Easy Kropki Sudoku
New to Kropki Sudoku? Easy puzzles are designed to teach the core constraint with minimal complexity. Each puzzle uses simpler configurations so you can focus on understanding the rule before anything else.
What to expect at Easy level
Easy Kropki Sudoku puzzles are calibrated so the variant constraint alone is often enough to reveal cells directly. You'll rarely need to look beyond a single unit at a time. Mistakes are easy to catch because the constraint violations are obvious.
Recommended for players who have never tried Kropki Sudoku before, or those who prefer a relaxed, confidence-building experience.
Difficulty overview
About Kropki Sudoku
Kropki Sudoku places dots between pairs of adjacent cells. A white dot means the two digits differ by exactly 1 (consecutive). A black dot means one digit is exactly double the other (e.g., 2 and 4, or 3 and 6). Where no dot appears, neither condition applies. Some Kropki puzzles use the 'negative constraint' where the absence of a dot guarantees neither condition holds, giving even more information.
Solving Techniques for Easy Level
| Technique | Description | Level |
|---|---|---|
| White Dot Pairs | White dots mark consecutive digit pairs: (1,2), (2,3), …, (8,9). Cross-reference with row and column constraints. | Beginner |
| Black Dot Pairs | Black dots mark double-relationship pairs: (1,2), (2,4), (3,6), (4,8). Only these four combinations are valid. | Beginner |
Ready to go deeper? Try Medium Killer Sudoku to unlock Intermediate techniques.