Expert Sudoku for 2026-01-23

Expert Sudoku puzzle published on 2026-01-23, with 27 given clues. Solving it requires the following techniques: Naked Single, Hidden Single, Pointing Pair, Claiming, Naked Quad, XY-Chain, Naked Pair, Unique Rectangle, W-Wing, BUG+1. 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.