Sudoco

Sudoco is Sudoku made quiet. Ink on warm paper, a soft koto in the background, and nothing rushing you. EVERY PUZZLE PLAYS ITS OWN MELODY Each correct digit plucks a note on a Japanese koto. Finish a row, column or box and it rings a chord. Solve the puzzle and the whole scale sings. No two games sound the same. EVERY PUZZLE LEAVES A PAINTING Beneath each grid hides a sumi-e ink painting: bamboo in the wind, mountains at dawn, plum blossoms, a moon over the sea. Each correct cell reveals a little more. Solve the puzzle and the painting is yours to keep in your gallery. FAIR, CLEAN PUZZLES • Every puzzle has exactly one solution and never needs guessing • 5 levels: Easy, Medium, Hard, Expert and Master • Difficulty is graded by the techniques you actually need, so Hard really is hard • A new daily challenge every day, the same for everyone HINTS THAT TEACH A hint doesn't just fill a cell. It shows you the step and explains why, from a simple single up to X-Wing and Swordfish. EVERYTHING YOU EXPECT • Notes, with auto-removal when you place a digit • Undo and erase • Optional 3-mistake limit • Highlights for the row, column, box and matching digits • Stats and best times for every level • Light paper or dark paper • Works offline • 11 languages Take a breath, pick a level, and let the ink fill the page.