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an American mathematician and computer scientist, along with [[Richard Greenblatt]] considered the co-founder of the [https://en.wikipedia.org/wiki/Hacker_culture hacker] community <ref>[https://en.wikipedia.org/wiki/Hackers:_Heroes_of_the_Computer_Revolution Hackers: Heroes of the Computer Revolution]</ref>. In the 60s, affiliated with [[Massachusetts Institute of Technology|MIT]], he worked for [https://en.wikipedia.org/wiki/Project_MAC%7CProject Project MAC] (Machine-Aided Cognition), where his contributions to [https://en.wikipedia.org/wiki/Computational_mathematics computational mathematics] and [[Bit-Twiddling]] including [[#HAKMEM|HAKMEM]] and [[Lisp#Maclisp|Maclisp]]. He helped Greenblatt with his chess program [[Mac Hack|Mac Hack VI]], and operated the [[PDP-6]] when [[Mac Hack#RobertQ|Robert Q]] played its first tournament game versus Carl Wagner.

In the 60s, affiliated with [[Massachusetts Institute of Technology|MIT]], he worked for [https://en.wikipedia.org/wiki/Project_MAC%7CProject Project MAC] (Machine-Aided Cognition), where his contributions to [https://en.wikipedia.org/wiki/Computational_mathematics computational mathematics] and [[Bit-Twiddling]] including [[#HAKMEM|HAKMEM]] and [[Lisp#Maclisp|Maclisp]]. He helped Greenblatt with his chess program [[Mac Hack|Mac Hack VI]], and operated the [[PDP-6]] when [[Mac Hack#RobertQ|Robert Q]] played its first tournament game versus Carl Wagner. In the 70s, Bill Gosper moved to [[Stanford University]] for some years, where he lectured and helped [[Donald Knuth]] to write volume II of [https://en.wikipedia.org/wiki/The_Art_of_Computer_Programming The Art of Computer Programming]. He has worked at or consulted for [https://en.wikipedia.org/wiki/PARC_%28company%29 Xerox PARC], [https://en.wikipedia.org/wiki/Symbolics Symbolics], [https://en.wikipedia.org/wiki/Wolfram_Research Wolfram Research], the [[Lawrence Livermore National Laboratory]], and [https://en.wikipedia.org/wiki/Macsyma Macsyma] <ref>[https://en.wikipedia.org/wiki/Bill_Gosper Bill Gosper from Wikipedia]</ref>. Bill Gosper created numerous [https://en.wikipedia.org/wiki/Packing_problem packing problem] puzzles such as the ''Twubblesome Twelve'' <ref>[http://gosper.org/ Twubblesome Twelve - a difficult puzzle] by Bill Gosper</ref>, and was interested in the [[John H. Conway|Conway's]] [https://en.wikipedia.org/wiki/Conway%27s_Game_of_Life|Game of Life]], where he found the [https://en.wikipedia.org/wiki/Gun_%28cellular_automaton%29|Glider Gun]] and originated the [https://en.wikipedia.org/wiki/Hashlife|Hashlife]] algorithm to speed up the computation of Life patterns <ref>[http://www-users.cs.york.ac.uk/~jowen/hashlife.html Gosper's Algorithm (Hashlife) explained]</ref>.

HAKMEM 70 <ref>[http://home.pipeline.com/~hbaker1/hakmem/games.html#item70 HAKMEM - GAMES: ITEM 70]</ref>, A neat chess problem, swiped from ''Chess for Fun and Chess for Blood'', by [https://en.wikipedia.org/wiki/Edward_Lasker Edward Lasker] <ref>[https://en.wikipedia.org/wiki/Edward_Lasker Edward Lasker] ('''1942,1962''') ''Chess for Fun and Chess for Blood''. Dover Publications; 2 Edition, ISBN-13: 978-0486201467, [http://www.amazon.com/Chess-Fun-Blood-Edward-Lasker/dp/0486201465 amazon]</ref>. White mates in three moves<ref>1.g8=N b5 2.Ne7 Kxb4 3.Nc6#</ref>: