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Sudoku solution – New York Times 20 July 2026 Hard level sudoku

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355 views14likes24:18zen_art_of_guardian_sudokuOriginal Release: 2026-07-20

This video demonstrates a systematic approach to solving hard-level Sudoku puzzles by using pencil marks to track candidates, identifying pairs (two cells that can only contain two specific digits), and applying blocking techniques to eliminate possibilities. The solver works through the puzzle methodically, starting with digit 8, then identifying pairs of 5s, 3s, 2s, 7s, and 9s, before finding a single 6 placement that unlocks the rest of the puzzle. The key strategy involves keeping candidates minimal, recognizing when a block is complete, and using logical deduction to place digits one by one until the puzzle is solved.