Can Tetris go forever?

Can Tetris go forever? Tetris uses seven colored blocks (a.k.a. “tetrominos”) that all fit together, so it seems that you can play the game forever and eventually win. However, when all of the tetrominos fit together, it spans eight tiles wide. The problem is that the well you must fill to make lines that disappear is actually 10 tiles wide.

Tetris uses seven colored blocks (a.k.a. “tetrominos”) that all fit together, so it seems that you can play the game forever and eventually win. However, when all of the tetrominos fit together, it spans eight tiles wide. The problem is that the well you must fill to make lines that disappear is actually 10 tiles wide.
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