Logic Masters Deutschland e.V.

The Rules:

• Standard sudoku rules apply.
• In addition, in every row, column and block there are three special cells. Two cells have 'halves' added to them: e.g. 7 1/2. The other special cell has been made negative.
• Standard killer sudoku rules apply. The cages contain the sum of the cells inside, including their special effects. (e.g. 1 1/2 + 7 1/2 = 9 or 5 + 4 + -7 = 2).
• If a cage contains special cells, it either be a single negative sign, or two halves. The cages will not contain a number and its opposite, nor it's 'and a half'. For example:
  • A cage can not contain 3, 3 1/2, and 5.
  • A cage can not contain 3, -3 and 8
  • A cage can not contain -4, 2 1/2 and 8 1/2.
• The numbers on the outside of the grid are the sum of the cells "sandwiched" in between but not including the halves. For example:
  • The row 1 2 3H 4 5 6H 7 -8 9 could have a 9 outside.
  • The row 1 2 3H 4 -5 6 7H 8 9 could have a 5 outside.

The Puzzle:

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