Color Sudoku Crazy

Crazy Color Sudoku is the deepest challenge in the color set — near-empty boxes, long deduction chains and no forgiveness for careless placements. Every cell takes one of nine symbols: .

How to play Color Sudoku

Pick from the nine-color palette so that every row, column and 3×3 box ends up holding all nine colors, each exactly once.

• Each row shows all nine colors exactly once.
• Each column shows all nine colors exactly once.
• Each 3×3 box shows all nine colors exactly once.
• Prefilled colors are fixed clues — everything else you deduce.

Crazy Sudoku tips

Crazy boards are solved by structure, not by luck:

• Chain candidates. Link strong relationships — units where a symbol fits only two cells — and follow where a contradiction propagates. Chains are the bread and butter of crazy boards.
• Solve regions, not cells. Target a whole box or line: enumerate its missing symbols and prove where each one must live before you touch the rest of the grid.
• Respect the mistake counter. Crazy punishes rushing. Verify each placement against row, column and box before committing, and when you do slip, reread the chain that produced the error.

About Color Sudoku

Color Sudoku replaces symbols with a palette of nine colors. Deduction becomes visual — a repeated hue catches the eye faster than a repeated digit — which makes it a favorite for kids and for solvers who want a change of sense, not of logic.

More Color Sudoku levels

Color Sudoku Easy · Color Sudoku Medium · Color Sudoku Hard · Color Sudoku Expert

About Sudoku

Sudoku is a logic-based, combinatorial number-placement puzzle. In classic Sudoku, the goal is to fill a 9 x 9 grid with digits so that each column, each row, and each of the nine 3 x 3 subgrids that compose the grid contains all of the digits from 1 to 9. The puzzle setter provides a partially completed grid, which for a well-posed puzzle has a single solution.

About Sudokuing

Sudokuing(Sudoku'ing) is an online Sudoku gaming website that focuses on providing a user-friendly, variety of themed Sudoku puzzles for everyone to enjoy.