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Curious Cheetah

Four Winds

Background

This puzzle appears in "Challenge Your Brain Math & Logic Puzzles" (Dave Tuller & Michael Rios, Puzzle Wright Press) as "Eminent Domain".

Puzzle and Goal

An unsolved puzzle consists of a rectangular grid with number clues in some of the cells.
The goal is to draw lines in all non-clue cells to satisfy the clues.

Rules

The solved grid must satisfy the following conditions:

Variants

As "Mauerbau" or "Walls": Lines are counted for all the clues they end at, rather than just once.

Other Names

Eminent Domain; Lichtstrahl; Mauerbau; Vier Winde; Walls

Playable Online