Tapa (Transparent) by Prasanna Seshadri
or solve online (using our beta test of Penpa-Edit tools; use tab to shift between shading mode and the composite Yajilin mode where left click marks cells, right click marks dots in cells or X’s on edges, left click+drag draws lines.)
Theme: 13
Author/Opus: This is the 33rd puzzle from our contributing puzzlemaster Prasanna Seshadri.
Rules: Variation of Tapa Rules. Here, the clue cells can also be blackened. This means every clue is valid for all surrounding cells (up to 9) including itself. Each clue must indicate the size of all contiguous shaded groups around it. This example image should help:
Answer String: Enter the length in cells of each of the shaded segments from left to right for the marked rows, starting at the top. Separate each row’s entry from the next with a comma.
Time Standards (highlight to view): Grandmaster = 4:30, Master = 8:15, Expert = 16:30
Solution: PDF; a solution video is available here.
Note: Follow this link for other Tapa variations and this link for classic Tapa. If you are new to this puzzle type, here are our easiest Tapa puzzles to get started on.