Logic Masters Deutschland e.V.

TVDK kindly asked for more puzzles using Battenburg type of clues and i took the opportunity to use Phistomefel's Team Sum ruleset. Hope you like it.

• Normal Sudoku rules apply.
• Team Sums:
  • Divide the digits from 1 to 9 into two teams such that every digit from 1 to 9 is in exactly one of the two teams.
  • The finished grid is divided into orthogonally connected areas which contain only digits from the same team and are bounded by digits of the other team and/or the border of the grid.
  • A number clue gives the sum of all the digits in such an area. A ? stands for a digit 0-9. Clues do not have leading zeros.
  • Digits may repeat in such an area and the sum clues are in an arbitrary position within the area.
  • Each area has at most one clue, but may also have none at all.
• Battenburg: A 2x2 area marked with a checkerboard indicates that the teams are different for each pair of orthogonal cells in the 2x2 area. All possible checkerboard marks are given.

Online in Sudokupad.

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