Truncated Square Chocona

Chocona (チョコナ) is a puzzle type that likely originates with Nikoli.  I have adapted it to play on a Truncated Square grid.

Rules

Shade some cells such that:

  1. A filled square may not share an edge with a filled octagon.
  2. Filled octagons may share an edge, but only if the contiguous area of filled octagons forms a 45° oriented rectangle.
  3. Each bold-outlined region must have at least one filled octagon.
  4. Numbers indicate exactly how many cells, octagon or square, are filled in a bold-outlined region.  Regions with no number can have any number of filled cells.

Example

 Truncated Square Chocona ExampleTruncated Square Chocona Example Solution

Puzzles

All of the puzzles can be found organized in this printable PDF, or in the images below.

PDF Truncated Square Chocona

01. Easy

Truncated Square Chocona Easy 01

02. Medium

Truncated Square Chocona Medium 02

03. Medium

Truncated Square Chocona Medium 03

04. Hard

Truncated Square Chocona Hard 04

05. Hard

Truncated Square Chocona Hard 05

06. Hard

Truncated Square Chocona Hard 06

07. Expert

Truncated Square Chocona Expert 07

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