5 Shortz Era entries found. Click any date for context.
See the dictionary definition for perpetual motion.
|Sunday, October 13, 2013||98A||Violation of the first and second laws of thermodynamics||Jeff Chen|
|Tuesday, August 13, 2002||55A||Mechanical impossibility||Robert Malinow|
|Monday, November 1, 1999||36A||Inventor's impossible goal||Robert Frank|
|Tuesday, May 19, 1998||20A||"Impossible" achievement||William S. Cotter|
|Saturday, September 23, 1995||32A||Noted Paganini composition||Martin Ashwood-Smith|
11 results for PERPETUALMOTION from older pre-Shortz puzzles.
|Saturday, December 13, 1986||20A||Inventor's "impossible dream"||Ernst Theimer||Maleska|
|Monday, June 29, 1981||24A||Ancient scientific quest||Christy Ridley||Maleska|
|Wednesday, January 24, 1979||2D||An impossible dream||Jean J. Davison||Maleska|
|Saturday, March 11, 1978||15A||Inventor's dream||William Lutwiniak||Maleska|
|Tuesday, May 31, 1977||7D||Asset of an ideal machine||Herb L. Risteen||Maleska|
|Thursday, August 7, 1975||17A||Inventor's dream||Bert Beaman||Weng|
|Sunday, November 5, 1967||109A||Inventor's dream.||Bert Beaman||Farrar|
|Saturday, March 23, 1963||20A||Physicist's fascination.||George Laczko||Farrar|
|Wednesday, September 13, 1961||20A||One of the "impossibles."||Unknown||Farrar|
|Saturday, November 29, 1958||17A||Mechanical impossibility.||Jules Arensberg||Farrar|
|Friday, September 14, 1956||52A||Mechanical mirage.||Bernice Gordon||Farrar|