Since 2021, we have posted some extra difficult Sunday Stumpers, about once a month. These will be quite tough puzzles, but with a logical path to be found (and solution videos to help). This tenth Sunday Stumper of 2022 is a Tapa-Like Loop (Transparent) puzzle by Prasanna Seshadri. Will all the cells be used in this puzzle like the title and the clues suggest?
(view directly for a larger image)
or solve online (using our beta test of Penpa-Edit tools in linex mode where left click+drag draws lines and right click marks X’s on edges)
Theme: All Cells?
Author/Opus: This is the 243rd puzzle from contributing puzzlemaster Prasanna Seshadri.
Rules: Variation of Tapa-Like Loop rules. (Form a single non-intersecting loop. Clues inside the grid represent the number of neighboring cells visited by the loop; if there is more than one number in a cell, each number should be represented with a separate loop segment. There is no 2×2 rule of Tapa in this puzzle.)
The loop can travel through clue cells. Each clue now describes the entire 3×3 area the clue cell is in the middle of.
See also this example:
Difficulty: 5 stars
Time Standards (highlight to view): Grandmaster = 32:00, Master = 45:00, Expert = 1:30:00