Night Shift

CIPHER ◆ 9 VOL.03: NIGHT SHIFT 180 Sudoku puzzles. A hard-level challenge for focused late-night solving. Night Shift is the third volume in the Cipher 9 Sudoku series: a large-print Sudoku book built for solvers who are ready for a sharper, less forgiving challenge. Inside, you’ll find 180 unique Sudoku puzzles at a hard difficulty level. The rules are familiar: nine digits, one grid, clean logic. But the margins are tighter now. Each puzzle asks for more attention, more patience, and a steadier solving rhythm. This volume is made for quiet hours, deep focus, and solvers who enjoy the feeling of working through a grid when there is less given and more to discover. What’s Inside • 180 unique Sudoku puzzles • Hard difficulty for experienced solvers • Large print format for comfortable reading and solving • Clean puzzle design with no visual clutter • Progressive hard-level solving flow • Full solutions included at the back of the book • Minimalist interior layout designed for focus and clarity Who This Book Is For • Sudoku solvers who want a harder challenge • Adults who enjoy focused, screen-free puzzle time • Experienced solvers who prefer clean layouts and large-print grids • Readers who like quiet, thoughtful, late-night solving sessions • Fans of minimalist puzzle books with a refined premium feel What Makes It Different Night Shift keeps the Cipher 9 style clean, quiet, and deliberate. There are no gimmicks, no noisy page designs, and no unnecessary distractions. The challenge comes from the grid itself: fewer easy openings, tighter logic, and puzzles that reward careful attention. This is the third step in the Cipher 9 Sudoku path. If First Contact introduced the series and Deep Run pulled you further in, Night Shift is where the challenge becomes sharper. @cipher9books