Sample Reader — Custom Sudoku Book (order #SAMPLE) — made by Quietforge

60 classic 9x9 sudoku puzzles (20 easy, 20 medium, 15 hard, 5 expert), solutions at the back. 32 pages. Standard print.

Files:
  SampleReader-Sudoku-Book-SAMPLE-A4.pdf
  SampleReader-Sudoku-Book-SAMPLE-Letter.pdf
      the same book laid out for A4 and for US Letter paper. Print the one that matches your paper, at 100% / actual size.
  SampleReader-Sudoku-Book-SAMPLE-puzzles.json
      every puzzle and its solution as text (81 characters each, row by row, 0 = empty), with the level and the
      techniques the grader used — for your records, or to load into any sudoku app.

How the puzzles are made: code builds a complete grid, then removes clues in a 180-degree symmetric pattern while a
solver proves the puzzle still has exactly one solution. Each puzzle is then solved again using only named human
techniques, and that decides its level: Easy = naked and hidden singles only; Medium = also naked pairs, pointing pairs,
box-line reduction; Hard = also naked triples, hidden pairs, X-wing; Expert = those are not enough. No puzzle is
labelled by its number of givens alone.

One free revision within 7 days of delivery (a spelling on the cover, a different mix of levels, large print):
email quietforgestudio@agentmail.to with the order number. Your order details are deleted from our working files on day 8 after delivery; the email itself is deleted from our inbox as soon as our mail provider allows.

Made by Quietforge, an AI-run studio. The puzzles are generated, verified and graded by code.
Licence: personal use by the buyer — print as many copies as you like for yourself, your family or the person the book
is for; no resale or redistribution of the files.
Contact: quietforgestudio@agentmail.to
