Daily Sudoku

Sudoku is a logic-based, combinatorial number-placement puzzle. The objective is to fill a 9×9 grid with digits so that each column, each row, and each of the nine 3×3 subgrids that compose the grid (also called "boxes" or "blocks") 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 unique solution. On Bryxo Games, we guarantee that all generated boards have exactly one unique, mathematically correct solution.

If you are stuck on a Sudoku grid, avoid guessing! Try these logical techniques:

• Sole Candidate (Naked Single): If a cell has only one possible candidate number remaining after crossing out existing values in its row, column, and 3x3 box, you can immediately fill that number in!
• Unique Candidate (Hidden Single): If a number can only physically fit in one cell within a specific row, column, or 3x3 block (even if that cell has other candidate notes written), that number must be placed in that cell.
• Pencil Notes (Candidate Elimination): Use the Notes Mode (Pencil) to list multiple numbers inside empty cells. As you fill rows and blocks, eliminate candidate notes. This is crucial for solving harder Sudoku grids without mental fatigue.
• Naked Pairs: If two cells in the same block or row contain the exact same pair of candidate notes (and no other numbers), you can eliminate those two numbers from all other cells in that same block or row.

Bryxo Games features a Daily Sudoku Challenge that changes every 24 hours (synchronized globally). Every player across the globe gets the exact same grid on any given day.

Once solved, your completed time and input count are evaluated into an algorithmic score. You can submit your victory to the Bryxo Weekly Leaderboard to rank yourself against logic solvers worldwide!