What is Woodoku and how do you play it?

Woodoku is a puzzle game that amalgamates the principles of Sudoku with wooden block gameplay similar to Tetris. Players must place differently shaped wooden block pieces onto a 9x9 grid with the objective of filling rows, columns, or squares to clear them off the board and earn points. The gameplay involves strategic placement of these pieces to keep the board from filling up while trying to score as many points as possible. As there is no time limit, users can take their time to plan moves carefully. When no more blocks can fit on the grid, the game ends, compelling players to beat their high score with each new attempt.