The Frog puzzle
There are 3 green frogs, 3 red frogs and 7 lily pads, the aim is to get the 3 green frogs and the 3 red frogs to swap places in as few moves as possible.
The Rules
The frogs can slide onto an empty lily pad or hop over one frog onto an empty lily pad. They can not hop or slide backwards. They can not share a lily pad. Only one frog can move at a time.
How many moves does it take to swap all the frogs? = AB
Complete the puzzle again with 4 green frogs, 4 red frogs and 9 lily pads, how many moves to swap all the frogs? = CD
The cache can be found here...N51 27.B (B+D) (A+C) W002 06. (B+C) (A+C+D) D
The Little Bridges series was started by Stanthews in 2009 to highlight small footbridges in remote parts of Wiltshire. Since then the series has been expanded by others all over the country and starting to spread fast, Damian from Winter Foxes has created and updates a list of cachers who has found 10 or more little bridges and can be found here, if you would like to add to the series, please contact Stan here and he will give you a number for your bridge, to qualify, the bridge must be a foot bridge too small for vehicles, please make sure your title exactly matches “Little Bridges # xx then name” including spaces so it will get picked up and added to Damian’s list.