Doubler XL
(Published on 6. September 2023, 00:07 by thoughtbyte)
Normal Sudoku rules apply. Additionally:
Doublers: nine cells (one in each row/column/box) are doublers, and count as double their value. Each digit appears in exactly one doubler.
X-sums: a clue outside the grid is the sum of the first X cells in the corresponding row/column, where X is the value in the cell nearest to the clue. The value of X cannot be greater than 9.
Evens: cells with grey squares contain even digits; they cannot contain doubled odd digits.
F-Puzzles: https://f-puzzles.com/?id=272xy7mj
CTC: http://tinyurl.com/doublerxl
Solution code: Row 6.
Comments
on 20. November 2023, 10:55 by Tony
Very nice puzzle. Every step is logical and easy-to-see.
on 28. September 2023, 19:36 by Snookerfan
So glad I gave this great puzzle a second chance after breaking it the first time a few weeks ago. I found my silly mistake quickly today. Thank you!
on 27. September 2023, 19:16 by Silverstep
quite approachable. a nice introduction to doublers and X-sums.
on 9. September 2023, 14:53 by Mouski
Hard and beautiful. Congrats.
on 8. September 2023, 20:08 by alanb
I spent some time wondering if "the value of X cannot be greater than 9" means to sum all 9 digits if X exceeds 9 OR if a number cannot be placed in X that exceeds a value of 9. Oh well, I solved it anyway :) beautiful puzzle!
on 6. September 2023, 22:56 by julien505
What an amazing puzzle! Loved how varied the logic was along the path.
on 6. September 2023, 18:31 by yttrio
Excellent puzzle! Quite tricky without being overwhelming, and lots of very satisfying deductions to make throughout!
on 6. September 2023, 14:48 by samuel1997
It is fabulous! Thank you!
on 6. September 2023, 11:15 by tonald
cool doublers
on 6. September 2023, 08:47 by marcmees
hard but fair. thanks
