Overloaded/Überlastet Tapa
(Published on 22. June 2020, 17:30 by Carrick22)
Blacken some cell in the grid so that all black cells are connected orthogonally in the grid. No 2x2 area can be fully blackened. A cell with number(s) cannot be blackened. A number in a cell indicates the number of directly adjacent black neighboring cells (all 8 cells around it). Several numbers in the same cell indicates separated groups of black cells separated by at least one white cell. The positions of the black cells are irrelevant. A ? denotes a number greater than zero.
Additionally, each clue is overloaded, i.e. it contains one too many numbers. Remove one number from each clue to get a valid tapa puzzle. When a cell is emptied, it becomes a ? clue. Here is an example :
You can use Penpa-edit for solving it on your browser. Here is the puzzle with a blank grid side-by-side for convenience.
Solution code: Row 9, followed by columns 5 and 8 (marked for convenience). Use "1" for a blackened square and "0" for white. Treat the clues as white cells.
Comments
on 2. March 2021, 23:30 by yureklis
This variation was called as "Elimination Tapa" many years ago. Here is the TVC Variation List: https://logicmastersindia.com/lmitests/dl.asp?attachmentid=240&view=1&v5
on 18. October 2020, 02:11 by Greg
Saw this a few months ago but had never even tried classic Tapa so didn't know how to even begin. Very nice to have rediscovered it now I've done some other Tapa puzzles.
Good fun! Was worth the wait.
on 22. June 2020, 23:59 by Carrick22
The "Overloaded" name comes from my sudoku variant called "Overloaded Quadruples", which is Quadruple Sudoku with the same principle. I haven't made a sudoku out of it whithout the puzzle being ugly, sadly.
on 22. June 2020, 23:45 by Realshaggy
The variant where one number per clue is missing is usually called "Tapa Restauration". Maybe we can call this one "Tapa Wrecking Ball" :-)
(Just kidding, the name is fine.)
on 22. June 2020, 20:57 by glum_hippo
Thank you, that was fun and a very clever variant. I was not very efficient, I'm afraid.
on 22. June 2020, 19:33 by Joe Average
@Circleconstant,
yes, but Carrick could have written any other number in there too, beause of the rules it makes no difference which single number is/was in that cell before erasing and replacing it.
on 22. June 2020, 19:24 by Circleconstant314
Is infinity considered a number, here?
