Logic Masters Deutschland e.V.

Friendly Sum Lines

by Md88keys

Play on SudokuPad

Normal 6*6 Sudoku rules apply.
*On red lines, place all Friendly Digits (1-6) and all orthogonally connected Friendly Sums (3-6).
A digit or sum is Friendly if its value matches its row, column, and/or box number. (Friendly Sums must be on the same red line and will only include cells entirely within the row, column, or box which its value matches)
A cell may contribute to more than one friendly value or sum. (For example, a sequence of 1-2-4 could include a combination of the friendly values 1, 2, 3, 4, or 6; depending on placement in the grid.)
*Negative constraint applies: There are no Friendly Digits or orthogonally connected Friendly Sums in the puzzle which are not on the lines.