Books by Sharp Mind Press

Our Sudoku books feature large print grids, progressive difficulty levels, and a built-in IQ scoring system — so you always know where you stand and where you're headed.

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Sudoku IQ: Puzzle IQ Series

By Jeff R Smith 150 Puzzles Large Print 10 Difficulty Levels

This isn't just another Sudoku puzzle book — it's a Sudoku Mastery System. Our carefully crafted difficulty progression takes you from easy warm-ups to advanced, brain-teasing grids across 10 structured levels (15 puzzles each).

Track your progress using the built-in Sudoku IQ scoring system — a casual but motivating way to measure your comfort level as you advance. Complete solutions are included at the end of each level, and a bonus extreme-difficulty puzzle is included for the truly dedicated solver.

150 Large Print Puzzles 10 Progressive Levels Unique IQ Scoring System One Puzzle Per Page Complete Solutions Bonus Extreme Puzzle

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Sudoku IQ Easy

By Jeff R Smith 120 Puzzles Large Print Beginner Levels 1–3

New to Sudoku? Start here. This book is designed specifically for players who want to learn at their own pace, build solid fundamentals, and actually enjoy the process. 120 carefully selected beginner-level puzzles, organised across three gentle difficulty tiers.

Level 1 puzzles can be solved with simple scanning — no advanced techniques needed. By Level 3, you'll be placing numbers with confidence and developing the pattern recognition that makes Sudoku so satisfying. Every puzzle uses our large print format with one puzzle per page — no squinting, no cramped grids.

120 Large Print Puzzles 3 Beginner Levels One Puzzle Per Page Beginner Tips Included Complete Solutions Part of Puzzle IQ Series

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Sudoku IQ Medium

By Jeff R Smith 120 Puzzles Large Print Intermediate Levels 4–6

Ready to move beyond the basics? This is your next step. Sudoku IQ Medium covers three connected tiers of the Puzzle IQ scale — Sharp (Level 4), Advanced (Level 5), and Expert (Level 6) — calibrated for solvers who are past the warm-ups and want puzzles that actually require thought.

Every puzzle sits in the sweet spot where Sudoku stops being a warm-up and starts being real: enough challenge to fully engage, never so much that it grinds you to a halt. 120 large print puzzles, one per page, with complete solutions at the end of each level.

120 Large Print Puzzles 3 Intermediate Levels Unique IQ Scoring System One Puzzle Per Page Complete Solutions Part of Puzzle IQ Series

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Kakuro is the crossword of numbers — fill the grid so every row and column adds up to the clue. Our Kakuro books use the same large print format and progressive difficulty system as the rest of the Puzzle IQ series.

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Kakuro IQ: Puzzle IQ Series

By Jeff R Smith 150 Puzzles Large Print 10 Difficulty Levels

This isn't just another Kakuro puzzle book — it's a Kakuro Mastery System. Our carefully crafted difficulty progression takes you from easy warm-ups to advanced, brain-teasing grids across 10 structured levels (15 puzzles each).

Track your progress using the built-in Kakuro IQ scoring system — a casual but motivating way to measure your comfort level as you advance. Complete solutions are included at the end of each level, and a bonus extreme-difficulty puzzle is included for the truly dedicated solver.

150 Large Print Puzzles 10 Progressive Levels Unique IQ Scoring System One Puzzle Per Page Complete Solutions Bonus Extreme Puzzle

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Kakuro IQ Easy

By Jeff R Smith 120 Puzzles Large Print Beginner Levels 1–3

New to Kakuro? Start here. This book is designed specifically for players who want to learn at their own pace, build solid fundamentals, and actually enjoy the process. 120 carefully selected beginner-level Kakuro puzzles, organised across three gentle difficulty tiers.

Level 1 puzzles focus on simple sums and short runs — no advanced strategies needed. By Level 3, you'll be solving more complex combinations with confidence and developing the number sense that makes Kakuro so rewarding. Every puzzle uses our large print format with one puzzle per page — no squinting, no cramped grids.

120 Large Print Puzzles 3 Beginner Levels One Puzzle Per Page Beginner Tips Included Complete Solutions Part of Puzzle IQ Series

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Kakuro IQ Medium

By Jeff R Smith 120 Puzzles Large Print Intermediate Levels 4–6

Ready to go deeper? This is your next step. Kakuro IQ Medium covers three connected tiers of the Puzzle IQ scale — Sharp (Level 4), Advanced (Level 5), and Expert (Level 6) — calibrated for solvers who've learned the basics and want cross-sums that actually challenge them.

Every puzzle sits in the sweet spot where Kakuro stops being a warm-up and starts being real: enough challenge to engage the math-logic part of your brain, never so much that it grinds you to a halt. 120 large print puzzles, one per page, with complete solutions at the end of each level.

120 Large Print Puzzles 3 Intermediate Levels Unique IQ Scoring System One Puzzle Per Page Complete Solutions Part of Puzzle IQ Series

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Cryptograms hide famous quotes behind a secret cipher — your job is to decode them letter by letter. Part word puzzle, part detective work, and completely addictive. Our Cryptogram books use the same large print format and progressive difficulty system as the rest of the Puzzle IQ Series.

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Cryptogram IQ Easy

By Jeff R Smith 120 Puzzles Large Print Beginner Levels 1–3

Can you crack the code? Every cryptogram hides a famous quote behind a secret cipher — your job is to decode it letter by letter. Start with the hints, spot the patterns, and watch the message reveal itself. It's part word puzzle, part detective work, and completely addictive.

Cryptogram IQ Easy is a beginner-friendly collection of 120 large print cryptograms organised across 3 progressive difficulty levels. Features timeless quotes from history's greatest minds, letter frequency hints, and complete solutions — so you can always check your work and keep moving forward.

120 Large Print Puzzles 3 Beginner Levels Famous Quotes Letter Frequency Hints Complete Solutions Part of Puzzle IQ Series

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