Country Dictionary

T spin double
It's a strategy used in Tetris, which can send 4 lines, equivalent to doing a tetris, but is easier to set up.

"Yakine is no doubt the t spin god"
"Yea! His tsd are so goood"

T spin triple
It's another form of t spin which clears three lines, sending your opponent 6 lines garbage.

"wow, yakine is not only amazing at tsd, but also at tst"

Perfect clear, a strategy in tetris which one player clears all the blocks on the board without any left. Usually seen in PCO (perfect clear opening), sometimes followed up by a DPC, or PCO spam.

"noooo!!! his pc ruined my 4w!!"

Super T spin double
A stsd is a t spin setup which can result to two tsd

"wow, bennxt did another stsd setup!"

In tetris, a perfect clear is, just as the name says, when a player clears all the blocks on the board witout leaving any behind.

"what is the best counter to 4 wide?"
"i guess perfect clear"

A dt cannon is an opener used in tetris, which can result into a tsd followed by a tst. Sometimes, you can choose to use a c spin continuation, which can result into another tst followed by a tsd.

"a lot of pros use dt cannon nowadays"
"not really in tetr.io tho"

A bt cannon is an opener/strategy in tetris, which is a tsd followed up by a tst, then a c spin, then possibly a perfect clear end. While not as useful in versus games, it is definitely op in blitz/ultra mode

"i got 200k+ score in tetr.io blitz just by doing bt cannon"