YYSL Quads
(Published on 24. July 2023, 16:00 by Blobz)
Normal sudoku rules apply.
Shade some cells such that all shaded cells are orthogonally connected and all unshaded cells are orthogonally connected and no 2x2 area is fully shaded or unshaded.
Digits in caged cells indicate how many cells of the same color (shaded or unshaded) are seen orthogonally from that position, including itself. The "other" color blocks vision.
Digits in circles must appear within the surrounding 2x2 area.
Have fun, leave a comment if you enjoy the puzzle!
Solution code: Row 4 followed by Row 5
Comments
on 11. August 2024, 16:57 by Cosinus
Hat to overthink the quads, but really enjoyed the solve! Thanks!
on 29. July 2024, 18:27 by wuc
Great fun again. Awespme series. Every puzzle hits new ides. Thx.
on 28. September 2023, 13:59 by Sinuit
Great puzzle! At first I wanted to give up having no clue what to do at first, but then I remembered the most important secret for Yin Yang puzzles. :-)
Thanks!
on 18. August 2023, 16:24 by puzzlepandit
That's one hell of a roller costar ride. One of those puzzles which when you complete gives you peaceful sleep at night. Really enjoyed it.
on 7. August 2023, 08:25 by cmatthews30
This is the first one of these YYSL puzzles I have been able to do. This one was really fun! It took me 35 minutes, as I did fall into a few sinkholes of subpar logic.
on 26. July 2023, 05:48 by KyleBaran
Exceptional puzzle! It's the kind where you need to actually think before it will give up any secrets, but it is quite logical and well constructed. The break in was a pleasant challenge. 62 mins for me, hope it gets a CTC feature!
on 25. July 2023, 19:08 by Snookerfan
Very nice! Thank you
on 25. July 2023, 16:07 by WeakSolver
133 minutes lol. But I got there in the end, great puzzle.
on 25. July 2023, 10:51 by Nemefish
Tricky but very fun.
on 24. July 2023, 21:24 by sacklunch
Fantastic puzzle! Tricky but perfectly logical, I really enjoyed this one. Thanks for setting and sharing!
