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Curious Cheetah

Magnets

Background

The origin of this puzzle is not known.

Puzzle and Goal

An unsolved puzzle consists of a rectangular grid filled with two-cell regions. There are numbers on all four sides.
The goal is to place plus and minus signs in some of the cells to satisfy the clues.

Rules

The solved grid must satisfy the following conditions:

Other Names

Magnete; Magnetfeld; Magnetplatten

Playable Online