Logic Masters Deutschland e.V.

Place the digits 1-6 in a six by six grid (to be located by the solver). Within this grid, normal 6x6 sudoku rules apply. Outside the 6x6 sudoku grids, all digits are zero and they do not count towards any of the clues. In addition, the grid is divided into six regions, Red, Orange, Yellow, Green, Blue and Purple (R,O,Y,G,B,P). Each region contains the set of digits 1-6 exactly once. This is to be located by the solver. No region may touch more than two regions either diagonally, nor orthogonally. Letters outside the grid indicate where a particular region begins. Exactly two of the regions are placed such that mixing the colors around those regions, yields the color of that region. Additionally, Yellow region acts as a parity line. First n cells along the Green region form a thermometer. Where n is the first digit of the Green region.

The sudoku is covered in fog. Entering the correct digit would clear the fog somewhere in the grid. This may or may not reveal clues outside the sudoku grid.

Kropki : Digits seperated by a black dot indicate that the digits are in a 1:2 ratio. All consecutive kropki dots lie in the same region. Additionally, any set of kropki cells that do appear in the grid, form a palindromic line when placed next to each other.

X-sums Thermos : The clue outside the grid indicates the sum of first x digits in the 6x6 sudoku grid, where x is the first sudoku digit seen by the clue. Additionally, all the digits participating in the x-sum also act as thermometeres, with the bulb end being the cell closest to the clue. (Digits must increase from the bulb end of the thermometer).

Cells seperated by a 'V' sum to 5.