Factory Loop
(Published yesterday, 11:20 by marty_sears)
Rules:
Normal sudoku rules apply.
Draw a loop, one-cell wide, that moves orthogonally between cells.
Two loop cells may only touch orthogonally if they are directly connected along the loop. Two loop cells may only touch diagonally where they are either side of a corner cell along the loop (ie; the loop doesn't 'touch itself'.)
A green circle is on the loop, and its digit indicates the number of cells in its 3x3 box that are on the loop.
A red square is NOT on the loop, and its digit indicates the number of cells in its 3x3 box that are NOT on the loop.
For any two neighbouring cells along the loop, dividing one by the other gives an exact integer (one is a multiple of the other.)
Solution code: Column 9 cells that are NOT on the loop, reading downwards
Comments
yesterday, 20:47 by blackjackfitz
Huzzah!
yesterday, 19:50 by Franjo
Thank you very much for creating and sharing another beautiful puzzle. You used these multiple/factor lines for your last DFM-puzzle already, so maybe it’s time to give them an official name? I’m sure that other setters will use them….
Marty: I've been calling them Multiple Lines. I've seen other people call them Factor lines though, which is fair enough... I am enjoying them at the moment!
yesterday, 19:13 by brskri
Neat puzzle, as expected from Marty. It's surprising how many restrictions can come from so little clues -- but the outcome of that is a tight solve path -- very nice.
yesterday, 19:01 by Piatato
Smooth and fun, thanks!
yesterday, 16:10 by highonlife
Ok, I struggled with this one more than I should have.
Nice Puzzle.
yesterday, 14:38 by sujoyku
Thank you for yet another wonderful puzzle, Marty!
yesterday, 14:38 by mscha
A new Marty Sears puzzle! It's been a while... :-)
Very nice one. I found the break-in fairly easy - it helps that we've had a few divisibility puzzles recently - after that it was a bit trickier, but I never got stuck.
yesterday, 13:45 by Sotehr
A true gem among Marty Sears puzzles!
yesterday, 13:36 by amirs
It took me some time in the beginning to convince myself it's not immediately broken and find the initial break in. After that it was very smooth and fun!
yesterday, 13:24 by vukkarak
I have struggled with the beginning but then it was a nice flow!
yesterday, 12:21 by pmays123
Magical puzzle! Thank you
yesterday, 12:08 by Christounet
Miraculous!
This must have taken a while to find the perfect location for the last clues.
yesterday, 11:58 by Prof.Dori
One of my favorite puzzles from Marty, just brilliant from start to finish.
