Expert Sudoku for 2026-06-09

Expert Sudoku puzzle published on 2026-06-09, with 28 given clues. Solving it requires the following techniques: Naked Single, Hidden Single, Pointing Triple, Naked Pair, Naked Triple, Naked Quad, Finned X-Wing, W-Wing, Claiming, Skyscraper, XY-Chain, X-Wing, Unique Rectangle. 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.