Sudoku University
Sudoku hints that explain the full argument, step by step
by Driftwood Forge
Summary
A Sudoku trainer whose hints unfold in stages — premise, marks, region, eliminations, then the whole argument in plain English — across 25+ techniques from Full House to Multi-Coloring. Thousands of generated puzzles carry Sudoku Explainer-compatible ratings, and Snyder notation, manual and auto candidates, a chain-line overlay and a compose mode are all built in.
- 25+ techniques, Novice through Master difficulty ladder
- SE-compatible difficulty ratings on every puzzle
- Compose mode: enter any puzzle for the solver
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