Logic Masters Deutschland e.V.

So sujoyku launched a prompt to make puzzles using addition and multiplication, and here I implemented region product lines and multiplicative cages along with adder modifiers as introduced by Silverstep's On The Bottom Shelf.

• Normal sudoku rules apply.
• Adder Cells:
  • Place nine adder cells so there's exactly one in each row, column and box.
  • Each adder cell increases the value of all orthogonal neighbor cells by D, where D is the digit in the adder cell, but it doesn't increase its own value.
  • Digits may not repeat in the adder cells.
• Box borders split red lines into segments with the same value product. That same product may be different for different lines.
• Values in a cage have a product equal to the indicated total.

Online in Sudokupad

See also:

• mini homage duo
• the second bowl