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Questions tagged [tetris]

For questions about the game of Tetris, or puzzles which involve or relate to this game. Not for general puzzles involving tetrominoes, which may be tagged [polyomino] instead.

47 votes
1 answer
4k views

Which country flags can you make in Tetris?

Your friend is playing Tetris. In her version of the game, the pieces use the standard colors and can drop in any possible order without restrictions. In the order shown below, the colors are light ...
noedne's user avatar
  • 15.4k
21 votes
2 answers
2k views

A Tetris puzzle made with love

I love designing perfect clear puzzles for my dear friend who loves Tetris. Here's a lovely puzzle I crafted today. Original Puzzle (Warm-Up) Starting with this field, place this exact sequence of ...
noedne's user avatar
  • 15.4k
3 votes
1 answer
1k views

Probability of a successful DT Cannon

In multiplayer Tetris, there are a number of opening setups that let you send powerful attacks very quickly. One popular opening is the DT Cannon, which allows the player to very quickly send a T-Spin ...
thesilican's user avatar
  • 2,506
11 votes
2 answers
1k views

Three Tetris Mini-Puzzles

Every man dog and millipede on the planet knows there are seven possible pieces in Tetris. In each of the following puzzles Joe Bloggs wants to achieve something specific within the first seven moves,...
happystar's user avatar
  • 7,770
13 votes
2 answers
426 views

Let's Play Tetris!

Fill the whole grid with Tetrominos. Every cell must be part of exactly one Tetromino. Tetrominos can be rotated as necessary. The colored clue cells must be part of the indicated type of ...
Zilvarro's user avatar
  • 683
10 votes
1 answer
474 views

Is Oh Tetris Oh! always a draw?

Alice and Bob were playing Oh-Tetris-Oh!, when they decided that every game must be a draw (played intelligently). Can you prove this? (Oh yes, the rules: A $10\times10$ grid, you can pick any ...
JMP's user avatar
  • 35.6k
18 votes
3 answers
2k views

BOOM! Perfect Clear for Mr. T

In Tetris, Mr. T loves performing Perfect Clears, when a piece clears all lines in the playing field. As you might guess, when it comes to tetriminos, he has a personal favorite: the undeniably cutest ...
noedne's user avatar
  • 15.4k
11 votes
2 answers
600 views

BOOM! All Clear for Mr. T

In Tetris 99, Mr. T loves performing All Clears, which happen when a piece clears all lines in the playing field. Being a gentleman, he also tries to minimize the total damage he sends to his ...
noedne's user avatar
  • 15.4k
12 votes
3 answers
773 views

A Floating Row - Tetris Puzzle

It is possible to produce the following arrangement in a standard game of Tetris (if you happen to get the right order of pieces and you place them appropriately). Notice that all of the pieces are ...
Riley's user avatar
  • 14.5k
5 votes
1 answer
1k views

Building a Tetromino Tower [duplicate]

So, I just bought a Tetris Light like this one. With all 7 unique tetrominos, I can build a tower whatever I like and then turning them on at night to give me a good sleep, mm hm. (What a geek!) I ...
athin's user avatar
  • 34.3k
6 votes
3 answers
758 views

Is it possible to make a game of Tetris un-winnable?

Here's a puzzle I've been thinking about for a while, but still don't have an answer to. Lets say a friend is playing Tetris, but instead of the computer picking pieces at random you get to choose ...
Wheat Wizard's user avatar
  • 1,353
48 votes
3 answers
3k views

Tiling with T-tetrominos in gravity

The goal is to tile all the white squares using T-tetrominos when there is gravity pulling the tetrominos downwards like regular tetris. The black squares are void and the ground is just below the ...
Alexandros's user avatar
  • 1,137
7 votes
2 answers
523 views

Fill up a tetris field where bordering tiles have different colors

Is it possible to completely fill the infinite tetris field $\mathbb Z^2$ with tetrominoes such that no tetromino borders another one of the same type? Assume that two tetromiones border each other ...
GOTO 0's user avatar
  • 13.5k
268 votes
1 answer
31k views

Is this Tetris puzzle solvable?

As a birthday present last year, I received some fridge magnets. They didn't come as a puzzle, so I don't know if they have a solution, but I made a puzzle out of them anyway. The magnets are ...
James Webster's user avatar