Sudoku: Daily Challenge

Sudoku the way it should be: every puzzle solvable by pure logic, every level unlocked from the start, and not a single advert anywhere. Most sudoku apps interrupt you. This one doesn't. There is no banner across the board, no video between puzzles, no "watch an ad for a hint", and no locked difficulty waiting behind a subscription. You open it, you play. PUZZLES THAT PLAY FAIR Every puzzle is generated with exactly one solution and checked to be solvable by human technique — you will never be forced into a guess. Choose Easy, Medium, Hard or Expert, and know that the label means something: puzzles are graded by the hardest technique they actually require. HINTS THAT TEACH YOU SOMETHING Stuck? A hint names the technique, shows you the cells it applies to, and explains the reasoning in plain English — "in box 1, 2 is confined to row cells A1 and A3, so 2 comes out of the rest of that…