6x6 Easy - Set 2

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X-Sudoku on a 6x6 grid at Easy difficulty. The diagonal constraint adds a fresh layer to the compact 2x3 box format, solvable in 3-5 minutes.

How to Use This Worksheet

  • Print: Click the print button to get a clean printout perfect for students
  • Practice: Complete the practice exercises
  • Check Answers: Click "Show Answers" to verify responses
  • Download PDF: Save a copy for offline use or printing later

Learning Benefits

This sudoku puzzle helps students develop vocabulary, spelling, and reading comprehension skills. Regular practice builds confidence and fluency.

X-Sudoku — Free Online & Printable

X-Sudoku adds a diagonal constraint to the classic sudoku rules. Both main diagonals — running from top-left to bottom-right and from top-right to bottom-left — must each contain the numbers 1 through 9 without repetition. This is the most accessible sudoku variant: the two extra constraints actually make many cells easier to deduce, since numbers on the diagonals are additionally restricted. If you''ve mastered standard sudoku and want a fresh twist without learning complex new rules, X-Sudoku (also called Diagonal Sudoku) is the ideal starting point.

About 6x6 Grid

The 6x6 grid strikes a balance between accessibility and depth. With 36 cells in 2x3 boxes, puzzles take 3 to 10 minutes depending on difficulty. The 6x6 is large enough to showcase variant rules meaningfully — Killer cages have room to create genuine arithmetic puzzles, Windoku windows overlap in interesting ways — while remaining completable in a single sitting. Many players find the 6x6 their "daily driver" format: challenging enough to be satisfying, short enough to fit into a break.

Easy Difficulty

Easy difficulty assumes you already know standard sudoku and are learning a new variant. Puzzles are designed so that the variant''s unique rule creates clear, immediate deductions: in X-Sudoku Easy, most diagonal cells can be filled using only the diagonal constraint plus row/column logic. Solving technique required: naked singles (cells with only one possible value) and direct constraint elimination. No candidate markup needed. Average time: 3-8 minutes for 9x9, 30-90 seconds for 4x4.

How to Get Started

  1. Choose "New Puzzle" to generate a fresh puzzle with a unique solution
  2. Click or tap cells to enter numbers (1-6 for 6x6)
  3. Use the constraint highlights to track which numbers are still available
  4. Print the puzzle if you prefer solving on paper
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