Expert Sudoku for 2026-06-15

Expert Sudoku puzzle published on 2026-06-15, with 27 given clues. Solving it requires the following techniques: Naked Single, Hidden Single, Pointing Triple, Naked Pair, Pointing Pair, Naked Triple, Naked Quad, XY-Wing, Unique Rectangle, XYZ-Wing, Skyscraper, Claiming, 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.