It is highly possible that this puzzle has never been appeared under any real English name. Title of this article is a provisional one, given to a WPC 2018 puzzle.
Place a given set of pentominoes in the grid. Two pentominoes may only touch each other diagonally. Empty cells cannot form 2×2 areas inside the grid. A cell with a letter in it must be part of the pentomino shape denoted by that letter. Every pentomino covers exactly one letter.
(Example (2 Ws, 2 Xs) from WPC 2018 IB)
History of the puzzle
First appeared on WPC 2018/Round 8. The author was Jiří Hrdina (Czech Rep).
Appearances in the past WPCs
- WPC 2018/Round 8 by Jiří Hrdina