Doppelzïpper

by Marty Sears by Marty Sears

CASE 3782

Doppelzïpper

Not graded: we can’t read all its rules yet
  • Counting circles

The brief

DOPPELGÄNGER SUDOKU:

  • Fill each cell of the main 9x9 grid such that every row, column and 3x3 box contains a 0 and eight different digits from 1-9.
  • No two rows, no two columns and no two boxes may be missing the same digit.
  • For each 0 in the grid, the digits missing in its row, column and region must be three different digits.
  • Use the cells outside the main grid to keep track of which digit is missing for each row, column and box.

COUNTING CIRCLES:

  • A digit in a circle indicates exactly how many circles contain that digit.

ZIPPERS:

  • Any two digits on a lavender zipper line that are an equal distance from the central spot sum to the digit on that central spot.