Expert Sudoku for 2026-01-31

Expert Sudoku puzzle published on 2026-01-31, with 26 given clues. Solving it requires the following techniques: Pointing Triple, Naked Pair, Naked Single, Naked Triple, Hidden Single, Pointing Pair, Naked Quad, XY-Wing, W-Wing, 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.