Logic Masters Deutschland e.V.

"Pcgzwyg eiggu tbjsgek... jig vvrjs ts ttknag fgaptaqbt vc qas qok."

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Something for the lack of good Coral (Koralle) puzzles out there. Special thanks to Jesper for testing this one and the feedback!


Rules:   Coral (Koralle) rules apply:

- Shade some cells in the 13x13 grid so that all shaded cells form a single orthogonally connected area and every orthogonally connected area of unshaded cell[s] must touch the grid perimeter. No 2x2 anywhere in the grid can be entirely shaded.

- A circle clue outside a row/column corresponds to exactly one continuous group of shaded cells, and its integer value shows the length of that group, if given. Group of unshaded cell[s] separates between the clues. No clue can have the value of zero (0).

- For each row/column, either all circle clues or none of them are given. However, in any case of given circle clues, they've been sorted in non-decreasing order according to their values instead, where the sorted order is from left to right for the rows and from top to bottom for the columns. The actual correct order of the clues may or may not match with the given sorted order.



Puzzle:   I will provide two different versions for this one:

- The circles version:   Penpa plus  -  Sudokupad

- The question marks version:   Penpa plus  -  Sudokupad


The answer check in each penpa link will activate once the shading is correctly done in the 13x13 grid. Good luck and have fun solving!