Ratio Sudoku: Number Puzzle

Nine by nine cells, the digits 1 to 9 – and every row, every column and every 3×3 box holds each digit exactly once. Ratio Sudoku is the classic number puzzle: short enough for a coffee break, tricky enough for the evening. Try it free: the Easy difficulty and the Daily Puzzle stay free forever. Medium, Hard, Expert and Endless mode come with a single unlock. No ads – ever. No subscription, no tracking, no account. HOW IT WORKS Drag a digit from the tray onto an empty cell – or tap the cell first, then the digit. A tapped cell highlights its row, its column, its box and every matching digit, and the tray shows how often each digit is still missing. A wrong digit turns red and costs one of three tries; undo is free, and a hint fills a cell for you. FOUR DIFFICULTY LEVELS From Easy, where every digit follows necessarily from the givens, to Expert with barely more than twenty clues. Level…