Medium to Hard Sudoku

Bored of "Easy" But Not Ready to Get Wrecked by Expert Puzzles? A progressive system that pushes you from solid Medium through genuine Hard across 12 carefully calibrated levels - without ever throwing you off the deep end. Instead of a random pile of difficult puzzles, this is a staircase - engineered so every level asks slightly more of you than the last, until real Hard difficulty feels earned instead of punishing. Inside, you'll find:108 puzzles, sequenced across 12 progressive difficulty levels, from easy Medium through true Hard - no jarring spikes, no puzzles that feel unfair One puzzle per page, printed clean and minimal - full focus on the grid, nothing competing for your attention A genuine bridge for solvers ready to level up, instead of a book that assumes you're either a beginner or an expert with nothing in between Clearly printed grids, comfortably sized for the A5 page - sharp enough for late nights and long focus sessions A complete answer key in the back, so a tough puzzle never turns into a guessing game A striking monochrome Bauhaus cover - no cartoon numbers, no cluttered graphics, just a design that respects what's actually a serious mental workout You don't need to be an expert already. You need puzzles that take your skill seriously and build on it, level by level, until Hard doesn't feel hard anymore - it feels like where you belong.