In my spare time I’ve been designing a browser-based logic puzzle game called Grey Is Odd. It’s inspired by ideas from parity, constraint grids, and nonograms — but the deduction flow is different.
Core rules: • The grid is divided into grey regions and white regions. • Each cell can contain 0 or 1 dot. • Grey regions must contain an odd number of dots. • White regions must contain an even number. • Each row and column shows the exact number of dots that must be placed in that line. • The rest is pure deduction — no guessing required.
Here is a 7×7 Level 3 puzzle so you can try it immediately: https://greyisodd.com/?size=7x7&level=liv3&id=4806&daily=tru...
If you prefer to start from the main page: https://greyisodd.com/
If you want a substantially harder example, try 7×7 Level 4 #45915 via the “Find puzzle” button. It has a deeper chain of parity/region interactions, but it still has a fully logical solution path — no need for trial-and-error.
I’d love feedback on: • how intuitive the rules feel • puzzle difficulty balance • UX (especially on mobile) • performance issues • ideas to make the deduction more interesting
If you try a puzzle and get stuck, I’m happy to walk through the reasoning.
Thanks for reading!