Tuesday, 15 July 2025

Lavaloid

Today's GAPP was actually intended for Instructionless Week, but it was scrapped during testing because the rule deduction was too hard. (If you skip the next two paragraphs you can probably still solve it as an instructionless.)

Later, I found out that this ruleset is almost exactly the same as an existing genre by Naoki Inaba, the only difference being that my ruleset only allows L trominoes. Which leads to a weird situation where the variant of a genre is posted before the original, but I guess that saves me the effort of naming the genre. Enjoy today's Slide Block / スライドブロック (L's only)!

Rules: Place L trominoes (a group of three orthogonally adjacent cells that form an L) on the grid such that each tromino contains exactly one arrow, and each arrow is part of exactly one tromino. Each tromino must be able to move at least one block in the direction of the arrow without overlapping any other trominoes.

Finish the puzzle in 3:00 or less for a Speedy Sloth 🦥!
Finish the puzzle in 6:00 or less for a Quick Crab 🦀!
Finish with any time at all for a Rejected Robin 🐦!

Example (Penpa+): https://tinyurl.com/yusbs9zk
Puzzle (Penpa+): https://tinyurl.com/yqy7xdfz

Lavaloid

Mind the GAPP vol. 44


...is here! We have 3 bonus puzzles this time. Have fun!