Daily Practice Studio
- Added a daily candidate-analysis exercise with complete row, column and box evidence.
- Added private browser-based practice streaks without requiring an account.
- Connected daily drills to the Logic Lab, Academy and live puzzles.
Product journal
SudokuIQ keeps improving.
This public log records meaningful changes to puzzle quality, learning tools, accessibility, reliability and the player experience. Small cosmetic edits are intentionally left out.
A calmer, consistent visual system
- Unified the site around ivory surfaces, deep teal actions and restrained learning accents.
- Improved focus, board and coaching colour consistency in the light theme.
- Checked Home, Academy and gameplay layouts across desktop and mobile widths.
Deeper learning and crawler-visible guidance
- Expanded level-specific solving guidance for all seven Classic difficulties.
- Added a complete Killer Sudoku method, worked example and safe solving routine.
- Added the private Logic Lab for candidate analysis and supported technique detection.
How improvements are chosen
SudokuIQ prioritises incorrect logic, puzzle validity, accessibility barriers and confusing interactions before decorative additions. Corrections can be reported directly to the creator.