kdp · samurai sudoku books
Samurai Sudoku books for KDP, ready to upload
Samurai sudoku puts five sudoku grids on one page: the middle grid shares each of its corner boxes with a corner grid, so a digit found in one grid helps solve the next. Pick the level, the number of puzzles and the trim size. You get the interior PDF with every solution, the full wrap cover with the spine sized to the page count, and a signed check of both files against KDP’s paperback specs. One price for any samurai sudoku book: 500 credits, from $3.30 in the big pack.
The sample book, as delivered
How every samurai sudoku is checked
- One solution for the whole board. A second program, written apart from the one that makes the puzzles, counts the solutions of all 369 squares at once, the shared boxes counted in both of their grids, and finds exactly one: the one printed at the back.
- One solution for every grid alone. Each of the five grids has exactly one solution from its own starting digits, so no grid leans on a guess and no corner is left to luck.
- Levels that hold. Easy and medium are solved square by square with singles. Hard needs locked candidates or pairs, and our solver confirms that singles alone do not finish the board, even with the help the shared boxes give.
- Full solutions at the back, the starting digits in bold: four boards to a page in regular print on 8 in and wider pages, one to a page in large print.
What you choose
| Level | Easy (at least 36 starting digits in every grid), medium (fewer starting digits, still solved with singles) or hard (needs locked candidates or pairs) |
|---|---|
| Puzzles | One board to a page: 10 to 150 in large print, 13 to 150 on 7 × 10 in, 16 to 150 on 8 × 10 in and larger; hard books up to 75; the form shows the range for each size and level |
| Large print | On by default, on 8.5 × 11 in and A4: starting digits of 16 pt and up in squares of about 9 mm |
| Trim size | 7 × 10, 8 × 10, 8.5 × 11 in or A4 (a 21 square board needs the room; 6 × 9 is too small for squares you can write in); white, cream or groundwood paper |
| Title and author | Your title, subtitle and name or imprint, printed on the cover, the spine and the title page |
| Cover color | The kind’s own color, or one of sixteen others, so a series of yours looks like no one else’s |
| Cover layout | The puzzle above the title, the title above the puzzle, or the title on a card over the puzzle |
| Seed | The same seed and settings make exactly the same book again; left empty, every book is new |
Questions
What is a samurai sudoku?
Five ordinary 9 × 9 sudoku grids laid out like the five on a die. The middle grid shares each of its four corner boxes with one of the corner grids, so those 36 squares belong to two grids at once and their digits must work in both. Every row, column and box of every grid holds the digits 1 to 9 once. The book’s how-to page explains the rules on one page.
How is it different from a sudoku book?
A sudoku book has one grid a puzzle, two or four to a page. A samurai sudoku is five grids that solve together, one big puzzle to a page, so each one lasts longer: a book of 100 holds 500 grids’ worth of solving.
Will KDP accept the files?
Each book passes our check against KDP’s published paperback specs before you can download it: page size, page count, embedded fonts, margins and gutter for the page count, line weight, blank pages, cover size and spine. If KDP still rejects the files within 30 days, the book’s 500 credits go back to your key.
Can I make a series?
Yes. One book per level with your series name in the title, or the same level with new boards in each volume: every book without a seed gets new puzzles. Pick a cover color and layout for the series on the form, so its covers stand apart from other people’s.
What goes in the listing?
listing.txt in the ZIP has a title, subtitle, description, seven keyword ideas and the print options to pick on KDP. The preview folder has six images of real pages for your listing.
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