Logic Masters Deutschland e.V.

This puzzle means a lot to me. It was the second idea of a puzzle and it took a bit to find the right constraints. There are a few of them in this puzzle. I want to say thanks to all solvers for the solve and for all the comments on my puzzles.

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Normal Sudoku rules apply.

Additionally:

· 2 diagonals (1-9)

· The sums of the yellow rings are equal

· Antiqueen: For the 9s, no queens-move in chess apart

· The 5th (middle) box is a magic-box: the sum of each row, column and diagonal is equal

· The black ratio-dot (1:2) in the first column is not the only one. Possible dots are not given.

· There are 2 thermos (increasing from the bulb). To find the orientation of the thermo in column 8 is part of the solution path.

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