Bright Eyes

Normal Sudoku rules apply.

Digits must not repeat at corresponding box positions.

Circled digits where four cells meet must be present as values in those four cells.

A black dot between cells indicates cell values with a 2:1 ratio. Not all dots are shown.

Cells on either side of the inequality symbol must have values that abide by the indicated relationship.

Cells with a filled circle must be odd. Cells with a filled square must be even.

The digits in a cage must sum to the number printed in its corner. Digits may not repeat within a cage.