Who this level is for
Giant is a sparse-clue challenge for players who want a longer, highly focused 9x9 session.
SudokuIQ puzzle
Play Giant Sudoku online
Solve a free giant Sudoku with notes, smart hints, coaching and local progress. Each board is generated from a valid solved grid and checked for a unique solution.
Logic you will use
Candidate management, locked candidates and paired eliminations matter because fewer starting clues expose fewer immediate placements.
How to practise
Work systematically by digit or by box, and use notes to preserve deductions between longer chains of logic.
Is Giant a larger grid?
No. It remains a standard 9x9 Sudoku; the name describes the longer challenge created by its sparse clue pattern.
How should I start a sparse puzzle?
Scan one digit across all boxes, record candidates, and look for a box where row or column restrictions leave only one position.