Negative Tetromino by Serkan Yürekli
or solve online (using our beta test of Penpa-Edit tools in a composite mode for line/edge drawing)
Theme: Words
Author/Opus: This is the 36th puzzle from our contributing puzzlemaster Serkan Yürekli.
Rules: Divide the white cells into tetrominoes so that no two regions sharing an edge are the same tetromino (L, I, O, S, or T considering rotation and reflection). Regions may contain at most 1 cell with given letters; regions with such a cell CANNOT have the same tetromino shape as any of the letters in that cell. Also, see this example:
Answer String: Enter the letter of the tetromino region for each cell in the two marked rows from left to right, separating the rows with a comma. Use CAPITAL LETTERS for L, I, O, S, and T.
Time Standards (highlight to view): Grandmaster = 1:15, Master = 2:30, Expert = 5:00
Solution: PDF
02:02. Nice puzzle.
10:00.Lovely solve path.
Am I missing something when I say that many clues are redundant ? I guess it could also be solved by leaving only the 3 cells with 4 given letters and maybe one other letter somewhere else (e.g. the “L” from “OIL”).
I thought the instructions for entering the answer were not clear enough. Why is there no “for example: the answer from the example is SOOTTOO,LTTTSSL”?