Expert Sudoku for 2026-06-04

Expert Sudoku puzzle published on 2026-06-04, with 27 given clues. Solving it requires the following techniques: Naked Single, Hidden Single, Pointing Pair, Swordfish, Finned X-Wing, XY-Chain, Unique Rectangle, Discontinuous Nice Loop, XY-Wing, W-Wing, X-Wing. 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.