|Dwarves with hats|
Thanks AMC for this riddle
A room is filled by dwarves with coloured hats.
Some hats are blue and the other are green.
The dwarves can't communicate and can't see the colour of their own hat (but they see the colour of the other hats).
They have to stand against one wall of the room ; all dwarves with blue hats must be on a side and the dwarves with green hats on the other side (all dwarves will stand against the same wall).
How can they do?
Congratulations Bashkoutou4070 on his solution of the 01/27/06 but don't look at it, it's always better to find oneself...
If you want to see the (false) solutions which were sent to me.