Place the digits from 1 tot 9 in every row, column and 3x3-block. No cell that is a knight-step (Chess) away will contain the same digit.
Solution code: Row 1, followed by row 9.
on 8. June 2016, 05:16 by ohm0123
a little hard. but good. Thank Richard.
on 14. October 2014, 19:28 by Richard
@marcmees: that sounds a bit too much, but it will be easily more than 100. ;-)
on 14. October 2014, 15:47 by marcmees
nice series ... 999 more to come ???
on 14. October 2014, 14:41 by pin7guin
Prima! Ich hatte um Mitternacht geguckt und war ein bisschen besorgt... ;-)
on 14. October 2014, 10:20 by flaemmchen
Besonders schöne Variante :))
on 14. October 2014, 09:45 by AnnaTh
Richards Rätsel sind immer auch kleine ästhetische Meisterwerke :-)
on 14. October 2014, 08:33 by Statistica
Nicht nur optisch ein Hochgenuss! Danke!
on 14. October 2014, 08:17 by r45
on 14. October 2014, 06:34 by Richard
I was so busy with watching what happened behind the screens with Pento Parade that I completely forgot to activate this puzzle. So it's a bit later than expected. :-)