Logic Masters Deutschland e.V.

Rules:
Normal Sudoku rules apply.

The grey cells form a 'cloned' region, which appears 5 times within the grid (1 Given + 4 Hidden).

Each of the clones is an exact copy of the others; same digits, same configuration, rotations and reflections are not allowed.

Puzzle:
F-Puzzle link to solve online

Hints:
Clones can contain duplicates of a digit

Clones can partially "overlap" with each other. (share some, but not all, of the same squares).

If you're struggling to get started, highlight the text below to reveal a general strategy recommendation:
[Hint] Pick one cell of the clone to be your anchor, then color the entire grid based on where the hidden anchor(s) can and cannot be. A few rows/columns around the perimeter of the grid can always be eliminated based on the shape of the clone. Additionally, basic sudoku rules prevent two anchors from ever being in the same row, column or box. As you solve, continue eliminating any anchor placements that would force contradictions, and eventually it will reveal where the hidden clones must be. [/Hint]

The Series:
This puzzle belongs to 7 part series of daily "Hidden Clones Sudoku" puzzles. The links below will work as they become available.
Day1 Day2 Day3 Day4 Day5 Day6 Day7 BONUS
The digits in each puzzles clone will be required to solve the bonus puzzle.

Inspired by Sam Cappleman-Lynes "Hidden Clone" Sudoku

Created by Greg Rodgers Powers