About SudokuIQ
Built and puzzle-tested by Chamara S. Kodikara
SudokuIQ connects polished browser games, two Android apps, cross-device continuation and a practical learning Academy.
How puzzles are made
Sudoku boards begin with a valid solved grid. Clues are removed according to the selected level, and the generator checks that the published puzzle still has one solution. Difficulty is presented through the same ladder used by the Android experience.
Coaching philosophy
Hints should explain a logical next move instead of replacing thought with a final answer. Notes, candidate removal, boosts and Academy lessons are designed around that principle.
Android connection
The Classic Sudoku and Killer Sudoku apps provide offline play and native phone controls. SudokuIQ’s transfer feature lets players continue supported games on another device.
Corrections and contact
Found a puzzle, lesson or accessibility issue? Email kodikaracs@gmail.com. Useful corrections are reviewed and incorporated into future updates.
Puzzle integrity
Every published Classic Sudoku is generated from a complete valid grid and checked for a single solution after clues are removed. Killer cages are built from the solved grid so their totals remain internally consistent.
Explainable assistance
SudokuIQ separates a quick hint from a full coaching explanation. The Academy uses the same board language to show the target cell, relevant units, candidates that are ruled out and the reason a move is valid.
Privacy-aware continuation
Device transfer is optional and code based. A temporary game state is stored only when a player asks to move a puzzle, while ordinary board preferences and progress remain in browser storage.
Advertising independence
Gameplay, learning material and puzzle access do not depend on clicking an advertisement. Advertising areas are kept separate from board controls to reduce accidental interaction.