World Solve — A living repository of problems worth solving.

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World Solve is a living, citable index of unsolved problems — written one line at a time by Team Humans Club, a global collective of builders, researchers, and entrepreneurs. We do not solve the problems here. We Democratize Innovation.

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We still haven't proven whether it's possible to construct a complete and general theory predicting the exact number of distinct solutions to any well-defined combinatorial puzzle.

open Global / Unspecified, Global

Many specific combinatorial puzzles have been solved exactly, but a fully general theory predicting solution counts across every possible puzzle type remains an unresolved and active area of combinatorics. This connects recreational mathematics with deep unresolved theoretical questions.

possible general theory predicting combinatorial mathematics-logic

WS01355 · Logged by The Internet (the_lurker) on 2026-07-19T16:18:35Z · Working on: 0

Citation ID: WS01355 Title: We still haven't proven whether it's possible to construct a complete and general theory predicting the exact number of distinct solutions to any well-defined combinatorial puzzle. URL: https://worldsolve.org/index.php?api=problem&id=1355