Logic Masters Deutschland e.V.

Tetrakis pentominous

(Published on 22. June 2021, 10:09 by Aspartagcus)

A different kind of pentominous puzzle based on the tetrakis square grid.
Many thanks to Swaroop for implementing support for this grid in Penpa+, and other interesting new types grids as well.

I find it hard to assess the difficulty of this puzzle, some might find it quite hard while some probably will find it quite easy. I've put an average as a compromise.

RULES:
- Tile the grid with triangle pentominoes (a set of 5 triangles that are orthogonally connected) such that no two pentominoes of the same shape share a border.
- All cells which contain a letter are part of the shape which corresponds to that letter (as shown in the image).

Below is a smaller example puzzle, which can be played here: Penpa+


And this is the puzzle:


Enjoy!

Link to solve it online:
Penpa+ (with answer check on green edges or green lines)

Solution code: The letters of the shapes in column 2 from top to bottom, followed by row 2 from left to right. (In the example grid, this would be ILPJLLPYJI.)

Last changed on on 18. August 2021, 22:06

Solved by Jesper, ildiko, MagnusJosefsson, hurrdurr, Vebby, Mark Sweep, cha, Gaabje1234, MicroStudy
Full list

Comments

on 10. August 2023, 07:07 by MicroStudy
linex on this grid looks super weird but i highly recommend it

Last changed on 18. September 2021, 09:59

on 18. September 2021, 09:20 by Mark Sweep
It was a lot less intimidating than I would have thought. The nice logical path definitely helped!

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Yep, it's quite restrictive. :)
Thanks for solving!

Last changed on 21. August 2021, 17:43

on 20. August 2021, 23:26 by Vebby
Very nice! Interesting grid, took me a while to get acclimatized. Felt it got easier as the solve progressed. Thanks Aron!

PS for future solvers: For activating solution check on Penpa+, use Edge -> Normal, not Edge -> Free.

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Thank YOU for solving! :D

on 18. August 2021, 22:06 by Aspartagcus
Added "Online solving tool" tag

on 4. August 2021, 20:45 by Aspartagcus
Added tags.

Last changed on 20. August 2021, 23:37

on 2. July 2021, 11:46 by MagnusJosefsson
Very interesting and cool puzzle! Getting started was the most challenging part for me, after placing the first six or so pentominoes it flowed very smoothly. Very aesthetically pleasing grid as well!

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Thank you, that means a lot to me. :)

on 29. June 2021, 12:39 by Aspartagcus
Changed difficulty from average to hard.

Last changed on 23. June 2021, 00:14

on 22. June 2021, 19:13 by Jesper
Very creative! It was a slow but steady solve for me, since I was completely unaccustomed to this type of grid. Fascinating how different the logic is from normal Pentominous.

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Thanks for solving! Yes, it takes a bit of getting used to, but I actually find it easier to solve than normal pentominous. The grid makes it quite a bit more restrictive than with a square grid (which made it much easier to break the puzzle while setting, but it was still lots of fun to set).
Tack!

Difficulty:4
Rating:N/A
Solved:9 times
Observed:5 times
ID:0006QQ

Puzzle variant Online solving tool Triangular Pentominoes

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Solution code:

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