Kropki (Russian for 'dots') is a logic puzzle where you fill a grid so every row and column contains each number once. Black dots between adjacent cells mean one value is double the other; white dots mean the values are consecutive.

Is Kropki free to play?

Yes, Kropki on GameZipper is 100% free, runs in any modern browser, and works on desktop and mobile. No download or signup required.

How many levels does Kropki have?

There are 29 hand-crafted levels across 5 difficulty tiers: Beginner (4x4), Easy (5x5), Medium (6x6), Hard (6x6 sparse), and Expert (7x7). Every level has a unique solution verified by a backtracking solver.

What do the black and white dots mean in Kropki?

A black dot between two adjacent cells means one number is exactly twice the other (e.g. 2 and 4, or 3 and 6). A white dot means the two numbers are consecutive (differ by 1, e.g. 4 and 5). No dot means neither relationship holds.

Kropki

A pure-logic dots puzzle. Black dots mark doubles, white dots mark consecutive numbers. Fill the grid — every level has exactly one solution.

Tier #1

00:00

How to Play

Fill the grid so every row and every column contains each digit exactly once.

Black dot — adjacent cells are doubles (e.g. 2 & 4, 3 & 6).

White dot — adjacent cells are consecutive (differ by 1, e.g. 4 & 5).

🚫 No dot — neither rule applies.

Tap a cell, then tap a digit. Toggle Pencil to keep candidate notes. Earn 3 stars by solving fast with few hints.

Kropki

Select Level

How to Play

Solved!

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