Trapezoids

Here is a new type loosely inspired by Inaba Naoki’s Cell-Land.

Rules

Shade some cells such that:

1. Numbers indicate exactly how many surrounding cells are filled.
2. Filled cells must be in clusters of 3, forming trapezoids.  A trapezoid may not share an edge with another trapezoid.
3. All unfilled cells are connected edge-to-edge.

Example

Puzzles

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

PDF Trapezoids

01. Easy

02. Medium

03. Medium

04. Hard

05. Hard

06. Hard

07. Expert