A089956 Number of chess games that end in check (but not checkmate) after exactly n plies.

0, 0, 0, 12, 461, 27004, 798271, 32668081, 959129557, 35695709940, 1078854669486, 39147687661803, 1224448528652016, 44252532348552226

Offset

0,4

Links

Table of n, a(n) for n=0..13.

F. Labelle, Statistics on chess games

Index entries for sequences related to number of chess games

Crossrefs

Cf. A079485, A048987.

Sequence in context: A221032 A221496 A302945 * A178217 A262584 A350154

Adjacent sequences: A089953 A089954 A089955 * A089957 A089958 A089959

Keyword

nonn,hard,fini

Author

François Labelle, Jan 12 2004

Extensions

a(11) from François Labelle, Jul 25 2004, who thanks Joost de Heer for providing computer time.

a(12) from François Labelle, Mar 04 2012

a(13) from François Labelle, Aug 15 2017

Status

approved