Expert sudoku 1

An expert nine by nine, at the bottom of the range for given numbers. It asks for the techniques with names — the ones you either know or look up — and it was graded by solving it with those techniques and nothing else: no guessing was needed to build it, so none is needed to finish it.

3624832915431763913876745
Show the answer key
356728491918436752724951368581374926263895174479612583845169237132587649697243815

What is on this sheet

Given numbers
25
Difficulty
Expert
Hardest step needed
Y-wing
Grid
9 × 9

About this puzzle

Expert means 22 to 26 given numbers, the smallest count on the site, and more than one hard step on the way through. It is still a logical puzzle from start to finish — every grid here was proved solvable by technique alone before being published — and the one answer prints on the second page.

This particular grid starts with 25 of the 81 numbers already printed, and the hardest technique it asks for is: Y-wing.

More like this one