My working directory on attempting to solve the Libre primus utilizing the power of the vibes.
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Updated
Jun 29, 2026 - Python
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Solvers, records, and negative results for the never-solved gold challenge of the Diamond Dilemma (1988 prize puzzle): 142/160 tiles placed perfectly, 208/240 edges matched, and a documented map of every approach ( exhaustive C solver with CP-SAT oracle, large-neighbourhood optimizers,...)..
puzzle constraint-programming local-search combinatorial-optimization or-tools eternity2 unsolved cp-sat-or-tools edge-matching-puzzle eternity-ii
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Aug 9, 2026 - Python
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