Lots Of Loops
(Published on 9. July 2024, 17:38 by gdc)
I spent some time trying out different ideas for beginner-friendly odd-lots puzzles and was surprised to find that a loop puzzle turned out to be the most fruitful. Thanks to the testers and hope you enjoy!
- Sudoku: Normal Sudoku rules apply.
- Modular Loop: Draw a 1-cell wide loop of orthogonally connected cells. The loop can't touch itself, not even diagonally. Every 3 cell sequence on the loop contains a digit from {1,4,7}, a digit from {2,5,8} and a digit from {3,6,9}.
- Odd/Even Lots: Box borders divide the loop into segments. A digit in a circle is on the loop and counts the number of odd digits on it's segment. A digit in a square is on the loop and counts the number of even digits on it's segment.
Example
The loop is modular since every sequence of 3 cells (including seqences that cross borders) contains exactly one digit from {1,4,7}, one digit from {2,5,8} and one digit from {3,6,9}.
Solution code: The digits not on the loop in column 6, top to bottom
Comments
on 21. February 2025, 08:38 by AaronB
Excellent puzzle! Very approachable.
on 4. December 2024, 16:56 by Firebird
Lots of loops was lots of fun!
on 27. August 2024, 00:46 by AsgarArn
Great work, lovely puzzle!
on 2. August 2024, 16:06 by MisterPine
I really enjoyed it. The way the loop is restricted feels really clever
on 20. July 2024, 22:30 by yttrio
Fantastic puzzle! Very smooth solve path with some really nice deductions along the way.
on 17. July 2024, 11:19 by GDP
I really enjoyed that. I haven’t done many loop puzzles and this rules took me a while to get my head around but once I did I loved the logic it offered.
on 17. July 2024, 10:31 by GDP
I really enjoyed that. I haven’t done many loop puzzles and this rules took me a while to get my head around but once I did I loved the logic it offered.
on 16. July 2024, 22:35 by wuc
Another awesome approachable loop puzzle. Great fun to solve thx.
on 14. July 2024, 07:05 by SamuPiano
This one was a lot of fun!
on 11. July 2024, 01:33 by heliopolix
Another brilliant use of Lots! Drawing the loop was tremendous fun, including some surprising solo segments!
on 10. July 2024, 05:40 by MSDOS
Couple of tough spots, but once I wrapped my brain around the main concepts, it was very enjoyable!
