Can you be sure to clear a line at Tetris?
Related: in the official specification of the game the pieces ("tetrominoes") are drawn from a bag to prevent the possibility of an unfavorable sequence of pieces that force you to lose the game.<p>IIRC early implementations of the game did not always behave like that.<p><a href="https://tetris.fandom.com/wiki/Tetris_Guideline" rel="nofollow">https://tetris.fandom.com/wiki/Tetris_Guideline</a><p>> You might have heard of the result that you can play forever with bag randomizer, Hold and 3 previews (a similar setup even works with 0 previews). However, the opposite is true, if you play with a randomizer that can generate all piece sequences (e.g. memoryless randomizer). In this article we will present a piece sequence that will top you out - no matter what you do.<p><a href="https://harddrop.com/wiki/A_deadly_piece_sequence" rel="nofollow">https://harddrop.com/wiki/A_deadly_piece_sequence</a><p><a href="https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.55.8562&rep=rep1&type=pdf" rel="nofollow">https://citeseerx.ist.psu.edu/viewdoc/download?doi=10.1.1.55...</a>