Logic Masters Deutschland e.V.

Sudoku Variants Series (314) - Chess Pairs Sudoku

(Eingestellt am 31. März 2021, 00:00 Uhr von Richard)

Für dieses Sudoku-Varianten-Projekt habe ich geplant, jede Woche eine andere Sudokuvariante zu veröffentlichen. Ich werde sehen wie lange es dauert bis mir die Ideen ausgehen.

Chess Pairs Sudoku
Verwende die üblichen Sudoku-Regeln.
Zwei Käschen, die die gleiche Ziffer enthalten, bilden ein "Schachpaar", wenn sie durch einen Springer- oder Läuferzug voneinander entfernt sind. Jedes Kästchen muss Bestandteil mindestens eines Schachpaares sein.

Dieses Rätsel ist von Genomico inspiriert.

Lösungscode: Zeile 3, gefolgt von Zeile 9.

Zuletzt geändert -

Gelöst von Nairi, azalozni, Greg, cfop, cdwg2000, Genomico, Rollo, Senior, kimilsung, Puffke, Dandelo, henrypijames, ashwin, r45, Statistica, Jesper, rcg, panthchesh, risheek, saskia-daniela, NikolaZ, shudd, ... Eisbär, AnnaTh, kopfball, cornuto, ParaNox, ffricke, ildiko, Marian, Accingite, Nick Smirnov, Danekiller, sandmoppe, Simpall1, ksoekarjo, Mark Sweep, sojaboon, snowyegret, Snowhare, bbutrosghali
Komplette Liste


am 2. April 2021, 13:58 Uhr von Ryx
@Dandelo - Thank you, I did not know that about hidden comments. And I am switching my position and agree with you. It kept me up this morning thinking about this topic.

For this puzzle, I found "a solution", but as it did not fulfill all the constraints, I should consider that itself a constraint and fall back, regroup and find "the solution".

Thanks to Richard for providing me a challenging puzzle and a learning opportunity, in several aspects.

am 2. April 2021, 09:28 Uhr von Dandelo
The hidden comment is viewable for the author and those, who have already solved it.

It is (by far) not the only puzzle in the portal, where the solution code is chosen bad in this respect. IMO it is not that important. In a championship ok, but here the fun is to solve the puzzle and not to find the solution code.

Zuletzt geändert am 2. April 2021, 15:20 Uhr

am 2. April 2021, 04:09 Uhr von Ryx
@Dandelo - I get what you are saying, but agree with henrypijames, that the solution code should require the correct puzzle configuration.

And how do you guys see my hidden comment?

And thanks to you both, I see where I went wrong. In my 3rd or 4th attempt at this puzzle (this time coloring all the satisfied cells) I placed a 5 where it was still ambiguous (thought it could only be satisfied by one chess move, where it could have been either of two moves). From there, the rest "solved", but I was left with one digit at the end that could not find a chess pair :-(

Zuletzt geändert am 1. April 2021, 21:50 Uhr

am 1. April 2021, 21:49 Uhr von Dandelo
If you construct (or test) with penpa+, you have the option to save the undo-history, which is helpful anyway, but also stores the construction or solution path, e.g. for such purposes.

am 1. April 2021, 20:46 Uhr von filuta
thank you for the puzzle, very nice concept

am 31. März 2021, 20:48 Uhr von Richard
I test solved this one a few weeks ago, but didn't make notes which row/column was last in the solve. So when I installed this puzzle in the portal, I based the code on my own scribblings, but didn't resolve it to have the best feeling regarding the code...

am 31. März 2021, 17:32 Uhr von glum_hippo
This certainly requires some very sharp-eyed checking, but I had fun!

Zuletzt geändert am 31. März 2021, 15:36 Uhr

am 31. März 2021, 15:34 Uhr von henrypijames
@Ryx: Your "solution" is indeed incorrect - in boxes 5, 7 and 8.

But this does show there should be a better choice for the solution code.

am 31. März 2021, 15:32 Uhr von Dandelo
@Ryx: But then this is not the solution, since the rule is not fulfilled...

am 31. März 2021, 14:24 Uhr von Genomico
Beautiful construction and fun to solve!

am 31. März 2021, 05:24 Uhr von henrypijames
Penpa+: https://git.io/JYEp6

am 31. März 2021, 03:37 Uhr von Ryx
F-puzzles link to solve:


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