Logic Masters Deutschland e.V.

One Step At A Time

• Normal sudoku rules apply: Place the digits 1 to 9 in every row, column, and 3×3 box without repetition.
• Kropki Dots: A white dot between two cells indicates that the digits are consecutive. A black dot between two cells indicates that one digit is double the other. Not all possible dots are necessarily given.
• XV Sudoku: An X between two cells indicates that the digits sum to 10. A V between two cells indicates that the digits sum to 5. Not all Xs and Vs are necessarily given.
• Killer Sudoku Cages: The digits within a cage (outlined region) must sum to the number indicated in its corner. Digits cannot repeat within a cage.
• Thermometers: Digits along a thermometer must increase strictly from the bulb to the tip.
• Dynamic Fog: Portions of the grid are initially covered by fog. As digits are correctly placed, the fog dynamically clears, revealing more of the puzzle.

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Enjoy!