The 1-click cloud engine that generates publication-ready "Find-the-Number" deduction puzzle books for Amazon KDP and Etsy—complete with mathematically verified single-solution answer keys.
100% Verified Logic: Eliminates unsolvable puzzles and protects your books from 1-star reviews.
KDP-Ready Formatting: Built-in gutters, margins, bleeds, and senior-friendly 18pt Large Print.
Keep 100% of Your Profits: Full commercial license included with zero monthly subscriptions.
"You can build whole puzzle experiences around a story."
"It isn't just a tool that spits out a few random puzzles... you can actually use it to build a proper puzzle experience around a story or concept. There is a lot of flexibility once you start digging in."
"Knowing each puzzle is checked for accuracy gives me confidence."
"The interface is clean and intuitive. What impressed me most was the variety of clue styles, page layouts, and borders. The verification feature saves me a considerable amount of time."
"A game changer for KDP publishers."
"You can create 100s of puzzle books in different niches targeting different Amazon categories. There are so many basic tools out there, but it's hard to find something this legit."
Jikan Nazo is a cloud-based software created by Ike Paz, Luke Bowes, and Marina Matic. It automates the generation of complete "Find-the-Number" mystery logic deduction puzzle books tailored for Amazon Kindle Direct Publishing (KDP) and printable storefronts like Etsy.
Instead of generic, oversaturated puzzles (such as plain Sudoku or standard word searches), Jikan Nazo generates a whodunit-style deduction game:
1. Solvers are given a Number Register (a curated grid of suspects/numbers).
2. A chain of logical deduction clues is provided (e.g., "The number you want is even," "Its digits sum to greater than 15," "It does not contain the digit 7").
3. Solvers follow the clue trail, eliminating innocent numbers one by one until only one target number remains.
4. The software generates the entire publication-ready book interior: front matter, instructions, deduction registers, clue blocks, and cipher-coded answer keys.
Mathematically Verified Logic Engine
3 Difficulty Tiers (Gentle, Standard, Fiendish)
18pt Large Print Support
Coded & Proof-Stack Answer Keys
KDP Pre-Flight Safety Checks
Seeded Project Memory
Tests every puzzle to ensure exactly one unique solution exists, completely avoiding 1-star reviews from angry puzzle solvers.
Allows you to create graduated puzzle volumes and ladder series to drive repeat buyer loyalty.
Built-in toggle to format puzzles for adult and senior puzzle fans—one of the highest-converting demographics on KDP.
Includes cipher-coded solutions to prevent accidental spoilers, along with a clue-by-clue elimination log.
Automatically formats gutters, margins, and mirrored pages, preventing interior upload rejections by Amazon.
Past projects are saved with a seed identifier, allowing you to reload and reformat layouts without losing the original puzzles.
Jikan Nazo is offered through the vendor's sales platform, and refund requests are handled directly by the product vendor in accordance with their stated refund policy. Before purchasing, it's a good idea to review the current refund terms on the official sales page so you understand the eligibility requirements, refund period, and any applicable conditions.
A clear satisfaction guarantee can provide added confidence when evaluating a software purchase, especially for first-time users. If you have questions about refunds, product access, or support, you can contact the vendor directly using the support information provided with your purchase. Always refer to the official sales page for the most up-to-date guarantee and refund details.
Uncrowded Niche: Capitalizes on high-intent mystery and logic buyers without fighting massive competition on basic Sudoku terms.
Zero Broken Puzzles: The automated single-solution verification stops unsolvable logic dead ends.
100% Cloud-Based: Works on Mac, Windows, Chromebook, or tablets with no local installation required.
One-Time Cost: No ongoing software subscription fees.
Complete Book Output: Produces the entire interior—cover page, rules, puzzles, and answer keys.
Front-End PDF Cap: The $19 base version has a limit of 100 PDF exports per month (sufficient for most users, but heavy publishers will require
OTO 1).
Book Cover Not Included: The tool formats interior manuscripts; exterior book covers must be created separately via tools like Canva or Photoshop.
No. The engine automatically handles clue generation, logic verification, and page layout formatting.
Jikan Nazo is 100% cloud-based. It runs inside any modern browser on Mac, Windows, Linux, or Chromebook.
The tool generates two forms of answer keys: an anti-spoiler cipher key and a detailed elimination log showing which clue ruled out which number.
The software supports standard Amazon KDP trim sizes, with 8.5" x 11" and 6" x 9" being the most popular.
No recurring subscription fees apply when you buy during the launch window.
The current sales page states that all sales are final because the product provides immediate digital access.
Your payment is 100% safe and secure. All orders for Jikan Nazo are processed through official 256-bit SSL-encrypted checkout gateways (supporting PayPal and all major credit cards). Your sensitive financial information is never stored or shared, ensuring a smooth and completely risk-free transaction.
Jikan Nazo delivers instant, immediate cloud access to the entire puzzle engine and commercial publishing assets the moment you complete your order. You can start creating verified, high-earning mystery puzzle books for Amazon KDP and Etsy immediately. Grab your commercial license today to lock in this unbeatable launch-pricing advantage!