Development of the elephant-trap idea. We put a broken elephant-trap in the desert. There will always be some elephant that will find a way to get captured in even a broken elephant-trap. Offered by Eugene A. Kuznetsov smith@lab.sun.mcst.ru

Build a cage around the whole desert. The problem is solved upon completion of fence. Offered by Eugene A. Kuznetsov smith@lab.sun.mcst.ru

Special thanks to Yan Pritzker, yan@airvertise.com for the help in methods translation.