Solo
A digit that fits a row may already belong to its box. Use rows, columns and outlined regions together to fill this number puzzle.

How to play
Select a blank cell and type a digit. A digit can appear once in its row, once in its column and once inside its bold outline. Backspace clears the selected cell.
Playing tip. Pick a nearly complete row, column or box. Write down what is missing, then cross-check the other two directions.
Read the game instructions ↗Game by / provided by Simon Tatham’s Portable Puzzle Collection ↗ · License
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