Hidden Triple
Expert
Used by Smart Hint
Three guaranteed digits only fit in the same three cells of a run — strip those cells down to just those three.
- Cells that establish the pattern
- Where the conclusion lands
- Digit ruled out
How it works
- Five cells summing to 33 leaves only two combinations: {4, 5, 7, 8, 9} and {3, 6, 7, 8, 9}.
- Whichever it is, a 7, an 8 and a 9 all appear in this run.
- The first two cells can't hold any of them, so those three digits are squeezed into the last three cells — one each.
- Strike every other candidate from those three cells.