What is Medium Samurai Sudoku?
Medium Samurai Sudoku (Gattai-5 / Five-Grid Sudoku) links five classic grids into one long-form puzzle where overlaps drive progress.
Each 9×9 sub-grid must satisfy classic rules, and every shared box must satisfy both the corner grid and the central grid simultaneously.
Medium Samurai Sudoku typically offers 30–35 given numbers per 9×9 grid—enough to start each sub-grid, but sparse enough that cross-grid propagation becomes essential.
Why Play Medium Samurai Sudoku Online?
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Whether you're seeking an immersive multi-grid challenge or want to test your endurance, this is the perfect place to play medium Samurai Sudoku online for free.
How to Play Medium Samurai Sudoku
Basic Rules
- •Five interconnected 9×9 grids form the Samurai layout
- •Each of the 5 sub-grids follows classic Sudoku rules: rows, columns, and 3×3 boxes must contain digits 1–9 without repetition
- •🤝 Overlap Rule: The four corner grids each share one 3×3 box with the central grid—numbers in these shared boxes must satisfy both grids simultaneously
Controls (Web Samurai Sudoku)
- •Click any cell across the 5 grids to select it
- •Use keyboard (1–9) to enter numbers
- •Press D to toggle notes (draft mode)
- •Use Delete/Backspace to clear cells
- •Navigate freely between all five sub-grids
- •Use hints when needed (limited per puzzle)
🧩 Medium Samurai Sudoku Solving Techniques
Medium Samurai Sudoku makes overlap-driven deductions essential.
Use shared boxes to transfer locked candidates and trigger cascades.
Key Techniques:
- ✓Shared Box Locked Candidates — Locks affect two grids
- ✓Cross-Grid Propagation — One placement triggers neighbors
- ✓Multi-Grid Pairs — Pairs can resolve across overlaps
- ✓Constraint Comparison — When a shared box has limited candidate placements, compare how each option affects the connected grids. Choose the option that leaves valid placements in both grids simultaneously.
- ✓Priority Targeting — Identify which of the five sub-grids has the fewest remaining candidates. Focus there first—solving a constrained grid often unlocks shared boxes that cascade into others.
- ✓Hidden Singles Across Grids — Forced by multi-grid constraints
- ✓Shared Box Triples — Triples in overlaps unlock both grids
Medium Samurai Sudoku FAQ
How difficult is Medium Samurai Sudoku compared to Easy?
Medium puzzles have 30–35 given numbers per grid (compared to 36–45 in Easy). Progress requires Shared Box Locked Candidates—where a locked set in one grid's overlap eliminates candidates in the connected grid—and Cross-Grid Propagation to cascade placements across all five sub-grids.
What strategies are effective in Medium Samurai Sudoku?
Use Shared Box Locked Candidates to transfer eliminations between corner and center grids. Look for Multi-Grid Pairs—two cells sharing two candidates across an overlap boundary. Spot Shared Box Triples to lock three candidates and unlock both connected grids simultaneously. Apply Constraint Comparison to evaluate options between overlapping grids.
How do overlapping grids affect solving strategy?
They create Cross-Grid Propagation opportunities—a single placement in a shared box can trigger a cascade of singles across two grids. Shared Box Locked Candidates enable eliminations that wouldn't be possible when solving each grid in isolation.
Why do Medium Samurai Sudoku puzzles take longer to solve?
Because progress often depends on switching between grids and tracking multiple constraints simultaneously.
Should I use pencil marks for Samurai Sudoku?
Yes, especially in Medium puzzles where overlapping regions create multiple candidate possibilities.
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Start your epic solving journey with our free medium Samurai Sudoku puzzles. No signup, no distractions—just five interconnected grids of pure logic satisfaction.
👉 Play now and conquer the ultimate multi-grid challenge today.You May Also Like
- •Easy Samurai Sudoku — A gentler five-grid intro
- •Hard Samurai Sudoku — Deep overlap-driven chains
- •Classic Sudoku — Prefer a single 9×9 grid?
- •Killer Sudoku — Add cage sums for arithmetic logic
- •Jigsaw Sudoku — Try irregular nonets and unique layouts
- •Sudoku Solver — Stuck? Get hints
- •Printable Sudoku — Take puzzles offline