The path must turn at each black circle and go straight for two line segments forward and back.
The path must go straight through each white circle and turn on at least one segment immediately before or after the white circle.
The path must form a single loop.
The Way of Masyu
Masyu is played on a grid. It has a simple goal: to draw a single nonintersecting loop through all of the circles in the grid.
The masyu grid contains two kinds of circles. Each adds a constraint to the path of the loop.
TootSweet Masyu is available in the Apple iPhone App Store and includes 60 original Masyu puzzles for beginners to masters.
Choose a puzzle in the scrolling list. To add or remove line segments, touch and drag with your finger. Pinch with your thumb and index finger to zoom in and out, and you can move a zoomed-in view by touching and dragging with a single finger from any of the shaded drag zones in the corners.
Each puzzle has exactly one solution. When you've solved a puzzle, its background will turn green. Be sure to follow all the rules of Masyu as you go!
Thanks for checking out TootSweet Masyu!