Logic Masters Deutschland e.V.

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PUZZLE:

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RULES:

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Normal Sudoku rules apply.

• Dutch Whisper (orange): Digits along each Dutch Whisper line must differ in value by at least four [4].
• German Whisper (green): Digits along each German Whisper line must differ in value by at least five [5].
• Killer: The value of digits within a cage must sum to the number in the top-left corner (if given) and digits must not repeat within a cage.
• Kropki (consecutive): White dots separate two cells containing digits of consecutive value (not all dots are given).
• Kropki (ratio): Black dots separate two cells where one is double the value of the other [ratio of 1:2] (not all dots are given).
• Thermometer: Digits along a thermometer must increase in value from the bulb to the tip.

Note: Kropki (ratio) and Kropki (consecutive) are considered two different constraints.

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MODIFIER:

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• Decay: For all of the above rule-set, a digit may only repeat in a clue of the same type if it is then reduced in value by some multiple of 2 (e.g. an 8 used within a Killer cage may only be used in additional cages if it is valued at "4", "2" or "1"; if used a third time, it must again contain a different value from previous). Each type of constraint maintains its own set of Decay values and no digit may represent a fractional value. It is up to the solver to determine the value of each digit (if relevant).

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INTRODUCTION:

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This puzzle was made as an introduction to a previous puzzle, entitled "Half-Life²". People seemed to have steered clear of the puzzle because of its apparent complexity, so I made this puzzle to help familiarize people with the ins-and-outs of the logic - it's manageable and rewarding once you get into it. This may actually rob a bit of the challenge from that first puzzle but if you'd like to tackle it afterwards, I'm sure you'll find it a much smoother solve.

An example puzzle will follow to better illustrate the rules (in the example, lines along a line must differ by a value of at least 2).

Have fun!

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Solve in f-puzzles!
Solve in SudokuPad!

Note: It is recommended you turn off the conflict checker during your solve (having a solution inputted provided unintentional spoilers during testing).

Solve in SudokuPad (with solution) ...beware of spoilers!