Masyu (Windows)

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Masyu is a single-player logic puzzle originating in Japan.

Two kinds of symbols are placed onto a grid and the object is to draw a single continuous line through them following a few simple rules:
  • The loop must be a continuous path that begins and ends at the same point.
  • The loop must not pass through a cell more than once.
  • All segments of the loop must be horizontal or vertical lines.
  • The loop must pass straight through a white circle cell, but make a 90° turn in the next and/or previous cell in the path.
  • The loop must make a 90° turn on a black circle cell, but has to travel straight through the next and previous cells in the path.
Optional player aids consist of in-game instructions which open in a new window, a self-explanatory 'Prevent Illegal Moves' function, a 'Verify Puzzle' option which colours correct connections green and incorrect lines red, and an 'Undo Last Move' function.

This game has three difficulty levels, a save feature, a print function so the player can solve the puzzles without a computer, a pause key and a 'boss key' which instantly minimises the game but keeps it running.


Masyu Windows Here the 'Verify Puzzle' option has been used to show the correct and incorrect lines
Masyu Windows Lines are drawn by clicking on a cell and dragging the cursor to the end point
Masyu Windows The F1 key pauses the game, important when trying to achieve a fast time, while the F2 key is the 'boss key'
Masyu Windows The game's title screen

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piltdown_man (151592) added Masyu (Windows) on Mar 19, 2015