Here is a transparent variation of Tapa-Loop by Serkan Yürekli adapted to a Rhombile grid. Some puzzles of this type crafted by Serkan and Fatih Kamer Anda will be featured on the upcoming Tapa Variations Contest hosted by Logic Masters India.
Rules
Shade some cells such that:
- For any cell with one or more numerical clues, shaded cells form connected groups of the indicated size within the group of cells sharing a vertex with the clued cell. Cells with clues can be shaded.
- For every vertex touching exactly 3 cells, at least one cell must be unshaded.
- One must be able to draw a single loop through all shaded cells.
Example
Puzzles
All of the puzzles can be found organized in this printable PDF, or in the images below.
PDF Rhombile Transparent Tapa Loop
01. Medium
02. Hard
03. Easy
Paramesis Puzzle Blog 
Either there’re some really easy break-ins I’m missing in the first two puzzles, or the third puzzle should be marked “easy”, not “hard”. I had to bifurcate a lot more to prove solution uniqueness in either of the first two than in the third.
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That’s fair. I have a tendency to default larger puzzles to “hard” difficulty, seldom finding them easier than that. I do recall having an easier time solving this one than others. I’ve updated the difficulties.
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