Practice📖 Learn the rule first ▸
Sums & dots
Kropki Dots
White dot = consecutive; black dot = a 2:1 ratio.
Tips
- ◆White dot: the two digits are consecutive (differ by 1).
- ◆Black dot: one digit is double the other — 1-2, 2-4, 3-6, or 4-8.
- ◆No dot between cells means neither relation holds there.
Drills