For each of two 9x9 grids; place the digits 1 to 9 in every row, column and 3x3 standard block. The following three rules must be satisfied for both grids:
*** Cells connected with a chess-knight move could not contain same digits.
*** There exist no neighbouring cells with consecutive digits.
*** Two same numbers can not touch each other diagonally.
Besides grey painted cells form renban groups. These groups must hold consecutive digits, in any order.
Solution code: The marked row, followed by the marked column.
on 16. August 2021, 00:34 by zhergan
Tags and labels revision..
on 6. February 2014, 12:18 by Oliver Strauß
I have enjoyed the puzzle - not to difficutly.
on 13. May 2011, 08:24 by Luigi
Das ist wahr. Hier zählt wirklich einfach mal anfangen...
on 13. May 2011, 07:44 by miez
Hat man mal einen Anfang gefunden, läufts von ganz allein.
on 12. May 2011, 18:44 by ibag
Hast Du denn die ganze lange Anleitung gelesen? ;-)
on 12. May 2011, 18:42 by Luigi
Nur drei Sterne... ich suche immer noch nach der ersten Zahl! ;-))