TOUCHY SUDOKU

Fill in the grid with the numbers 1 through 9. Each row, column and outlined 3x3 box must contain these
numbers exactly once.

Every number in the grid must have at least one consecutive neighbor  in the adjacent cells.

When you have completed the puzzle, submit the sum of all the numbers in the highlighted squares to iletisim@bilkent.edu.tr.

E-mails 17 and 18 get a free game of bowling at Roll House.