Logic Masters Deutschland e.V.

• Deconstruction Sudoku: Fill the grid with 9 non-overlapping 3x3 square regions that contain the digits 1-9 once each. Also, place a number into any cells outside of those regions that a line passes through (Numbers outside of the regions do not actually need to be filled in to trigger answer check). Numbers outside of regions may be any valid integer. Numbers that are inside of a region are considered normal sudoku digits. Normal sudoku digits cannot repeat in a row, column, or region. Cells on a line must either be inside a sudoku region or orthogonally adjacent to one.
• X-Sums: A number on a line that is outside of a sudoku region is an X-Sum clue. For any regions orthogonally adjacent to an X-Sum clue, the clue gives the sum of the first X sudoku digits seen from the clue in the direction of X, where X is the sudoku digit orthogonally adjacent to the X-Sum clue. X may not be greater than the number of sudoku cells that exist from the direction of the clue. A gap in between regions does not block the line of sight.
• German Whispers: Numbers along a green line must differ by at least 5.
• Palindrome: Numbers an equal distance from the circled center of the gray line must be the same.

Solve in SudokuPad