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

Author

François Labelle, Jan 12 2004

Keywords

• nonn
• hard
• fini

Links

• F. Labelle, Statistics on chess games
• Index entries for sequences related to number of chess games

Crossrefs

Cf. A079485, A048987.

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