# 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:

The line connecting an X to an O makes exactly one right-angle turn.

Each cell in the grid is used exactly once (either for an X, an O, or a line segment).