Look at the middle

Stare at the middle

Look at the centre with the corner of your eye

Look left to right, or right to left



Look left to right, or right to left

Look at the right two or the left two

Stare at the middle

Stare once again at the middle

Look from top to bottom

Stare at the middle

Look all over this one

In or out?

How many shapes? You decide…

Can you spot the grey shape without your eyes hurting?

Count the light coloured squares
Real or Not? You decide…

Stare at the middle

Look into the swirl

3D or 2D?

Falling into Oblivion

Indent or Shadow?

Stare at the middle

How many shapes?

Count the edges…

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