Logic Masters Deutschland e.V.

Eight Xs (XV sudoku)

(Eingestellt am 19. November 2020, 01:00 Uhr von Lisztes)


Normal Sudoku rules apply. Each row, column, and 3x3 box contains each number from 1 to 9 exactly once.

All orthogonally adjacent cells with the sum of 5 are marked with a V, and with the sum of 10 are marked with an X. This is also a negative constraint (where there is no V or X between the cells, the sum of the 2 cells is not 5 or 10)!

Killer Sudoku rules apply. The sum of all numbers in a cage (marked with dashed lines) must match the small number printed in its corner. No number appears more than once in a cage.

The puzzle is also available online.

Lösungscode: Row 9 and Column 8

Zuletzt geändert am 20. November 2020, 13:37 Uhr

Gelöst von Aquashockz, tenaliraman, zorant, rimodech, NikolaZ, PrimeWeasel, Quarterthru, Ragna, Statistica, soroush, Joseph nehme
Komplette Liste


am 26. November 2020, 09:09 Uhr von Statistica
Very nice and very hard. I liked it!

am 25. November 2020, 16:27 Uhr von PrimeWeasel
I can see the logic with the cages after I'd finished it, but not during the solve. Retracing and changing all the X's and V's to make it fit afterwards wasn't particularly fun for me, but I might just be too frustrated for spending too much time on it.

am 25. November 2020, 10:55 Uhr von Lisztes
@Ragna Don't be sorry, I admit, it's not easy, but you don't have to use bifurcation, to solve it, I promise.

am 25. November 2020, 01:12 Uhr von Ragna
Sorry, I cannot find the intrance. So I have T&E, many bifurcations. Not very amusing. Not smooth.
And as I see, only 5 persons could solve it since a week. I'll give up. Sorry :-(

am 20. November 2020, 13:37 Uhr von Lisztes
Changing the difficulty level from average to hard.

Apparently it is not as easy as I thought.

am 19. November 2020, 19:49 Uhr von Aquashockz
Yes he didnt miss anything. Beautiful logic to this puzzle! Thank you for creating and sharing your puzzle!

Zuletzt geändert am 19. November 2020, 21:43 Uhr

am 19. November 2020, 19:34 Uhr von PrimeWeasel
Are you sure you're not missing an X or V?

~dammit what am I missing

Gelöst:11 mal
Beobachtet:1 mal


Lösung abgeben