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One Bigger Another*

Coin Puzzles

by Peter Grabarchuk

One Bigger Another by Peter Grabarchuk
 
 
Six coins form two right isosceles triangles -- three silver (lighter ones) make a smaller triangle, while three gold (darker ones) make a bigger one. The goal is to rearrange coins into another two right isosceles triangles so that now the three silver coins make a bigger triangle, while the three gold coins make a smaller one.

Move one coin at a time so that in its new position it touches at least two other coins from the unmoved group, except the case when this coin (marked as @) makes a straight line triad, like O@O. Achieve the goal in the fewest single moves.
 
*) Puzzle concept: Copyright 2009 Peter Grabarchuk. All Rights Reserved.
 
Last Updated: October 20, 2009
Posted: May 7, 2009
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