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Top 10 active players as of December 31, 1947


All active players as of December 31, 1947

  #  

Player Rating +/- Best? 75%? Age
1 Botvinnik, Mikhail M28075862.9% #236.37
2 Keres, Paul27385512.2% #531.98
3 Reshevsky, Samuel H27237413.3% #836.09
4 Najdorf, Miguel2692542.7% #1037.70
5 Boleslavsky, Isaak E2685532.0% #1128.55
6 Stĺhlberg, Gideon2675561.7% #1239.92
7 Smyslov, Vassily V2656530.6% #1526.76
8 Szabó, László2649651.2% #1830.78
9 Euwe, Machgielis2644560.4% #1746.61
10 Kotov, Alexander A2636550.3% #1934.38
11 Horowitz, Al2628741.0% #2340.12
12 Bronstein, David I2628540.2% #2023.86
13 Eliskases, Erich G2624590.3% #2234.87
14 Lilienthal, Andor2613550.1% #2336.65
15 Flohr, Salo2611550.1% #2439.13
16 Lisitsin, Georgy M2596760.4% #3038.21
17 Tartakower, Saviely G2587640.1% #3160.85
18 Makogonov, Vladimir A258758 #3043.34
19 Foltys, Jan2574720.1% #3639.21
20 Lundin, Erik2572680.1% #3643.49
21 Kashdan, Isaac2569740.1% #3742.11
22 Ragozin, Viacheslav V256454 #3539.22
23 Simagin, Vladimir P256358 #3628.52
24 Konstantinopolsky, Alexander M255970 #4037.86
25 Chekhover, Vitaly2557730.1% #4139.02
26 Gligoric, Svetozar255360 #3924.91
27 Trifunovic, Petar254960 #4137.33
28 Bondarevsky, Igor Z254653 #4034.63
29 Bernstein, Ossip S254468 #4465.24
30 Levenfish, Grigory Y254364 #4358.80
31 Denker, Arnold S253160 #4633.85
32 Mikenas, Vladas252973 #4937.70
33 Heinicke, Herbert T252373 #5142.79
34 Tolush, Alexander K252357 #4837.66
35 Vidmar, Milan Sr252272 #5162.52
36 Böök, Eero252165 #5037.89
37 Stoltz, Gösta252059 #4943.64
38 Panov, Vasily N251066 #5441.16
39 Alatortsev, Vladimir A250758 #5338.62
40 Zagoriansky, Evgeny A249868 #5837.37
41 Yudovich, Mikhail M249763 #5836.56
42 Pilnik, Herman249354 #5733.97
43 Sokolsky, Alexey P249262 #5939.18
44 Novotelnov, Nikolay A249268 #6036.05
45 Kasparian, Genrikh M248957 #5937.84
46 Vidmar, Milan Jr247574 #6738.03
47 Rödl, Ludwig247476 #6840.66
48 Michel, Pablo247260 #6542.01
49 Alexander, Conel H247166 #6738.69
50 Averbakh, Yury L247076 #6925.89
51 Renter, Raul247066 #6727.41
52 Pachmann, Ludek246756 #6623.63
53 Steiner, Herman246563 #6842.70
54 Yanofsky, Daniel A246267 #7022.76
55 Kan, Ilia A246258 #6838.65
56 Kholmov, Ratmir D246265 #7022.63
57 Zíta, František245766 #7238.08
58 Kottnauer, Cenek245657 #7037.85
59 Bolbochán, Jácobo245661 #7141.01
60 Dubinin, Peter V245063 #7338.50
61 Guimard, Carlos E244857 #7334.73
62 Kamishov, Mikhail P244465 #7538.99
63 Sämisch, Friedrich244073 #7851.27
64 Bolbochán, Julio244060 #7627.77
65 Katetov, Miroslav243267 #8029.81
66 Aronin, Lev S243058 #7827.44
67 Koblencs, Aleksandrs242773 #8331.32
68 Prins, Lodewijk242769 #8234.92
69 Rossetto, Héctor D242655 #7925.31
70 Ufimtsev, Anatoly G242462 #8133.63
71 Thomas, George A241873 #8566.54
72 Fridstein, German S241271 #8736.09
73 Hounié Fleurquin, Carlos241161 #8541.13
74 Šajtar, Jaroslav240763 #8726.07
75 Petrosian, Tigran V240274 #9018.53
76 Marini, Luis239861 #8935.25
77 Ravinsky, Grigory Ionovich239564 #9138.20
78 Goldberg, Grigory A239270 #9239.42
79 Golombek, Harry238865 #9336.83
80 O'Kelly de Galway, Albéric238464 #9336.62
81 Maderna, Carlos H238158 #9337.40
82 Opocenský, Karel237865 #9555.89
83 Piazzini, Luis R237270 #9842.62
84 Klaman, Konstantin M237161 #9630.02
85 Rossolimo, Nicolas236973 #9937.84
86 Sanguinetti, Renato236558 #9731.69
87 Randviir, Jüri236566 #9920.59
88 Aitken, James M236173 #10139.17
89 Luckis, Marcos235859 #9942.95
90 Pizzi Possi, Tulio235664 #10128.22
91 Chistiakov, Alexander N235667 #10133.94
92 Tsvetkov, Alexandar K235663 #10133.23
93 Christoffel, Martin235166 #10225.32
94 Gusev, Yury S234876 #10526.26
95 Reinhardt, Enrique H234873 #10444.75
96 Goldenov, Boris Petrovich234063 #104
97 Liublinsky, Victor A233868 #10629.73
98 van Scheltinga, Tjeerd D233570 #10633.81
99 Winter, William233070 #10849.30
100 Cruz, Walter O231963 #10937.99
101 Iliesco, Juan T231558 49.70
102 Fairhurst, William A231271 44.35
103 Plater, Kazimierz231161 32.82
104 Bogatyrev, O.231176
105 Benkö, Francisco231071 37.51
106 Letelier Martner, René230371 32.27
107 Corte, César J229965 33.65
108 Broadbent, Reginald Joseph229467
109 Gereben, Ernö229071 40.53
110 Rebizzo, Cayetano228270 39.39
111 Wood, Baruch Harold227969
112 Wood, Gabriel227776 44.52
113 Grob, Henry227769 43.57
114 Abrahams, Gerald227568 40.70
115 Martín, Pedro226970 16.99
116 Kuzminykh, Evgeny226876
117 Piro, V.226370
118 Kuppe, Wilhelm225176
119 Rautenberg, Wilhelm224269
120 Magergut, Alexander223676
121 Doerner, Charles219876
122 Patt Rubinstein, J.219876
123 Aguirre Izaguirre, Pedro Jose219876
124 Martinez, JE.217170
125 Beretta, H.215870
126 Garibaldi, O.214469

These ratings, calculated as of December 31, 1947, incorporate all games (against rated opponents) played in the time between January 1, 1947 and December 31, 1947, along with the ratings that were already calculated as of December 31, 1946. 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, 1947. This represents the player's estimated strength on January 1, 1948.

+/- 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, 1948. The +/- value represents the standard deviation of that estimate; the player's true strength on January 1, 1948 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, 1948. 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, 1947. 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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