Sashigane is a region based logic puzzle where the grid is divided up into smaller, L-shaped regions.


The objective is to divide the whole grid into smaller regions, subject to the following rules:

  1. Upon completion each tile will be part of an L-shaped polyomino exactly 1 cell wide.
  2. Circles show the bend in the polyomino with numbers in some circles showing how many cells make up that polyomino.
  3. Arrows are located at either end of the polyonimo and point towards the bend in it.
  4. Clues may be part of the same polyomino, conversely not all final polyominoes may start with a clue.


A standard 10x10 sashigane and its solution.

Sashigane Example
Sashigane Solution