thingiverse
This is a simple blocks puzzle.
You can build one 6x6 square or two 4x4 squeares or even a 3x3x4 cube.
This puzzle is inspired in the math article "Creating Clueless Puzzles" [[PDF](http://www.math.smith.edu/~jhenle/Files/creatingclueless.pdf)] where the authors present a sudoku like puzzle.
Enjoy it!
Direct link to the original creator's page
Click the "View on thingiverse" button above to visit the original model page on thingiverse. You can download the STL file directly from the creator's page for free.
This STL file is compatible with most FDM 3D printers (Creality Ender 3, Prusa MK3S+, Bambu Lab, etc.) and resin printers (Elegoo, Anycubic). Check the original page for recommended print settings and materials.
Yes, this model is available as a free download on thingiverse. Some creators accept tips or donations.
Most STL files can be modified using free software like Blender, TinkerCAD, or Meshmixer. Check the license on the original thingiverse page to see if modifications are permitted by the creator.