Hard Sudoku Puzzles
Hard Sudoku Puzzles
Sharpen your logic with demanding puzzles engineered for experienced solvers. No fillers—just pure Sudoku.
Expert Boards, Zero Guessing
Every Pure Sudoku board goes through uniqueness and solvability checks, so you can rely on logic alone.
Hard mode introduces advanced patterns like X-Wing, Swordfish, and hidden triples.
Compare Your Numbers
Track completion times, mistake counts, and streaks. Your stats sync across devices via iCloud so you can
measure progress anywhere.
Race Other Experts
Launch a multiplayer match and invite friends or jump into a quick match queue. Live status updates show
average completion times and who finished first.
Prep for your next expert Sudoku
Rotate between hard boards, strategy drills, and solver checks to sharpen technique without guessing.