My cell phone came with a demo of Tetris, so I invented this fun challenge to avoid being tempted to buy the full game.  I certainly have not gotten bored of it yet, but it ain't an easy challenge.

Object of the game:
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You win the challenge if you score five lines as follows: 4 lines at once (a tetris) followed by one line


Rules:
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You are allowed to drop a maximum of 14 pieces
If you hold even one tetris piece, you are only allowed to drop a maximum of 13 pieces.  The only exception is if your 14th piece is held, in which case you may drop ONE more piece (making a maximum of 14 dropped)