Four Balls

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Four Balls is a type of Constraint Satisfaction Division puzzle.

Contents

Description

A Four Balls puzzle generally consists of balls on grid.

Rules

Divide the balls into groups of four balls. The groups are formed by balls that are adjacent either horizontally or vertically.

Example

Puzzle by Naoki Inaba.


Aesthetic Constraints

History

Four Balls puzzles were invented by Naoki Inaba. (However, similar puzzles are known previous.)

Variants

See Also

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