This is an amazing movie. A thriller about how Tetris became great. The game
had already been circulating at ETH Zuerich before it officially came out. I
definitely played it on my Atari ST around 1987. This had been a time, when one
would also hex-edit the games to change dialogs for example and of course to bypass
copy protection. Mathematically, Tetris is interesting in the context of the
combinatorial problem to count lattice animals. There are 7 different tetrominos
if one does not allow reflections. I had been fascinated by them also because of
puzzles putting these 7 into a rectangle and programmed even an Apple II computer
to find all solutions of a given puzzle
(motivated by Ralph Ehrismann
one of the other Schweizer Jugend Forscht participants in 1981.)
The problem of finding the number of polyominos of size n is unknown.
The number P(n) grows between 3.72^n and 4.65^n
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