We don't know whether it's possible to guarantee an efficient method for solving every possible puzzle in the broad family of constraint satisfaction problems.
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Mathematics & Logic
Some constraint puzzles, like certain scheduling or coloring problems, can be solved efficiently under specific conditions, but a fully general and efficient method covering every possible case remains unresolved. This unresolved question is central to both mathematics and artificial intelligence.
Team Humans Club. (2026). Problem WS01329: We don't know whether it's possible to guarantee an efficient method for solving every possible puzzle in the broad family of constraint satisfaction problems.. World Solve. Retrieved 20 Jul 2026, from https://worldsolve.org/index.php?id=1329