Kropki Sudoku Puzzle 2026

Kropki Sudoku is a fully offline logic puzzle game based on classic Sudoku with extra black and white dot clues. Fill the grid by following standard Sudoku rules, plus Kropki rules: a black dot means two neighboring numbers have a 1:2 ratio, while a white dot means they differ by 1. This app is made for players who already enjoy Sudoku and want a deeper paper-and-pencil style challenge. No account, no login, no network connection, no ads, and no data collection. Puzzle progress, results, and settings are stored only on your device. Key features: - Kropki Sudoku puzzles: offline puzzle sets across multiple difficulty levels, using black-dot ratio clues and white-dot consecutive clues. - Candidate notes: mark possible numbers, clear notes quickly, and spot conflicts more easily. - Logic aids: optional error checks, duplicate-number hints, and rule-conflict highlights. - Local progress: save unfinished puzzles, completion times, best results, and difficulty statistics. - Practice tools: undo and redo, draft mode, timer toggle, and night mode. Whether you want a quick logic break or a tougher grid to solve step by step, Kropki Sudoku gives you a focused offline puzzle experience.