Double Counting
(Published on 24. August 2026, 00:12 by jwsinclair)
Normal sudoku rules apply.
Double arrows: the sum of the digits along each burgundy line is equal to the sum of the two digits in the connected circles.
Counting Circles: a digit in a double-arrow circle indicates how many circles in the puzzle contain that digit.
Quadruple circles: the digit inside the white circle appears in one of the four cells surrounding that circle.
Digits in cells separated by an X sum to 10.
Play online
Note: I set the initial difficulty at 4/5.
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Solution code: row seven
Comments
on 28. August 2026, 23:41 by Qodec
Clever. Liked that.
on 28. August 2026, 22:47 by emoney1374
Very cool puzzle!
on 26. August 2026, 07:30 by ThomasR
Very nice, but not 4* difficutly. Once broken in, it's just very easy.
on 25. August 2026, 07:14 by Crusader175
Fun puzzle!
on 24. August 2026, 22:25 by amirs
Lovely puzzle, really nice break-in and not too difficult
on 24. August 2026, 20:05 by GeorgeTheToad2
I give it 2* difficulty and 5* beauty. The break-in is nicely done.
on 24. August 2026, 19:42 by sujoyku
Awesome puzzle! Thank you for this wonderful construction, jwsinclair!
on 24. August 2026, 18:43 by prodigis
Really lovely relationships in your constraint choices, thanks for the puzzle
on 24. August 2026, 17:54 by Franjo
Thank you very much for creating and sharing another wonderful puzzle. Brilliant break-in!
on 24. August 2026, 16:49 by jwsinclair
added comment about difficulty
on 24. August 2026, 16:10 by Snookerfan
Very nice! I found the break-in a bit tricky, so there may have been an easier way in. Thanks
--
Thanks so much! Without knowing what you found, I do think there's a break-in that's not *that* tricky, but it might be hard to find and can probably be bypassed. I'm going to edit the post to note that I put the initial difficulty at 4*
on 24. August 2026, 15:42 by TonySopranosGhost
Really nice puzzle. Thanks a lot!
on 24. August 2026, 13:41 by fuxia
Very nice puzzle! Double arrows is my favorite constraint. I made a puzzle with the same rule set about a year ago: https://logic-masters.de/Raetselportal/Raetsel/zeigen.php?id=000N9H
on 24. August 2026, 08:25 by Piatato
Very smooth, thanks!
