< October 31, 1973     Back to date list    February 28, 1974 >

Top 10 active players as of December 31, 1973

  #  

Player Rating +/-
1 Fischer, Robert J289756
2 Karpov, Anatoly E274649
3 Korchnoi, Viktor L273249
4 Portisch, Lajos271049
5 Spassky, Boris V270349
6 Petrosian, Tigran V270149
7 Polugaevsky, Lev A269949
8 Tal, Mikhail269248
9 Geller, Efim P268850
10 Hübner, Robert267652

About these ratings

Top 500 active players as of December 31, 1973

  #  

Player Rating +/- Best? 75%? Age
1 Fischer, Robert J28975695.1% #130.81
2 Karpov, Anatoly E2746491.7% #822.61
3 Korchnoi, Viktor L2732491.1% #1042.77
4 Portisch, Lajos2710490.4% #1436.74
5 Spassky, Boris V2703490.3% #1636.91
6 Petrosian, Tigran V2701490.3% #1744.54
7 Polugaevsky, Lev A2699490.2% #1839.11
8 Tal, Mikhail2692480.1% #2037.14
9 Geller, Efim P2688500.1% #2148.83
10 Hübner, Robert2676520.1% #2625.15
11 Byrne, Robert E2675540.2% #2745.70
12 Larsen, Bent2673500.1% #2738.82
13 Smyslov, Vassily V265650 #3452.77
14 Furman, Semen A264553 #4153.08
15 Dvoretsky, Mark I264055 #4526.06
16 Tukmakov, Vladimir B263550 #4627.79
17 Kuzmin, Gennady P263351 #4827.94
18 Smejkal, Jan263348 #4727.77
19 Mecking, Henrique263355 #4921.93
20 Krogius, Nikolay V263258 #5143.44
21 Savon, Vladimir A263050 #4933.26
22 Keres, Paul263050 #4957.98
23 Hort, Vlastimil262947 #4829.96
24 Grefe, John A262767 #5826.32
25 Kavalek, Lubomir262349 #5430.39
26 Gligoric, Svetozar262149 #5550.91
27 Olafsson, Fridrik261860 #6138.92
28 Vasiukov, Evgeny A261751 #5740.82
29 Lein, Anatoly261355 #6342.76
30 Suetin, Alexey S261353 #6147.12
31 Gipslis, Aivars261256 #6436.89
32 Averbakh, Yury L261060 #6751.89
33 Taimanov, Mark E260851 #6447.89
34 Balashov, Yury S260850 #6424.80
35 Ljubojevic, Ljubomir260848 #6323.16
36 Schmid, Lothar M260660 #7045.64
37 Bronstein, David I260650 #6649.86
38 Vaganian, Rafael A260152 #7022.21
39 Uhlmann, Wolfgang260049 #7038.76
40 Panno, Oscar R259650 #7338.79
41 Kholmov, Ratmir D259551 #7448.63
42 Szabó, László259549 #7356.78
43 Gufeld, Eduard E259353 #7737.78
44 Reshevsky, Samuel H259152 #7862.10
45 Andersson, Ulf259047 #7622.51
46 Browne, Walter S258851 #7924.97
47 Sanguinetti, Raúl C258863 #8540.90
48 Dzindzichashvili, Roman Y258856 #8129.65
49 Liberzon, Vladimir M258761 #8536.77
50 Gheorghiu, Florin258649 #8029.73
51 Unzicker, Wolfgang258456 #8648.51
52 Grigorian, Karen A258156 #8826.32
53 Averkin, Orest N257960 #9129.84
54 Tseshkovsky, Vitaly V257957 #9029.27
55 Benko, Pal C257850 #8745.46
56 Nezhmetdinov, Rashid G257174 #10761.04
57 Ivkov, Borislav256948 #9340.13
58 Darga, Klaus V256858 #10039.85
59 Pachmann, Ludek256761 #10249.64
60 Najdorf, Miguel256652 #9863.71
61 Planinc, Albin256550 #9829.70
62 Matulovic, Milan256451 #9938.56
63 Nei, Iivo256160 #10742.17
64 Ribli, Zoltán256049 #10222.32
65 Razuvaev, Yury S255853 #10528.22
66 Kudriashov, Anatoly A255875 #11931.70
67 Klovans, Janis255859 #11038.73
68 Mukhin, Mikhail A255654 #10925.86
69 Csom, István255549 #10633.58
70 Parma, Bruno255550 #10632.00
71 Lutikov, Anatoly S255556 #11040.90
72 Evans, Larry M255458 #11241.77
73 Podgaets, Mikhail Y255456 #11126.44
74 Lombardy, William J255359 #11436.07
75 Velimirovic, Dragoljub255052 #11331.63
76 Zhidkov, Valery S254861 #11934.32
77 Platonov, Igor V254860 #11939.95
78 Filip, Miroslav254455 #12045.18
79 Matanovic, Aleksandar254252 #11843.61
80 Bagirov, Vladimir K254256 #12137.37
81 Hecht, Hans-Joachim254149 #11834.92
82 Pfleger, Helmut254055 #12230.40
83 Kapengut, Albert Z253955 #12429.49
84 Gurgenidze, Bukhuti I253963 #12940.13
85 Adorján, András253949 #12023.75
86 Gulko, Boris F253873 #13426.89
87 Ciric, Dragoljub M253266 #13638.13
88 Timman, Jan H253248 #12622.05
89 Kupreichik, Viktor D253164 #13724.49
90 Díez del Corral, Jesús253056 #13240.73
91 Commons, Kim S253065 #13722.44
92 Zaitsev, Igor A252864 #13835.59
93 Karasev, Vladimir I252664 #14135.54
94 Donner, Johannes H252549 #13246.48
95 Murey, Yakov252470 #14632.41
96 Bilek, István252349 #13341.39
97 Antoshin, Vladimir S252356 #13844.63
98 Romanishin, Oleg M252265 #14421.97
99 Karner, Hillar252159 #14038.43
100 Kurajica, Bojan252153 #13726.13
101 Kovacevic, Vladimir252159 31.76
102 Osnos, Viacheslav V252160 38.44
103 Radulov, Ivan252150 34.98
104 Quinteros, Miguel A251749 26.01
105 Jansa, Vlastimil251750 31.09
106 Sveshnikov, Evgeny E251458 23.88
107 Marovic, Dražen251352 35.96
108 Kraidman, Yair251257 41.16
109 Anikaev, Yury251269 25.51
110 Rogoff, Kenneth S251264 20.77
111 Palatnik, Semen A251161 23.76
112 Beliavsky, Alexander G250857 20.04
113 Shamkovich, Leonid A250857 50.58
114 Rashkovsky, Nukhim N250755 27.70
115 Bukic, Enver250458 36.08
116 Nikolaevsky, Yuri V250471
117 Schmidt, Wlodzimierz250350 30.72
118 Malich, Burkhard G250251 37.09
119 Tringov, Georgy P250253 36.82
120 Bobotsov, Milko G250155 42.25
121 Tarjan, James E250164 21.85
122 Hartston, William R250153 26.38
123 Zilberstein, Valery I249956 30.72
124 Sosonko, Gennadi249856 30.62
125 Minic, Dragoljub249752 36.82
126 O'Kelly de Galway, Albéric249759 62.62
127 Forintos, Gyözö V249750 38.42
128 Antunac, Goran249463 28.71
129 Tseitlin, Mark D249464 30.27
130 De Fotis, Gregory249368 22.06
131 Suttles, Duncan249154 28.03
132 Karaklajic, Nikola249060 47.85
133 Keene, Raymond248550
134 Soltis, Andrew E248563 26.59
135 Ciocaltea, Victor248450 41.95
136 Hamann, Svend248458 33.23
137 Dueball, Juergen248155 28.76
138 Teschner, Rudolf248174 51.87
139 Lengyel, Levente248051 40.55
140 Maric, Rudolf247972 46.63
141 Sax, Gyula247850 22.54
142 Mikenas, Vladas247774 63.70
143 Georgadze, Tamaz V247761 26.14
144 Popov, Luben247754 37.92
145 Ghitescu, Theodor247653 39.93
146 Gerusel, Mathias247655 35.90
147 Enklaar, Bertus F247651
148 Buljovcic, Ivan247567 37.01
149 Barczay, Laszlo247559 37.85
150 Sigurjónsson, Gudmundur247362 26.27
151 Schweber, Samuel247355 37.46
152 Barcza, Gedeon247359 62.36
153 Ghizdavu, Dumitru247358 24.61
154 Pribyl, Josef247151 26.22
155 Tatai, Stefano247150 35.77
156 Padevsky, Nikola B247056 40.59
157 Pomar Salamanca, Arturo247051 42.33
158 Shereshevsky, Mikhail I247076 23.69
159 Nemet, Ivan246968 30.71
160 Estrin, Yacov B246964 50.69
161 Byrne, Donald246761 43.55
162 Yanofsky, Daniel A246761 48.76
163 Kuindzhi, Alexander246661
164 Pilnik, Herman246555 59.97
165 Rukavina, Josip246452 31.09
166 Rossetto, Héctor D246453 51.31
167 Dely, Peter246356 39.49
168 Kaplan, Julio P246255 23.43
169 Calvo Minguez, Ricardo246253 30.19
170 Robatsch, Karl246157 45.21
171 Johannessen, Svein246066 36.20
172 Alburt, Lev O246064 28.36
173 Spiridonov, Nikola246057 35.84
174 Zuckerman, Bernard246062 30.75
175 Damjanovic, Mato245952 46.77
176 Minev, Nikolay N245958 42.97
177 Ree, Hans245749 29.29
178 Espig, Lutz245753 24.98
179 Mišta, Ladislav245667 30.17
180 Cortlever, Nicolaas245565 58.55
181 Torre, Eugenio245551 22.16
182 Zuidema, Coenraad245454
183 Rytov, Boris245462
184 Doroshkievich, Vladimir K245467 36.01
185 Hernandez, Roman245370 24.11
186 Moe, Mogens245375 29.80
187 Bogdanovic, Rajko245364 42.13
188 Torán Albero, Román245265 42.23
189 Cosulich, Roberto245262
190 Zhuravliov, Valerij245174 35.05
191 Bertok, Mario245166 44.33
192 Vranesic, Zvonko245069 35.24
193 Jansson, Borje244859 31.80
194 Williams, Arthur Howard244859
195 Sofrevski, Jovan244761 38.37
196 Hug, Werner244751 21.31
197 Basagic, Zlatko244773 26.04
198 Knezevic, Milorad244560 37.17
199 Messing, Hrvoje244464 33.43
200 Kuijpers, Franciscus Antonius244462
201 Ornstein, Axel244361 21.69
202 Hennings, Artur244351 33.47
203 Nikolic, Stanimir244175 38.92
204 Faragó, Iván244057 27.75
205 Weinstein, Norman244072 23.24
206 Mariotti, Sergio243960 27.39
207 Lehmann, Heinz Dr243959
208 Cvetkovic, Srdjan243966 27.84
209 Stanciu, Traian243872 38.30
210 Saidy, Anthony F243751 36.62
211 Bisguier, Arthur B243755 44.23
212 Rossolimo, Nicolas243767 63.84
213 Bednarski, Jacek B243651 34.80
214 Miles, Anthony J243558 18.69
215 Mednis, Edmar J243458 36.77
216 Garcia, Raimundo243453 37.59
217 Langeweg, Kick243450 36.82
218 Vooremaa, Andres243372 29.45
219 Penrose, Jonathan243359 40.23
220 Kirov Ivanov, Nino243266 28.31
221 Hase, Juan Carlos243257
222 Brinck Claussen, Bjorn243173
223 Dueckstein, Andreas243067 46.41
224 Rodriguez Vargas, Orestes242955 30.49
225 Biyiasas, Peter242956 23.12
226 Sliwa, Bogdan242972 51.90
227 Sahovic, Dragutin242970 33.40
228 Makarichev, Sergey Y242860 20.12
229 Rakic, Tomislav242875 39.14
230 Lukin, Andrei M242875 25.34
231 Haag, Ervin242864 40.96
232 Botterill, George Steven242761
233 Honfi, Karoly242654 43.18
234 Kozma, Julius242667 44.58
235 Liebert, Heinz242553 37.60
236 Janoševic, Dragoljub242553 50.48
237 Peretz, Malkiel242461 30.56
238 Ek, Hans242362 45.23
239 Plachetka, Jan242353 28.86
240 Capelan, Guenter242363 41.43
241 Krnic, Zdenko242263 26.25
242 Jakobsen, Ole242156 31.20
243 Vukic, Milan242157 30.37
244 Amos, Bruce M242174 27.00
245 Westerinen, Heikki MJ242051 29.68
246 Geller, Uzi242073 42.92
247 Kestler, Hans-Günter241959 34.05
248 Ostojic, Predrag241855 35.85
249 Foguelman, Alberto241869 50.22
250 Stean, Michael F241854 20.32
251 Kaldor, Avraham241761 26.61
252 Kolarov, Atanas S241668 39.83
253 McKay, Roderick M241666 21.88
254 Szmetan, Jorge241656 23.60
255 Suess, Alois241662 30.56
256 Kosanski, Stanko241473 32.20
257 Schiffer, Karl Josef241375
258 Blau, Max241373 55.03
259 Nowak, Erwin241373
260 Debarnot, Roberto241256 26.40
261 Toth, Bela241256 30.70
262 Soos, Bela241264 43.82
263 Siaperas, Triantafyllos241167 41.41
264 Ujtumen, Tudev240963 34.34
265 Scholl, Eddie C240755 29.20
266 Cuasnicu, Oscar240660 31.19
267 Doda, Zbigniew240652 42.85
268 Ungureanu, Emil240661 37.16
269 Eising, Johannes240659 38.59
270 Drimer, Dolfi240572 39.21
271 Cobo Arteaga, Eldis240557
272 Estevez Morales, Guillermo240454
273 Myagmarsuren, Lhamsuren240462 35.87
274 Campos Lopez, Mario240459 30.63
275 Spassov, Liuben240463 30.77
276 Christoph, Manfred240467 42.59
277 Clarke, Peter H240468
278 Schauwecker, Meinrad240367 22.79
279 Friedman, Shmuel240362
280 Jiménez Zerquera, Eleazar240266 45.52
281 Nicevski, Risto240257 28.51
282 Pytel, Krzysztof240251 28.63
283 Porat, Yosef240164 64.57
284 Flesch, Janos240070 40.25
285 Filipowicz, Andrzej239954 35.63
286 Boey, Josef239875 39.62
287 Gilden, Lawrence C239769
288 Andersen, Borge239774 39.78
289 Pritchett, Craig William239762
290 Haygarth, Michael J239772
291 Czerniak, Moshe239558 63.90
292 Shabanov, Yury F239573 36.14
293 Chellstorp, Craig V239565
294 Zwaig, Arne239565
295 Rubinetti, Jorge A239553 28.75
296 Gaprindashvili, Nona239566 32.66
297 Martz, William E239456
298 Adamski, Jan239454 30.14
299 Cuéllar Gacharná, Miguel239358 57.12
300 Portisch, Ferenc239263 34.73
301 van Scheltinga, Tjeerd D239057 59.82
302 Kupka, Slavoj238765 31.48
303 Belmonte, Juan S238771
304 Bukal, Vladimir Sr238763 34.16
305 Lekander, Rolf238669 26.99
306 Uddenfeldt, Dan238672 22.76
307 Rajkovic, Dusan238661 31.54
308 Lechtynsky, Jiri238558 26.10
309 Kristiansen, Erling238564 37.04
310 Bohosjan, Sarkis238460 32.76
311 Tompa, Janos238369 26.67
312 Rocha, Antonio238275 29.55
313 Karklins, Andrew238263 26.71
314 Sydor, Andrzej238156 36.99
315 Markland, Peter R238053 22.72
316 Bellin, Robert238057 21.50
317 Partos, Charles237965 37.39
318 Ivanovic, Božidar237963 27.35
319 Řgaard, Leif237860 21.98
320 Kunsztowicz, Uwe237858 29.95
321 Pavlov, Mircea237767 36.30
322 Kinnmark, Ove237664 29.02
323 Mititelu, Gheorghe237567 39.17
324 Hartoch, Robert G237551
325 Ermenkov, Evgenij237457 24.26
326 Ekenberg, Bengt237470
327 Trapl, Jindrich237470 31.77
328 Mestrovic, Zvonimir237472 29.20
329 Vujacic, Borivoje237467 24.30
330 Lundin, Erik237471 69.50
331 Kagan, Shimon237457 31.73
332 Kostro, Jerzy237352 36.93
333 Deze, Anton237261
334 Belkadi, Ridha237275 48.68
335 Pelikán, Jorge237159 67.69
336 Saren, Ilkka J237165 33.62
337 Knaak, Rainer F237154 20.79
338 Jankovec, Ivan237171 35.20
339 Liljedahl, Lennart237058 26.34
340 Peev, Peicho Chonev236857 33.75
341 Kovacs, Laszlo M236765 35.24
342 Balcerowski, Witold236765 38.39
343 Schoeneberg, Manfred236758 27.48
344 Puc, Stojan236661 52.73
345 Corden, Martyn J236674
346 Basman, Michael J236660 27.79
347 García Gonzáles, Guillermo236561 20.06
348 Wade, Robert Graham236556
349 Pedersen, Karl236471 33.26
350 Naranja, Renato236459 33.27
351 Wright, Daniel236374
352 Pietrusiak, Bogdan236360 40.46
353 Betancort Curbelo, Juan236271 31.38
354 Sloth, Jorn236269 29.32
355 Poulsson, Eivind236269 31.07
356 Kluger, Guyla236169 59.95
357 Webb, Simon236164 24.56
358 Witkowski, Stefan236174 42.26
359 Bhend, Edwin236169 42.31
360 Cuartas, Carlos236163 33.38
361 Vadasz, Laszlo236059 25.92
362 Olsson, Ake236066 39.66
363 Polgar, Istvan235961 29.10
364 Fichtl, Jirí235959 52.87
365 Garcia Martinez, Silvino235852 29.49
366 Masic, Ljubomir235860 37.49
367 Akvist, Hakan235863 32.18
368 Whiteley, Andrew J235562 26.56
369 Denker, Arnold S235566 59.85
370 Eley, Brian235458
371 Zinn, Lothar235356 35.78
372 Barle, Janez235362 21.78
373 Quinones, Oscar Carillo235269
374 Vogt, Lothar H235253 21.95
375 Hohler, Peter235263 32.72
376 Gasiorowski, Ryszard235269 38.05
377 Holm, Sejer235160 34.39
378 Harandi, Khosro235173 23.33
379 Emma, Jaime J235059 35.95
380 Hazai, Laszlo235065 20.55
381 Jacobsen, Bo235065 25.05
382 Jongsma, Alexander234867 35.58
383 Schaufelberger, Heinz234862 26.12
384 Gasic, Bozidar234868 36.22
385 Bellon Lopez, Juan Manuel234854 23.65
386 Brond, Victor234670
387 Wirthensohn, Heinz234661 22.66
388 Zoltek, Tadeusz234564 36.33
389 Baumbach, Friedrich234561 38.31
390 Kristiansen, Jens234470 21.60
391 Pedersen, Eigil234472
392 Hlousek, Zdenek234372
393 Fridh, Anton234168 54.03
394 Van Riemsdijk, Herman C234159 25.35
395 Krabbe, Tim234073 30.72
396 Mestel, A Jonathan233961 16.80
397 Visier Segovia, Fernando233960 30.90
398 Medina García, Antonio A233952 54.25
399 Kushnir, Alla233961
400 Romm, Meir233864 34.52
401 Pustina, Ylvi233871
402 Roehrl, Karl233874 32.96
403 De Greif, Boris233769 43.88
404 Kaufman, Larry C233667 26.13
405 Kupper, Josef233675 41.81
406 Szilágyi, György233462 52.49
407 Grabczewski, Romuald233459 41.89
408 Mikhalchishin, Adrian B233376 19.12
409 Sumiacher, Carlos233367
410 Cafferty, Bernard233260 39.51
411 Nordstrom, Felix233167 29.57
412 Moehring, Guenther233162 37.10
413 Korensky, Valeri S233163
414 Troianescu, Octav233069 57.90
415 Domnitz, Zadok233063 40.21
416 Palermo, Vicente233065 41.80
417 Cibulka, Vladimir232762 32.16
418 Rebizzo, Cayetano232768 65.40
419 Maciejewski, Andrzej232758 22.48
420 Van Baarle, C John232662 28.70
421 Sznapik, Aleksander232655 22.88
422 Friedgood, David232672 27.47
423 Serwinski, Benedykt232572
424 Camara, Helder232557 36.89
425 Banas, Jan232556 26.58
426 Van Geet, Dirk Daniel232565 41.83
427 Garcia, Horacio232571
428 Gereben, Ernö232562 66.54
429 Levy, David Neil Lawrence232361
430 Poch, Cesar Guillermo232261
431 Carvalho, Herbert Abreu232265 19.25
432 Nagy, Ervin232262 28.42
433 Reicher, Emanoil232064 43.76
434 Casas, Fernando231861 47.36
435 Franzen, Jozef231667 27.90
436 Helmertz, Per Inge231673
437 Tan Lian Ann231661
438 Skalkotas, Nikolaos231666 24.28
439 Ljungqvist, Lennart231463
440 Bronstein, Luis231263 27.58
441 Van den Berg, AMJ.231166
442 Knox, Victor W231174 28.93
443 Estimo, Samuel231073
444 Ujtelky, Maximilián230565 58.70
445 Zichichi, Alvise230566 35.49
446 Wahlbom, Magnus230469 28.63
447 Franklin, Michael J230375 42.91
448 Kristinsson, Jon230260 31.54
449 Hoen, Ragnar230166 33.24
450 Wibe, Terje230062 26.23
451 Nowak, Ignacy230073 24.96
452 Garcia, H.229969
453 Menvielle Lacourrelle, Augusto229966 35.38
454 Leskovar, Mario229963 23.22
455 Lombard, Andre229856 23.28
456 Brueggemann, Joachim229863 22.24
457 Agdamus, Jose Luis229770
458 Juarez, Carlos Eleodoro229761 35.51
459 Ghinda, Mihail Viorel229673 24.43
460 Eales, Richard G229571
461 De Castro, Edgar229561
462 Sarapu, Ortvin229475 49.94
463 Wotulo, Max229463 41.40
464 Silva, Fernando229365 23.41
465 Meduna, Eduard229276 23.30
466 Borngaesser, Rene229075 22.27
467 Chemin, Vitorio228974 23.64
468 Durao, Joaquim228967 43.18
469 Gasztonyi, Endre228765
470 Schinzel, Wladyslaw228765 30.61
471 Kruszynski, Wlodzimierz228765 22.54
472 Osterman, Rudolf228662 27.44
473 Ardiansyah, Haji228658 22.07
474 Manasterski, Lutoslaw228662 36.88
475 Nobrega, Adaucto da228575
476 Eperjesi, Laszlo228465 30.62
477 Novak, Ivan228460 30.92
478 Fappas, Joannis228376
479 Behling, Robert228376 26.50
480 Moles, John228175 24.27
481 Hansson, Dan228069 21.56
482 Boersma, Paulus A227667 25.46
483 Bohm, Hans227468 23.95
484 Cappello, Renato227464
485 Micheli, Carlo227458 27.29
486 Petran, Pal227364 27.29
487 Marszalek, Rafal227261 33.09
488 Dobrzynski, Wojciech227270 32.84
489 Tabor, Jozsef227270 37.74
490 Eslon, Jaan227174 21.82
491 Lukacs, Peter227169 23.48
492 Segal, Alexandru Sorin227061 26.24
493 Cardoso, Radolfo Tan227056
494 Pinto Paiva, Jose226875
495 Gruenberg, Hans Ulrich226757 17.97
496 Barreras, Alberto226669 22.74
497 Anelli, Antonio226669 29.64
498 Thorvaldsson, Jonas226569
499 Godoy Bugueno, David A226570
500 Letelier Martner, René226368 58.28

These ratings, calculated as of December 31, 1973, incorporate all games (against rated opponents) played in the time between January 1, 1973 and December 31, 1973, along with the ratings that were already calculated as of December 31, 1972. 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 December 31, 1973. This represents the player's estimated strength on January 1, 1974.

+/- 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 January 1, 1974. The +/- value represents the standard deviation of that estimate; the player's true strength on January 1, 1974 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 January 1, 1974. 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 December 31, 1973. 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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