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Curious Cheetah

Pentomino Fences

Background

While the grid for this puzzle is similar to that for Slitherlink, the puzzle itself is different.
This puzzle appears in "Challenge Your Brain Math & Logic Puzzles" (Dave Tuller & Michael Rios, Puzzle Wright Press).

Puzzle and Goal

An unsolved puzzle consists of a 18x10 rectangular array of dots. Some numbered clues have been placed.
The goal is to create 12 regions of 5 squares each, representing each possible pentomino.

Rules

The solved grid must satisfy the following conditions: