Weihnachtsmann rot

Challenge from 5. December

Kudosu

Author: Cor Hurkens

Challenge:

Kudosu is a variant of the well-known Sudoku puzzle. The 81 cells in the following 9 × 9 scheme are to be filled with the digits 1, 2, 9 so that each row and each column contains each of these nine digits exactly once. Furthermore, each of the nine regions (framed with bold lines) should contain each of these nine digits exactly once.

PIC

We would like to know: Which digit is going to show up in the cell marked by a star?


Artwork: Friederike Hofmann

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Possible answers:

  1. The cell marked by a star contains the digit 1.

  2. The cell marked by a star contains the digit 2.

  3. The cell marked by a star contains the digit 3.

  4. The cell marked by a star contains the digit 4.

  5. The cell marked by a star contains the digit 5.

  6. The cell marked by a star contains the digit 6.

  7. The cell marked by a star contains the digit 7.

  8. The cell marked by a star contains the digit 8.

  9. The cell marked by a star contains the digit 9.

  10. The contents of the cell marked by a star is not determined uniquely.

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