Sudoku Variants Series (319) - Star Battle Sandwich
(Published on 5. May 2021, 00:00 by Richard)
Star Battle Sandwich
Inspiration for this type comes from Osh Tirola.
Solve online in F-Puzzles (Thanks to fuxia!)
Apply classic sudoku rules.
Designate in each row, column and 3x3 block two digits as star, where cells with stars can not touch each other, not even diagonally. Clues on the left and above the grid indicate the sum of the two stars in the corresponding row or column. Clues on the right and below the grid indicate the sum of the digits placed between the two stars in the corresponding row or column.
or Penpa+. (Thanks to Henry!)
Solution code: Row 6, followed by column 4.
Comments
on 3. January 2026, 09:20 by Tws
Placing the stars was no problem - but then - it took long time to find always the next keyhole!
on 28. December 2025, 06:33 by Phase Queen Rachel
Figuring out the stars was the easy part, everything after was so challenging, but I eventually solved it.
I really like star battles and sandwich sudokus so combining them is super fun!
on 7. December 2025, 16:33 by Franjo
MUCH harder than the calendar-puzzle! Thank you very much for creating and sharing this beautiful puzzle and leading me to here.
on 7. December 2025, 14:23 by Klausku
That was hard but very satisfying.
https://sudokupad.app/6eh7lg7qxl
on 11. March 2025, 17:30 by sisk0
Sudokupad link:
https://sudokupad.app/9qsny3ax31
on 4. September 2022, 07:48 by Richard
Added tag for online solving.
on 5. December 2021, 11:40 by ffricke
Das Rätsel hier hat mir außerordentlich gut gefallen.
on 12. September 2021, 21:02 by pin7guin
Klasse Konstruktion! Ich habe nur zwei Anläufe gebraucht... ;-)
on 23. May 2021, 14:28 by Rollo
Once more a hard one, but without any guessing :-). Excellent!
on 16. May 2021, 13:20 by philb
Took me a while, but no bifurcation and no mistakes so it must have been a clear path through!
on 5. May 2021, 15:19 by Richard
Added a second link for online solving. Thanks Henry!
on 5. May 2021, 12:13 by marcmees
tight solution path. Great puzzle. thanks
on 5. May 2021, 07:49 by henrypijames
Penpa+: https://git.io/J3wAA
on 5. May 2021, 05:36 by Richard
Thanks fuxia! :-)
Thanks fuxia! ;-)
on 5. May 2021, 05:35 by Richard
Added the link for online solving.
on 5. May 2021, 05:28 by Richard
This puzzle might contain a step that is harder to spot in variants, but often occurs in classics. For those of you interested, I have written a few lines of the solving process in a hidden comment.
on 5. May 2021, 01:13 by fuxia
This whole series is really impressive, Richard!
Here's a link for online solving: https://f-puzzles.com/?id=yzrggwr4
