Sudoku Puzzle Solver
Constraint system
A solver built around logic and step-by-step demonstration rather than decoration.

Good ideas don’t require force.
A solver built around logic and step-by-step demonstration rather than decoration.
Complete, deterministic system with no exploitable states.
Decades-old, real-time interaction built with controlled behavior.
Clean input/output system with no friction.
Extends utility to broader users. Need special paper and printer.
Focused tool solving a real usage problem.
One of the first things I wrote. Measures instead of guessing.