Easy sudoku 3

An easy nine by nine: enough numbers are printed that every empty square can be settled by looking at what its row, its column and its box already hold. No pencil marks, no chains, nothing that needs a second sheet of paper next to it.

4823956741793662817891634534997231885219359
Show the answer key
167493285239568417485127936694235871728916354513874629972341568846752193351689742

What is on this sheet

Given numbers
43
Difficulty
Easy
Hardest step needed
Naked single
Grid
9 × 9

About this puzzle

Easy here means between 36 and 45 of the 81 numbers are already printed, and that the grid can be finished with single candidates alone. It was graded by being solved by a program that knows the techniques, one at a time, and rejected if it ever had to guess — so there is exactly one answer, and it is on the second page.

This particular grid starts with 43 of the 81 numbers already printed, and the hardest technique it asks for is: Naked single.

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