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Curious Cheetah

Masyu

Background

This was designed by Nikoli to be even more cultural independent than similar puzzles: It contains no numbers or letters, just colored disks as clues.

Puzzle and Goal

An unsolved puzzle consists of a rectangular grid. Some squares contain a white or black circle.
The goal is to draw a closed loop that satisfies the clues.
Masyu initial statespacerMasyu solution

Rules

The solved grid must satisfy the following conditions:

Variants

The puzzle can also use a hexagonal grid.

Other Names

Pearls; Shinju no Kubikazari; Shiroshinju Kuroshinju; White Pearls and Black Pearls

Playable Online