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An interactive Sudoku game built with React 19 and Tailwind CSS 4 lets users fill a 9x9 grid with digits 1–9 across three difficulty levels. The interface displays the board, highlights selected cells, and provides buttons for reset and auto-solve. Puzzle generation, move validation, and the backtracking solver come from the `generateSudoku`, `isValidMove`, and `solveSudoku` functions in `utils/sudokuLogic.js`. React state manages the board, original puzzle, selection, and win detection, while CDN-imported React and Tailwind power the responsive UI.