Logic Masters Deutschland e.V.

Title: Call me again--maybe?
Type: Irregular Sudoku
Link: Penpa+ link to Call me again--maybe? Sudoku You may use Normal/Large/Medium/Small Blue, Green, or Red numbers in any combination.
Link: F-puzzles link to Call me again--maybe? Sudoku
Link: CtC App link to Call me again--maybe? Sudoku
Variants: Renban, Diagonal, X-Sums, Between Lines, Even/Odd, Oddruple, Anti-Knight, Sandwich, Lock Out Lines

Irregular Sudoku rules apply and the following--maybe! There are extra constraints numbered 1 through 9. If the digit of a constraint appears in a blue cell all occurrences must all be true; otherwise, if its digit does not appear in a blue square NO occurrences can be true. The solver needs to determine if an outside clue is Sandwich or X-Sums.

No bifurcation or guessing is required.

0) Irregular Sudoku

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

1) Renban

• All of the numbers along the purple Renban lines must be consecutive, but in any order, and cannot repeat.

2) Diagonal

• The digits 1 through 9 must appear on the diagonal and cannot repeat.

3) X-Sums

• The number outside of the grid is the sum of the first X digits where X is the first digit in the row or column.

4) Between Lines

• Digits on the line between the circles must be between but not the same as the digits in the circles.

5) Even/Odd

• 5.1) Digits in a grey circle are odd.
• 5.2) Digits in a grey square are even.

6) Oddruples

• The digit inside a white circle indicates how many of the four surrounding digits are odd.

7) Anti-Knight

• Digits cannot be a chess knights move apart.

8) Sandwich

• The number outside of the grid is the sum of the digits between the 1 and 9 in the row or column.

9) Lock Out Lines

• 9.1) Digits in diamonds must be at least 4 apart.
• 9.2) Digits on the line between the diamonds must not be between or equal in value to the digits in the diamonds.