Logic Masters Deutschland e.V.

Normal Sudoku rules apply. Digits on thermometer lines must increase from the bulb. Thermometers also act as palindromes, with the same sequence of digits on each side of the bulb. The gray line without a bulb is a palindrome. The marked diagonal contains all digits 1-9. Digits in the cage sum to 15 and the number outside the grid gives the sum of the indicated diagonal.

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