Sudoku X

Sudoku X

⭐ 10.01,996 playes

Sudoku X challenges logic fans by adding diagonal constraints to the classic number-placement puzzle, offering a fresh layer of strategy for players seeking a more complex mental workout.

About Sudoku X

Sudoku X is a logic-based puzzle game that builds upon the traditional grid-filling formula. Players must fill a 9x9 grid with numbers from 1 to 9 so that every row, column, and 3x3 subgrid contains each digit exactly once. What distinguishes this version from the standard format is the addition of two main diagonal lines, which also require unique number sets to complete the puzzle.

This variation appeals to board game enthusiasts who find standard puzzles too predictable. The extra constraints demand more careful observation and advanced deduction techniques. It is an ideal choice for players who enjoy testing their spatial reasoning and numerical logic in a clean, browser-based environment that supports both desktop and mobile play.

  • Genre: Logic
  • Platform: Browser
  • Mode: Singleplayer
  • Developer: Freak X Games
  • Recommended age: 7+
  • Mobile support: Yes
  • Release: 09/03/2024

Why players like Sudoku X

  • The added diagonal rule provides a unique twist on familiar Sudoku mechanics.
  • Clean interface designed for focused, distraction-free thinking.
  • Suitable for both quick mental breaks and longer strategic sessions.
  • Full mobile compatibility allows for puzzle-solving on any device.

Instructions

mouse

How to play

Use your mouse or touch screen to select a cell and input the correct number. You must ensure that every row, column, and 3x3 square contains the numbers 1 through 9. Additionally, the two long diagonal paths forming an 'X' across the grid must also follow the same rule, meaning no digit can repeat within these highlighted lines.

Tips for beginners

  • Start by filling in the diagonals first, as they provide unique clues for intersecting rows and columns.
  • Look for cells where multiple constraints overlap to narrow down potential numbers more quickly.
  • Use the process of elimination to identify which digits are missing from the diagonal paths.