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Top 10 active players as of February 28, 1979


Top 500 active players as of February 28, 1979

  #  

Player Rating +/- Best? 75%? Age
1 Karpov, Anatoly E27864944.2% #327.76
2 Korchnoi, Viktor L27694928.7% #547.93
3 Tal, Mikhail2715495.2% #1542.30
4 Polugaevsky, Lev A2707503.9% #1744.27
5 Portisch, Lajos2701503.0% #2041.89
6 Spassky, Boris V2689501.8% #2542.08
7 Petrosian, Tigran V2684491.5% #2649.70
8 Tseshkovsky, Vitaly V2684491.3% #2734.43
9 Vaganian, Rafael A2673490.9% #3227.37
10 Kasparov, Garry K2672561.4% #3515.87
11 Larsen, Bent2672500.9% #3343.98
12 Balashov, Yury S2655500.4% #4329.95
13 Mecking, Henrique2653621.1% #5027.10
14 Timman, Jan H2651480.3% #4627.21
15 Vasiukov, Evgeny A2647550.4% #5145.97
16 Romanishin, Oleg M2647490.2% #4927.13
17 Smyslov, Vassily V2645500.2% #5057.92
18 Hort, Vlastimil2644480.1% #5035.13
19 Lerner, Konstantin Z2640570.4% #5828.99
20 Hübner, Robert2640500.1% #5530.31
21 Tukmakov, Vladimir B2639490.1% #5432.95
22 Gulko, Boris F2638490.1% #5532.05
23 Beliavsky, Alexander G2637490.1% #5625.20
24 Geller, Efim P2635500.1% #5853.98
25 Ljubojevic, Ljubomir2635500.1% #5828.32
26 Ribli, Zoltán2632500.1% #6027.48
27 Savon, Vladimir A2626520.1% #6638.42
28 Kurajica, Bojan2626560.2% #6831.29
29 Andersson, Ulf262448 #6527.67
30 Kholmov, Ratmir D2622540.1% #7053.79
31 Kavalek, Lubomir262151 #7035.55
32 Sveshnikov, Evgeny E261950 #7129.05
33 Ivanov, Igor V2619620.3% #7832.14
34 Dorfman, Iosif D261750 #7326.82
35 Krogius, Nikolay V2616710.7% #8748.60
36 Gheorghiu, Florin261650 #7434.89
37 Kuzmin, Gennady P261450 #7633.11
38 Parma, Bruno2610560.1% #8337.16
39 Chekhov, Valery A2607660.2% #9123.25
40 Bagirov, Vladimir K260751 #8242.53
41 Miles, Anthony J260548 #8323.84
42 Gufeld, Eduard E260555 #8742.94
43 Dvoretsky, Mark I2603590.1% #9131.22
44 Gligoric, Svetozar260150 #8756.07
45 Dzindzichashvili, Roman Y260051 #8934.81
46 Bronstein, David I259752 #9255.03
47 Kudriashov, Anatoly A2597700.3% #10336.86
48 Mikhalchishin, Adrian B259552 #9524.28
49 Rashkovsky, Nukhim N259555 #9632.86
50 Smejkal, Jan259451 #9432.93
51 Gipslis, Aivars259355 #9842.05
52 Kochiev, Alexander259150 #9622.92
53 Razuvaev, Yury S259052 #9833.38
54 Sosonko, Gennadi259049 #9735.78
55 Psakhis, Lev B259059 #10420.25
56 Sanguinetti, Raúl C2590640.1% #10746.07
57 Palatnik, Semen A2589610.1% #10528.92
58 Antoshin, Vladimir S2589680.1% #11049.79
59 Sax, Gyula258750 #10027.69
60 Tarjan, James E258653 #10427.02
61 Dolmatov, Sergey V258460 #11020.02
62 Unzicker, Wolfgang258355 #10753.67
63 Uhlmann, Wolfgang258349 #10343.91
64 Liberzon, Vladimir M258254 #10841.93
65 Panno, Oscar R257951 #10943.94
66 Tseitlin, Mikhail S257858 #11431.70
67 Makarichev, Sergey Y257753 #11225.28
68 Lein, Anatoly257552 #11347.91
69 Browne, Walter S257450 #11230.13
70 Alburt, Lev O257452 #11333.52
71 Kupreichik, Viktor D257354 #11529.65
72 Georgadze, Tamaz V257253 #11531.30
73 Timoshchenko, Gennady257253 #11629.83
74 Averbakh, Yury L2572710.1% #12857.05
75 Szabó, László257065 #12761.94
76 Zaitsev, Igor A256962 #12540.75
77 Tringov, Georgy P256859 #12441.97
78 Ivkov, Borislav256851 #12045.29
79 Knaak, Rainer F256751 #12025.94
80 Olafsson, Fridrik256652 #12244.09
81 Pfleger, Helmut256554 #12335.56
82 Zakharov, Alexander V2565660.1% #13135.39
83 Byrne, Robert E256351 #12350.85
84 Nemet, Ivan256362 #13035.87
85 Matanovic, Aleksandar256359 #12948.76
86 Marangunic, Srdjan256371 #13635.33
87 Darga, Klaus V256169 #13645.01
88 Grigorian, Karen A256156 #12831.47
89 Suetin, Alexey S256055 #12852.28
90 Taimanov, Mark E256054 #12953.06
91 Stean, Michael F256051 #12625.48
92 Csom, István255849 #12738.74
93 Jussupow, Artur M255656 #13319.04
94 Pachmann, Ludek255457 #13554.80
95 Panchenko, Alexander N255356 #13625.40
96 Rogoff, Kenneth S255156 #13825.93
97 Klovans, Janis254861 #14343.88
98 Ubilava, Elizbar E254867 #14728.50
99 Vokác, Marek2547740.1% #15120.23
100 Najdorf, Miguel254655 #14168.86
101 Matulovic, Milan254454 43.72
102 Platonov, Igor V254469 45.11
103 Bukic, Enver254456 41.24
104 Kapengut, Albert Z254258 34.65
105 Karasev, Vladimir I254275 40.70
106 Veingold, Aleksander254161 25.38
107 Díez del Corral, Jesús253963 45.89
108 Grefe, John A253766 31.48
109 Evans, Larry M253460 46.93
110 Filip, Miroslav253465 50.34
111 Petrushin, Alexander I253266 31.96
112 Nei, Iivo253257 47.33
113 Lombardy, William J253254 41.23
114 Shamkovich, Leonid A253155 55.74
115 Biyiasas, Peter253054 28.28
116 Vitolinš, Alvis252958 32.70
117 Vogt, Lothar H252850 27.11
118 Adorján, András252850 28.90
119 Knezevic, Milorad252753 42.33
120 Anikaev, Yury252764 30.66
121 Hulak, Krunoslav252558 27.76
122 Quinteros, Miguel A252550 31.17
123 Tseitlin, Mark D252575 35.43
124 Luczak, Andrzej252466 30.23
125 Velimirovic, Dragoljub252352 36.79
126 Nikolac, Juraj252353 46.84
127 Ree, Hans252349 34.45
128 Zhuravliov, Valerij252269 40.21
129 Ivanov, Alexander V252257 22.82
130 Radulov, Ivan252254 40.14
131 Sigurjónsson, Gudmundur252251 31.43
132 Hecht, Hans-Joachim251963 40.08
133 Weinstein, Norman251958 28.40
134 Peresipkin, Vladimir251959
135 Reshevsky, Samuel H251854 67.26
136 Yurtaev, Leonid251761 19.82
137 Piasetski, Leon David251763
138 Petrosian, Arshak B251660 25.20
139 Benko, Pal C251655 50.62
140 Gurgenidze, Bukhuti I251564 45.29
141 Schmidt, Wlodzimierz251452 35.88
142 Kovacevic, Vladimir251460 36.92
143 Faragó, Iván251249 32.90
144 Torre, Eugenio251151 27.32
145 Vukcevich, Milan R251173
146 Yuferov, Sergey N251168 33.23
147 Faibisovich, Vadim Z251067 34.80
148 Stoica, Valentin250960 29.04
149 Averkin, Orest N250965 35.01
150 Kakageldyev, Amanmurad250860 29.17
151 Lutikov, Anatoly S250857 46.06
152 Vukic, Milan250755 35.53
153 Malaniuk, Vladimir P250771 21.60
154 Bleiman, Yaacov250765 31.47
155 Kharitonov, Andrey Y250673 19.89
156 Malich, Burkhard G250453 42.25
157 García Gonzáles, Guillermo250255 25.22
158 Lukin, Andrei M250166 30.50
159 Gavrikov, Victor N250062 21.58
160 Ciocaltea, Victor250055 47.12
161 Nunn, John D M249854 23.84
162 Lengyel, Levente249856 45.71
163 Peters, John A249656 28.05
164 Bilek, István249668 46.55
165 Sanguinetti, Renato249670 62.84
166 Tatai, Stefano249554 40.93
167 Garcia Martinez, Silvino249557 34.65
168 Schweber, Samuel249472 42.62
169 Ftácnik, Lubomír249453 21.33
170 Donner, Johannes H249454 51.64
171 Gruenfeld, Yehuda249370 22.99
172 Keene, Raymond249353
173 Stanciu, Traian249172 43.46
174 Godes, Dmitry R249169 39.59
175 Regan, Kenneth249156 19.46
176 Jansa, Vlastimil249152 36.25
177 Prandstetter, Eduard248855 30.20
178 Soltis, Andrew E248859 31.75
179 Ghizdavu, Dumitru248671 29.77
180 Hartston, William R248652 31.54
181 Christiansen, Larry M248652 22.67
182 Diesen, Mark C248654
183 Suba, Mihai248652 31.74
184 Simic, Radoslav248668 30.72
185 Gaprindashvili, Nona248556 37.82
186 Rajkovic, Dusan248558 36.70
187 Ungureanu, Emil248460 42.32
188 Padevsky, Nikola B248458 45.75
189 Mariotti, Sergio248457 32.55
190 Lputian, Smbat G248461 21.04
191 Zuckerman, Bernard248359 35.90
192 Vadasz, Laszlo248353 31.09
193 Kaplan, Julio P248261 28.59
194 Kirov Ivanov, Nino248154 33.47
195 Mednis, Edmar J248155 41.93
196 Robatsch, Karl248056 50.37
197 Rodriguez, Amador248054 22.47
198 Balinas, Rosendo Carrean247866
199 Magerramov, Elmar S247867 20.88
200 Hermann, Manfred247769 36.49
201 Lechtynsky, Jiri247754 31.26
202 Pintér, József247655 25.30
203 Podgaets, Mikhail Y247674 31.60
204 Inkiov, Ventzislav247658 22.78
205 Schneider, Lars Ake247655
206 Gerusel, Mathias247564 41.06
207 Zilberstein, Valery I247560 35.87
208 Calvo Minguez, Ricardo247463 35.35
209 Sahovic, Dragutin247459 38.55
210 Marovic, Dražen247166 41.12
211 Ghinda, Mihail Viorel247154 29.59
212 Pribyl, Josef247054 31.38
213 Van Wijgerden, Cornelis247059 28.76
214 Barczay, Laszlo247051 43.02
215 Jakobsen, Ole247062 36.36
216 Kraidman, Yair247065 46.32
217 Szmetan, Jorge247054 28.76
218 Sofrevski, Jovan246968 43.53
219 Eingorn, Viacheslav S246775 22.26
220 Piesina, Gintautas246762 26.88
221 Nikolic, Zivoslav246671 25.21
222 Mestel, A Jonathan246652 21.95
223 Bisguier, Arthur B246661 49.39
224 Karner, Hillar246563 43.59
225 Commons, Kim S246560 27.60
226 Barle, Janez246461 26.93
227 Popov, Luben246455 43.08
228 Hernandez, Roman246455 29.26
229 Mnatsakanian, Eduard A246366 40.23
230 Forintos, Gyözö V246258 43.58
231 Lederman, Leon246168 31.76
232 Vooremaa, Andres246162 34.61
233 Westerinen, Heikki MJ245952 34.83
234 Hug, Werner245858 26.47
235 Sunye Neto, Jaime245855 21.82
236 Ermenkov, Evgenij245654 29.41
237 Szekely, Peter245657 24.05
238 Groszpeter, Attila245655 18.72
239 Messing, Hrvoje245665 38.59
240 Espig, Lutz245550 30.15
241 Rytov, Boris245561
242 Marjanovic, Slavoljub245554 24.14
243 Planinc, Albin245556 34.86
244 Hennings, Artur245567 38.63
245 Gutman, Lev245559 33.42
246 Spassov, Liuben245457 35.93
247 Ligterink, Gert245452 29.28
248 Poutiainen, Pertti245466
249 Clarke, Peter H245474
250 Gusev, Vladimir A245371
251 Horner, Jeff245275 29.51
252 Karaklajic, Nikola245262 53.01
253 Langeweg, Kick245153 41.97
254 Hazai, Laszlo245155 25.71
255 Martinovic, Slobodan245072 33.59
256 Atanasov, Petko245072 31.12
257 Qi Jingxuan245062 31.30
258 Rogulj, Branko244966 27.57
259 Wedberg, Tom244960 25.26
260 Cuéllar Gacharná, Miguel244970 62.28
261 Antunac, Goran244773 33.86
262 Minic, Dragoljub244774 41.97
263 Estrin, Yacov B244775 55.85
264 Haag, Ervin244775 46.13
265 Kuligowski, Adam244755 23.18
266 Ghitescu, Theodor244654 45.09
267 Zapata, Alonso244663 20.52
268 Plachetka, Jan244552 34.03
269 Vladimirov, Evgeny Y244564 22.11
270 Řgaard, Leif244557 27.15
271 Bertok, Mario244474 49.49
272 Speelman, Jonathan S244454 22.40
273 Raicevic, Vladimir244458 29.82
274 Malevinsky, Alexander A244473 29.01
275 Rath, Ulrik244463 32.18
276 Matera, Salvatore Joseph244364
277 Rukavina, Josip244359 36.25
278 Kozlov, V.244271
279 Garcia, Raimundo244068 42.75
280 Castro Rojas, Oscar Humberto244055 25.80
281 Kuijpers, Franciscus Antonius244069
282 Bohm, Hans243952 29.12
283 Seirawan, Yasser243764 18.92
284 Mikenas, Vladas243663 68.86
285 Hamann, Svend243663 38.39
286 Cebalo, Mišo243676 34.06
287 Portisch, Ferenc243554 39.88
288 Barcza, Gedeon243472 67.52
289 Pomar Salamanca, Arturo243459 47.49
290 Zaichik, Gennady L243460 22.05
291 Todorcevic, Miodrag243367 38.30
292 Lukacs, Peter243351 28.64
293 Sydor, Andrzej243371 42.15
294 Georgiev, Krum243371 20.76
295 Rubinetti, Jorge A243364 33.90
296 Toth, Bela243271 35.85
297 Popov, Nikolay243267
298 Ivanovic, Božidar243253 32.51
299 Damjanovic, Mato243156 51.93
300 Minev, Nikolay N243163 48.14
301 Pokojowczyk, Jerzy243055 30.02
302 Bohosjan, Sarkis243067 37.91
303 Janoševic, Dragoljub242957 55.64
304 Wirthensohn, Heinz242858 27.82
305 Garcia, Gildardo242857 24.96
306 Ornstein, Axel242855 26.84
307 Hoi, Carsten242758 22.12
308 Eolian, Levon S242673 19.45
309 Partos, Charles242668 42.55
310 Donoso Velasco, Pedro H242667 35.01
311 Liebert, Heinz242559 42.76
312 Sloth, Jorn242565 34.48
313 Mestrovic, Zvonimir242568 34.36
314 Meduna, Eduard242556 28.46
315 Skrobek, Ryszard242455 27.65
316 Williams, Arthur Howard242468
317 Kagan, Shimon242355 36.89
318 Flesch, Janos242264 45.41
319 Bönsch, Uwe242253 20.37
320 Kristiansen, Jens242256 26.76
321 Brasket, Curt Justin242167
322 Grinberg, Ricardo242166 31.12
323 Kosikov, Alexey I242072 30.01
324 Popovic, Petar242065 20.04
325 Dely, Peter242060 44.65
326 Cvetkovic, Srdjan242062 32.99
327 Djuric, Stefan242062 23.59
328 Goodman, David SC242068
329 Kaiumov, Dmitry D241974 29.99
330 Adamski, Jan241951 35.30
331 Rocha, Antonio241961 34.71
332 Hase, Juan Carlos241861
333 Doda, Zbigniew241865 48.02
334 Rohde, Michael A241861 19.51
335 Pytel, Krzysztof241763 33.79
336 Sideif Sade, Fikret I241763 27.16
337 Emma, Jaime J241761 41.11
338 Velikov, Petar241765 27.91
339 Enklaar, Bertus F241772
340 Bronstein, Luis241559 32.74
341 Honfi, Karoly241559 48.34
342 Hausner, Ivan241560 26.86
343 Ruderfer, Mark B241475
344 Augustin, Josef241354 36.78
345 Webb, Simon241355 29.72
346 Rossetto, Héctor D241368 56.47
347 Ostojic, Predrag241259 41.02
348 Bednarski, Jacek B241256 39.95
349 Schussler, Harry241162 21.68
350 Spiridonov, Nikola241158 40.99
351 Krnic, Zdenko240971 31.40
352 Brinck Claussen, Bjorn240964
353 Kestler, Hans-Günter240864 39.21
354 Rodriguez Vargas, Orestes240859 35.65
355 Sznapik, Aleksander240751 28.05
356 Taulbut, Shaun M240755 21.13
357 Mascarinas, Rico240759 25.98
358 Jelen, Iztok240772 32.11
359 Zichichi, Alvise240675 40.65
360 Ostermeyer, Peter240473 35.38
361 Bellin, Robert240458 26.66
362 Hoelzl, Franz240371 32.89
363 Iskov, Gert240365 30.58
364 Vilela, Jose Luis240357 25.94
365 Eslon, Jaan240274 26.98
366 Nicevski, Risto240064 33.67
367 Biriescu, Ioan240064 25.34
368 Debarnot, Roberto240062 31.56
369 Trapl, Jindrich239966 36.92
370 Chiburdanidze, Maia G239955 18.11
371 Kolarov, Atanas S239975 44.98
372 Franklin, Michael J239869 48.07
373 Butnorius, Algimantas239871 32.27
374 Wockenfuss, Klaus239870 27.50
375 Gofshtein, Leonid D239867 25.85
376 Ilievski, Dimitar239767 37.51
377 Joksic, Sinisa239766 38.38
378 Bukal, Vladimir Sr239768 39.32
379 Dobosz, Henryk239663 25.93
380 Zilberman, Nathan R239672 38.82
381 Taylor, Timothy239562 26.05
382 Cuartas, Carlos239463 38.54
383 Soos, Bela239466 48.97
384 Formanek, Edward W239461 36.81
385 Pohla, Harry239470 38.65
386 Deze, Anton239365
387 Vaisman, Volodia239361 41.18
388 Pritchett, Craig William239365
389 Huss, Andreas239365 28.37
390 Nogueiras, Jesus239264 19.61
391 Rigo, Janos239258 30.33
392 Segal, Alexandru Sorin239255 31.40
393 Garcia Padron, Jose239261 20.93
394 Pétursson, Margeir239257 19.04
395 Hartoch, Robert G239156
396 Filipowicz, Andrzej239063 40.79
397 Banas, Jan239056 31.73
398 Dzuban, Oleg I238975
399 Ervin, Roy C238971 28.15
400 Andre, Wolfgang238966 25.94
401 Tompa, Janos238856 31.83
402 Cuasnicu, Oscar238775 36.34
403 Bellon Lopez, Juan Manuel238752 28.80
404 Bojkovic, Slobodan238666 33.59
405 Lombard, Andre238659 28.44
406 Witkowski, Stefan238558 47.42
407 Swic, Waldemar238559 25.96
408 Zwaig, Arne238468
409 Franco Ocampos, Zenon238365 22.79
410 Sikora Lerch, Jan238255
411 Basman, Michael J238264 32.94
412 Spacek, Petr238272 25.01
413 Jamieson, Robert Murray238266
414 Whiteley, Andrew J238162 31.72
415 Peev, Peicho Chonev238159 38.90
416 Botterill, George Steven237955
417 Harandi, Khosro237974 28.49
418 Hesse, Peter237960 34.41
419 Borngaesser, Rene237868 27.43
420 Neckar, Lubomir237861 28.57
421 Ambroz, Jan237867 24.69
422 Fedorowicz, John P237760 20.42
423 Kozma, Julius237775 49.74
424 Merdinjan, Agop237773 29.81
425 Taruffi, Daniele237674 20.48
426 Buljovcic, Ivan237667 42.17
427 Visier Segovia, Fernando237659 36.07
428 Grigorov, Jordan N237572 25.22
429 Littlewood, Paul E237563 23.11
430 Kaiszauri, Konstanty237559 26.34
431 Garcia, Luis E237469
432 Korsunsky, Rostislav R237473
433 Littlewood, John Eric237472
434 Hebert, Jean237465 21.30
435 Silva, Fernando237474 28.57
436 Kataev, V.237276
437 Wahlbom, Magnus237272 33.79
438 Van Riemsdijk, Herman C237155 30.51
439 Sisniega, Marcel237171 19.58
440 Kostro, Jerzy237170 42.09
441 Szilágyi, György237066 57.65
442 Szymczak, Zbigniew237069 27.15
443 Schinzel, Wladyslaw236862 35.77
444 Mortensen, Erling236868 23.89
445 Gasic, Bozidar236873 41.38
446 Helmers, Knut J236859 22.06
447 Rajna, George236762 32.04
448 Haik, Aldo236761 26.36
449 van der Wiel, John T H236766 19.55
450 Orso, Miklos236760 22.72
451 Law, Andrew P236765 28.64
452 Balshan, Amikam236658
453 Horvath, Tamas236559 27.35
454 Tisdall, Jonathan D236470 20.51
455 Baljon, Christofoor236458 25.68
456 Povah, Nigel E236464 26.61
457 Cámpora, Daniel H236365 21.66
458 Akvist, Hakan236370 37.34
459 Anelli, Antonio236370 34.80
460 Van der Vliet, Fredrik236160
461 Kovacs, Laszlo M236157 40.40
462 Tischbierek, Raj236067 16.43
463 Lanc, Alois235974 31.03
464 Cappello, Renato235967
465 Fedder, Steen235965 27.71
466 Sarapu, Ortvin235869 55.11
467 Mihaljcisin, Mihajlo235869 46.02
468 Bielczyk, Jacek235757 26.01
469 Olafsson, Helgi235657 22.54
470 Maciejewski, Andrzej235575 27.64
471 Petran, Pal235558 32.45
472 Birnboim, Nathan235568 28.25
473 Bouaziz, Slim235571 28.86
474 Plaskett, Jim235569 18.94
475 Arnason, Jon L235460 18.29
476 Steiner, Drako235471
477 Filguth, Rubens A235456 22.92
478 Bjelajac, Milan235371 30.95
479 Garcia Palermo, Carlos235258 25.24
480 Van der Sterren, Paul235254 22.94
481 Kirpichnikov, Vladimir S235274
482 Duric, Slavko235276 24.77
483 Ochoa de Echaguen, F Javier235266 24.48
484 Lau, Ralf235163 19.36
485 Moehring, Guenther235155 42.26
486 Heuer, Valter235070 50.62
487 Niklasson, Christer235065 26.15
488 Borm, Franciscus WM235061
489 Krivonosov, Oleg234973 17.80
490 Mishuchkov, Nikolai M234873 32.99
491 Rantanen, Yrjo A234758 28.84
492 Estevez Morales, Guillermo234564
493 Cooper, John Grantley234466
494 Hess, Ralf234371 34.91
495 Tichy, Vladimir234362 32.41
496 Giffard, Nicolas234271 28.40
497 Frias, Victor J234165 23.05
498 Fichtl, Jirí234174 58.03
499 Lebredo, Gerardo234157 28.57
500 Danner, Georg234067 32.34

These ratings, calculated as of February 28, 1979, incorporate all games (against rated opponents) played in the time between March 1, 1978 and February 28, 1979, along with the ratings that were already calculated as of February 28, 1978. 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 February 28, 1979. This represents the player's estimated strength on March 1, 1979.

+/- 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 March 1, 1979. The +/- value represents the standard deviation of that estimate; the player's true strength on March 1, 1979 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 March 1, 1979. 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 February 28, 1979. 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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