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Featured Puzzle: Tridoku #1

ByJacob Valdez

Today we have an interesting Sudoku variant. The Christmas tree displayed is a Tridoku puzzle. Fill in each cell of the tree with the digits 1-9. You may not repeat any numbers in:

  • Any 9-cell large triangle
  • The legs of the large outer triangle
  • The legs of the inner triangle

The red ornaments are purely decorative, not a separate region. They belong to both the inner and outer triangles.

Be on the lookout for a future Tridoku Solving Guide.

Want to try it online? Click here!

Congratulations! Enjoy the holiday season!

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Featured Puzzle: Meadows #2 – Black Cat Strut
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Featured Puzzle: Meadows #2 – Black Cat Strut

Today is Black Cat Appreciation Day! Did you know that black cats wait an average of 2-3 days longer to be adopted, because of superstition? It’s a shame, and I can attest to their delight, since I’ve had several pblack cats keep me company throughout my life.

Now, we know that cats are territorial, so today we’ll theme a Meadows puzzle. Simply divide the grid into squares, each containing a single black cat.