A brief history of HRL Laboratories, one of the world’s most storied private research laboratoriesExplainerRyan Mandelbaum23 Jul 2026QuantumScience
Ponder This Challenge - September 2000 - Simplify sqrt expressionPuzzleDon Coppersmith01 Sep 2000Ponder This
Ponder This Challenge - July 2000 - 2-dimensional grid jumping coinsPuzzleDon Coppersmith01 Jul 2000Ponder This
Ponder This Challenge - May 2000 - Northwest to the north polePuzzleDon Coppersmith01 May 2000Ponder This
Ponder This Challenge - December 1999 - Zero-less multiply of 2**1999PuzzleDon Coppersmith01 Dec 1999Ponder This
Ponder This Challenge - November 1999 - Cutting a cube into a boxPuzzleDon Coppersmith01 Nov 1999Ponder This
Ponder This Challenge - October 1999 - Path 1 or 2 in directed graphPuzzleDon Coppersmith01 Oct 1999Ponder This
Ponder This Challenge - September 1999 - Recognizing dishesPuzzleDon Coppersmith01 Sep 1999Ponder This
Ponder This Challenge - August 1999 - Seating people on N+M tablesPuzzleDon Coppersmith01 Aug 1999Ponder This
Ponder This Challenge - June 1999 - 1 plus 1/7 of the medalsPuzzleDon Coppersmith01 Jun 1999Ponder This