Logs for treenabene 

11-Aug-13
Not to hard 
 
24-Mar-13
an easy one 
 
23-Mar-13
Hint is useful 
 
Took ages. Hint helped in end 
 
07-Mar-13
Very tricky yes we went in circles 
 
 
03-Mar-13
Lovely day for a walk 
 
This took a bit of searching