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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: Moon or Sun #1 – Path of the Eclipse

Today’s the day of the total solar eclipse! Thousands of people have traveled to visit the path of totality. As you know, a solar eclipse happens when the moon passes in front of the sun. So let’s play with that theme. This grid is divided into regions. Draw a single closed loop that visits every region.