NineFold Sudoku

Most Sudoku apps call a puzzle "hard" because it has fewer clues. NineFold grades every puzzle by the hardest technique it actually takes to solve, so Easy stays easy and Evil earns its name. FIVE HONEST DIFFICULTIES • Easy, Medium, Hard, Expert and Evil, graded by technique, not clue count • From singles up through X-Wings, XY-Wings and coloring • Every puzzle has exactly one solution, reachable by logic alone A DAILY CHALLENGE, FREE EVERY DAY • One new puzzle a day, the same for every player • Missed a day? NineFold Pro unlocks the whole archive, back to day one HINTS THAT TEACH • One tap places the next digit • When the next step only rules candidates out, the hint names the technique and shows the pattern on the grid PLAYS ANYWHERE • Fully offline: no account, no sign-in, no Wi-Fi needed • Your games, stats and streaks are saved on your device EASY ON THE EYES • Light and dark…