Do you like the new ‘Hint system’?

This series is almost coming to an end, so the question here is: How do you rate the new ‘Hint system’, officially introduced with Contest # 152. Should we keep it this way or not?

Please give your opinion in the comments of this post.



Contest #159 answer: Alumina waste disaster, Ajka, Hungary

This one was hardly to be missed: This is the waste storage of the Timföldgyár Alumina plant in Ajka, Hungary that broke loose.


As a result the nearby towns of Kolontár and Devecser were flooded with a red toxic mud.



Nasa Earth Observatory has some recent satellite pictures on the site that show the extent of the spill.

A lot of good answers from:

  • hhgygy
  • Michael Kennedy
  • Taliesin
  • Stephen Hope
  • Dennis S.
  • LawnBoy
  • Paul Franson
  • Milosh, Serbia
  • José Miguel Díaz
  • Javier Abadia
  • lardarz
  • Carvas, Portugal
  • Sarah G
  • David Kozina
  • Marlowe D
  • ACG
  • Neil
  • Willem
  • Andy McConnell
  • Andy M, USA
  • alyca
  • 009_009
  • ewen
  • Sanghoon Han
  • Steve Jaycocks
  • Camargo, California
  • Max_Power


  • Ashwini Agrawal
  • Pascal Gilbraith
  • Michael T
  • Andy Geoghegan
  • Josh Muehe