Masu PuzzleJapanese Logic Puzzles

Free daily Japanese logic puzzles

Today’s puzzles

Fresh logic puzzles every day, each with exactly one solution. Simple rules, deep solves.

Hitoriひとりにしてくれ

Shade numbers until no row or column repeats.

Play #How to play

Slantごきげんななめ

Draw a diagonal in every square without closing a loop.

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Slitherlinkスリザーリンク

Draw one loop around the numbered squares.

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Star Battle

One star in every row, column and region, and none may touch.

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Hashi橋をかけろ

Join the islands with bridges, as many as each number says.

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Masyuましゅ

Draw one loop through the pearls: straight through white, turn on black.

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Coming to the notebook

  • AkariLight every square of the room with lamps that can’t see each other.
  • YajilinShade the squares the arrows point to, then loop through the rest.
  • HeyawakeShade squares room by room, without walling anything off.

About Masu Puzzle

Masu Puzzle publishes one puzzle of each kind every day, free to play in your browser with no sign-up. They’re pencil puzzles from Japan, most first published by Nikoli, the company that gave Sudoku its name. Every puzzle has exactly one answer, reached by logic alone.

New to one? How to play Hitori · How to play Slant · How to play Slalom · How to play Slitherlink · How to play Nurikabe · How to play Star Battle · How to play Hashi · How to play Masyu