Flow Fit: Sudoku by Big Duck Games LLC FREE

Flow Fit: Sudoku comes from Big Duck Games LLC  The object is to place the numbered pieces into the grid to form a Latin Square. (Technically, this game should be called Flow Fit: Latin Square.)

This game has over 2000 levels.  Many are easy.  Many are tough.

I particularly like the levels that have a question mark on one square.  It means that the value is not the same for both the horizontal and vertical.

This game is strangely addictive.  I think it's because the graphics are so good.
https://apps.apple.com/us/app/flow-fit-sudoku/id1475678781