Sudoku is a simple/easy to define problem. You have a 9 x 9 grid and you have to fill the numbers 1 to 9 in such a way that no number is repeated in any row, column, or sub grid. This problem has been explored by a number of people in a number of different ways. Most popular of them all is Peter Norvig’s Solving Every Sudoku Puzzle.

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The principle of layered complexity to display information such a way that your target audience/users can immediately get a high level overview of the topic. While retaining the next level details if the user needs it.

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Using Van der Pol oscillator as a placeholder.

\[{\displaystyle {d^{2}x \over dt^{2}}-\mu (1-x^{2}){dx \over dt}+x=0,}\]

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Python is slow because

• Dynamically typed
• Interpreted
• GIL

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