Wednesday 3 February 2016

Puzzle #175: Tetromino Areas

This is the third practise puzzle for this year's UKPA Open.

The first time I wrote this was for the 2014 Polish Championship Team Round. It was a simpler variant of the more common Pentomino Areas. Originally I was going to use LITS for this type, but I liked that better in the second group. This was the second type I thought of. This puzzle is the harder of the two puzzles. Neither is overly difficult. If you see the opening of the puzzle it should cause no problems.

Rules:

Place the given set of tetrominos in the grid so that they don't touch each other, not even diagonally. Tetrominos may be rotated and reflected. Each black-bordered region must contain a single tetromino.

Example
 
 
Puzzle
 

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