< February 29, 1980     Back to date list    April 30, 1980 >

Top 10 active players as of March 31, 1980

  #  

Player Rating +/-
1 Karpov, Anatoly E279850
2 Korchnoi, Viktor L276449
3 Tal, Mikhail272149
4 Kasparov, Garry K272051
5 Portisch, Lajos271349
6 Polugaevsky, Lev A270950
7 Spassky, Boris V268249
8 Geller, Efim P267851
9 Larsen, Bent267149
10 Petrosian, Tigran V267149

About these ratings

Top 500 active players as of March 31, 1980

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27985051.9% #328.86
2 Korchnoi, Viktor L27644921.3% #649.02
3 Tal, Mikhail2721495.0% #1443.39
4 Kasparov, Garry K2720515.3% #1416.96
5 Portisch, Lajos2713493.6% #1642.98
6 Polugaevsky, Lev A2709503.2% #1845.36
7 Spassky, Boris V2682490.9% #2943.17
8 Geller, Efim P2678510.9% #3155.08
9 Larsen, Bent2671490.5% #3445.07
10 Petrosian, Tigran V2671490.5% #3550.79
11 Beliavsky, Alexander G2671490.6% #3526.29
12 Timman, Jan H2666480.3% #3728.30
13 Balashov, Yury S2664500.4% #3931.05
14 Romanishin, Oleg M2663490.4% #4028.22
15 Mecking, Henrique2655681.5% #5428.19
16 Hübner, Robert2651490.2% #4731.40
17 Hort, Vlastimil2643480.1% #5236.22
18 Tukmakov, Vladimir B2643530.2% #5534.04
19 Andersson, Ulf2643480.1% #5328.76
20 Gulko, Boris F2642530.2% #5533.14
21 Ribli, Zoltán2639500.1% #5728.57
22 Vaganian, Rafael A2637490.1% #5728.46
23 Ljubojevic, Ljubomir2634490.1% #6029.41
24 Dolmatov, Sergey V2633550.1% #6421.11
25 Gufeld, Eduard E2632550.1% #6344.03
26 Vasiukov, Evgeny A2631580.2% #6747.07
27 Lerner, Konstantin Z2631560.2% #6630.09
28 Savon, Vladimir A2630560.1% #6739.51
29 Tseshkovsky, Vitaly V2629500.1% #6435.52
30 Jussupow, Artur M2625520.1% #6920.13
31 Dzindzichashvili, Roman Y2625540.1% #7035.90
32 Sveshnikov, Evgeny E262351 #6930.14
33 Ivanov, Igor V2623700.5% #8133.23
34 Gheorghiu, Florin262150 #7135.98
35 Kupreichik, Viktor D2620530.1% #7330.74
36 Browne, Walter S262049 #7231.22
37 Mikhalchishin, Adrian B2620520.1% #7325.37
38 Kavalek, Lubomir2619510.1% #7336.64
39 Kholmov, Ratmir D2617560.1% #7754.88
40 Smejkal, Jan261649 #7534.02
41 Dorfman, Iosif D2614520.1% #7827.91
42 Kuzmin, Gennady P261451 #7634.20
43 Smyslov, Vassily V260851 #8259.02
44 Alburt, Lev O260853 #8334.61
45 Rashkovsky, Nukhim N260656 #8633.95
46 Makarichev, Sergey Y260652 #8526.37
47 Unzicker, Wolfgang260556 #8854.76
48 Sax, Gyula260449 #8528.79
49 Psakhis, Lev B2604610.1% #9321.34
50 Parma, Bruno260455 #8938.25
51 Miles, Anthony J260347 #8524.93
52 Bagirov, Vladimir K260253 #9043.62
53 Gligoric, Svetozar259950 #8957.16
54 Gipslis, Aivars259760 #10043.15
55 Georgadze, Tamaz V259652 #9432.39
56 Dvoretsky, Mark I2596650.1% #10332.31
57 Kochiev, Alexander259554 #9624.02
58 Liberzon, Vladimir M259551 #9543.02
59 Sosonko, Gennadi259549 #9436.87
60 Ivkov, Borislav259150 #9746.38
61 Palatnik, Semen A2591650.1% #10730.01
62 Razuvaev, Yury S259052 #10034.47
63 Gruenfeld, Yehuda258755 #10524.09
64 Nunn, John D M258551 #10424.93
65 Adorján, András257949 #10929.99
66 Bronstein, David I257855 #11256.12
67 Tarjan, James E257853 #11228.11
68 Kurajica, Bojan257754 #11432.38
69 Olafsson, Fridrik257057 #12345.18
70 Pfleger, Helmut256959 #12336.65
71 Taimanov, Mark E256958 #12454.15
72 Zakharov, Alexander V2569750.1% #13436.48
73 Grigorian, Karen A256857 #12332.57
74 Tseitlin, Mikhail S256854 #12232.79
75 Chekhov, Valery A256868 #13024.34
76 Seirawan, Yasser256751 #12120.02
77 Luczak, Andrzej256754 #12331.32
78 Szabó, László256563 #13163.03
79 Suetin, Alexey S256560 #12853.37
80 Matanovic, Aleksandar256558 #12849.86
81 Darga, Klaus V256360 #13046.10
82 Byrne, Robert E256251 #12551.94
83 Stean, Michael F255850 #12826.57
84 Kapengut, Albert Z255763 #13835.74
85 Panchenko, Alexander N255761 #13726.49
86 Antoshin, Vladimir S255660 #13750.88
87 Lein, Anatoly255551 #13249.01
88 Rogoff, Kenneth S255562 #13927.02
89 Magerramov, Elmar S255558 #13621.97
90 Ftácnik, Lubomír255351 #13322.42
91 Klovans, Janis255269 #14644.97
92 Zaitsev, Igor A255155 #13841.84
93 Uhlmann, Wolfgang255151 #13645.01
94 Timoshchenko, Gennady255155 #13830.92
95 Lombardy, William J255054 #13842.32
96 Matulovic, Milan254860 #14444.81
97 Kovacevic, Vladimir254856 #14138.01
98 Quinteros, Miguel A254749 #13832.26
99 Csom, István254750 #13939.83
100 Tringov, Georgy P254659 #14443.07
101 Filip, Miroslav254660 51.43
102 Ubilava, Elizbar E254566 29.59
103 Ivanov, Alexander V254261 23.91
104 Pachmann, Ludek254258 55.89
105 Panno, Oscar R254252 45.04
106 Knaak, Rainer F254151 27.04
107 Vogt, Lothar H254049 28.20
108 Nemet, Ivan253857 36.96
109 Evans, Larry M253867 48.02
110 Veingold, Aleksander253768 26.47
111 Nikolac, Juraj253654 47.94
112 Najdorf, Miguel253653 69.95
113 Nei, Iivo253664 48.42
114 Yurtaev, Leonid253563 20.91
115 Shamkovich, Leonid A253552 56.83
116 Bukic, Enver253555 42.33
117 Peters, John A253555 29.14
118 Katalymov, Boris N253374
119 Vitolinš, Alvis253364 33.79
120 Ree, Hans253349 35.54
121 Kaplan, Julio P252858 29.68
122 Eingorn, Viacheslav S252670 23.35
123 Vorotnikov, Vladislav V252567 32.62
124 Biyiasas, Peter252552 29.37
125 Torre, Eugenio252450 28.41
126 Reshevsky, Samuel H252456 68.35
127 Benko, Pal C252359 51.71
128 Peresipkin, Vladimir252366
129 Pintér, József252354 26.39
130 Díez del Corral, Jesús252160 46.98
131 Piasetski, Leon David252171
132 Petrosian, Arshak B252068 26.29
133 Stoica, Valentin251961 30.13
134 Rogulj, Branko251859 28.66
135 Schmidt, Wlodzimierz251852 36.97
136 Speelman, Jonathan S251852 23.50
137 Vukic, Milan251754 36.62
138 Anikaev, Yury251659 31.76
139 Faragó, Iván251649 33.99
140 Moiseev, Oleg L251563 54.90
141 Averkin, Orest N251374 36.10
142 Kakageldyev, Amanmurad251267 30.26
143 Lutikov, Anatoly S251264 47.15
144 Weinstein, Norman251162 29.49
145 Gurgenidze, Bukhuti I251169 46.38
146 Knezevic, Milorad251152 43.42
147 Radulov, Ivan251055 41.23
148 Malich, Burkhard G251058 43.34
149 Marjanovic, Slavoljub250951 25.23
150 Tatai, Stefano250954 42.02
151 Velimirovic, Dragoljub250851 37.88
152 Christiansen, Larry M250652 23.76
153 Lukin, Andrei M250575 31.59
154 Bleiman, Yaacov250564 32.56
155 Petrushin, Alexander I250465 33.06
156 Hulak, Krunoslav250462 28.85
157 Kharitonov, Andrey Y250269 20.98
158 Schneider, Lars Ake250255
159 Vokác, Marek250158 21.32
160 Keene, Raymond250153
161 Sunye Neto, Jaime250054 22.91
162 García Gonzáles, Guillermo249953 26.31
163 Popov, Luben249957 44.18
164 Donner, Johannes H249755 52.73
165 Suba, Mihai249754 32.83
166 Zaltsman, Vitaly F249764 38.43
167 Bilek, István249660 47.64
168 van der Wiel, John T H249652 20.64
169 Sigurjónsson, Gudmundur249652 32.52
170 Ermenkov, Evgenij249653 30.51
171 Padevsky, Nikola B249657 46.84
172 Regan, Kenneth249562 20.55
173 Hecht, Hans-Joachim249465 41.17
174 Mariotti, Sergio249456 33.64
175 Kraidman, Yair249363 47.41
176 Jansson, Borje249367 38.05
177 Polovodin, Igor A249268 25.02
178 Marangunic, Srdjan249161 36.42
179 Diesen, Mark C249057
180 Zuckerman, Bernard248965 36.99
181 Ungureanu, Emil248867 43.41
182 Gavrikov, Victor N248862 22.67
183 Gaprindashvili, Nona248762 38.91
184 Minic, Dragoljub248771 43.07
185 Plachetka, Jan248749 35.12
186 Lputian, Smbat G248761 22.13
187 Grefe, John A248461 32.57
188 Inkiov, Ventzislav248457 23.87
189 Soltis, Andrew E248361 32.84
190 Popovic, Petar248357 21.13
191 Sturua, Zurab248265 20.81
192 Kirov Ivanov, Nino248252 34.56
193 Lechtynsky, Jiri248253 32.35
194 Barczay, Laszlo248252 44.11
195 Ghinda, Mihail Viorel248153 30.68
196 Wedberg, Tom248154 26.35
197 Mednis, Edmar J248055 43.02
198 Petkevich, Jusefs248063 39.28
199 Hermann, Manfred248075 37.58
200 Kaufman, Larry C248063 32.38
201 Rodriguez, Amador247956 23.56
202 Zilberstein, Valery I247967 36.96
203 Vladimirov, Evgeny Y247966 23.20
204 Cebalo, Mišo247872 35.15
205 Calvo Minguez, Ricardo247871 36.44
206 Forintos, Gyözö V247755 44.67
207 Vadasz, Laszlo247653 32.18
208 Jansa, Vlastimil247650 37.34
209 Langeweg, Kick247453 43.07
210 Marovic, Dražen247357 42.21
211 Ciocaltea, Victor247155 48.21
212 Hazai, Laszlo247056 26.80
213 Zaichik, Gennady L246962 23.14
214 Karner, Hillar246971 44.68
215 Jelen, Iztok246961 33.20
216 Commons, Kim S246967 28.69
217 Espig, Lutz246851 31.24
218 Bisguier, Arthur B246760 50.48
219 Ivanovic, Božidar246751 33.60
220 Sahovic, Dragutin246753 39.65
221 Mnatsakanian, Eduard A246763 41.32
222 Westerinen, Heikki MJ246554 35.92
223 Vooremaa, Andres246569 35.70
224 Ornstein, Axel246454 27.93
225 Qi Jingxuan246459 32.39
226 Ambroz, Jan246357 25.79
227 Prandstetter, Eduard246352 31.29
228 Hartston, William R246356 32.63
229 Piesina, Gintautas246369 27.97
230 Robatsch, Karl246357 51.46
231 Lukacs, Peter246352 29.73
232 Zapata, Alonso246261 21.61
233 Lengyel, Levente246153 46.80
234 Hamann, Svend246165 39.48
235 Damjanovic, Mato246057 53.02
236 Messing, Hrvoje246073 39.68
237 Rytov, Boris245968
238 Podzielny, Karl Heinz245973 25.56
239 Dobosz, Henryk245860 27.03
240 Poutiainen, Pertti245875
241 Van Wijgerden, Cornelis245756 29.86
242 Hennings, Artur245765 39.72
243 Hug, Werner245659 27.56
244 Musil, Vojko245666 34.62
245 Karaklajic, Nikola245670 54.10
246 Garcia, Raimundo245566 43.84
247 Jakobsen, Ole245457 37.45
248 Hernandez, Roman245454 30.36
249 Ligterink, Gert245450 30.37
250 Rajkovic, Dusan245356 37.79
251 Ghitescu, Theodor245355 46.19
252 Szekely, Peter245359 25.15
253 Raicevic, Vladimir245357 30.91
254 Bönsch, Uwe245252 21.46
255 Planinc, Albin245256 35.95
256 Szmetan, Jorge245254 29.85
257 Borik, Otto245162 32.52
258 Gutman, Lev245165 34.51
259 Lederman, Leon245168 32.85
260 Castro Rojas, Oscar Humberto245157 26.90
261 Řgaard, Leif244963 28.24
262 Rath, Ulrik244871 33.27
263 Sznapik, Aleksander244752 29.14
264 Plaskett, Jim244759 20.04
265 Meduna, Eduard244758 29.55
266 Hausner, Ivan244756 27.95
267 Rukavina, Josip244766 37.34
268 Debarnot, Roberto244661 32.65
269 Kuligowski, Adam244451 24.27
270 Georgiev, Krum244470 21.85
271 Adamski, Jan244351 36.39
272 Portisch, Ferenc244356 40.97
273 Matera, Salvatore Joseph244366
274 Makropoulos, Georgios244362 26.51
275 Spassov, Liuben244353 37.02
276 Horner, Jeff244374 30.60
277 Schweber, Samuel244258 43.71
278 Przewoznik, Jan244257 22.54
279 Pytel, Krzysztof244156 34.88
280 Mikenas, Vladas244072 69.95
281 Mochalov, Evgeny V244069 28.42
282 Rodriguez Vargas, Orestes243959 36.74
283 Gerusel, Mathias243961 42.15
284 Honfi, Karoly243964 49.43
285 Rubinetti, Jorge A243955 34.99
286 Pomar Salamanca, Arturo243866 48.58
287 Pétursson, Margeir243855 20.13
288 Karlsson, Lars243755 24.72
289 Bednarski, Jacek B243758 41.05
290 Trapl, Jindrich243757 38.02
291 Chiburdanidze, Maia G243755 19.20
292 Sisniega, Marcel243563 20.68
293 Strauss, David J243564 33.65
294 Zichichi, Alvise243362 41.74
295 Arnason, Jon L243354 19.38
296 Spiridonov, Nikola243354 42.09
297 Hansson, Dan243268 27.81
298 Schussler, Harry243252 22.77
299 Rodriguez, Ruben243261 33.32
300 Mestel, A Jonathan243252 23.05
301 Barle, Janez243157 28.03
302 Azmaiparashvili, Zurab A243169 20.04
303 Botterill, George Steven243157
304 Ostojic, Predrag243060 42.11
305 Liebert, Heinz242965 43.85
306 Pavlov, Mircea242959 42.55
307 Pribyl, Josef242951 32.47
308 Taulbut, Shaun M242959 22.22
309 Sydor, Andrzej242862 43.24
310 Groszpeter, Attila242855 19.81
311 Garcia Martinez, Silvino242754 35.74
312 Rohde, Michael A242765 20.60
313 Flesch, Janos242673 46.50
314 Minev, Nikolay N242663 49.23
315 Joksic, Sinisa242563 39.47
316 Grinberg, Ricardo242575 32.21
317 Duer, Arne242565 20.72
318 Klaric, Zlatko242466 23.44
319 Dely, Peter242467 45.74
320 Balinas, Rosendo Carrean242459
321 Bohm, Hans242451 30.21
322 Kunsztowicz, Uwe242469 36.20
323 Sloth, Jorn242370 35.57
324 Rocha, Antonio242368 35.80
325 Martinovic, Slobodan242257 34.68
326 Wirthensohn, Heinz242161 28.91
327 Djuric, Stefan242164 24.68
328 Kuijpers, Franciscus Antonius242064
329 Haygarth, Michael J241975
330 Ekstroem, Roland241973 23.86
331 Garcia, Gildardo241963 26.06
332 Tischbierek, Raj241958 17.52
333 Ostermeyer, Peter241869 36.47
334 Tompa, Janos241656 32.92
335 Webb, Simon241659 30.81
336 Watson, John L241661 28.57
337 Enklaar, Bertus F241663
338 Birnboim, Nathan241665 29.34
339 Ilic, Zoran241568 16.66
340 Brinck Claussen, Bjorn241559
341 Sideif Sade, Fikret I241371 28.25
342 Hase, Juan Carlos241362
343 Cvetkovic, Srdjan241261 34.09
344 Bielczyk, Jacek241255 27.11
345 Velikov, Petar241268 29.00
346 Hoelzl, Franz241255 33.98
347 Harandi, Khosro241160 29.58
348 Morris, Walter D241059 21.58
349 Dueckstein, Andreas241065 52.66
350 Littlewood, John Eric240969
351 Augustin, Josef240955 37.87
352 Nicevski, Risto240957 34.76
353 Ciric, Dragoljub M240862 44.38
354 Hoi, Carsten240855 23.21
355 Jamieson, Robert Murray240865
356 Janoševic, Dragoljub240759 56.73
357 Franco Ocampos, Zenon240757 23.88
358 Hartoch, Robert G240561
359 Fedorowicz, John P240553 21.51
360 Pritchett, Craig William240570
361 Cámpora, Daniel H240366 22.75
362 Swic, Waldemar240358 27.06
363 Vilela, Jose Luis240255 27.03
364 Wittmann, Walter240163 32.05
365 Kestler, Hans-Günter240169 40.30
366 Chandler, Murray G240154 19.98
367 Emma, Jaime J240157 42.20
368 Van der Sterren, Paul240152 24.04
369 Gruenberg, Hans Ulrich240165 24.23
370 De Bruycker, Bernard240073 38.79
371 Bradford, Joseph M240068 29.41
372 Van Riemsdijk, Herman C240053 31.60
373 Bellin, Robert239954 27.75
374 Goodman, David SC239961
375 Bouaziz, Slim239857 29.95
376 Deze, Anton239774
377 Cuartas, Carlos239762 39.63
378 Grigorov, Jordan N239764 26.31
379 Vaisman, Volodia239768 42.27
380 Pokojowczyk, Jerzy239654 31.11
381 Biriescu, Ioan239672 26.43
382 Segal, Alexandru Sorin239661 32.49
383 Garcia Padron, Jose239669 22.02
384 Law, Andrew P239666 29.73
385 Toth, Bela239558 36.94
386 Kojder, Konrad239568 24.21
387 Ionescu, Constantin239568 21.55
388 Bohosjan, Sarkis239560 39.01
389 Nogueiras, Jesus239570 20.70
390 Bronstein, Luis239456 33.83
391 Rakic, Tomislav239367 45.39
392 Despotovic, Momcilo239365 32.08
393 Benjamin, Joel L239360 16.05
394 Haik, Aldo239265 27.45
395 Skrobek, Ryszard239157 28.74
396 Formanek, Edward W239167 37.90
397 Taylor, Timothy239170 27.14
398 Franklin, Michael J239071 49.16
399 Moehring, Guenther239054 43.35
400 Lombard, Andre238966 29.53
401 Short, Nigel D238957 14.83
402 Foygel, Igor238972
403 Welin, Thomas238968 20.57
404 Huss, Andreas238974 29.46
405 Sibarevic, Milenko238861 35.05
406 Hebert, Jean238857 22.39
407 Wockenfuss, Klaus238874 28.59
408 Kagan, Shimon238754 37.98
409 Bellon Lopez, Juan Manuel238657 29.90
410 Fedder, Steen238659 28.80
411 Peev, Peicho Chonev238566 39.99
412 Kristiansen, Jens238556 27.85
413 Jacobsen, Bo238575 31.30
414 Holm, Sejer238472 40.64
415 Littlewood, Paul E238359 24.20
416 Odendahl, Steven M238358 20.43
417 Mascarinas, Rico238362 27.08
418 Bojkovic, Slobodan238275 34.68
419 Iskov, Gert238257 31.68
420 Szymczak, Zbigniew238161 28.24
421 Banas, Jan238154 32.83
422 Cappello, Renato238063
423 Adamski, Andrzej238063 41.22
424 Visier Segovia, Fernando238066 37.16
425 Ost Hansen, Jacob237974
426 Andre, Wolfgang237772 27.04
427 Lanka, Zigurds237769 19.86
428 Soos, Bela237670 50.07
429 Djukic, Zeljko237671 20.80
430 Meyer, E.237566
431 Cuasnicu, Oscar237466 37.44
432 Henley, Ron W237464 23.32
433 Szilágyi, György237475 58.74
434 Gonsior, Evzen237357 48.32
435 Van der Vliet, Fredrik237360
436 Cramling, Dan237369 21.15
437 Pavlovic, Dejan237271
438 Mišta, Ladislav237268 36.42
439 Paehtz, Thomas Sr237262 23.57
440 Garcia Palermo, Carlos237161 26.33
441 Olafsson, Helgi237157 23.63
442 deFirmian, Nicholas E236963 22.68
443 Jamroz, Zbigniew236963 45.80
444 Watzka, Horst236965 41.55
445 Schinzel, Wladyslaw236951 36.86
446 Rigo, Janos236857 31.43
447 Wilder, Michael236762 17.54
448 Rossetto, Héctor D236765 57.56
449 Coudari, Camille236765 28.67
450 Kaiszauri, Konstanty236655 27.43
451 Renman, Nils Gustaf236665
452 Horvath, Tamas236563 28.44
453 Neckar, Lubomir236465 29.66
454 Kengis, Edvins236473 20.96
455 Schellhorn, Wolfgang236376 31.61
456 Rajna, George236267 33.13
457 Filipowicz, Andrzej236264 41.88
458 Hebden, Mark236264 22.13
459 Niklasson, Christer236257 27.24
460 Lau, Ralf236165 20.45
461 Whiteley, Andrew J236165 32.81
462 Gross, Stefan235959 30.59
463 Helmers, Knut J235963 23.15
464 Mortensen, Erling235961 24.98
465 Sikora Lerch, Jan235854
466 Filguth, Rubens A235863 24.02
467 Basman, Michael J235765 34.04
468 Angantysson, Haukur235561 31.33
469 Balshan, Amikam235561
470 Kelecevic, Nedeljko235570 33.05
471 Root, Douglas235462 17.13
472 Rantanen, Yrjo A235363 29.93
473 Trois, Francisco RT235354
474 Nun, Jiri235267 22.68
475 Nikolic, Predrag235270 19.55
476 Fuller, Maxwell L235160 35.18
477 Maciejewski, Andrzej235063 28.73
478 Barreras, Alberto235064 28.98
479 Cooper, John Grantley234970
480 Wahlbom, Magnus234873 34.88
481 Day, Lawrence A234866 31.16
482 Ochoa de Echaguen, F Javier234875 25.57
483 Giffard, Nicolas234767 29.49
484 Lebredo, Gerardo234563 29.66
485 Gutierrez, Jose Antonio234460
486 Lekander, Rolf234465 33.25
487 Sapi, Laszlo234467 45.03
488 Frias, Victor J234266 24.14
489 Tomaszewski, Roman234263 19.87
490 Petran, Pal234256 33.54
491 Braga, Fernando234261 21.73
492 Orso, Miklos234159 23.81
493 Povah, Nigel E234059 27.70
494 Fernandez, Juan C234055 28.66
495 Tichy, Vladimir233970 33.50
496 Giardelli, Sergio C233961 24.76
497 Baljon, Christofoor233959 26.77
498 Borm, Franciscus WM233968
499 Ardiansyah, Haji233866 28.32
500 Ginsburg, Mark233769 21.01

These ratings, calculated as of March 31, 1980, incorporate all games (against rated opponents) played in the time between March 1, 1979 and March 31, 1980, along with the ratings that were already calculated as of February 28, 1979. 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, 1980. This represents the player's estimated strength on April 1, 1980.

+/- 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, 1980. The +/- value represents the standard deviation of that estimate; the player's true strength on April 1, 1980 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, 1980. 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, 1980. 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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