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Top 10 active players as of February 28, 1974

  #  

Player Rating +/-
1 Fischer, Robert J289357
2 Karpov, Anatoly E275850
3 Korchnoi, Viktor L273349
4 Spassky, Boris V270849
5 Petrosian, Tigran V270249
6 Polugaevsky, Lev A269748
7 Hübner, Robert269253
8 Tal, Mikhail268648
9 Portisch, Lajos267049
10 Larsen, Bent266850

About these ratings

Top 500 active players as of February 28, 1974

  #  

Player Rating +/- Best? 75%? Age
1 Fischer, Robert J28935793.8% #130.96
2 Karpov, Anatoly E2758503.3% #622.76
3 Korchnoi, Viktor L2733491.2% #942.93
4 Spassky, Boris V2708490.4% #1437.08
5 Petrosian, Tigran V2702490.3% #1644.70
6 Polugaevsky, Lev A2697480.3% #1839.27
7 Hübner, Robert2692530.3% #2025.31
8 Tal, Mikhail2686480.1% #2137.30
9 Portisch, Lajos267049 #2836.89
10 Larsen, Bent2668500.1% #2938.98
11 Smyslov, Vassily V265849 #3352.92
12 Romanishin, Oleg M265155 #3822.13
13 Vaganian, Rafael A265052 #3822.37
14 Vasiukov, Evgeny A264751 #4040.97
15 Geller, Efim P264550 #4048.98
16 Ljubojevic, Ljubomir264249 #4123.32
17 Tukmakov, Vladimir B264050 #4327.95
18 Dvoretsky, Mark I263653 #4626.22
19 Byrne, Robert E263455 #4845.85
20 Krogius, Nikolay V2632610.1% #5243.60
21 Tseshkovsky, Vitaly V263154 #5029.43
22 Furman, Semen A263057 #5253.24
23 Keres, Paul262952 #5058.14
24 Kuzmin, Gennady P262951 #5028.11
25 Mecking, Henrique262855 #5222.10
26 Hort, Vlastimil262248 #5330.13
27 Smejkal, Jan262050 #5527.93
28 Lein, Anatoly261858 #6042.91
29 Grefe, John A261858 #6026.48
30 Gligoric, Svetozar261549 #5851.07
31 Balashov, Yury S261150 #6224.95
32 Kavalek, Lubomir261049 #6230.55
33 Browne, Walter S261050 #6225.13
34 Schmid, Lothar M260963 #6945.80
35 Gheorghiu, Florin260849 #6329.89
36 Savon, Vladimir A260750 #6433.42
37 Gufeld, Eduard E260554 #6737.94
38 Gipslis, Aivars260558 #7037.05
39 Gulko, Boris F260555 #6927.05
40 Averbakh, Yury L259766 #8152.05
41 Panno, Oscar R259553 #7538.94
42 Olafsson, Fridrik259455 #7739.09
43 Liberzon, Vladimir M259155 #7936.93
44 Klovans, Janis258860 #8438.88
45 Szabó, László258650 #8056.94
46 Kholmov, Ratmir D258653 #8248.79
47 Andersson, Ulf258548 #8022.67
48 Ivkov, Borislav258449 #8140.29
49 Suetin, Alexey S258154 #8747.28
50 Unzicker, Wolfgang257958 #9048.67
51 Dzindzichashvili, Roman Y257861 #9329.81
52 Reshevsky, Samuel H257854 #8962.26
53 Alburt, Lev O257657 #9328.52
54 Sanguinetti, Raúl C257566 #9841.07
55 Najdorf, Miguel257354 #9363.86
56 Beliavsky, Alexander G257252 #9320.20
57 Matulovic, Milan257050 #9438.72
58 Pfleger, Helmut256854 #9730.56
59 Karasev, Vladimir I256761 #10235.70
60 Bronstein, David I256552 #9950.03
61 Pachmann, Ludek256467 #10949.80
62 Bagirov, Vladimir K256356 #10237.53
63 Grigorian, Karen A256355 #10226.47
64 Darga, Klaus V256361 #10640.01
65 Lutikov, Anatoly S256257 #10441.06
66 Benko, Pal C256250 #10145.62
67 Uhlmann, Wolfgang256049 #10138.91
68 Kupreichik, Viktor D255857 #10724.65
69 Ribli, Zoltán255749 #10422.48
70 Taimanov, Mark E255751 #10548.06
71 Nei, Iivo255662 #11242.33
72 Evans, Larry M255558 #11141.93
73 Kapengut, Albert Z255258 #11529.65
74 García Gonzáles, Guillermo255156 #11320.22
75 Parma, Bruno255051 #11132.16
76 Averkin, Orest N254957 #11530.01
77 Platonov, Igor V254961 #11840.11
78 Kurajica, Bojan254553 #11726.29
79 Sanguinetti, Renato254471 #12857.84
80 Velimirovic, Dragoljub254352 #11831.79
81 Matanovic, Aleksandar254253 #11943.76
82 Commons, Kim S254156 #12222.60
83 Timman, Jan H254048 #11822.21
84 Planinc, Albin253950 #12029.86
85 Csom, István253950 #12133.74
86 Shereshevsky, Mikhail I253770 #13423.85
87 Ciric, Dragoljub M253466 #13538.29
88 Filip, Miroslav253258 #13045.34
89 Jansa, Vlastimil253149 #12831.25
90 Razuvaev, Yury S253055 #13128.38
91 Mukhin, Mikhail A253059 #13326.03
92 Murey, Yakov253073 #14132.57
93 Lombardy, William J253055 #13136.23
94 Zaitsev, Igor A252567 #14235.75
95 Shamkovich, Leonid A252361 #14050.74
96 Zhidkov, Valery S252268 #14434.48
97 Hecht, Hans-Joachim252250 #13435.08
98 Adorján, András252149 #13523.90
99 Díez del Corral, Jesús252158 #14040.89
100 Podgaets, Mikhail Y252057 #14126.60
101 Tarjan, James E251954 22.02
102 Osnos, Viacheslav V251965 38.59
103 Palatnik, Semen A251863 23.92
104 Radulov, Ivan251550 35.14
105 Karner, Hillar251565 38.59
106 Quinteros, Miguel A251449 26.17
107 Malich, Burkhard G251451 37.25
108 Donner, Johannes H251449 46.64
109 Kovacevic, Vladimir251364 31.92
110 Bukic, Enver251258 36.24
111 Nikolaevsky, Yuri V251073
112 Sax, Gyula251051 22.69
113 Bilek, István250951 41.55
114 Weinstein, Norman250859 23.40
115 Bobotsov, Milko G250856 42.41
116 Georgadze, Tamaz V250757 26.30
117 Suttles, Duncan250653 28.19
118 Rashkovsky, Nukhim N250355 27.86
119 Antoshin, Vladimir S250259 44.79
120 Sveshnikov, Evgeny E250256 24.05
121 Schmidt, Wlodzimierz250151 30.88
122 Forintos, Gyözö V249951 38.58
123 Karaklajic, Nikola249864 48.01
124 Teschner, Rudolf249775 52.03
125 Sosonko, Gennadi249552 30.78
126 O'Kelly de Galway, Albéric249264 62.78
127 Keene, Raymond249250
128 Gurgenidze, Bukhuti I249261 40.29
129 Ubilava, Elizbar E249165 23.50
130 Marovic, Dražen249054 36.12
131 Rogoff, Kenneth S248762 20.93
132 Gerusel, Mathias248455 36.06
133 Minic, Dragoljub248453 36.97
134 Panchenko, Alexander N248371 20.40
135 Hartston, William R248252 26.54
136 Tseitlin, Mark D248262 30.43
137 Cvetkovic, Srdjan248266 27.99
138 Suba, Mihai248263 26.74
139 Dueball, Juergen248157 28.91
140 Hamann, Svend248059 33.39
141 Tringov, Georgy P247954 36.97
142 Raicevic, Vladimir247856 24.82
143 Barcza, Gedeon247862 62.52
144 Sigurjónsson, Gudmundur247856 26.43
145 Padevsky, Nikola B247657 40.75
146 Timoshchenko, Gennady247561 24.83
147 Espig, Lutz247553 25.15
148 Mohrlok, Dieter247462
149 Zilberstein, Valery I247461 30.87
150 Anikaev, Yury247457 25.66
151 Mišta, Ladislav247463 30.33
152 Soltis, Andrew E247258 26.75
153 Kraidman, Yair247256 41.32
154 Byrne, Donald247167 43.71
155 Ghizdavu, Dumitru247058 24.77
156 Szmetan, Jorge247058 23.76
157 Ree, Hans247049 29.45
158 Buljovcic, Ivan247076 37.17
159 Pribyl, Josef247051 26.38
160 Antunac, Goran246960 28.86
161 Popov, Luben246853 38.08
162 Torre, Eugenio246852 22.32
163 Rukavina, Josip246654 31.25
164 Yanofsky, Daniel A246666 48.92
165 Pilnik, Herman246660 60.14
166 Enklaar, Bertus F246551
167 Ciocaltea, Victor246550 42.12
168 Moe, Mogens246573 29.95
169 Knezevic, Milorad246556 37.33
170 Zhuravliov, Valerij246460 35.21
171 Saidy, Anthony F246453 36.78
172 Pomar Salamanca, Arturo246450 42.49
173 Rossetto, Héctor D246157 51.47
174 Maric, Rudolf246171 46.79
175 Schweber, Samuel246058 37.62
176 Lengyel, Laszlo246069 29.63
177 Calvo Minguez, Ricardo245958 30.35
178 Kaplan, Julio P245953 23.59
179 Fedorov, Vladislav245773 20.60
180 Barczay, Laszlo245660 38.02
181 Bertok, Mario245468 44.49
182 Spiridonov, Nikola245261 35.99
183 Makarichev, Sergey Y245160 20.28
184 Cosulich, Roberto245158
185 Biyiasas, Peter245060 23.28
186 Kuijpers, Franciscus Antonius245059
187 Robatsch, Karl245058 45.37
188 Mednis, Edmar J245053 36.93
189 Doroshkievich, Vladimir K244970 36.17
190 Lerner, Konstantin Z244870 23.99
191 Jansson, Borje244758 31.95
192 Ghitescu, Theodor244753 40.09
193 Damjanovic, Mato244751 46.93
194 Rytov, Boris244670
195 Ornstein, Axel244656 21.84
196 Stanciu, Traian244675 38.46
197 Zuidema, Coenraad244657
198 Westerinen, Heikki MJ244550 29.83
199 Zuckerman, Bernard244556 30.90
200 Bogdanovic, Rajko244567 42.29
201 Williams, Arthur Howard244459
202 Estrin, Yacov B244359 50.85
203 Vukic, Milan244358 30.53
204 Sofrevski, Jovan244365 38.53
205 Torán Albero, Román244267 42.39
206 Vranesic, Zvonko244072 35.40
207 Tatai, Stefano243951 35.93
208 Rossolimo, Nicolas243971 63.99
209 Mueller, Klaus Uwe243856
210 Capelan, Guenter243859 41.58
211 Hennings, Artur243853 33.63
212 Janoševic, Dragoljub243852 50.64
213 Garcia, Raimundo243755 37.75
214 Knaak, Rainer F243651 20.94
215 Lengyel, Levente243651 40.71
216 Cortlever, Nicolaas243571 58.71
217 Bisguier, Arthur B243453 44.39
218 Kuindzhi, Alexander243367
219 Kirov Ivanov, Nino243369 28.47
220 Christoph, Manfred243269 42.75
221 Penrose, Jonathan243261 40.39
222 Stean, Michael F243055 20.48
223 Gilden, Lawrence C243063
224 Dueckstein, Andreas243069 46.57
225 Hase, Juan Carlos243059
226 Messing, Hrvoje243066 33.59
227 Cherepkov, Alexander V242972 53.33
228 Krnic, Zdenko242763 26.40
229 Kestler, Hans-Günter242663 34.21
230 McKay, Roderick M242566 22.05
231 Kozlov, Vladimir N242575 23.74
232 Haag, Ervin242465 41.13
233 Minev, Nikolay N242457 43.14
234 Boey, Josef242364 39.78
235 Suess, Alois242369 30.72
236 Faragó, Iván242355 27.90
237 Rodriguez Vargas, Orestes242257 30.65
238 Honfi, Karoly242153 43.34
239 Hug, Werner242153 21.47
240 Gaprindashvili, Nona242163 32.82
241 Lukin, Andrei M242070 25.50
242 Peretz, Malkiel242066 30.72
243 Mikhalchishin, Adrian B242070 19.28
244 Chellstorp, Craig V242063
245 Kozma, Julius241968 44.74
246 Ostojic, Predrag241953 36.02
247 Miles, Anthony J241857 18.84
248 Dely, Peter241755 39.65
249 Kolarov, Atanas S241769 39.98
250 Nicevski, Risto241655 28.67
251 Botterill, George Steven241663
252 Drimer, Dolfi241675 39.37
253 Castro Rojas, Oscar Humberto241576 20.80
254 Scholl, Eddie C241456 29.36
255 Johannessen, Svein241462 36.36
256 Liebert, Heinz241250 37.76
257 Plachetka, Jan241253 29.03
258 Ermenkov, Evgenij241256 24.41
259 Jiménez Zerquera, Eleazar241165 45.68
260 Ungureanu, Emil241163 37.32
261 Langeweg, Kick240950 36.97
262 Pritchett, Craig William240862
263 Campos Lopez, Mario240864 30.79
264 Haygarth, Michael J240870
265 Cuasnicu, Oscar240667 31.34
266 Lehmann, Heinz Dr240656
267 Řgaard, Leif240658 22.15
268 Mariotti, Sergio240657 27.55
269 Cobo Arteaga, Eldis240458
270 Augustin, Josef240366 31.78
271 Ujtumen, Tudev240364 34.50
272 Ek, Hans240362 45.39
273 Peev, Peicho Chonev240256 33.90
274 Martz, William E240156
275 Mestrovic, Zvonimir240162 29.36
276 Bednarski, Jacek B240151 34.95
277 Geller, Uzi240172 43.09
278 Myagmarsuren, Lhamsuren240062 36.03
279 Stoica, Valentin240065 24.04
280 Cuéllar Gacharná, Miguel240061 57.28
281 Grinberg, Ricardo239970 26.12
282 Clarke, Peter H239969
283 Bukal, Vladimir Sr239966 34.32
284 Jakobsen, Ole239957 31.36
285 Porat, Yosef239871 64.72
286 Estevez Morales, Guillermo239857
287 Pytel, Krzysztof239850 28.79
288 Eising, Johannes239855 38.75
289 Siaperas, Triantafyllos239767 41.57
290 Vadasz, Laszlo239654 26.09
291 Jankovec, Ivan239663 35.36
292 Debarnot, Roberto239657 26.56
293 Simic, Radoslav239571 25.72
294 Andersen, Borge239575 39.94
295 Doda, Zbigniew239553 43.02
296 Ivanovic, Božidar239371 27.51
297 Rubinetti, Jorge A239355 28.90
298 Kovacs, Laszlo M239362 35.40
299 Vogt, Lothar H239351 22.11
300 Deze, Anton239258
301 Adamski, Jan239151 30.30
302 Soos, Bela239172 43.97
303 Kristiansen, Erling239161 37.20
304 Zwaig, Arne239071
305 Kostro, Jerzy238953 37.09
306 Basman, Michael J238859 27.94
307 Kinnmark, Ove238761 29.18
308 Korensky, Valeri S238771
309 Karklins, Andrew238658 26.87
310 Czerniak, Moshe238563 64.07
311 Webb, Simon238466 24.72
312 Hartoch, Robert G238450
313 Hernandez, Roman238370 24.26
314 Ilievski, Dimitar238275 32.51
315 Partos, Charles238168 37.55
316 Kupka, Slavoj238061 31.64
317 Bohm, Hans237959 24.12
318 Neckar, Lubomir237865 23.57
319 Spassov, Liuben237866 30.93
320 Friedman, Shmuel237871
321 Foguelman, Alberto237771 50.37
322 Hazai, Laszlo237761 20.71
323 Bellin, Robert237762 21.66
324 Barle, Janez237669 21.93
325 Puc, Stojan237668 52.88
326 Filipowicz, Andrzej237653 35.79
327 Markland, Peter R237655 22.87
328 Shashin, Alexsander A237575
329 Mititelu, Gheorghe237472 39.33
330 van Scheltinga, Tjeerd D237457 59.97
331 Portisch, Ferenc237470 34.88
332 Bohosjan, Sarkis237363 32.91
333 Masic, Ljubomir237358 37.65
334 Trapl, Jindrich237375 31.92
335 Rajkovic, Dusan237260 31.70
336 Uddenfeldt, Dan237272 22.91
337 Sapi, Laszlo237165 38.93
338 Kagan, Shimon237159 31.89
339 Ekenberg, Bengt237171
340 Prandstetter, Eduard237066 25.20
341 Sydor, Andrzej236956 37.15
342 Lechtynsky, Jiri236859 26.26
343 Paehtz, Thomas Sr236858 17.48
344 Pavlov, Mircea236763 36.46
345 Liljedahl, Lennart236759 26.50
346 Toth, Bela236656 30.85
347 Zichichi, Alvise236560 35.65
348 Pedersen, Eigil236572
349 Lundin, Erik236468 69.65
350 Blatny, Frantisek236465 40.90
351 Vujacic, Borivoje236476 24.46
352 Cuartas, Carlos236467 33.54
353 Nikolic, Stanimir236364 39.09
354 Corden, Martyn J236272
355 Sloth, Jorn236271 29.48
356 Emma, Jaime J236158 36.11
357 Balcerowski, Witold236070 38.55
358 Gesos, Pavlos236065 28.76
359 Denker, Arnold S235972 60.02
360 Sznapik, Aleksander235954 23.05
361 Donoso Velasco, Pedro H235974 30.01
362 Wade, Robert Graham235958
363 Tompa, Janos235961 26.83
364 Lanc, Alois235964 26.03
365 Olsson, Ake235868 39.82
366 Rodriguez Gonzales, Jesus235864
367 Belkadi, Ridha235775 48.84
368 Kaldor, Avraham235667 26.77
369 Garcia Martinez, Silvino235552 29.65
370 Quinones, Oscar Carillo235572
371 Holm, Sejer235459 34.55
372 Grabczewski, Romuald235355 42.06
373 Garcia, Horacio235365
374 Szymczak, Zbigniew235359 22.15
375 Jongsma, Alexander235272 35.74
376 Lekander, Rolf235269 27.15
377 Fichtl, Jirí235256 53.03
378 Schoeneberg, Manfred235162 27.64
379 Eley, Brian235060
380 Zinn, Lothar235055 35.94
381 Whiteley, Andrew J234965 26.72
382 Mihaljcisin, Mihajlo234974 41.02
383 Rajna, George234966 27.04
384 Jacobsen, Bo234972 25.21
385 Brond, Victor234964
386 Hohler, Peter234871 32.87
387 Kaufman, Larry C234864 26.29
388 Banas, Jan234754 26.73
389 Meduna, Eduard234764 23.46
390 Mestel, A Jonathan234761 16.95
391 Moehring, Guenther234556 37.26
392 Baumbach, Friedrich234568 38.47
393 Poch, Cesar Guillermo234562
394 Maciejewski, Andrzej234457 22.64
395 Bellon Lopez, Juan Manuel234453 23.80
396 Pelikán, Jorge234361 67.84
397 Cafferty, Bernard234368 39.67
398 Gasic, Bozidar234376 36.38
399 Formanek, Edward W234268 31.81
400 Saren, Ilkka J234271 33.78
401 Navarovszky, Laszlo234166 40.90
402 Vogel, Jaap234161 25.90
403 Van Geet, Dirk Daniel234171 41.98
404 Lebredo, Gerardo234067 23.57
405 Braun, Gottfried233964 40.66
406 Szilágyi, György233961 52.65
407 Akvist, Hakan233958 32.34
408 Pustina, Ylvi233871
409 Harandi, Khosro233871 23.49
410 Van Riemsdijk, Herman C233765 25.51
411 Hlousek, Zdenek233775
412 Nordstrom, Felix233768 29.73
413 Schaufelberger, Heinz233665 26.28
414 Casas, Fernando233669 47.52
415 Polgar, Istvan233667 29.26
416 Visier Segovia, Fernando233465 31.07
417 Pintér, József233366 20.30
418 Bönsch, Uwe233358 15.37
419 Van Baarle, C John233368 28.85
420 Horner, Jeff233073 24.51
421 Romm, Meir232972 34.68
422 Kunsztowicz, Uwe232862 30.11
423 Wirthensohn, Heinz232865 22.82
424 Domnitz, Zadok232870 40.37
425 Camara, Helder232763 37.06
426 Kluger, Guyla232763 60.12
427 Roehrl, Karl232773 33.13
428 Neukirch, Detlef232764 33.55
429 Gliksman, Darko232673 36.39
430 Troianescu, Octav232669 58.06
431 Palermo, Vicente232672 41.95
432 Cardoso, Radolfo Tan232654
433 Borngaesser, Rene232575 22.43
434 Levy, David Neil Lawrence232464
435 Bronstein, Luis232463 27.74
436 Pietrusiak, Bogdan232460 40.62
437 Kushnir, Alla232368
438 Gereben, Ernö232265 66.69
439 Menvielle Lacourrelle, Augusto232259 35.54
440 Reicher, Emanoil231972 43.91
441 De la Vega, Hector231969 47.94
442 Ljungqvist, Lennart231967
443 Naranja, Renato231957 33.43
444 Thorbergsson, Freysteinn231873
445 Ligterink, Gert231761 24.28
446 Gross, Stefan231767 24.50
447 Carvalho, Herbert Abreu231673 19.41
448 Zilberman, Nathan R231674 33.82
449 Fridh, Anton231669 54.19
450 Onat, Ilhan231576 44.23
451 Tan Lian Ann231466
452 Horvath, Tamas231466 22.35
453 Ghinda, Mihail Viorel231276 24.59
454 Inkiov, Ventzislav231271 17.78
455 Poutiainen, Pertti231275
456 Helmertz, Per Inge231173
457 Skalkotas, Nikolaos231172 24.44
458 Matera, Salvatore Joseph231167
459 Nagy, Ervin231067 28.58
460 Knox, Victor W230874 29.10
461 Hansson, Dan230868 21.72
462 Cibulka, Vladimir230762 32.32
463 Sumiacher, Carlos230773
464 Starck, Bodo230666 39.37
465 Dieks, Roy G230664 18.07
466 Kruszynski, Wlodzimierz230562 22.70
467 Pokojowczyk, Jerzy230566 25.02
468 Tuzovsky, Alexander I230569
469 Van den Berg, AMJ.230475
470 Beyen, Roland230474 41.89
471 Medina García, Antonio A230352 54.40
472 Zoltek, Tadeusz230262 36.49
473 Segal, Alexandru Sorin230263 26.40
474 Lombard, Andre230157 23.44
475 Manasterski, Lutoslaw230068 37.05
476 Ardiansyah, Haji229958 22.23
477 Bachtiar, Arovah229761 39.92
478 Ujtelky, Maximilián229658 58.85
479 Van Seters, Frits229674
480 Kristinsson, Jon229563 31.70
481 Juarez, Carlos Eleodoro229566 35.66
482 Eales, Richard G229572
483 Boersma, Paulus A229374 25.62
484 Franzen, Jozef229363 28.06
485 Rodriguez Cordoba, Jesus R229376 24.70
486 Clemens, Christian229261 33.56
487 Hoen, Ragnar229163 33.40
488 Moles, John229074 24.43
489 Wagman, Stuart229066 54.79
490 Novak, Ivan228955 31.09
491 De Castro, Edgar228966
492 Wibe, Terje228961 26.39
493 Durao, Joaquim228969 43.34
494 Wotulo, Max228869 41.56
495 Lukacs, Peter228762 23.64
496 Sabao, Raimundo228371 11.56
497 Sarapu, Ortvin228273 50.11
498 Prochownik, Franciszek228266 39.28
499 Beil, Zdenek228071 20.53
500 Leskovar, Mario227969 23.38

These ratings, calculated as of February 28, 1974, incorporate all games (against rated opponents) played in the time between March 1, 1973 and February 28, 1974, along with the ratings that were already calculated as of February 28, 1973. 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, 1974. This represents the player's estimated strength on March 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 March 1, 1974. The +/- value represents the standard deviation of that estimate; the player's true strength on March 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 March 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 February 28, 1974. 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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