Cornerstones [Sum Dot Infinity Loop]
(Published on 26. April 2023, 22:15 by wisty)
Standard infinity loop rules apply:
• The puzzle consists of a series of rings such that each ring has a neighbor to the inside and a neighbor to the outside. The rings form a loop with the outermost ring connecting to the innermost ring.
• Place a digit from 1-6 in each cell such that no digit repeats in a row, column, or any quadrant (marked by bold lines) of any grid made by two adjacent rings.
Standard sum dots and parity rules apply:
• Digits in shaded squares must be even.
• Digits in shaded circles must be odd.
• Clues in diamonds refer to the sum of the two cells touching that diamond.
I highly recommend solving via this Puzzle TV link which lets you scroll through the quadrants in an intuitive way.
This puzzle is meant to demonstrate an advanced technique. For a more approachable introduction to infinity loop, chameleon has published some infinity loop puzzles as well.
Solution code: the first and last rows of ring 4 (pink in the full grid image)
Comments
on 22. February 2024, 19:33 by Nordy
Awesome mind-bender! I appreciate the subtle hint given by the [redacted]
on 15. May 2023, 13:58 by Playmaker6174
Just astoundingly cool puzzle! Certainly took a long while to figure out the needed advanced techniques and dang, spotting that one or two breakthroughs was really satisfying x)
on 30. April 2023, 01:55 by Raumplaner
Very challenging, but also very rewarding. Great puzzle!
