Re: [MLUG - DISCUSSION] real experts are just different from the rest of us.

[Mike Miller <EMAIL:PROTECTED>]

On Sun, 9 Sep 2007, Mike Miller wrote:

> > http://www.youtube.com/watch?v=jwC544Z37qo
>
> I agree with what you say about the violin.  Playing Paganini's hardest 
> pieces perfectly, or Rachmaninov on piano, is really much more 
> impressive than this for several reasons.  Playing Tetris with the 
> version of the game he was using is very much like sight reading music 
> fairly quickly.

Here's my analysis of how he does it:  The tetraminos can be dropped into 
any of 10 columns, but depending on the piece and orientation it could be 
a few fewer than that.  Some pieces have 4 possible orientations, some 2 
and some only one.

Equal width font needed:

<pre>

X X X   Or  X X X      four orientations each with either 8 or 9 columns
X               X      per orientation.  Total:  2 * (2*8 + 2*9) = 68


X X     Or    X X      two orientations each with either 8 or 9 columns
  X X       X X        per orientation.  Total:  2 * (8 + 9) = 34


  X                    four orientations with either 8 or 9 columns per
X X X                  orientation.  Total: 2*8 + 2*9 = 34


X X X X                two orientations, either 7 or 10 columns.
                       Total: 7 + 10 = 17

X X                    one orientation with 9 columns.  Total = 9
X X

</pre>

Thus, I see a total of 162 possible "normal" moves.  In addition to this 
there are tricks where the piece can be slid sideways after coming down or 
it can be twisted into a position that is physically impossible but is 
allowed by the software.

This is a little easier than it sounds because the normal moves consist of 
19 orientations for pieces followed by dropping into some column:  So the 
job has two parts to it.  Reading music is different in that the note is 
given to the reader, but in tetris the player must decide which move to 
use based on the pattern of fallen tetraminos.  So I would say that it's a 
bit more like jazz improvising.

Mike

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