Intermediate Sudoku for 2026-05-18

Intermediate Sudoku puzzle published on 2026-05-18, with 28 given clues. Solving it requires the following techniques: Hidden Single, Naked Single, Pointing Triple, Claiming, Naked Triple, Naked Quad, Naked Pair. 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.