US Coin Puzzle

Make a chain of matching coins to exchange them into a higher coin.
- 1¢ x 5 = 5¢
- 5¢ x 5 = 25¢
- 25¢ x 4 = $1
- $1 x 5 = $5
$5 will disappear soon after it is made. Then you will get bonus score.
Special coin can be chained from any coins. However, the special coin cannot be selected at the first.
Bottle cap cannot be chained to any coin. It can be dropped down from the bottom of the field.
Game is over if no coins which can be exchanged.

Rules