Intermediate Sudoku for 2026-05-19

Intermediate Sudoku puzzle published on 2026-05-19, with 27 given clues. Solving it requires the following techniques: Hidden Single, Naked Single, Pointing Pair, Claiming, Naked Pair, Naked Quad, Hidden Triple. 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.