How to play Block Counting

Count every cube in the stack, including those hidden from the starting view.

Visual puzzle

Rules

Each block is one cube.
Count partly hidden cubes as well as fully visible ones.

How to answer

Drag the stack, use the rotation buttons, or focus the view and press the arrow keys to inspect other sides.
Enter the total number of cubes and submit it.

Solving tips

Count one layer at a time. Rotate to check overlaps before adding the layers together.

Practice

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Block Counting example 1

Practice example · difficulty 1

Block Counting example 2

Practice example · difficulty 3