Kurokuron (クロクロ一ン: “black clone”), is a shading puzzle that first appeared in Puzzle Communication Nikoli issues 153-155. Identical rules apply to a hexagonal grid.
Rules
Shade some cells such that:
- Bold-outlined regions contain exactly two shapes, made up of contiguous groups of 1 or more shaded cells. Within a region, the two shapes must be congruent, allowing reflection and rotation.
- A shape cannot share an edge with another shape.
- Cells with arrows, which cannot be shaded, point to a neighboring cell, which must be shaded and part of a shape consisting of the given number of cells.
Example


Puzzles
All of the puzzles can be found organized in this printable PDF, or in the images below.
01. Easy
02. Medium

03. Medium

