8
(Published on 19. November 2020, 05:46 by Tom1i)
Killer/palindrome sudoku
*Variant rule in German: Die roten Quadrate summieren sich zu 105 und die 3 roten Zellen in Zeile 2 und die 3 roten Zellen in Zeile 8 summieren sich zu demselben Wert.
Link to puzzle in the Fox editor: PUZZLE
Ruleset:
- Standard: Normal sudoku rules apply.
- Standard killer: Cells inside a cage sum to the given total. Digits may not repeat.
- Standard palindrome: The set of cells along a gray line must read the same from both directions (for instance 1213121 is a palindrome).
- *Variant: The red cells sum to 105 and the 3 red cells in row 2 and the 3 red cells in row 8 sum to the same value.
*Variant rule in German: Die roten Quadrate summieren sich zu 105 und die 3 roten Zellen in Zeile 2 und die 3 roten Zellen in Zeile 8 summieren sich zu demselben Wert.
Link to puzzle in the Fox editor: PUZZLE
Have a nice day :)
Solution code: Column 1 followed by column 9 without spaces
Solved by cdwg2000, ThrowngNinja, dm_litv, Luigi, PetLov, adam001, zorant, NikolaZ, MavericksJD, amirbeirat, CaballeroOscuro, Selsted, samuella, ManuH, Statistica, abed hawila, ArchonE, Sky Ocean, CountSudokula, kishy72, spinard, Beard Master, WardBeullens, smckinley, Kabuki73, Ragna, SirWoezel, rimodech, skywalker, geronimo92, SKORP17, apwelho, mezkur7, finger, RadchenkoAleksandr
Comments
on 17. July 2024, 12:56 by mezkur7
Sudokupad: https://sudokupad.app/x2fccki0j9
Last changed on 19. November 2020, 11:02
on 19. November 2020, 10:17 by Luigi
Really impressive construction and solving path
* Thanks. As you can probably tell, I initially designed this as an XV puzzle (holes in 8 as XXV). I very badly wanted a negative constraint on 8 dominos and usage of Phistomefel's theorem to be necessary for the solve, but either that or a negative XV constraint made the puzzle too easy, whichever way I flipped the cells. Had to settle on an easy-ish idea.
@cdwg2000: Thanks.
on 19. November 2020, 06:21 by cdwg2000
easy and nice！
