4 ms·

If you only get z shapes (with the same orientation). Is it then possible to avoid gaps? This is not clear to me at all.

by Jaxan 9y ago

__s 9y ago
You can go infinite if only supplied Ss. You'll have intermediate holes which will be filled in after the above row is cleared
- Jaxan 9y ago
  Ah yes, of course!
tosh 9y ago
Independently of that in Tetris the pieces (tetrominoes) are drawn from a bag: http://tetris.wikia.com/wiki/Random_Generator http://tetris.wikia.com/wiki/Random_Generator
- pdpi 9y ago
  Only in some versions. E.g. Puyo Puyo Tetris on the Nintendo Switch (to quote the most recent commercially-available Tetris I can think of) doesn't use that randomiser. I may or may not have played a few very poor games before I caught on to what was going on...
  - Lewton 9y ago
    Puyo Puyo Tetris draws from a bag of 2 sets of tetriminos, so every 14 pieces you'll have gotten two of each, afaik Also you'll never get three of the same piece in a row* *almost 100 % sure of this Haven't happened to me in a game yet and my rating is around 4480
mamon 9y ago
But are those pieces selected at random or not? Probability of getting even 10 z shapes in row is comparable to probability of winning a lottery (2.01599×10^-8, if I got Wolphram Alpha query right)
- amptorn 9y ago
  For the purposes of finding a "winning strategy" we have to have a solution for every piece sequence, regardless of probability.
  - deleted 9y ago
    [deleted]
taneq 9y ago
If you only get Z-shapes (of the same orientation) forever, then no. The game's not winnable. Proving the least favourable distribution of z-shapes to other shapes which would allow a game to continue indefinitely would be really interesting. :)
- amptorn 9y ago
  In fact you can just line five of the Z shapes up along the bottom, over and over again. This technique works indefinitely. Now, if there's an occasional S shape thrown into the mix, you have a problem.
  - dwohnitmok 9y ago
    As additional clarification if you align the piece upward to look like this then you're fine: # ## # You'll end up with # # # # # ########## # # # # # which becomes # # # # # # # # # # which you can just repeat over and over again forever (if your variant of Tetris includes gravity even this collapse to nothing).

If you only get z shapes (with the same orientation). Is it then possible to avoid gaps? This is not clear to me at all.

by Jaxan 9y ago

If you only get z shapes (with the same orientation). Is it then possible to avoid gaps? This is not clear to me at all.

__s 9y ago

You can go infinite if only supplied Ss. You'll have intermediate holes which will be filled in after the above row is cleared

Jaxan 9y ago
Ah yes, of course!

tosh 9y ago

Independently of that in Tetris the pieces (tetrominoes) are drawn from a bag: http://tetris.wikia.com/wiki/Random_Generator http://tetris.wikia.com/wiki/Random_Generator

pdpi 9y ago
Only in some versions. E.g. Puyo Puyo Tetris on the Nintendo Switch (to quote the most recent commercially-available Tetris I can think of) doesn't use that randomiser. I may or may not have played a few very poor games before I caught on to what was going on...
- Lewton 9y ago
  Puyo Puyo Tetris draws from a bag of 2 sets of tetriminos, so every 14 pieces you'll have gotten two of each, afaik Also you'll never get three of the same piece in a row* *almost 100 % sure of this Haven't happened to me in a game yet and my rating is around 4480

mamon 9y ago

But are those pieces selected at random or not? Probability of getting even 10 z shapes in row is comparable to probability of winning a lottery (2.01599×10^-8, if I got Wolphram Alpha query right)

amptorn 9y ago
For the purposes of finding a "winning strategy" we have to have a solution for every piece sequence, regardless of probability.
- deleted 9y ago
  [deleted]

taneq 9y ago

If you only get Z-shapes (of the same orientation) forever, then no. The game's not winnable. Proving the least favourable distribution of z-shapes to other shapes which would allow a game to continue indefinitely would be really interesting. :)

amptorn 9y ago
In fact you can just line five of the Z shapes up along the bottom, over and over again. This technique works indefinitely. Now, if there's an occasional S shape thrown into the mix, you have a problem.
- dwohnitmok 9y ago
  As additional clarification if you align the piece upward to look like this then you're fine: # ## # You'll end up with # # # # # ########## # # # # # which becomes # # # # # # # # # # which you can just repeat over and over again forever (if your variant of Tetris includes gravity even this collapse to nothing).