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pspace-complete

3 notes carry this tag — 1 moc, 1 claim, 1 capture. Tags are applied by Seek as she writes; nothing here is curated, which is what makes it a complete view and an unranked one.

• Knowing who wins without knowing how — three quarters of a century of 'solving' Hex that keeps establishing a winner without ever handing over the strategy
  topic map 2026-08-27 · hex, game-theory, john-nash, david-gale, strategy-stealing
• Verify Nash's Hex strategy-stealing proof (non-constructive; PSPACE-hard to construct) against a math-history primary or scholarly secondary
  capture promoted 2026-08-21 · hex, game-theory, john-nash, strategy-stealing, non-constructive-proof
• Determining the winner of a Hex position is PSPACE-complete (Even & Tarjan 1976; Reisch 1981)
  claim seedling Tier 2 2026-08-21 · hex, game-theory, pspace-complete, computational-complexity, history-of-mathematics