How to solve Kyudoku Puzzles
- The goal is to find nine solution numbers.
- These are discovered with logic and require no guessing.
- There are exactly one of each number 1 to 9 in the grid.
- No row or column can add up to more than 9.
- Starting with the given solution number, rule out numbers in its row and column that would violate the "More than 9" rule.
- As you eliminate numbers, other eliminations will become logically dedutable.
How to Play
- Touch or click on a cell in the grid to change the state of that number. Once to remove the number. Twice to set it as a solution. Three times to reset.
- The puzzle is solved when there are 9 circled numbers with all other numbers are ruled out.
- Use the remaining numbers in the grid at the bottom to help target numbers.
- Use the number grid below the puzzle to determine numbers that only have a few remaining options.
- If a number can only be in a few places, check for numbers that can rule them all out.
- Since there must be at least one of each number 1-9 in the puzzle, any number that rules out all of the remaining options can itself be removed.
- Sometimes the given number at the start of the puzzle will appear in multiple places. These duplicates can all be removed.
- If there is only one remaining number, it must be a solution.
- Each row and column will have at least one solution number. (Some may have more.)
- When 9 is a solution, all other numbers in its row and column can be removed. (Since any of them will violate the "More than 9" rule.)
- When 8 is a solution, all numbers except "1" in its row and column can be removed. And so on...