Logic Masters Deutschland e.V.

• Sudoku: Each row, column, and region indicated by thick borders in the grid must contain the digits 1 to 9 once each.
• Bosnian road: Draw a 1-cell-wide loop of orthogonally connected cells, which does not branch or touch itself, not even diagonally. Circled cells are not on the loop, and the digit in a circle indicates how many of the up to 8 surrounding cells are on the loop. The cell with the rectangle is on the loop.
• Multiples pairs: For each pair of adjacent digits along the loop, the larger digit is an integer multiple of the smaller digit. Example: 9 is an integer multiple of 1, 3, and 9, but not of the other digits.

You can play this puzzle online using Sudokupad: https://sudokupad.app/0pshsj5ykr