tasquare

A puzzle made of squares. Some squares have numbers in them, and some are highlighted like they have numbers but don't show any.

You have to shade in squares such rhat

• any shaded region is a square (1x1, 2x2, etc)
• all numbered squares share edges with shaded regions of size n (so a 6 would be a 2x2 and two 1x1s)
• highlighted squares share an edge with 1+ shaded regions
• unshaded regions are orthogonally contiguous