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Programming Puzzle: Lights Out. I encountered this puzzle as a… | by K.L. de Vries | The Startup | Medium
![visual - I am struggling with a complex version of the "lights out" puzzle - Puzzling Stack Exchange visual - I am struggling with a complex version of the "lights out" puzzle - Puzzling Stack Exchange](https://i.stack.imgur.com/bNwww.png)
visual - I am struggling with a complex version of the "lights out" puzzle - Puzzling Stack Exchange
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Easy Large Print: Very Large Print Sudoku Puzzles for Seniors : 100 Easy Sudoku for Adults: One Extra Large Print Puzzle Per Page and Space for Working Out the Answers, Light Blue
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