Code Katas
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N-Queens
Place N Queens on the board, without any Queen attacking any other Queen.
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Knight's Tour
Move a knight across a chessboard visiting every square exactly once. Watch algorithms solve this classic problem using backtracking and heuristics.
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Sudoku
Classic 9x9 Sudoku puzzle with setup and solve modes. Watch different algorithms solve puzzles using backtracking, constraint propagation, and heuristics.