

A079485


Number of chess games that end in checkmate after exactly n plies.


6



0, 0, 0, 0, 8, 347, 10828, 435767, 9852036, 400191963, 8790619155, 362290010907, 8361091858959, 346742245764219
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OFFSET

0,5


COMMENTS

a(6) was computed in 1897.


REFERENCES

H. Simpson, Chess Review, JanFeb 1982.


LINKS

Table of n, a(n) for n=0..13.
F. Labelle, Statistics on chess games
R. P. Stanley, Extremal [Chess] Problems
M. Willey, Iowa Chess Homepage.
World Chess Federation, Laws of Chess: For competitions starting on or after 1 July 2014
J. Young, Opening Tree Statistics.
Index entries for sequences related to number of chess games


CROSSREFS

Cf. A006494, A048987, A089956.
Sequence in context: A016875 A046244 A193225 * A193504 A158363 A221044
Adjacent sequences: A079482 A079483 A079484 * A079486 A079487 A079488


KEYWORD

nonn,hard,nice,fini


AUTHOR

N. J. A. Sloane, Jan 17 2003


EXTENSIONS

More terms from Richard Bean (rwb(AT)eskimo.com), Jun 08 2003
a(9) and a(10) from François Labelle, Jan 12 2004
a(11) from François Labelle, Jul 25 2004, who thanks Joost de Heer for providing computer time.
Link to Extremal [Chess] Problems of R. P. Stanley corrected by Johannes W. Meijer, Mar 01 2009
a(12) from François Labelle, Mar 04 2012
a(13) from François Labelle, Aug 15 2017


STATUS

approved



