Logic Masters Deutschland e.V.

Try an easier practice puzzle first - Proof of Constept - which showcases Leandoku, using X Sums instead of Skyscrapers.



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Rules for Pisa Cake:

LEANDOKU:
- Fill every cell with a digit from 1-6;
- Digits do not repeat in a row, column, or "slanted box" (i.e. bold outlined region).

COUNTING CAKES:
- A digit on a piece of cake shows how many pieces of cake contain that digit.

SKYSCRAPERS (or "Leaning Towers"!):
- A cake outside the grid is a Skyscraper clue that contains a digit showing how many digits are "seen" from that clue, where a digit is "seen" if it is greater than all other digits between itself and the clue;
- Clues apply separately in both orthogonal directions in which they see into the grid;
- For example, a clue of 4 in the North West area of the grid would "see" 4 digits to its East AND 4 digits to its South.