### Triplets by Palmer Mebane

*This week we are sharing easy sample puzzles from our ebook The Puzzlemasters’ Workshop which showcases six authors exploring new puzzle styles or variations with 8-10 challenges in each section. Today’s post is Triplets.*

**Theme:** Clue Symmetry and Logic

**Background:** An original number placement puzzle created by Palmer Mebane.

**Rules:** Fill each cell with a number so that all 27 three-digit numbers with digits 1, 2, or 3 are used exactly once. For each pair of cells sharing a side, the two numbers in those cells must have equal digits in exactly two of the three positions (ones, tens, or hundreds).

**Example by Palmer Mebane:**

(No official times or solution entry for this week; just click “SOLVE?” when finished.)

**Solution:** Last page of PDF

**Note:** More Triplets puzzles can be found in *The Puzzlemasters’ Workshop*.