Odd-Even Sudoku

Even-Odd Sudoku is a logic puzzle. Your goal is to enter a number in each cell so that all even and odd conditions are met.

Rules: In each cell of the NxN grid, enter a number in the range 1–N. Each number must appear exactly once in each row, column, and block.
Additional rules: Cells marked with a circle contain odd numbers; all other cells contain even numbers.