PSPACE-complete problems
= PSPACE-complete problems
{wiki=Category:PSPACE-complete_problems}
PSPACE-complete problems are a class of decision problems that are both in the complexity class PSPACE and are as "hard" as the hardest problems in PSPACE. Here’s a breakdown of relevant concepts: 1. **Complexity Classes**: - **PSPACE**: This class includes all decision problems that can be solved by a Turing machine using a polynomial amount of space.