DWG-101.2.04
Sudoku #4 · Medium
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About this puzzle
Sheet #4 starts with 32 givens. Our solver completes it in 49 forced placements, 100% of them singles. Hardest step: Single candidate.
Singles carry this grid all the way — no pairs, no patterns.
The givens are spread unevenly: box 4 holds 5 of them, box 1 only 3 (boxes are counted left to right, top to bottom).
Digit 7 is given most often, 6 times; digit 5 only once.
Where to start
At least once you will need to look at a single cell and rule out eight digits. Notes make that spot obvious.