Combined Effort
(Published on 27. April 2026, 19:46 by jwsinclair)
Combined Effort, by James Sinclair
Normal sudoku rules apply.
Arrows: the sum of the digits along an arrow is equal to the digit in the connected circle.
Double arrows: the sum of the digits along the burgundy line is equal to the sum of the digits in the circles at each end.
Digits in cells separated by a black dot have a 1:2 ratio.
SudokuPad
This puzzle originally appeared in Artisanal Sudoku, Volume 225. Like every multiple of 45, this is a special paywall-free edition: bonus puzzles and hints for all!
Solution code: row 9
Comments
on 20. October 2026, 08:26 by abadx
Lower half of 2 stars for me. Great solving path
on 18. October 2026, 17:26 by Snookerfan
Very nice, thanks!
on 5. October 2026, 08:25 by EL Buderino
Highly recommended!
Very nice and approachable puzzle.
on 28. April 2026, 19:59 by Prince Joffrey
Very elegant, thanks for setting
on 28. April 2026, 18:52 by RedBarchetta
Elegant design with beautiful logic. Thanks for sharing!
on 28. April 2026, 18:43 by Draxie
Fun!fun!fun!
on 28. April 2026, 17:46 by KMD
Lovely lunch break puzzle.
on 28. April 2026, 15:22 by Franjo
Thank you very much for creating and sharing this lovely puzzle.
on 28. April 2026, 12:03 by Snaques
Very fun puzzle. Interestingly I found the first half of the puzzle much easier than the latter one. I was ready to call it 11*, but the 2* seems more accurate in the end.
on 28. April 2026, 02:38 by ViKingPrime
That's so James.
on 27. April 2026, 22:51 by Myxo
Lovely!
on 27. April 2026, 20:28 by sujoyku
Wonderful puzzle! Thank you, jwsinclair!
