Logic Masters Deutschland e.V.

Title: Phoenix Rising
Type: Irregular Sudoku
Link: CTC App link to Phoenix Rising Sudoku
Link: F-puzzles link to Phoenix Rising Sudoku
Variants: Anti-King, Kropki Pairs, Killer Cages, Negative Diagonal

0) Irregular Sudoku

• Place the digits 1 through 9 once each in every row, column, and region.

1) Anti-King

• Cells that are a chess king's move apart must not contain the same number.

2) Kropki Pairs

• 2.1) Two cells adjacent to a white dot have a difference of 1 and are consecutive.
• 2.2) Two cells adjacent to a black dot have a ratio of 1 to 2.
• 2.3) Not all dots have been given. There is no negative constraint.

3) Killer Cages

• 3.1) Digits in a killer cage add to the total in the top left.
• 3.2) Digits cannot repeat in a cage.

4) Negative Diagonal

• Digits along the negative diagonal cannot repeat. The nine digits make one complete set from 1 to 9.