DWG-101.4.10
Sudoku #10 · Expert
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About this puzzle
Sheet #10 starts with 30 givens. Our solver completes it in 55 forced placements, 93% of them singles. Hardest step: XY-Wing.
Beyond singles, the solution path uses Pointing pair ×3, XY-Wing ×1.
The givens are spread unevenly: box 1 holds 5 of them, box 2 only 2 (boxes are counted left to right, top to bottom).
Digit 2 is given most often, 6 times; digit 8 only once.
Where to start
Find a pivot cell with candidates XY that sees one cell with XZ and another with YZ. Any cell that sees both wings cannot be Z.