This Applet was written by Jos van Uden
Each guest at this camp site sleeps in a tent by a tree. The tent is positioned directly over, under, or beside the tree, but not diagonally to it. No two tents appear on adjoining sites, not even diagonally. (The positions of the other campers' trees don't matter.) The other day the camp site was fully booked. The figures outside the diagram indicate the number of tents that could be found in each row or column. Locate the sites of all the tents. One tent has already been placed for you.
