Logic Masters Deutschland e.V.

Jabberwocky

• Please READ FULL RULES before attempting. Thanks and enjoy!


• Arrows: The digits along each arrow must sum to the digit in the circled cell. Digits may repeat on arrows if allowed by other rules.
• German Whispers: Adjacent digits along each German whisper line (green line) must have a difference of at least 5.
• Renban: Digits along each renban line (magenta line) must be a set of consecutive digits in any order, and must not repeat.
• Entropic: Any set of three sequential cells along an entropic line must contain a low digit (1-3), a medium digit (4-6), and a high digit (7-9).
• Kropki: A black dot between cells indicates cell values with a 2:1 ratio. A white dot between cells indicates cells with consecutive values. Not all dots are shown.
• Cells with color are used in Stage 2, but otherwise have no purpose.


• This puzzle is solved in 3 stages:


• Stage 1:
• Normal Sudoku Rules DO NOT apply.
• Place the digits 1 to 9 exactly once in each row and each column.
• Each 3x3 box within the grid is solved as an abstract 3x3: three digits need to be placed in each row and column once each. It's up to the solver to determine which three digits they are. (Valid digits are from the range 1-9 and are the same for each row/column). These 3x3’s are NOT necessarily solved independently. You may need to use clues from other boxes in the grid in order to complete these.


• Stage 2:
• Color the entire grid into three different snakes whose heads and tails are the given cells with the same color.
• These snakes are non-branching and do not touch themselves orthogonally or diagonally.
• Exactly one of the snakes contains all of the white kropki dots.
• The black kropki dot is a border between two snakes.


• Stage 3:
• Erase all of the digits that appear on the longest snake.
• Erase all of the digits that appear on arrows (including the circles).
• Erase all of the digits that appear on Renbans.
• Now, solve as a regular variant Sudoku using the constraints in the grid and remaining numbers as givens.
• Normal sudoku rules will apply at this point.

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Enjoy!