Expert Sudoku for 2026-02-21

Expert Sudoku puzzle published on 2026-02-21, with 28 given clues. Solving it requires the following techniques: Naked Single, Hidden Single, Pointing Pair, Claiming, Naked Pair, Skyscraper, XYZ-Wing, Unique Rectangle, XY-Wing, XY-Chain. Every puzzle on this site is generated by Dancing Links and then verified by a tiered human-style solver, so it is guaranteed solvable with logic alone – no guessing or backtracking.