Logic Masters Deutschland e.V.

Besides the standard Sudoku rules (the figures from 1-9 once each in every row, column and 3x3 block) there are 4 sub-puzzle rules:

Brick Wall (blue): in every brick must be one odd and one even figure

Killer (light brown): the figures in each cage sum up to the little figure in the top left corner of each cage

Thermo (light red): the figures are rising from the light red circle along the line (but not necessarily directly following each other)

Renban (green): the figures in an area must be unique and must form a sequence without gaps (e.g. 3,4,5,6), but not necessarily in the natural order (e.g. 4635 is allowed)

The 5 circles show connections between two fields and have to be read from left to right or from top to bottom; e.g. "-1" means: the first figure minus 1 equals the second figure