Each of the digits 1-9 does appear twice in the darkblue marked cells.
The two grey figures are weights. The balance is at rest, so the two weights have the same mass. This mass is the sum of all eight digits in this figure.
Solution code: Row 9, followed by column 5
on 12. October 2011, 18:59 by Eisbär
@ RobertBe: Actually I just liked this colour :-) But you've got a point... next time I will be a bit more careful while picking a (lighter) colour!
on 12. October 2011, 11:08 by ibag
Ich habs mir diesmal verkniffen ... ;-)
on 11. October 2011, 22:45 by RobertBe
Very nice puzzle, one nitpick: the dark blue color of the Waage made it nearly impossible for me to read what I had written in the cells.... A whiter shade of pale,euh, a lighter shade of blue would be preferable next time.
on 3. October 2011, 13:34 by Saskia
Gern mehr Killer :)
@ Saskia: jedenfalls am 1.en November... :-)))
on 1. October 2011, 12:06 by ibag
Klasse Idee, das mit der Waage. Danke!