.35
56 Adianto, Utut261651 #12133.04
57 Smirin, Ilia261549 #11930.19
58 Giorgadze, Giorgi261448 #11933.47
59 Graf, Alexander261450 #12135.60
60 Ehlvest, Jaan261347 #12035.46
61 Illescas Cordoba, Miguel261349 #12132.33
62 Sturua, Zurab261353 #12538.81
63 Fominyh, Alexander261352 #12438.79
64 Ibragimov, Ildar261347 #12130.62
65 Hjartarson, Jóhann261249 #12335.15
66 Tukmakov, Vladimir B261250 #12352.04
67 Speelman, Jonathan S261149 #12341.50
68 Atalik, Suat260848 #12633.47
69 Aleksandrov, Aleksej260848 #12724.89
70 Dolmatov, Sergey V260751 #13039.11
71 Malaniuk, Vladimir P260648 #12840.69
72 Sveshnikov, Evgeny E260649 #13148.14
73 Lutz, Christopher260548 #13027.10
74 Huzman, Alexander260553 #13535.97
75 Fedorov, Alexei260450 #13225.51
76 Baburin, Alexander260351 #13531.12
77 Shipov, Sergei260251 #13631.95
78 Alterman, Boris260149 #13527.91
79 Minasian, Artashes260051 #13931.19
80 Voitsekhovsky, Stanislav259951 #13933.65
81 Glek, Igor V259948 #13836.40
82 Dvoiris, Semen I259849 #13939.41
83 Hansen, Curt259849 #14033.54
84 Epishin, Vladimir259747 #13832.72
85 Miles, Anthony J259547 #14042.93
86 Morovic Fernández, Iván E259551 #14335.02
87 Khenkin, Igor259548 #14230.03
88 Bologan, Viktor259548 #14226.30
89 Movsesian, Sergei259548 #14119.41
90 Benjamin, Joel L259450 #14334.05
91 Korneev, Oleg259448 #14228.68
92 deFirmian, Nicholas E259449 #14340.68
93 Gulko, Boris F259349 #14351.14
94 Kaidanov, Gregory S259351 #14638.47
95 Andersson, Ulf259348 #14346.76
96 Wolff, Patrick G259355 #14830.13
97 Volkov, Sergey259351 #14624.15
98 Savchenko, Stanislav259251 #14731.19
99 Portisch, Lajos259251 #14760.98
100 Wahls, Matthias259250 #14630.18
101 Ljubojevic, Ljubomir259249 47.41
102 Lastin, Alexander259151 21.42
103 Beim, Valery259051 48.04
104 Polgar, Zsuzsa259058 28.94
105 Kavalek, Lubomir258965 54.64
106 Timoshenko, Georgy258851 31.83
107 Rogers, Ian258649 37.77
108 Psakhis, Lev B258548 39.34
109 Nunn, John D M258551 42.93
110 Shabalov, Alexander258551 30.55
111 Filippov, Valerij258549 22.34
112 Ribli, Zoltán258450 46.57
113 Yakovich, Yuri258448 35.34
114 Pintér, József258350 44.39
115 Goldin, Alexander258351 33.09
116 Balashov, Yury S258249 49.05
117 Kharitonov, Andrey Y258249 38.98
118 Hansen, Lars Bo258252 29.52
119 Wojtkiewicz, Aleksander258149 35.21
120 Komarov, Dimitri258149 29.33
121 Kengis, Edvins258050 38.96
122 Ftácnik, Lubomír257948 40.42
123 Gavrikov, Victor N257852 40.67
124 Kuzmin, Alexey257865 35.06
125 Kožul, Zdenko257848 31.86
126 Anastasian, Ashot257752 33.71
127 Kharlov, Andrei257749 29.36
128 Magerramov, Elmar S257671 39.97
129 Hübner, Robert257650 49.40
130 Cvitan, Ognjen257647 36.47
131 Sutovsky, Emil257550 20.53
132 Romanishin, Oleg M257448 46.22
133 Hickl, Joerg257450 32.95
134 Lerner, Konstantin Z257451 48.09
135 Milos, Gilberto257351 34.42
136 Pigusov, Evgeny257351 36.99
137 Yudasin, Leonid G257349 38.65
138 Razuvaev, Yury S257250 52.47
139 Vaisser, Anatoli257250 49.07
140 Hodgson, Julian M257148 34.68
141 Rechlis, Gad257158 31.15
142 Sorokin, Maxim257150 30.19
143 Asrian, Karen257052 17.93
144 Sokolov, Andrey Y257050 35.03
145 Arkhangelsky, Boris256967 67.19
146 Xu Jun256753 35.54
147 Vyzmanavin, Alexey256754 38.25
148 Torre, Eugenio256657 46.41
149 Dorfman, Iosif D256554 45.91
150 Ionov, Sergey256454 36.23
151 Gurevich, Dmitry256450 41.55
152 Serper, Grigory256454 28.55
153 Pétursson, Margeir256352 38.13
154 Shneider, Aleksandr256354 35.86
155 Ulibin, Mikhail256248 26.83
156 Ruban, Vadim256264 33.80
157 Pugachov, Alexey256269 32.59
158 Lalic, Bogdan256147 34.06
159 Varga, Z.256161 27.72
160 Damljanovic, Branko256150 36.79
161 Ginsburg, Gennadij256062 26.64
162 Bischoff, Klaus255949 36.81
163 Guseinov, Aidyn255960 46.25
164 Kurajica, Bojan255950 50.38
165 Kruppa, Yuri255952 33.78
166 Kotsur, Pavel255853 24.24
167 Golod, Vitali255853 26.76
168 Rustemov, Alexander255850 24.73
169 Novikov, Igor A255649 35.86
170 Aseev, Konstantin N255550 37.45
171 Spasov, Vasil255557 27.12
172 Kuzmin, Gennady P255451 52.20
173 Podgaets, Mikhail Y255468 50.69
174 Spraggett, Kevin B255449 43.39
175 Sherbakov, Ruslan255349 28.55
176 Iuldachev, Saidali255355 30.17
177 Stohl, Igor255348 33.51
178 Kindermann, Stefan255349 38.26
179 Golubev, Mihail255256 27.84
180 Ikonnikov, Vyacheslav255253 32.04
181 Yemelin, Vasily255251 22.16
182 Shariyazdanov, Andrey255251 21.72
183 Gabriel, Christian255249 23.08
184 Palac, Mladen255148 27.12
185 Tregubov, Pavel V255149 26.28
186 Malakhov, Vladimir255152 17.34
187 Nisipeanu, Liviu Dieter255150 21.66
188 Babula, Vlastimil255049 24.50
189 Dizdar, Goran255049 39.32
190 Delchev, Aleksander255050 26.71
191 Hertneck, Gerald254951 34.54
192 Makarov, Marat254952 34.90
193 Agdestein, Simen254956 30.88
194 Spassky, Boris V254854 61.17
195 Ivanov, Sergey254850 36.51
196 Kosashvili, Yona254862 27.74
197 Shulman, Yuri254850 22.92
198 Dzindzichashvili, Roman Y254857 53.90
199 Ye Jiangchuan254752 37.36
200 Knaak, Rainer F254755 45.04
201 Gleizerov, Evgeny254750 35.03
202 Yurtaev, Leonid254652 38.91
203 Landa, Konstantin254549 25.86
204 Wu Shaobin254462 29.16
205 Vasiukov, Evgeny A254458 65.07
206 Barua, Dibyendu254352 31.43
207 Peng Xiaomin254354 24.97
208 Spangenberg, Hugo254349 22.36
209 Ilincic, Zlatko254151 29.89
210 Lobron, Eric254149 37.90
211 Sax, Gyula254148 46.79
212 Burmakin, Vladimir254148 30.82
213 Emms, John M254150 31.05
214 Stefansson, Hannes254149 25.70
215 Dlugy, Maxim254167 32.17
216 Fedorowicz, John P254156 39.51
217 Chiburdanidze, Maia G254050 37.20
218 Smikovski, Ivan254065 25.80
219 Soffer, Ram254056 32.57
220 Slobodjan, Roman254050 23.25
221 Ubilava, Elizbar E254054 47.59
222 Gofshtein, Leonid D253950 44.94
223 Frolov, Artur253965 27.67
224 Galkin, Alexander253949 19.16
225 Dizdarevic, Emir253951 39.99
226 Lugovoi, Aleksei253950 23.07
227 Tseshkovsky, Vitaly V253850 53.52
228 Smagin, Sergey253856 39.56
229 Dao Thien Hai253851 19.89
230 Van der Sterren, Paul253849 42.04
231 Kacheishvili, Giorgi253754 21.14
232 Baklan, Vladimir253751 20.10
233 Agrest, Evgenij253750 31.63
234 Wang Zili253554 29.80
235 Mikhalchishin, Adrian B253553 43.37
236 Orlov, Georgi253571
237 Nikolenko, Oleg253558 38.78
238 Miladinovic, Igor253451 24.18
239 Markovic, Miroslav253453 24.90
240 Browne, Walter S253459 49.22
241 Bezgodov, Alexei253453 28.75
242 Moroz, Alexander253360 37.20
243 Brodsky, Michail253250 29.01
244 Kotronias, Vasilios253250 33.60
245 Alburt, Lev O253268 52.61
246 Schandorff, Lars253250 32.94
247 Ivanov, Alexander V2253267 41.91
248 Hebden, Mark253250 40.13
249 Zaichik, Gennady L253262 41.14
250 Greenfeld, Alon253150 33.95
251 Poluljahov, Aleksandr253150 32.82
252 Polovodin, Igor A253168 43.02
253 Arkhipov, Sergey253059 43.77
254 Ivanov, Alexander V253055 41.91
255 Zagrebelny, Sergey253051
256 Luther, Thomas253048 28.41
257 Hamdouchi, Hichem252952 25.48
258 Galliamova, Alisa252951 26.20
259 Avrukh, Boris252951 20.23
260 Neverov, Valery252952 33.78
261 Rytshagov, Mikhail252949 30.38
262 King, Daniel J252953 34.59
263 Magem Badals, Jordi252849 30.60
264 van der Wiel, John T H252849 38.64
265 Feygin, Michail252861 23.16
266 Hort, Vlastimil252853 54.22
267 Nielsen, Peter Heine252749 24.85
268 Shabanov, Yury F252767 60.39
269 Chuchelov, Vladimir252751 28.51
270 Kiselev, Sergey252751 36.55
271 Kasimdzhanov, Rustam252653 18.32
272 Davies, Nigel R252652 37.67
273 Antonio, Rogelio Jr252656 36.12
274 Kupreichik, Viktor D252549 48.74
275 Bönsch, Uwe252552 39.46
276 Horvath, Jozsef252548 33.63
277 Marin, Mihail252550 32.94
278 Mikhalevski, Victor252449 25.72
279 Fishbein, Alexander252464 29.90
280 Sermek, Drazen252348 29.17
281 Irzhanov, Ruslan252354 21.34
282 Smyslov, Vassily V252351 77.02
283 Arnason, Jon L252363 37.38
284 Krivonosov, Oleg252361 36.89
285 Vakhidov, Tahir252257
286 Kishnev, Sergey252258 41.41
287 Stangl, Markus252251 28.92
288 Lanka, Zigurds252250 37.86
289 Efimov, Igor252249 37.54
290 Jakubiec, Artur252257 24.33
291 Comas Fabrego, Luis252154 26.77
292 Watson, William N252158 35.95
293 Horváth, Csaba252148 29.82
294 Apicella, Manuel252151 27.94
295 Solozhenkin, Evgeniy252152 31.67
296 Kumaran, Dharshan252055 22.82
297 Mueller, Karsten252052 27.36
298 Gorelov, Sergey G252066 40.62
299 Strikovic, Aleksa251950 36.88
300 Gausel, Einar251949 34.34
301 Bacrot, Etienne251950 15.19
302 Degraeve, Jean Marc251849 27.18
303 Ye Rongguang251855 34.49
304 Rashkovsky, Nukhim N251852 51.95
305 Kolev, Atanas251755 30.71
306 Chekhov, Valery A251756 42.34
307 Kalinitschew, Sergey251653 42.16
308 Kovacevic, Vladimir2251671 43.04
309 Zakharevich, Igor251652 34.71
310 Saltaev, Mihail251653 35.37
311 Ruzele, Darius251553 29.92
312 Hector, Jonny251548 34.13
313 Adorján, András251555 47.99
314 Danielian, Oganes251558
315 Bochkarev, Alexander251573 22.91
316 Finkel, Alexander251552 23.25
317 Kiriakov, Petr251452 23.22
318 Kveinys, Aloyzas251450 35.73
319 Shchekachev, Andrei251451 25.43
320 Nogueiras, Jesus251451 38.70
321 Vera, Reynaldo251450 37.23
322 Loginov, Valery A251450 42.30
323 Vaulin, Alexander251448 41.04
324 Kuporosov, Viktor251355 36.51
325 Tischbierek, Raj251351 35.52
326 Krogius, Nikolay V251362 67.69
327 Liss, Eran251354 22.75
328 Darga, Klaus V251265 64.10
329 Sagalchik, Gennadij251259 28.94
330 Notkin, Maksim251253 34.30
331 Istratescu, Andrei251249 22.33
332 Chernyshov, Konstantin251157 30.80
333 Sherbakov, Vitaly S251175 42.78
334 Rodriguez, Amador251150 41.56
335 Zezulkin, Jurij251154 26.62
336 Schlosser, Philipp251149 29.62
337 Zhang Zhong251053 19.57
338 Suba, Mihai251053 50.83
339 Cámpora, Daniel H251052 40.75
340 Temirbaev, Serik251054
341 Reinderman, Dimitri251053 25.63
342 Smejkal, Jan250952 52.02
343 Gyimesi, Zoltan250949 20.99
344 Sosonko, Gennadi250952 54.87
345 Leitao, Rafael250853 18.26
346 Malisauskas, Vidmantas250854 34.66
347 Dragomarezkij, Evgeni250857 45.20
348 Velimirovic, Dragoljub250851 55.88
349 Egin, Vladimir250857
350 Hall, Jesper250755 26.71
351 Solomon, Stephen J250762 34.69
352 Kaminski, Marcin250750 21.06
353 Shmuter, Leonid250762 28.91
354 Zontakh, Andrey250654 27.41
355 Ricardi, Pablo250651 36.10
356 Wang Pin250560 23.30
357 Zarnicki, Pablo250550 25.38
358 Kobalija, Mihail250451 19.91
359 Nijboer, Friso250448 32.85
360 Zelcic, Robert250448 32.53
361 Miralles, Gilles250458 32.15
362 Yandemirov, Valeri250450 35.14
363 Didishko, Vereslav250452 48.97
364 Vorotnikov, Vladislav V250456 50.62
365 Krakops, Maris250354 19.99
366 Ionescu, Constantin250351 39.55
367 Xie Jun250349 27.42
368 Arencibia, Walter250350 30.69
369 Zakharstov, Viacheslav V250362 30.00
370 Lesiege, Alexandre250254 22.62
371 Kempinski, Robert250249 20.72
372 Timoshchenko, Gennady250251 48.92
373 Drasko, Milan250251 35.32
374 Manor, Ilan250257 28.43
375 Sunye Neto, Jaime250256 40.91
376 Cifuentes Parada, Roberto250250 40.28
377 Cebalo, Mišo250249 53.15
378 Norwood, David250161 29.49
379 Kosic, Dragan250154 28.13
380 Nadyrhanov, Sergey250155 34.51
381 Zifroni, Dov250154 22.12
382 Totsky, Leonid250152 30.64
383 Kantsler, Boris250054 35.95
384 Cramling, Pia250048 34.93
385 Kovacevic, Vladimir250053 56.01
386 Ivanovic, Božidar250054 51.60
387 Blatny, Pavel250048 29.77
388 Larsen, Bent249955 63.07
389 Faragó, Iván249948 51.99
390 Chandler, Murray G249956 37.98
391 Danielsen, Henrik249952 32.19
392 Agamaliev, Djamil249969 23.58
393 Bagaturov, Giorgi249955 33.34
394 Liang Jinrong249954 37.86
395 Maksimenko, Andrei249853 28.32
396 Palatnik, Semen A249865 48.01
397 Olafsson, Helgi249852 41.63
398 Podzielny, Karl Heinz249861 43.56
399 Rabiega, Robert249751 27.16
400 Koniushkov, Igor249757 35.34
401 Volzhin, Alexander249651 27.16
402 Uhlmann, Wolfgang249652 63.01
403 Maiorov, Oleg249652 26.69
404 Heinemann, Thies249654 27.07
405 Gil Capape, Javier249562 30.89
406 Polgar, Sofia249552 23.41
407 Polak, Tomas249550 23.93
408 Najer, Evgeniy249554 20.77
409 Sokolin, Leonid M249464
410 Gallagher, Joseph G249449 33.91
411 Johansen, Darryl K249357 39.16
412 Ponomariov, Ruslan249356 14.47
413 Donchev, Dimitar I249373 39.69
414 Milov, Leonid249358 32.15
415 Lau, Ralf249351 38.45
416 Kudrin, Sergey249355 38.57
417 Votava, Jan249349 23.34
418 Conquest, Stuart249349 31.08
419 Djuric, Stefan249351 42.68
420 Tsesarsky, Ilya249355 38.48
421 Vogt, Lothar H249352 46.20
422 Tseitlin, Mark D249350 54.52
423 Khasin, Alexander249358 46.92
424 Teske, Henrik249249 30.09
425 Mukhametov, Eldar249257 28.86
426 Sokolovs, Andrei249258 26.11
427 Hulak, Krunoslav249253 46.85
428 Enders, Peter249251 35.16
429 Guliev, Sarhan249152 29.99
430 Fridman, Daniel249152 22.13
431 Grivas, Efstratios249151 32.00
432 Gavrilakis, Nikolaos249165 43.02
433 Belikov, Vladimir249154 26.66
434 Popchev, Milko249156 33.39
435 Liang Chong249167
436 Nevednichy, Vladislav249050 28.58
437 Rausis, Igors249048 36.98
438 Thorsteins, Karl249072 33.47
439 Meister, Yakov249073 42.55
440 Frias, Victor J249071 42.14
441 Badea, Bela249050 29.11
442 Quinteros, Miguel A248961 50.26
443 Mirumian, Vigen248952 20.51
444 Moskalenko, Viktor248856 37.32
445 Keitlinghaus, Ludger248849 32.69
446 Supatashvili, Khvicha248861 28.99
447 Geller, Efim P248869 73.08
448 Hansen, Sune Berg248852 26.94
449 Campos Moreno, Javier B248854 39.07
450 Kosten, Anthony C248850 39.69
451 Liiva, Riho248858 22.74
452 Seeman, Tarvo248754 28.54
453 Sulskis, Sarunas248751 25.35
454 Akhmadeev, Vadim248759 41.72
455 Mitenkov, Alexey248759 37.06
456 Dyachkov, Sergej248760 21.40
457 Ward, Christopher248649 30.01
458 Vukic, Milan248656 54.62
459 Lazarev, Vladimir248650 33.82
460 Kazhgaleyev, Murtas248658
461 Kholmov, Ratmir D248552 72.88
462 Maljutin, Evgeni248569 26.42
463 Akesson, Ralf248548 37.15
464 Godena, Michele248548 30.75
465 Stanec, Nikolaus248449 29.92
466 Pavlovic, Milos248453 34.24
467 Veingold, Aleksander248449 44.47
468 Safin, Shukhrat248458 27.99
469 Pfleger, Helmut248371 54.65
470 Popovic, Petar248350 39.13
471 Antunes, Antonio248353 36.15
472 Kovalev, Andrei248356 36.40
473 McDonald, Neil R248350 31.19
474 Groszpeter, Attila248250 37.81
475 Har Zvi, Ronen248256 21.47
476 Vescovi, Giovanni P248251 19.80
477 Rodriguez, Andres248151 24.28
478 Gdanski, Jacek248150 27.34
479 Shtyrenkov, Veniamen248157 39.93
480 Movsziszian, Karen248151 35.23
481 Janjgava, Lasha248169 27.90
482 Haba, Petr248051 33.23
483 Arbakov, Valentin248053 46.18
484 Chabanon, Jean Luc248052 26.63
485 Annageldyev, Orazly248068 38.03
486 Kirov Ivanov, Nino248061 52.56
487 Bauer, Christian247950 21.22
488 Buturin, Vladimir247962 54.37
489 Iljushin, Alexei247961 17.67
490 Rahman, Ziaur247957
491 Kallai, Gabor247952 39.11
492 Nikolaidis, Ioannis247952 27.24
493 Kakageldyev, Amanmurad247865 48.26
494 Levin, Felix247852 39.40
495 Markowski, Tomasz247850 22.67
496 Relange, Eloi247849 21.75
497 Wells, Peter K247848 32.95
498 Ovetchkin, Roman247856 25.21
499 Maherramzade, Javad247860 21.89
500 Tunik, Gennady247753 44.84

These ratings, calculated as of March 31, 1998, incorporate all games (against rated opponents) played in the time between April 1, 1997 and March 31, 1998, along with the ratings that were already calculated as of March 31, 1997. 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, 1998. This represents the player's estimated strength on April 1, 1998.

+/- 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, 1998. The +/- value represents the standard deviation of that estimate; the player's true strength on April 1, 1998 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, 1998. 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, 1998. 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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