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From the Publisher Serious Sudoku, Cleverly Crafted Medium to Hard — Where Strategy Starts to Matter This is where Sudoku gets interesting. You'll need more than intuition — pattern recognition, elimination strategy, and a bit of patience. Our best-selling tier for a reason. Every puzzle is validated for correctness and difficulty using professional-grade checking tools, and we hand-solve a sample from every book to make sure they feel right, not just grade right. Built for Serious Solvers Designed by a professional game developer with an eye for quality, balance, and what makes a puzzle satisfying to solve. Prefer a larger page? Also available in full size 8.5×11 with 4 puzzles per page and 3" grids. What's Inside 400 puzzles, Medium to Hard difficulty 3.5" grids — generous size, room to annotate 2 puzzles per page Full solutions in the back Validated difficulty ratings Portable 6x9 format Find Your Level Easy to Medium Build confidence and sharpen your technique. A great entry point into the Serious Sudoku system. Medium to Hard Where strategy starts to matter. Pattern recognition, elimination, patience. Our best-selling tier. Hard to Expert No handholding. Four hundred puzzles that make you work for every solution. Serious Sudoku Portable, Easy To Medium Serious Sudoku Portable, Medium to Hard Serious Sudoku Portable, Hard to Expert Serious Sudoku Samurai: 150 Five-Grid Puzzles: Easy to Expert Serious Sudoku: Ultra Large Print, Easy to Expert Add to Cart Add to Cart Add to Cart Add to Cart Add to Cart Price $10.99$10.99 $10.99$10.99 $10.99$10.99 $10.99$10.99 $10.99$10.99 Puzzles 400 400 400 150 150 Size 6" x 9" 6" x 9" 6" x 9" 8.5" x 11" 8.5" x 11" Solutions Full Full Full Full Full About Curious Crow Media Curious Crow Media is a small, family-run publishing company with a simple mission: make puzzle books worth your time. We make word search, sudoku, and puzzle books for people who take their puzzles seriously — and we put the same care into layout, print quality, and difficulty calibration that we'd want as solvers ourselves. Every book we publish is something we'd actually want on our own shelf.
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