Quantum computers take a step into real materials science
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Ponder This Challenge - December 2014 - A matrix with 29 solutions
PuzzleGadi Aleksandrowicz- Ponder This
Ponder This Challenge - November 2014 - Distribution using two coins
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Ponder This Challenge - October 2014 - Last digits of 2^3^4^5^6^7^8^9
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Ponder This Challenge - September 2014 - 2^3^4^5 leading digit on base e
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Ponder This Challenge - August 2014 - Biased binary search
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Ponder This Challenge - July 2014 - Pebbles game on a tetrahedron
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Ponder This Challenge - June 2014 - 25 intersecting Cubes
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Ponder This Challenge - May 2014 - Annihilation probability of 1D gun
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Ponder This Challenge - April 2014 - 1D version of the 2048 game
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Ponder This Challenge - March 2014 - Toggling lamps
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Ponder This Challenge - February 2014 - Juxtaposing a 4D pyramids
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Ponder This Challenge - January 2014 - Boolean 21x6 matrix
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Ponder This Challenge - December 2013 - Gifts graph
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Ponder This Challenge - November 2013 - K-dim faces of d-dim hypercube
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Ponder This Challenge - October 2013 - B&W coloring of a chess board
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Ponder This Challenge - September 2013 - Bob and Alice vs the casino
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