Polymer T-Spins

Polymer T-Spins are setups for a T-Spin Double that uses kicks other than normal T-Spin Doubles and T-Spin Triples and kicks the T two rows downwards. These setups are considered ineffective in most cases, but still sometimes used to fix misdrops or complicated terrains.

Iso-TSD
An Iso-TSD is built by making a shape that looks like a T-Spin Triple but the overhang is placed on the other side.


 * Compulsory: the overhang for the Iso-TSD must be at least 3 columns long and the 2 rows-wide space between the overhang and the T-Spin Double must also be at least 3 columns long.

Some examples on how to make an Iso-TSD. The fifth example is not recomended because it wastes a T tetrimino; a better way to deal with that field is to use Kaslideoscope.

The most efficient way to cover the overhang after doing an Iso-TSD is by spinning a J into the leftover. One could also fix it by making a Donation T-Spin if the oppurtunity arises. A T-Spin Triple followup is used in the first example.

One could also make a structure similar to Bennxt Prop to deal with the overhang.

Iso T-spin Triple (TrIso)

This kind of TST is rarely used. It can only be done on games which have 180° rotations and SRS 180° kicks, like Tetr.io (but not Jstris). It was first showcased by OctoCallie during the Garbo Gamble Cup tournament as a different continuation of the DT Cannon.[1] Yackspin is an opener that uses this technique.

Neo-TSD
A Neo-TSD is made by making an overhang on one column shifted from the T-Spin Double. On some games, this would be recognized as a T-Spin Mini Double instead and does not send many garbage lines.


 * Compulsory: the overhang for the Neo-TSD must be at least 2 columns long and the 2 rows-wide space between the overhang and the T-Spin Double must also be at least 2 columns long.

Some examples on how to make a Neo-TSD. The fifth example is not recomended because it, wastes a T tetrimino; a better way to deal with that field is to make a T-Spin Triple.

By dropping either I or L, one might convert a Neo-TSD into a T-Spin Triple with an irregular overhang. Afterwards, use an I or L to clean up.

The most efficient way to cover the overhang after doing Neo-TSD, familar to how it is done with Iso-TSD, is by spinning a J into the leftover. One could also fix it by making a Donation T-Spin if the oppurtunity arises. A Company Train followup is used on the first example.

One could also make a Pseudo-Imperial Cross out of the overhang which could be then continued into a T-Spin Triple.

Fin-TSD
A Fin-TSD is made by putting an overhang above the T-Spin Double. This one is considered to be the most effective and efficient way to make a Polymer T-Spin out of the three due to it being easier to spot the opportunity on doing so and has the most reliable continuations.


 * Compulsory: the overhang for the Fin-TSD must be at least 2 columns long and the 2 rows wide space between the overhang and the T-Spin Double must be at least 3 columns long.

Some examples on how to make a Fin-TSD. The fifth diagram is not recomended because it wastes a T tetrimino; a better way to deal with that field, is to make a T-Spin Triple.

The most efficient way to cover the overhang after doing a Fin-TSD is by spinning a Z into the leftover. One could also fix it by making a Donation T-Spin if the oppurtunity arises. A Cut copy followup is used on the first example.


 * A possible continuation without spinning a Z is by making a Cut copy.


 * Another way is to make an Impeldown for three T-Spin Doubles. This uses the same concept as WolfMoon Cannon.


 * On rare occasions, one might make a DT Cannon-like setup which results in a May setup afterwards.


 * If the overhang is one column longer, then one could make a T-Spin Triple overhang first and then spin a Z.

Trehalose
Trehalose is a Fin-TSD → Neo-TSD Polymer T-Spin, discovered by TCM-β.

Empty Field Setups
Empty Field Openings, created by the player Larrytetris.

Midgame Opportunities
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The Polymer (Trehalose) shape. At frame 3 is a Fin-TSD followed by a normal TSD (because the step is too far for Kaidan to work). It is a Fin-TSD at frame 11, followed by a Polymer (Fin-TSD + Neo-TSD combo, i.e. Trehalose). The fumen was made by Larrytetris.

Kojibiose
Kojibiose is a Fin-TSD → TST Polymer T-Spin discovered by TCM-β.

Ajanba Signature
The Ajanba Signature is a Fin-TSD → Neo-TSD → Neo-TSD Polymer T-Spin, discovered by Ajanba. (fumen).

Iso-Trehalose
The Iso-Trehalose is a Iso-TSD → Neo-TSD Polymer T-Spin Double.

Yogsothoth
Yogsothoth is a Polymer T-Spin cut by a T-Spin Double. This could be applied to Fin-TSD, Neo-TSD or Iso-TSD.

Fin-variant
This is a Fin-TSD cut by a T-Spin Double that looks similar to Double Triple Cannon 2.

If the overhang of this variant is only one column long, this could be easily transformed into a DT Cannon 2.

Below are some structures similar to the normal Fin-variant. The one that looks like a DT Cannon is used lot of times by player Amemiya Taiyou. The one that looks like a BT Cannon is just Amemiya's Yogsothoth with the first T-Spin Double shifted one column.

Just like the normal Fin-variant, the variations above could be easily transformed to the setups those are similar to respectively if the overhang is only one column long.

Neo-variant
This is a Neo-TSD cut by a T-Spin Double that looks similar to DT Cannon 2.

Below are some structures similar to the normal Neo-variant. They look similar to DT Cannon and BT Cannon, respectively.

Iso-variant
This is a Iso-TSD cut by a T-Spin Double that looks similar to DT Cannon 2.

by translocating the overhang of this variant is on the other side of the structure, this could be easily transformed into a DT Cannon 2.

Below are some structures similar to the normal Iso-variant. They look similar to DT Cannon and BT Cannon, respectively.

Just like the normal Fin-variant, the variations above could be easily transformed in to the setups those are similar to respectively if the overhang is on the other side of the structure.

FinT Cannon
FinT Cannon is a setup that starts with a Fin-TSD to TST.

WolfMoon Cannon
WolfMoon Cannon is a Fin-TSD → Impeldown → Perfect Clear setup made by player WolfMoon.

Godspin
Godspin is a Fin-TSD → Neo-TSD → TST setup. This setup was made as a joke and is mostly ineffective during battles.

Godless-spin
Godless-spin is discovered by player cosin307, this is a Fin-TSD → Iso-TSD → Neo-TSD → TST setup. This setup was also made as a joke and is also mostly ineffective during battles.

MD-PC
MD-PC is a Neo-TSD/Fin-TSD → Perfect Clear setup discovered by player Octupus Tea.

External Sites

 * video by Larrytetris on making only Polymer T-Spin in a competitive match.
 * presentation by Malady on T-Spin.
 * page on FOUR about Polymer T-Spins