Number Mirror
Type mirrored numbers before time runs out.
Play now →Symmetry Blocks
The left half shows a pattern — recreate its mirror image on the right, block by block. Correct blocks lock in, wrong clicks cost a life. Three lives, growing grids: fold it in your mind.
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Patterns
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Lives
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Best
Level 1
Click the mirrored positions on the right to complete the pattern.
How to play
- Study the lit pattern on the left half of the grid.
- Click the mirror positions on the right half.
- Correct blocks lock in; wrong clicks cost one of three lives.
- Complete the full pattern to advance — grids grow as you go.
Frequently asked questions
How does Symmetry Blocks work?
The left half of a grid shows a lit pattern; the right half is dark. Click the mirrored positions to complete perfect left-right symmetry. Every correct block locks in; wrong clicks cost one of your three lives.
What is a good score?
Two to four patterns is a solid start. Seven or more means you are mirroring dense 6×6 and 8×8 grids almost effortlessly — genuine spatial fluency.
What skill does this test?
Mental rotation and spatial transformation — imagining a shape flipped across an axis. It is the same cognitive move as reading a mirrored map, visualizing folds in origami, or judging if two shapes are congruent.
Any strategy for dense patterns?
Work row by row and scan outward from the center line — mirrored neighbors are easiest to check together. Counting lit blocks per row also catches slips: each row must have an even count.
Why does the pattern stay visible?
This is a transformation task, not a memory task — the challenge is executing the mirror flip accurately under pressure, not memorizing. That keeps it fair as grids grow and the error budget stays at three.