Wednesday, 25 March 2026
The 3rd round of the puzzle GP will be brought to you by the authors of Poland. You can find the instructions booklet here: https://gp.worldpuzzle.org/content/instruction-booklet-2. The contest starts this Friday and ends on Wednesday. I encourage everyone to give it a go! 🦦 🦦
Yin-Yang (Windows) is one of the many genres that will be appearing.
Rules: Place a white circle or a black circle into every cell such that all cells with white circles form one orthogonally connected network, and all cells with black circles form one orthogonally connected network. No 2x2 of cells may contain only one circle type.
Cells in the same positions in the corresponding windows (the two rectangular regions marked in the grid) must contain circles of opposite colours.
Note: You can use shading or circles for answer check. The shading on the given circles is to distinguish given circles from circles inputted by the solver - they can otherwise be ignored.
Here's the last appearance of classic Yin-Yang in GAPP, courtesy of jovi:
Acquire a Speedy Sloth 🦥 by solving the puzzle in 2:00 or less!
Obtain a Quick Crab 🦀 by solving the puzzle in 4:00 or less!
And all solvers who complete the puzzle will be rewarded with a Pierogi Pied Puffbird 🐦
Example (Penpa+): https://tinyurl.com/5ha9zz7h
Puzzle (Penpa+): https://tinyurl.com/yc4hvucf
