Expert Sudoku for 2026-01-07

Expert Sudoku puzzle published on 2026-01-07, with 27 given clues. Solving it requires the following techniques: Naked Single, Hidden Single, Pointing Pair, Claiming, Naked Quad, Naked Triple, X-Wing, 2-String Kite, XY-Wing, W-Wing, 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.