Daily Samurai Sudoku

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Try a different daily sudoku variant. Every variant uses the same system — one new puzzle per day, same for everyone, with streaks and sharing.

Daily Samurai Sudoku: A Free Five-Grid Puzzle Every Day

Welcome to Daily Samurai Sudoku — a colossal new five-grid puzzle that appears every day at midnight. Unlike our unlimited Samurai Sudoku mode, the daily version gives you one puzzle per day identical for every player worldwide. It's the most epic variant in our daily lineup: five overlapping 9×9 grids arranged in a cross pattern, totalling 369 unique cells — all wrapped in a shared daily challenge where you can compare times, build streaks, and share results without spoilers.

Samurai Sudoku — sometimes called Gattai-5 — takes the classic 9×9 puzzle and amplifies it dramatically. Five standard Sudoku grids overlap so that each corner grid shares one 3×3 box with the central grid. Our daily version follows the tradition of newspaper puzzle columns: one puzzle per day, progressively harder through the week, with modern features like streak tracking, a full archive, and instant sharing.

⚔️ What Makes Daily Samurai Sudoku Special?

Daily Samurai Sudoku combines the social hook of a shared daily puzzle (think Wordle) with the sheer scale and interconnected logic of Samurai Sudoku. Every player faces the same five grids, the same givens, the same solution — the comparison is meaningful when you share your results.

The four overlap zones are where Samurai Sudoku truly shines. Each overlap is a 3×3 box that belongs to two 9×9 grids simultaneously. A digit placed in an overlap cell must satisfy all row, column, and box constraints of both parent grids. This chain of dependencies means solving one grid often unlocks cells in its neighbours — a cascade effect unique to Samurai puzzles.

📋 Rules of Daily Samurai Sudoku

1. Five grids — Five 9×9 Sudoku grids arranged in a cross: four in the corners and one in the centre.
2. Standard Sudoku rules — Within each 9×9 grid, every row, column, and 3×3 box must contain 1–9 exactly once.
3. Overlap constraint — The four corner grids each share one 3×3 box with the central grid. Cells in these overlapping boxes must satisfy both grids.
4. One solution — The puzzle has exactly one valid solution across all five grids.

⭐ Weekly Difficulty Progression

• Monday & Tuesday — Easy — More givens across all five grids. Great for Samurai beginners.
• Wednesday & Thursday — Medium — Fewer givens; overlap logic becomes essential.
• Friday & Saturday — Hard — Sparse givens, advanced cross-grid deductions required.
• Sunday — Expert — Minimal givens; every overlap cell counts.

🧠 Key Strategies for Samurai Sudoku

• Overlap-first approach — The four overlap boxes are constrained by two grids each. Prioritise scanning these for naked singles and hidden singles.
• Centre grid leverage — The central grid touches all four corners. Progress in the centre often unlocks cells in every other grid.
• Cross-grid scanning — When stuck in one grid, switch to its neighbour. Solving cells in the non-overlap area of a corner grid can reveal new information for the centre grid via the shared box.
• Work outward from the centre — On harder puzzles, focus centre → overlaps → corners. This maximises the information flowing through shared boxes.

📊 Streaks and Sharing

Your streak counts the consecutive days you've completed the daily Samurai Sudoku. Solve today's puzzle and your streak grows. Miss a day and it resets, but your best streak is always recorded. Press Share after solving to copy a spoiler-free result card.

📅 The Puzzle Archive

Missed a day? Use the calendar below the puzzle to select a past date and replay that day's Samurai Sudoku. Archive puzzles don't affect your current streak.

🖨️ Want Unlimited or Printable Samurai Sudoku?

If one puzzle per day isn't enough, generate unlimited puzzles on our Samurai Sudoku page. Prefer paper? Download free sheets from our printable sudoku section.