FAQ

PaperMind Puzzles is a professional puzzle generation platform that creates high-quality logic puzzles including Sudoku (with variants), Hitori, Futoshiki, Akari, Nurikabe, and Kakuro. Generate custom puzzles in seconds with full control over difficulty, size, and format—perfect for educators, publishers, and puzzle enthusiasts.

Yes, you need a free account to generate puzzles. Creating an account is quick and free, you can start generating puzzles immediately after registration.

Absolutely! Our free tier allows you to generate up to 10 classic 9×9 Sudoku puzzles per month in PNG format. You’ll have full commercial rights to use these puzzles however you like, no credit card required.

Click “Register” in the top navigation or on our homepage. Enter your name, email, and create a password. You’ll receive a confirmation email and can start generating puzzles immediately.

Yes! Both Monthly and Annual Pro subscriptions include a 3-day free trial. Try all features risk-free, and cancel anytime before the trial ends to avoid charges.

Free Tier:

• Classic 9×9 Sudoku (Easy difficulty only)

Pro Tier:

• Sudoku: Classic, Diagonal, Killer, Samurai, and more variants
• Hitori: Japanese elimination puzzle
• Futoshiki: Inequality constraint puzzle
• Akari: Light-up puzzle
• Nurikabe: Islands and streams puzzle
• Kakuro: Cross-sum puzzle

Free Tier: Easy only

Pro Tier: Easy, Medium, Hard, and Expert

All puzzles are algorithm-generated with guaranteed unique solutions.

Free Tier: 9×9 only

Pro Tier:

• Sudoku: 4×4, 9×9, and various variant sizes
• Other puzzles: 5×5 to 13×13 (varies by puzzle type)

Free Tier: One puzzle at a time

Pro Tier: Batch generation up to 10 puzzles at once

Yes! Every puzzle generated includes a complete solution, making it easy to check answers or provide answer keys for students.

Absolutely. Our advanced algorithms ensure every puzzle has a unique, valid solution. You’ll never encounter an unsolvable or duplicate puzzle.

Pro users can customize:

• Title font (Arial, Times New Roman, Georgia, etc.)
• Number font (for puzzle digits)
• Puzzle numbering (start from any number)
• Grid size and difficulty

Yes! All puzzles generated on PaperMind Puzzles, including those created on the free tier, come with full commercial rights. This means you can:

• Publish puzzles in books (Amazon KDP, Barnes & Noble Press, etc.)
• Sell puzzle collections or workbooks
• Use puzzles in paid courses or tutoring materials
• Include in commercial publications or newsletters
• Distribute to clients or customers
• Create puzzle apps or digital products

No! You are not required to credit PaperMind Puzzles or provide attribution. The puzzles are yours to use as you see fit.

Absolutely! Create and sell puzzle books on platforms like:

• Amazon Kindle Direct Publishing (KDP)
• Barnes & Noble Press
• IngramSpark
• Your own website or store
• Print-on-demand services

No limits! Once you generate a puzzle, you own the rights to use it commercially in unlimited quantities. The only restriction is your subscription’s puzzle generation limit (10/month for free, unlimited for Pro).

Yes! Teachers and educators can:

• Print unlimited copies for classroom use
• Include in worksheets and homework assignments
• Use in tutoring businesses
• Distribute to students (digitally or printed)
• Include in curriculum materials

Even free tier puzzles have full educational use rights.

Yes! Cancel your Pro subscription anytime from your account settings. There are no cancellation fees or penalties.

• Monthly Pro: Access continues until end of current billing period
• Annual Pro: Access continues until end of annual term
• Free Tier: You’ll revert to 10 puzzles/month limit

After generating 10 puzzles in a month, you’ll see a message prompting you to upgrade to Pro for unlimited access. Your limit resets at the beginning of each calendar month.

Yes! We offer a 30-day money-back guarantee on all Pro subscriptions. If you’re not satisfied, contact privacy@papermindpuzzles.io for a full refund.

Yes! Upgrade anytime from your account settings. When you switch to annual, you’ll be charged the annual rate ($100) and start saving immediately.