Logic Masters Deutschland e.V.

Normal sudoku rules apply. The digits 1 - 9 need to show up once in each column row and box.

Palindrome - Digits on a palindrome are the same forward and backwards. (eg. 48384)

Sandwich - The number outside the row or column is the sandwich number. It represents the sum of the digits between the 1 and the 9 in that row or column.

Thermo - Digits on a thermo need to increase from the bulb

Click on the image to play on sudoku pad.