Tournaments with 2, 3, 4 and 5 players

The <CG> snapshot I’m working on has 296 matches, i.e. tournaments with just two players. These matches are listed below. We start with 3-player tournaments, since they are fewer and easier to list:

N_players = 3, N_tournaments = 7

   80038    3    23  (3)    Lodz (1908)
   83484    3     5  (3)    Stockholm Interzonal Playoff (1962)
   84879    3    12  (3)    Los Angeles Interzonal Playoff (1968)
   84553    3    12  (3)    Portoroz Interzonal Playoff (1973)
   83387    3    12  (3)    Varese Interzonal Playoff (1976)
   85425    3    12  (3)    London Candidates Reserve Playoff (1985)
   84631    3     4  (3)    Stockfish Nakamura Match (2014)

There probably should be more of these playoffs, once <CG> methodically separates out the intermixed playoff/main tournament collections. Of course, <CG> could elect to keep all the games organised with the same <tid>, and use the PGN headers to distinguish the games, but that would dramatically compromise the utility of analysis like this one. I don’t recommend that.

Back to the tournaments, with a listing of N_players=4 tournaments (now many are true, small, quadrangle(?) tournaments:

 N_players=4, N_tournaments=69

    81331    4    11  (6)    Buffalo (1894)
    79222    4    36  (6)    St. Petersburg (1895/96)
    82061    4    12  (6)    Sylvan Beach (1904)
    80791    4    12  (6)    Trenton Falls (1906)
    82969    4     6  (6)    Savorin Cup (1913)
    79434    4     6  (6)    St. Petersburg  Quadrangular (1913)
    79954    4    12  (6)    Quadrangular Masters (1913)
    79302    4    12  (6)    Berlin Four Masters (1918)
    80765    4    12  (6)    Berlin Grandmasters (1918)
    79622    4    12  (6)    Bad Nauheim-Stuttgart-Garmisch (1937)
    79509    4    24  (6)    Oegstgeest (1970)
    80013    4    12  (6)    Manila (1976)
    80228    4    12  (6)    Amsterdam (1976)
    79999    4    12  (6)    1st Euwe Memorial (1987)
    80000    4    12  (6)    2nd Euwe Memorial (1988)
    80004    4    12  (6)    3rd Euwe Memorial (1989)
    80008    4    12  (6)    4th Euwe Memorial (1990)
    80012    4    12  (6)    6th Euwe Memorial (1992)
    80015    4    12  (6)    7th Euwe Memorial (1993)
    80021    4    12  (6)    8th Euwe Memorial (1994)
    80022    4    12  (6)    9th Euwe Memorial (1995)
    80048    4    12  (6)    Merida (2000)
    39881    4    12  (6)    Queens and Kings Match (2003)
    39570    4    12  (6)    SIS-MH Masters (2003)
    39647    4    12  (6)    16th Ciudad de Leon (2003)
    39858    4    11  (6)    Simpsons 175th (2003)
    39906    4    12  (6)    7th Essent (2003)
    49219    4    12  (6)    9th Essent Hoogeveen (2005)
    46503    4    12  (6)    Ciudad de Leon XVIII (2005)
    47776    4    12  (6)    Unzicker's 80th Birthday (2005)
    48037    4    12  (6)    Magistral Ciutat d'Igualada (2005)
    52495    4    16  (6)    XIX Ciudad de Leon (2006)
    53655    4    12  (6)    Lichthof Chess Champions (2006)
    54405    4    12  (6)    Essent Tournament (2006)
    62265    4    12  (6)    Ciudad de Leon (2007)
    63239    4    12  (6)    11th Essent Chess Tournament (2007)
    66130    4    12  (6)    Essent (2008)
    63617    4    12  (6)    Corus (Honorary Group) (2008)
    64217    4    12  (6)    Dos Hermanas XIV (2008)
    64378    4    14  (6)    XXI Magistral Ciudad de Leon (2008)
    65065    4    20  (6)    Chess Classic Mainz (2008)
    66935    4    16  (6)    Aker Chess Challenge (2009)
    68395    4    17  (6)    XXII Magistral Ciudad de Leon (2009)
    69007    4    12  (6)    Chess Classic Mainz (rapid) (2009)
    69642    4    12  (6)    2nd Grand Slam Masters Bilbao Final (2009)
    70035    4    12  (6)    13th Unive Tournament (2009)
    71538    4    16  (6)    Leon Rapid (2010)
    72163    4    16  (6)    Arctic Securities Chess Stars (2010)
    72456    4    12  (6)    Bilbao Masters (2010)
    72527    4    12  (6)    Unive Tournament (2010)
    72542    4    12  (6)    Ajedrez UNAM Quadrangular (2010)
    72166    4    12  (6)    Shanghai Masters (2010)
    74203    4    12  (6)    CG.com Masters - Machines Invitational (2011)
    74999    4    12  (6)    Botvinnik Memorial Rapid (2011)
    75767    4    12  (6)    15th Unive (Crown Group) (2011)
    73627    4    11  (6)    US Championship (Knock-out) (2011)
    78293    4    12  (6)    Dutch Championship (Women) (2012)
    79110    4    12  (6)    16th Unive Tournament (2012)
    79230    4    12  (6)    Kings' Tournament (2012)
    82159    4    12  (6)    Sinquefield Cup (2013)
    82368    4    12  (6)    Bilbao Masters (2013)
    82387    4    12  (6)    Unive Crown Group (2013)
    80677    4    12  (6)    Zurich Chess Challenge (2013)
    82762    4    12  (6)    London Chess Classic (Group B) (2013)
    82763    4    12  (6)    London Chess Classic (Group C) (2013)
    82764    4    12  (6)    London Chess Classic (Group D) (2013)
    82761    4    12  (6)    London Chess Classic (Group A) (2013)
    80679    4    12  (6)    Zurich Chess Challenge (Blitz) (2013)
    84700    4    12  (6)    Bilbao Masters (2014)

 

Finally, let’s list the Matches:

    79243    2    27  (1)    Staunton - Saint Amant (1843)
    82146    2     5  (1)    Harrwitz - Williams (1846)
    82326    2    12  (1)    Kieseritsky - Horwitz (1846)
    82127    2    10  (1)    Anderssen - Harrwitz (1848)
    82143    2    12  (1)    Harrwitz - Williams (1852/53)
    82144    2    10  (1)    Harrwitz - Williams (1852)
    82130    2     8  (1)    Morphy - Harrwitz (1858)
    79263    2    11  (1)    Anderssen - Morphy (1858)
    79504    2    14  (1)    Morphy - Loewenthal (1858)
    82129    2     8  (1)    Morphy - Mongredien (1859)
    82133    2     9  (1)    Anderssen - Kolisch (1861)
    82128    2     8  (1)    Anderssen - Paulsen (1862)
    82371    2    10  (1)    MacDonnell - Mackenzie (1862/63)
    82307    2     9  (1)    Steinitz - Dubois (1862)
    79633    2    14  (1)    Anderssen - Steinitz (1866)
    79931    2    12  (1)    Steinitz - Zukertort (1872)
    79940    2     7  (1)    Steinitz - Blackburne (1876)
    82280    2     9  (1)    Chigorin - Schiffers First Match (1878)
    82285    2    14  (1)    Chigorin - Schiffers Second Match (1878)
    82286    2    10  (1)    Chigorin - Schiffers Third Match (1879)
    82151    2    19  (1)    Rosenthal - Zukertort (1880)
    80461    2    14  (1)    Blackburne - Zukertort (1881)
    53788    2    20  (1)    Steinitz - Zukertort World Championship Match (1886)
    83257    2    13  (1)    Blackburne - Gunsberg (1887)
    83467    2    14  (1)    Blackburne - Zukertort (1887)
    82119    2     8  (1)    Lasker - Mieses (1889/90)
    53815    2    17  (1)    Steinitz - Chigorin World Championship Match (1889)
    82067    2     5  (1)    Lasker - Miniati (1890)
    83023    2    14  (1)    Blackburne - Lee (1890)
    53816    2    11  (1)    Steinitz - Gunsberg World Championship Match (1890)
    80697    2    12  (1)    Lasker - Bird (1890)
    82163    2    10  (1)    Blackburne - Golmayo (1891)
    82066    2     5  (1)    Lasker - Bird (1892)
    53817    2    22  (1)    Steinitz - Chigorin World Championship Rematch (1892)
    80682    2    10  (1)    Lasker - Blackburne (1892)
    82148    2    16  (1)    Wallace - Crane (1893)
    82303    2     5  (1)    Lasker - Ettlinger (1893)
    85135    2    22  (1)    Chigorin - Tarrasch (1893)
    80696    2     9  (1)    Lasker - Showalter (1893)
    82311    2    17  (1)    Showalter - Hodges (1894)
    82312    2     9  (1)    Showalter - Hodges Rematch (1894)
    84484    2    25  (1)    Showalter - Albin (1894)
    53818    2    19  (1)    Lasker - Steinitz World Championship (1894)
    82149    2    16  (1)    Wallace - Esling (1895)
    82145    2    11  (1)    Napier - Marshall (1896)
    82150    2     9  (1)    Wallace - Hodgson (1896)
    82310    2    13  (1)    Showalter - Barry (1896)
    82314    2    15  (1)    Showalter - Kemeny (1896)
    54079    2    16  (1)    Lasker - Steinitz World Championship Rematch (1896)
    79941    2    11  (1)    Schiffers - Steinitz (1896)
    80492    2    21  (1)    Pillsbury - Showalter (1897)
    80078    2    13  (1)    Janowski - Showalter Match 1 (1898)
    80493    2    12  (1)    Pillsbury - Showalter (1898)
    80079    2     6  (1)    Janowski - Showalter Match 2 (1899)
    80080    2     7  (1)    Janowski - Showalter Match 3 (1899)
    80197    2     4  (1)    Janowski - Marshall, Match 1 (1899)
    80396    2    13  (1)    Capablanca - Corzo (1901)
    82672    2     1  (1)    Nordic Congress (1903)
    82363    2    17  (1)    Marshall - Tarrasch (1905)
    80198    2    17  (1)    Janowski - Marshall, Match 2 (1905)
    54097    2    15  (1)    Lasker - Marshall World Championship Match (1907)
    82321    2     8  (1)    Rubinstein - Marshall (1908)
    82323    2    10  (1)    Marshall - Mieses (1908)
    54099    2    14  (1)    Lasker - Tarrasch World Championship Match (1908)
    80199    2    10  (1)    Janowski - Marshall, Match 3 (1908)
    82118    2    10  (1)    Rubinstein - Mieses, May (1909)
    82313    2    12  (1)    Marshall - Showalter (1909)
    82322    2     9  (1)    Marshall - Jaffe (1909)
    79943    2    14  (1)    Lasker - Janowski (1909)
    80449    2    23  (1)    Capablanca - Marshall (1909)
    54100    2     8  (1)    Lasker - Schlechter World Championship Match (1910)
    54102    2     4  (1)    Lasker - Janowski World Championship Match (1910)
    82319    2     5  (1)    Leonhardt - Nimzowitsch (1911)
    80574    2    16  (1)    Tarrasch - Schlechter (1911)
    80200    2    10  (1)    Janowski - Marshall, Match 4 (1912)
    82304    2     5  (1)    Marshall - Duras (1913)
    82309    2    10  (1)    Alekhine - Levitsky (1913)
    80081    2    11  (1)    Janowski - Showalter Match 4 (1916)
    80201    2     8  (1)    Janowski - Marshall, Match 5 (1916)
    80698    2     6  (1)    Lasker - Tarrasch (1916)
    80027    2     6  (1)    Rubinstein - Schlechter (1918)
    80032    2     5  (1)    Capablanca - Kostic (1919)
    82305    2     4  (1)    Alekhine - Bogoljubov (1921)
    54111    2    13  (1)    Lasker - Capablanca World Championship Match (1921)
    84840    2     4  (1)    Grⁿnfeld - Becker (1922)
    84842    2     6  (1)    Grⁿnfeld - Tartakower (1922)
    80463    2    18  (1)    Marshall - Ed Lasker Match (1923)
    80028    2    10  (1)    Alekhine - Euwe Training Match (1926)
    54140    2    34  (1)    Capablanca - Alekhine World Championship Match (1927)
    80763    2    10  (1)    Bogoljubov - Euwe: Second FIDE Championship (1928)
    80764    2    10  (1)    Bogoljubov - Euwe: First FIDE Championship (1928)
    54141    2    20  (1)    Alekhine - Bogoljubov World Championship Match (1929)
    80397    2    10  (1)    Capablanca - Euwe (1931)
    79513    2    12  (1)    Botvinnik - Flohr Match (1933)
    54142    2    52  (1)    Alekhine - Bogoljubov World Championship Rematch (1934)
    54135    2    60  (1)    Alekhine - Euwe World Championship Match (1935)
    54136    2    24  (1)    Euwe - Alekhine World Championship Rematch (1937)
    79972    2    13  (1)    Botvinnik - Levenfish (1937)
    84128    2    12  (1)    Gligoric - Stσhlberg match (1949)
    84227    2    10  (1)    Euwe - Pirc (1949)
    84402    2    12  (1)    Najdorf - Trifunovic (1949)
    84956    2    14  (1)    Bronstein - Boleslavsky Candidates Playoff (1950)
    54195    2    20  (1)    Botvinnik - Bronstein World Championship Match (1951)
    82131    2    18  (1)    Reshevsky - Najdorf (1952)
    82147    2    10  (1)    Reshevsky - Gligoric (1952)
    83610    2    10  (1)    Sarapu - Purdy Match, Australasian Championship (1952)
    82132    2    17  (1)    Reshevsky - Najdorf (1953)
    54196    2    24  (1)    Botvinnik - Smyslov World Championship Match (1954)
    85454    2     6  (1)    Prague Candidates Reserve Playoff (1956)
    82158    2     8  (1)    Fischer - Cardoso (1957)
    82271    2    10  (1)    Reshevsky - Bisguier (1957)
    82272    2    10  (1)    Reshevsky - Byrne, D. (1957)
    54198    2    22  (1)    Botvinnik - Smyslov World Championship Return Match (1957)
    54197    2    22  (1)    Botvinnik - Smyslov World Championship Rematch (1958)
    54299    2    22  (1)    Tal - Botvinnik World Championship Match (1960)
    54393    2    21  (1)    Tal - Botvinnik World Championship Return Match (1961)
    80180    2    11  (1)    Fischer - Reshevsky (1961)
    83290    2     8  (1)    Keres - Geller 2nd place Candidates Playoff (1962)
    54394    2    22  (1)    Petrosian - Botvinnik World Championship Match (1963)
    83505    2     3  (1)    Amsterdam Interzonal Playoff (1964)
    80065    2    10  (1)    Spassky - Keres Candidates Quarterfinal (1965)
    80923    2     8  (1)    Geller - Smyslov Candidates Quarterfinal (1965)
    80924    2     8  (1)    Larsen - Ivkov Candidates Quarterfinal (1965)
    80925    2     8  (1)    Tal - Portisch Candidates Quarterfinal (1965)
    80926    2    10  (1)    Tal - Larsen Candidates Semifinal (1965)
    80927    2     8  (1)    Spassky - Geller Candidates Semifinal (1965)
    80929    2    11  (1)    Spassky - Tal Candidates Final (1965)
    85172    2     9  (1)    Larsen - Geller 3rd place Candidates Playoff (1966)
    54395    2    24  (1)    Petrosian - Spassky World Championship Match (1966)
    81994    2     8  (1)    Spassky - Geller Candidates Quarterfinal (1968)
    83239    2    10  (1)    Spassky - Korchnoi Candidates Final (1968)
    84843    2     9  (1)    Tal - Gligoric Candidates Quarterfinal (1968)
    84955    2     8  (1)    Korchnoi - Reshevsky Candidates Quarterfinal (1968)
    85171    2    10  (1)    Larsen - Portisch Candidates Quarterfinal (1968)
    80930    2     8  (1)    Spassky - Larsen Candidates Semifinal (1968)
    54396    2    23  (1)    Petrosian - Spassky World Championship Rematch (1969)
    84906    2     9  (1)    Larsen - Uhlmann Candidates Quarterfinal (1971)
    84913    2     8  (1)    Korchnoi - Geller Candidates Quarterfinal (1971)
    84954    2     7  (1)    Petrosian - Hⁿbner Candidates Quarterfinal (1971)
    85443    2    10  (1)    Petrosian - Korchnoi Candidates Semifinal (1971)
    79179    2     6  (1)    Fischer - Larsen Candidates Semifinal (1971)
    79224    2     6  (1)    Fischer - Taimanov Candidates Quarterfinal (1971)
    79446    2     9  (1)    Fischer - Petrosian Candidates Final (1971)
    54397    2    18  (1)    Fischer - Spassky World Championship Match (1972)
    84844    2    11  (1)    Karpov - Spassky Candidates Semifinal (1974)
    84618    2    13  (1)    Petrosian - Portisch Candidates Quarterfinal (1974)
    84636    2    13  (1)    Korchnoi - Mecking Candidates Quarterfinal (1974)
    84764    2     8  (1)    Karpov - Polugaevsky Candidates Quarterfinal (1974)
    84689    2     6  (1)    Spassky - Byrne Candidates Quarterfinal (1974)
    79939    2    24  (1)    Karpov - Korchnoi Candidates Final (1974)
    83822    2    12  (1)    Korchnoi - Petrosian Candidates Quarterfinal (1977)
    84120    2    10  (1)    Portisch - Larsen Candidates Quarterfinal (1977)
    84217    2    12  (1)    Polugaevsky - Mecking Candidates Quarterfinal (1977)
    84242    2    16  (1)    Spassky - Hort Candidates Quarterfinal (1977)
    84495    2    15  (1)    Spassky - Portisch Candidates Semifinal (1977)
    84537    2    13  (1)    Korchnoi - Polugaevsky Candidates Semifinal (1977)
    81035    2    18  (1)    Korchnoi - Spassky Candidates Final (1977)
    54641    2    64  (1)    Karpov - Korchnoi World Championship Match (1978)
    84907    2     6  (1)    Budapest Interzonal Playoff (1979)
    82364    2     9  (1)    Korchnoi - Petrosian Candidates Quarterfinal (1980)
    83420    2    10  (1)    Hⁿbner - Adorjan Candidates Quarterfinal (1980)
    83466    2     8  (1)    Polugaevsky - Tal Candidates Quarterfinal (1980)
    83483    2    14  (1)    Korchnoi - Polugaevsky Candidates Semifinal (1980)
    83506    2    11  (1)    Hⁿbner - Portisch Candidates Semifinal (1980)
    83607    2    10  (1)    Korchnoi - Hⁿbner Candidates Final (1980)
    85013    2    14  (1)    Portisch - Spassky Candidates Quarterfinal (1980)
    55014    2    18  (1)    Karpov - Korchnoi World Championship Rematch (1981)
    85072    2     6  (1)    Malm÷ Candidates Reserve Playoff (1983)
    85337    2    10  (1)    Ribli - Torre Candidates Quarterfinal (1983)
    85470    2     4  (1)    Winstone Chess Challenge Match (1983)
    55015    2    90  (1)    Karpov - Kasparov World Championship Match (1984)
    55016    2    15  (1)    Karpov - Kasparov World Championship Match (1985)
    55017    2    24  (1)    Karpov - Kasparov World Championship Rematch (1986)
    83805    2    11  (1)    Karpov - Sokolov Candidates Final (1987)
    55128    2    24  (1)    Kasparov - Karpov World Championship Match (1987)
    55223    2    24  (1)    Kasparov - Karpov World Championship Match (1990)
    80204    2    30  (1)    Fischer - Spassky (1992)
    83258    2    10  (1)    Polgar - Spassky (1993)
    55303    2    21  (1)    Karpov - Timman FIDE World Championship (1993)
    55309    2    20  (1)    Kasparov - Short World Championship Match (1993)
    80011    2     8  (1)    Gelfand - Kramnik Candidates Semi-Final (1994)
    80071    2     8  (1)    Salov - Timman FIDE Candidates Semifinal (1994)
    82664    2     1  (1)    Amantea (1995)
    55522    2    18  (1)    Kasparov - Anand World Championship Match (1995)
    55432    2    18  (1)    Karpov - Kamsky FIDE World Championship (1996)
    80070    2     9  (1)    Shirov - Kramnik WCC Candidates Match (1998)
    55521    2     8  (1)    Karpov - Anand World Championship Match (1998)
    81312    2    24  (1)    Kosmos Hotel (5-minute/player) blitz (1998)
    66109    2     6  (1)    FIDE World Championship Knockout Tournament (1999)
    61813    2    15  (1)    Kasparov - Kramnik World Championship Match (2000)
    55714    2     4  (1)    FIDE World Championship Knockout Tournament (2000)
    39369    2     8  (1)    Duel of the Graces (2002)
    39416    2     8  (1)    Brains in Bahrain (2002)
    39492    2     4  (1)    Rapid Match 25/10 (2002)
    39526    2     8  (1)    Match in Kazakhstan (2003)
    39529    2     6  (1)    FIDE Man - Machine WC (2003)
    39537    2     6  (1)    Dannemann Match (2003)
    39577    2     8  (1)    PlusGSM Rapid Match (2003)
    39764    2     8  (1)    George Marx Rapid Match (2003)
    39786    2     8  (1)    Polgar - Anand Rapid Match (2003)
    39952    2     4  (1)    Man - Machine World Chess Championship (2003)
    39532    2     4  (1)    CEM Man - Machine (2003)
    41138    2    10  (1)    Kramnik - Leko World Championship Match (2004)
    41562    2     6  (1)    Korchnoi Vs. Vallejo (2004)
    41807    2     8  (1)    Chess Classic Mainz (2004)
    44493    2     6  (1)    Karjakin - Nakamura Match (2004)
    40618    2     4  (1)    Cogas Energy Match (2004)
    49221    2     2  (1)    Norway Championship Playoff (2005)
    49269    2     6  (1)    Norway Championship Rapid Playoff (2005)
    46403    2     8  (1)    Leko & Adams (2005)
    46680    2     6  (1)    Adams - Hydra Match (2005)
    46794    2     4  (1)    Timman - Volokitin Rapid (2005)
    47788    2     8  (1)    CCM5 Rapid Match (2005)
    52158    2     8  (1)    Van Wely - Carlsen Match (2006)
    51869    2     4  (1)    Topalov - Nisipeanu Match (2006)
    52037    2    11  (1)    Kramnik - Topalov World Championship Match (2006)
    52438    2     2  (1)    Spassky - Karpov Rapid Match (2006)
    53649    2     8  (1)    Chess Classic Mainz (2006)
    53745    2     8  (1)    Leko - Karpov Match (2006)
    54297    2     4  (1)    Norwegian Championship Playoff (2006)
    54499    2     6  (1)    Kramnik - Deep Fritz (2006)
    55043    2     6  (1)    Blind Chess World Duel (2006)
    55402    2    18  (1)    Lahno - Negi Match (2006)
    63143    2    10  (1)    Clash of the Computer Titans (2007)
    61765    2     8  (1)    Leko - Kramnik Rapid Match (2007)
    61778    2     6  (1)    Spassky - Portisch Match (2007)
    61784    2     6  (1)    Kramnik - Aronian Rapid Match (2007)
    61860    2     5  (1)    Match of the Hopes (2007)
    61997    2    12  (1)    Candidates Match: Aronian - Carlsen (2007)
    61998    2     4  (1)    Candidates Match: Leko - Gurevich (2007)
    61999    2     6  (1)    Candidates Match: Ponomariov - Rublevsky (2007)
    62000    2     9  (1)    Candidates Match: Gelfand - Kasimdzhanov (2007)
    62001    2     4  (1)    Candidates Match: Bacrot - Kamsky (2007)
    62002    2     5  (1)    Candidates Match: Grischuk - Malakhov (2007)
    62003    2     6  (1)    Candidates Match: Polgar - Bareev (2007)
    62004    2     9  (1)    Candidates Match: Shirov - Adams (2007)
    62061    2     6  (1)    Candidates Match: Aronian - Shirov (2007)
    62062    2     5  (1)    Candidates Match: Bareev - Leko (2007)
    62063    2     5  (1)    Candidates Match: Gelfand - Kamsky (2007)
    62064    2     9  (1)    Candidates Match: Grischuk - Rublevsky (2007)
    62079    2     6  (1)    Deep Fritz - Deep Junior (2007)
    62637    2     4  (1)    Mainz Rapid Final (2007)
    63283    2    14  (1)    Ivanchuk - Leko Rapid Match (2007)
    65865    2     7  (1)    Anand - Kramnik World Championship Match (2008)
    64226    2     6  (1)    Japfa Match (2008)
    64290    2     8  (1)    Cez Chess Trophy Rapid (2008)
    64376    2     8  (1)    Carlsen - Leko Rapid Match (2008)
    64767    2    10  (1)    Karjakin - Short Rapid match (2008)
    66943    2     6  (1)    Ivanchuk - Leko Match (2009)
    69874    2     8  (1)    Kasparov - Karpov Blitz Match (2009)
    67161    2     4  (1)    Mate of the King (2009)
    67453    2     7  (1)    Topalov - Kamsky Match (2009)
    68097    2     6  (1)    Akobian - Shulman Rapid Match (2009)
    68343    2     8  (1)    Cez Trophy (2009)
    68344    2     8  (1)    Leko - Anand Rapid Match (2009)
    69708    2     6  (1)    Short - Efimenko Match (2009)
    69871    2     4  (1)    Kasparov - Karpov Rapid Match (2009)
    70364    2     8  (1)    Spassky - Korchnoi Match (2009)
    70397    2     4  (1)    Groningen Chess Festival Match (2009)
    70740    2     4  (1)    Polgar - Kaidanov Sicilian Theme Match (2010)
    72165    2     8  (1)    Leko - Gelfand Match (2010)
    72288    2     1  (1)    RAW Chess Challenge (2010)
    70979    2     9  (1)    Anand - Topalov World Chess Championship (2010)
    74004    2     6  (1)    Nakamura - Ponomariov Match (2011)
    74005    2     6  (1)    Finegold - Robson Match (2011)
    74053    2     6  (1)    XXIV Magistral de Ajedrez Ciudad de Leon (2011)
    74754    2     6  (1)    Navara - Laznicka Match (2011)
    75293    2     2  (1)    Kasparov - Lagrave Blitz Match (2011)
    75395    2     8  (1)    Kasparov - Short Blitz Match (2011)
    75839    2     8  (1)    Hou - Koneru Women's World Championship (2011)
    74009    2     6  (1)    World Championship Candidates Final (2011)
    85467    2     2  (1)    US Championship (group B play-off) (2011)
    77304    2     6  (1)    Kramnik - Aronian (2012)
    77342    2    13  (1)    Anand - Gelfand World Chess Championship (2012)
    78087    2     4  (1)    Short - Granda Match (2012)
    78097    2     6  (1)    XXV Ciudad de Leon: Topalov - Vallejo (2012)
    78099    2    14  (1)    Karpov - Seirawan Match (2012)
    78120    2     4  (1)    Cez Trophy: Navara - Svidler (2012)
    78580    2     8  (1)    Wojtaszek - Jobava Match (2012)
    78616    2     6  (1)    Shirov - Laznicka Match (2012)
    79184    2     6  (1)    Andreikin - Nepomniachtchi Match (2012)
    82160    2     7  (1)    Ushenina - Hou Women's World Championship (2013)
    82316    2     6  (1)    Topalov - Laznicka Match (2013)
    82667    2     6  (1)    Battle of the Generations (2013)
    82800    2     4  (1)    Karpov - Timman Match (2013)
    81142    2     6  (1)    Anand - Carlsen World Championship (2013)
    81352    2     7  (1)    Cez Trophy Navara - Hou Match (2013)
    81426    2     4  (1)    Carlsen - Predojevic Rapid Match (2013)
    84885    2     7  (1)    Carlsen - Anand World Championship (2014)
    84219    2     4  (1)    Cez Trophy Navara - Nakamura Match (2014)
    84547    2     8  (1)    Svidler - Gelfand Rapid (2014)
    84985    2     4  (1)    Nakamura-Aronian Match (2014)
    85038    2     2  (1)    Kasparov-Habu Tokyo Exhibition (2014)
    85468    2     2  (1)    US Championship (play-off) (2014)
    85621    2     2  (1)    Kasparov vs Short (Rapid) (2015)
    85622    2     8  (1)    Kasparov vs Short (Blitz) (2015)

Finally, here’s the list with 5 players. Since most RR’s like even numbers of players there are only a few such tournaments:

   82064    5    10  (10)    Aachen, 7th congress WDS (1868)
   80608    5    20  (10)    Copenhagen (1907)
   79475    5    20  (10)    Paris (1925)
   79541    5    20  (10)    Lake Hopatcong (1926)
   54194    5    49  (10)    FIDE World Championship Tournament (1948)
   75344    5     4  (10)    Topalov Clock Simul (2011)
   82369    5    20  (10)    Kings Tournament (2013)

I left the <FIDE WCC (1948)> tournament with only 49 games in. This was a missing game on my end, I hope there are very few of such problems. When I assembled the entire collection of <CG> tournament games I did have to stop and resync a number of times. It is possibly I just skipped a game in the restart.

Since I’m so good at mistakes, I’ve had to develop the skill of finding and correcting them as well. This technique looks for mistakes on both ends!

zz

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