Are there fewer given numbers than normal?

Yes. The shapes carry a lot of the information, so these puzzles start with fewer digits.

Which digits are even and which are odd?

Even digits are 2, 4, 6 and 8. Odd digits are 1, 3, 5, 7 and 9. Zero is not used.

Yes, and it changes at midnight UTC.

Classic Sudoku with clues in the shapes: a circle must hold an even digit and a square an odd one. Fewer numbers, more logic.

Even Odd Sudoku

0% · Getting ready

A real run of the game, recorded with captions and no sound.

Fill the grid so every row, column and 3 by 3 box contains 1 to 9 once.
A cell with a circle must hold an even digit (2, 4, 6 or 8). A cell with a square must hold an odd digit (1, 3, 5, 7 or 9).
Cells with no shape can be anything. Start from the given numbers and the shapes together.
Conflicts, including a wrong even or odd digit, turn red. Each puzzle has exactly one solution.

Controls: mouse, touch or keyboard. Made by CalcoTools.

Count the circles and squares in each row, column and box. A box with four circles needs all four even digits in them.
Every row, column and box holds exactly four even digits and five odd ones. Once you have found four even cells in a unit, every other cell there must be odd.
Use Notes. Cutting a cell's candidates to the odds or evens first makes the rest of the logic much easier.
A cell with a shape and a single remaining candidate is often the key to a whole region.

Are there fewer given numbers than normal?: Yes. The shapes carry a lot of the information, so these puzzles start with fewer digits.
Which digits are even and which are odd?: Even digits are 2, 4, 6 and 8. Odd digits are 1, 3, 5, 7 and 9. Zero is not used.
Is the daily the same for everyone?: Yes, and it changes at midnight UTC.