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Spectre Displayer

A user-friendly and lightweight application that enables users to easily generate spectra of atoms and ......

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Sudoku Countdown

If you have not played Sudoku before, you must be start playing. It?s very simple and highly addictive. Place the numbers 1 to 9 in the grids so they only appear once in each row, column and 3X3 domai...

Sudoku numbers training

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