Go
There are estimated to be about 
possible positions on a 
board (Flammenkamp).The number of 
-move Go games are 1, 362, 130683, 47046242, ... (Sloane's A007565).
References
Beeler, M.; Gosper, R. W.; and Schroeppel, R. HAKMEM. Cambridge, MA: MIT Artificial Intelligence Laboratory, Memo AIM-239, Item 96, Feb. 1972.
Flammenkamp, A. ``A Short, Concise Ruleset of Go.'' http://www.uni-bielefeld.de/~achim/gorules.html.
Kraitchik, M. ``Go.'' §12.4 in Mathematical Recreations. New York: W. W. Norton, pp. 279-280, 1942.
Sloane, N. J. A. SequenceA007565/M5447in ``An On-Line Version of the Encyclopedia of Integer Sequences.''http://www.research.att.com/~njas/sequences/eisonline.html and Sloane, N. J. A. and Plouffe, S.The Encyclopedia of Integer Sequences. San Diego: Academic Press, 1995.
- Greater
- Greater Than/Less Than Symbol
- Greatest Common Denominator
- Greatest Common Divisor
- Greatest Common Divisor Theorem
- Greatest Common Factor
- Greatest Integer Function
- Greatest Lower Bound
- Greatest Prime Factor
- Great Hexacronic Icositetrahedron
- Great Hexagonal Hexecontahedron
- Great Icosacronic Hexecontahedron
- Great Icosahedron
- Great Icosahedron-Great Stellated Dodecahedron Compound
- Great Icosicosidodecahedron
- Great Icosidodecahedron
- Great Icosihemidodecacron
- Great Icosihemidodecahedron
- Great Inverted Pentagonal Hexecontahedron
- Great Inverted Retrosnub Icosidodecahedron
- Great Inverted Snub Icosidodecahedron
- Great Pentagonal Hexecontahedron
- Great Pentagrammic Hexecontahedron
- Great Pentakis Dodecahedron
- Great Quasitruncated Icosidodecahedron