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Box Logic
Normal sudoku rules apply
Clues outside the grid show the sum of the first X digits in that row or column where X is the first digit
Any two adjacent cells in box x cannot sum to or have a difference of x (eg r7c5,r7c6 cannot be 26 or 19 because they would sum to or have a difference of 8, them being in box 8)
Clues outside the grid show the sum of the first X digits in that row or column where X is the first digit
Any two adjacent cells in box x cannot sum to or have a difference of x (eg r7c5,r7c6 cannot be 26 or 19 because they would sum to or have a difference of 8, them being in box 8)