Double Choco
Rules[edit]
Divide the grid into regions of orthogonally connected cells, each containing a connected group of white cells and a connected group of grey cells, with the property that the shape of the white cells is identical to the shape of the grey cells, allowing rotations and reflections. Clued cells must belong to a region containing the indicated number of white cells and the indicated number of grey cells.
(Rules taken from WPC 2022 IB, Example taken from PGP)
History of the puzzle[edit]
First appeared in Nikoli volume 163 (2018). The genre was invented by a reader under the alias of "Airplane". The inspiration for this puzzle partially came from fractal art, which involves repeating patterns at both small and large scales. [1]
Appearances in the past WPCs[edit]
- WPC 2022/Round 1 by Eric Fox
- WPC 2022/Round 8 by JinHoo Ahn
- WPC 2022 Playoffs by JinHoo Ahn