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Curious Cheetah

Oxtails

Background

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 rectangular grid. Some cells contain an X or an O.
The goal is to connect each X to exactly one O by a line, to satisfy the rules.

Rules

The solved grid must satisfy the following conditions: