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The Kaidan, or Stairs, T-Spin setup, discovered by [[Tetris DS]] player TCM-WC, is a [[Prophecy T-Spin Double| prophecy T-Spin Double]] method that takes advantage of a step formation beside an empty column. After an overhang is created, a Z tetromino is platformed over the empty column and used as a base for the T-Spin Double. After performing the T-Spin Double, the empty column should be open again. The Kaidan setup is especially effective in games that reward a Back-to-Back bonus.
{|
|<playfield>
..........
..........
GGGGG.....
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
</playfield>
|<playfield>
..........
.....OO...
GGGGGOO...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
</playfield>
|<playfield>
..........
.....OO...
GGGGGOO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.
</playfield>
|<playfield>
..........
.....OO...
GGGGGOO...
GGGGGGPPPZ
GGGGGGGPZZ
GGGGGGGGZ.
GGGGGGGGG.
</playfield>
|<playfield>
..........
..........
..........
.....OO...
GGGGGOO...
GGGGGGGGZ.
GGGGGGGGG.
</playfield>
|}
== General Tips ==
* Steps one to four are mandatory for the setup to work. The fourth step can often be incorporated through the tetromino used to create the overhang.
{|
|<playfield>
..........
..........
GGGGG4....
GGGGGG3...
GGGGGGG2..
GGGGGGGG1.
</playfield>
|<playfield>
..........
.....SS...
GGGGS4....
GGGGGG3...
GGGGGGG2..
GGGGGGGG1.
</playfield>
|}
<br>* Rows one and two do not have to be complete for the setup to function.
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G| | | | | }}
GGG....GGG
{{pfrow|G|G|G|G|G|G| | | | }}
GGGG...GGG
{{pfrow|G|G|G|G|G|G|G| | | }}
-2222..222
{{pfrow|G|G|G|G|G|G|G|G| | }}
-11111.111
{{pfrow|G|G|G|G|G|G|G|G|G| }}
</playfield>
{{pfend}}
|<playfield>
|{{pfstart}}
...L......
{{pfrow| | | | | | | | | | }}
.LLL......
{{pfrow| | | | | |O|O| | | }}
GGG...ZGGG
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGG.ZZGGG
{{pfrow|G|G|G|G|G|G| | | | }}
-2222Z.222
{{pfrow|G|G|G|G|G|G|G| | | }}
-11111.111
{{pfrow|G|G|G|G|G|G|G|G| | }}
</playfield>
{{pfrow|G|G|G|G|G|G|G|G|G| }}
|<playfield>
{{pfend}}
...L......
|{{pfstart}}
.LLL......
{{pfrow| | | | | | | | | | }}
GGGPPPZGGG
{{pfrow| | | | | |O|O| | | }}
GGGGPZZGGG
{{pfrow|G|G|G|G|G|O|O| | | }}
-2222Z.222
{{pfrow|G|G|G|G|G|G| | | |Z}}
-11111.111
{{pfrow|G|G|G|G|G|G|G| |Z|Z}}
</playfield>
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
|<playfield>
{{pfrow|G|G|G|G|G|G|G|G|G| }}
..........
{{pfend}}
..........
|{{pfstart}}
...L......
{{pfrow| | | | | | | | | | }}
.LLL......
{{pfrow| | | | | |O|O| | | }}
-2222Z.222
{{pfrow|G|G|G|G|G|O|O| | | }}
-11111.111
{{pfrow|G|G|G|G|G|G|P|P|P|Z}}
</playfield>
{{pfrow|G|G|G|G|G|G|G|P|Z|Z}}
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
{{pfrow|G|G|G|G|G|G|G|G|G| }}
{{pfend}}
|{{pfstart}}
{{pfrow| | | | | | | | | | }}
{{pfrow| | | | | | | | | | }}
{{pfrow| | | | | | | | | | }}
{{pfrow| | | | | |O|O| | | }}
{{pfrow|G|G|G|G|G|O|O| | | }}
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
{{pfrow|G|G|G|G|G|G|G|G|G| }}
{{pfend}}
|}
|}


=== Setting Up the Base ===
<br>* The overhang and base are interchangeable in order of placement.
==== Filling the Gap ====
{|
These situations don't crop up often during play and are generally less preferred than the line clear method. There are only three situations with each utilizing a different tetromino.
|<playfield>
.....OO...
.....OO...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
</playfield>
Overhang first
|<playfield>
.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.
</playfield>
Then base
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
..........
{{pfrow|G|G|G|G|G|G|G| | | }}
..........
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGG...Z
{{pfrow|G|G|G|G|G|G|G|G|I| }}
GGGGGGG.ZZ
{{pfrow|G|G|G|G|G|G|G|G|I| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|I| }}
GGGGGGGGG.
{{pfrow|G|G|G|G|G|G|G|G|I| }}
</playfield>
{{pfend}}
Base first
|<playfield>
.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.
</playfield>
Then overhang
|}
 
== Setting Up the Stairs ==
 
=== Filling the Body ===
{|
|<playfield>
..........
..........
GGGGGG....
GGGGGGS...
GGGGGGSS..
GGGGGGGSG.
</playfield>
S-1
|<playfield>
..........
..........
GGGGG-....
GGGGGZZ...
GGGGGGZZ..
GGGGGGGGG.
</playfield>
Z-1
|<playfield>
..........
..........
GGGGG-....
GGGGG-T...
GGGGGTTT..
GGGGGGGGG.
</playfield>
T-1
|}  
 
=== Filling the Bottom Gap ===
Although there are seven unique situations, they are uncommon during play and are generally less preferred than the line clear method.
{|
|<playfield>
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGOO.
GGGGGGGOO.
</playfield>
O-1
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGI.
GGGGGGGGI.
GGGGGGGGI.
GGGGGGGGI.
</playfield>
I-1
I-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|S| | }}
GGGGGGGGJ.
{{pfrow|G|G|G|G|G|G|G|S|S| }}
GGGGGGGGJ.
{{pfrow|G|G|G|G|G|G|G|G|S| }}
GGGGGGGJJ.
{{pfend}}
</playfield>
J-1
|}
{|
|<playfield>
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGS..
GGGGGGGSS.
GGGGGGGGS.
</playfield>
S-1
S-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
..........
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G|T| | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|T|T| }}
GGGGGGZZ..
{{pfrow|G|G|G|G|G|G|G|T|G| }}
GGGGGGGZZ.
{{pfend}}
</playfield>
Z-1
|<playfield>
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGT..
GGGGGGGTT.
GGGGGGGTG.
</playfield>
T-1
T-1
|<playfield>
..........
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGT..
GGGGGGTTT.
</playfield>
T-2
|}
|}


==== Line Clear ====
=== Line Clearing the Edge ===
Line clearing is the most versatile method to prepare the Kaidan base and is generally preferred and used more often than filling the gap. As opposed to filling the gap, line clearing provides five unique situations, often encountered when skimming, with three where alternate tetrominoes may be used. It is important to note the three interchangeable situations (O-1 and S-1, J-1 and L-1, J-2 and L-2) as they provide for more flexibility.
Line clearing is the most versatile method to prepare the Kaidan edge and is generally preferred and used more often than filling the gap. As opposed to the former, line clearing provides five unique situations, often encountered when skimming, with three where alternate tetrominoes may be used. It is important to note the three interchangeable situations (O-1 and S-1, J-1 and L-1, J-2 and L-2) as they provide for more flexibility.
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|O|O}}
GGGGGGGGOO
{{pfrow|G|G|G|G|G|G|G|G|O|O}}
GGGGGGGGOO
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
O-1
O-1
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|I| }}
GGGGGGGGI.
{{pfrow|G|G|G|G|G|G|G|G|I| }}
GGGGGGGGI.
{{pfrow|G|G|G|G|G|G|G|G|I| }}
GGGGGGGGI.
{{pfrow|G|G|G|G|G|G|G|G|I|G}}
GGGGGGGGIG
{{pfend}}
</playfield>
I-1
I-1
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|J|J}}
GGGGGGGGJJ
{{pfrow|G|G|G|G|G|G|G|G|J| }}
GGGGGGGGJ.
{{pfrow|G|G|G|G|G|G|G|G|J| }}
GGGGGGGGJ.
{{pfend}}
</playfield>
J-1
J-1
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|J| | }}
GGGGGGGJ..
{{pfrow|G|G|G|G|G|G|G|J|J|J}}
GGGGGGGJJJ
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
J-2
J-2
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|L| }}
GGGGGGGGL.
{{pfrow|G|G|G|G|G|G|G|G|L| }}
GGGGGGGGL.
{{pfrow|G|G|G|G|G|G|G|G|L|L}}
GGGGGGGGLL
{{pfend}}
</playfield>
L-1
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGLLL
GGGGGGGL..
GGGGGGGGG.
GGGGGGGGG.
</playfield>
L-2
|}
{|
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGGGS
</playfield>
S-1
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGT.
GGGGGGGGTT
GGGGGGGGTG
</playfield>
T-1
|}
 
There's actually another situation involving the Z tetromino which utlizes the alternative line clear Z base, but it's not recommended because the QTK alternative should be used instead.
{|
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG.Z
GGGGGGGGZZ
GGGGGGGGZG
</playfield>
Z-1
|}
 
=== Twist ===
{|
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGIIII.
GGGGGGGGG.
</playfield>
I-1
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGJJJ.
GGGGGGGGJ.
</playfield>
J-1
|}
{|
|<playfield>
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGL.
GGGGGGLLL.
</playfield>
L-1
L-1
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|L|L|L}}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|L| | }}
GGGGGGGLLL
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGLG.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
</playfield>
{{pfend}}
L-2
L-2
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|S| }}
GGGGGGGGSS
{{pfrow|G|G|G|G|G|G|G|G|S|S}}
GGGGGGGSS.
{{pfrow|G|G|G|G|G|G|G|G|G|S}}
GGGGGGGGG.
{{pfend}}
</playfield>
S-1
S-1
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|T| }}
GGGGGGGGT.
{{pfrow|G|G|G|G|G|G|G|G|T|T}}
GGGGGGGTTT
{{pfrow|G|G|G|G|G|G|G|G|T|G}}
GGGGGGGGG.
{{pfend}}
</playfield>
T-1
T-1
|}
|}


=== T-Spin ===
'''T-Spin Single'''
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|P| }}
GGGGGGGGP.
{{pfrow|G|G|G|G|G|G|G|P|P|P}}
GGGGGGGPPP
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|T| }}
GGGGGGGGT.
{{pfend}}
</playfield>
|}
|}


=== Creating The Overhang ===
== Creating The Overhang ==
The overhang that is set up in advance in Kaidan setups are based on the principles of the [[T-Spin Double Overhang Setups | T-Spin Double overhang]].
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
O-1
O-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | |I|I|I|I| | | }}
...IIII...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
I-1
I-1
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | |J| | | | | }}
....J.....
{{pfrow| | | | |J|J|J| | | }}
....JJJ...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
J-1
J-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |J|J| | | }}
.....JJ...
{{pfrow|G|G|G|G|G|J| | | | }}
GGGGGJ....
{{pfrow|G|G|G|G|G|J|G| | | }}
GGGGGJG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
J-2
J-2
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | |J| | | }}
......J...
{{pfrow| | | | | | |J| | | }}
......J...
{{pfrow|G|G|G|G|G|J|J| | | }}
GGGGGJJ...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
J-3
J-3
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | |J|J|J| | | }}
....JJJ...
{{pfrow|G|G|G|G|G|G|J| | | }}
GGGGGGJ...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
J-4
J-4
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | |L| | | }}
......L...
{{pfrow| | | | |L|L|L| | | }}
....LLL...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
L-1
L-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | |L|L|L| | | }}
....LLL...
{{pfrow|G|G|G|G|L|G| | | | }}
GGGGLG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
L-2
L-2
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |L| | | | }}
.....L....
{{pfrow| | | | | |L| | | | }}
.....L....
{{pfrow|G|G|G|G|G|L|L| | | }}
GGGGGLL...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
L-3
L-3
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |L|L| | | }}
.....LL...
{{pfrow|G|G|G|G|G|G|L| | | }}
GGGGGGL...
{{pfrow|G|G|G|G|G|G|L| | | }}
GGGGGGL...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
L-4
L-4
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|S|S| | | | }}
GGGGSS....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
S-1
S-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |S| | | | }}
.....S....
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|G|G|S| | | }}
GGGGGGS...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
S-2
S-2
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | |Z| | | }}
......Z...
{{pfrow| | | | | |Z|Z| | | }}
.....ZZ...
{{pfrow|G|G|G|G|G|Z| | | | }}
GGGGGZ....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Z-1
Z-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | |Z|Z| | | | }}
....ZZ....
{{pfrow|G|G|G|G|G|Z|Z| | | }}
GGGGGZZ...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Z-2
Z-2
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |T| | | | }}
.....T....
{{pfrow| | | | |T|T|T| | | }}
....TTT...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
T-1
T-1
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |T| | | | }}
.....T....
{{pfrow| | | | | |T|T| | | }}
.....TT...
{{pfrow|G|G|G|G|G|T| | | | }}
GGGGGT....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
T-2
T-2
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | |T|T|T| | | }}
....TTT...
{{pfrow|G|G|G|G|G|T| | | | }}
GGGGGT....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
T-3
T-3
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | |T| | | }}
......T...
{{pfrow| | | | | |T|T| | | }}
.....TT...
{{pfrow|G|G|G|G|G|G|T| | | }}
GGGGGGT...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
T-4
T-4
|}
|}
Line 390: Line 636:
{|
{|
|- valign="top"
|- valign="top"
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Kaidan overhang
Kaidan overhang
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow|G|G|G|G|G|G| | | |Z}}
GGGGGG...Z
{{pfrow|G|G|G|G|G|G|G| |Z|Z}}
GGGGGGG.ZZ
{{pfrow|G|G|G|G|G|G|G|G|Z|G}}
GGGGGGGGZG
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow|G|G|G|G|G|G| | | |Z}}
GGGGGG...Z
{{pfrow|G|G|G|G|G|G|G| |Z|Z}}
GGGGGGG.ZZ
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|}
|}
{|
{|
|- valign="top"
|- valign="top"
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Direct overhang
Direct overhang
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | |O|O| | }}
......OO..
{{pfrow|G|G|G|G|G|G|O|O| | }}
GGGGGGOO..
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|}
|}
An alternative to using a Z tetromino would be to use a J. This is even less recommended, however, because the empty column will remain covered after performing the T-Spin Double.
An alternative to using a Z tetromino would be to use a J. This is even less recommended, however, because the empty column will remain covered after performing the T-Spin Double.
{|
{|
|- valign="top"
|- valign="top"
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Kaidan overhang
Kaidan overhang
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | |J}}
.....OO..J
{{pfrow|G|G|G|G|G|G| | | |J}}
GGGGGG...J
{{pfrow|G|G|G|G|G|G|G| |J|J}}
GGGGGGG.JJ
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | |J}}
.....OO..J
{{pfrow|G|G|G|G|G|G|P|P|P|J}}
GGGGGGPPPJ
{{pfrow|G|G|G|G|G|G|G|P|J|J}}
GGGGGGGPJJ
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | |J}}
.....OO..J
{{pfrow|G|G|G|G|G|G|G|G| |G}}
GGGGGGGG.G
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|}
|}


Line 479: Line 725:
{|
{|
|- valign="top"
|- valign="top"
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Pre-Kaidan
Pre-Kaidan
|{{pfstart}}
|<playfield>
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|S| }}
GGGGGGGGS.
{{pfrow|G|G|G|G|G|G|G|G|S|S}}
GGGGGGGGSS
{{pfrow|G|G|G|G|G|G|G|G|G|S}}
GGGGGGGGGS
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Kaidan
Kaidan
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow| | | | | |O|O| | | }}
.....OO...
{{pfrow|G|G|G|G|G|G| | | |Z}}
GGGGGG...Z
{{pfrow|G|G|G|G|G|G|G| |Z|Z}}
GGGGGGG.ZZ
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G|G|G| | | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGGG..
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Pre-Kaidan
Pre-Kaidan
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | |O|O| | }}
......OO..
{{pfrow|G|G|G|G|G|G|O|O| | }}
GGGGGGOO..
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G| |Z}}
GGGGGGGG.Z
{{pfrow|G|G|G|G|G|G|G|G|Z|Z}}
GGGGGGGGZZ
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
Opting for QTK
Opting for QTK
|}
|}


'''Imperial TSS / TSD TSS'''
'''Imperial TSS / TSD TSS'''
<br>Depending on the situation, a player may wish to compromise by using an O tetromino to create a T-Spin Single instead of a Z tetromino to create a T-Spin Double.  
<br>Depending on the situation, a player may wish to compromise by using an O tetromino to create a T-Spin Single instead of a Z tetromino to create a T-Spin Double. The option of using an Imperial TSS or a TSD TSS allows for versatility with different tetromino placements and when skimming up or down.
{|
{|
|{{pfstart}}
|- valign="top"
{{pfrow| | | | | | |L| | | }}
|<playfield>
{{pfrow| | | | |L|L|L| | | }}
......L...
{{pfrow|G|G|G|G|G|G| | | | }}
....LLL...
{{pfrow|G|G|G|G|G|G|G| | | }}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G|G| | }}
GGGGGGG...
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGG..
{{pfend}}
GGGGGGGGG.
|{{pfstart}}
</playfield>
{{pfrow| | | | | | |L| | | }}
|<playfield>
{{pfrow| | | | |L|L|L| | | }}
......L...
{{pfrow|G|G|G|G|G|G| | | | }}
....LLL...
{{pfrow|G|G|G|G|G|G|G| |O|O}}
GGGGGG....
{{pfrow|G|G|G|G|G|G|G|G|O|O}}
GGGGGGG.OO
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGOO
{{pfend}}
GGGGGGGGG.
</playfield>
|<playfield>
..........
......L...
....LLLP..
GGGGGGPP..
GGGGGGGPOO
GGGGGGGGG.
</playfield>
Imperial TSS
|}
{|
|- valign="top"
|<playfield>
......L...
....LLL...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
</playfield>
|<playfield>
......L...
....LLL...
GGGGGG....
GGGGGGG.OO
GGGGGGGGOO
GGGGGGGGG.
</playfield>
|<playfield>
..........
......L...
....LLL...
GGGGGGPPP.
GGGGGGGPOO
GGGGGGGGG.
</playfield>
TSD TSS
|}
|}


Line 566: Line 850:
'''Kaidan ST Arrow''' (Kaidan → ST Stacking)
'''Kaidan ST Arrow''' (Kaidan → ST Stacking)
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G| | | | | | }}
GGGG......
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGGGOO...
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGGGOO...
{{pfrow|G|G|G|G|G|G| | | |Z}}
GGGGGG...Z
{{pfrow|G|G|G|G|G|G|G| |Z|Z}}
GGGGGGG.ZZ
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G| | | | | | }}
GGGG......
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGGGOO...
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGGGOO...
{{pfrow|G|G|G|G|G|G|P|P|P|Z}}
GGGGGGPPPZ
{{pfrow|G|G|G|G|G|G|G|P|Z|Z}}
GGGGGGGPZZ
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|S|S| | | | }}
GGGGSS....
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGGGOO...
{{pfrow|G|G|G|G|G|O|O| | | }}
GGGGGOO...
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|S|S| | | |Z}}
GGGGSS...Z
{{pfrow|G|G|G|G|G|O|O| |Z|Z}}
GGGGGOO.ZZ
{{pfrow|G|G|G|G|G|O|O| |Z| }}
GGGGGOO.Z.
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfend}}
</playfield>
|}
|}


'''Kaidan → Yoshihiro SD'''
'''Kaidan → Yoshihiro SD'''
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G| | | | | | }}
GGGG......
{{pfrow|G|G|G|G|L|L|L| | | }}
GGGGLLL...
{{pfrow|G|G|G|G|L|G| | | |Z}}
GGGGLG...Z
{{pfrow|G|G|G|G|G|G|G| |Z|Z}}
GGGGGGG.ZZ
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow|G|G|G|G| | | | | | }}
GGGG......
{{pfrow|G|G|G|G|L|L|L| | | }}
GGGGLLL...
{{pfrow|G|G|G|G|L|G|P|P|P|Z}}
GGGGLGPPPZ
{{pfrow|G|G|G|G|G|G|G|P|Z|Z}}
GGGGGGGPZZ
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow|G|G|G|G| | | | | | }}
GGGG......
{{pfrow|G|G|G|G|L|L|L| | | }}
GGGGLLL...
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|}
|}
{|
{|
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|S|S| | | | }}
GGGGSS....
{{pfrow|G|G|G|G|L|L|L| | | }}
GGGGLLL...
{{pfrow|G|G|G|G|G|G|G|G|Z| }}
GGGGGGGGZ.
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|S|S| | | |P}}
GGGGSS...P
{{pfrow|G|G|G|G|L|L|L| |P|P}}
GGGGLLL.PP
{{pfrow|G|G|G|G|G|G|G|G|Z|P}}
GGGGGGGGZP
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|{{pfstart}}
|<playfield>
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | | | | | | }}
..........
{{pfrow| | | | | |S|S| | | }}
.....SS...
{{pfrow|G|G|G|G|S|S|P|P|P|T}}
GGGGSSPPPT
{{pfrow|G|G|G|G|L|L|L|P|T|T}}
GGGGLLLPTT
{{pfrow|G|G|G|G|G|G|G|G|G| }}
GGGGGGGGG.
{{pfend}}
</playfield>
|}
|}


[[Category: T-Spin Methods]]
[[Category: T-Spin setups]]
[[Category: T-Spin No Kick Methods]]

Latest revision as of 09:31, 9 September 2019

The Kaidan, or Stairs, T-Spin setup, discovered by Tetris DS player TCM-WC, is a prophecy T-Spin Double method that takes advantage of a step formation beside an empty column. After an overhang is created, a Z tetromino is platformed over the empty column and used as a base for the T-Spin Double. After performing the T-Spin Double, the empty column should be open again. The Kaidan setup is especially effective in games that reward a Back-to-Back bonus.

..........
..........
GGGGG.....
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
..........
.....OO...
GGGGGOO...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
..........
.....OO...
GGGGGOO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.
..........
.....OO...
GGGGGOO...
GGGGGGPPPZ
GGGGGGGPZZ
GGGGGGGGZ.
GGGGGGGGG.
..........
..........
..........
.....OO...
GGGGGOO...
GGGGGGGGZ.
GGGGGGGGG.

General Tips

  • Steps one to four are mandatory for the setup to work. The fourth step can often be incorporated through the tetromino used to create the overhang.
..........
..........
GGGGG4....
GGGGGG3...
GGGGGGG2..
GGGGGGGG1.
..........
.....SS...
GGGGS4....
GGGGGG3...
GGGGGGG2..
GGGGGGGG1.


* Rows one and two do not have to be complete for the setup to function.

..........
..........
GGG....GGG
GGGG...GGG
-2222..222
-11111.111
...L......
.LLL......
GGG...ZGGG
GGGG.ZZGGG
-2222Z.222
-11111.111
...L......
.LLL......
GGGPPPZGGG
GGGGPZZGGG
-2222Z.222
-11111.111
..........
..........
...L......
.LLL......
-2222Z.222
-11111.111


* The overhang and base are interchangeable in order of placement.

.....OO...
.....OO...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

Overhang first

.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.

Then base

..........
..........
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.

Base first

.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.

Then overhang

Setting Up the Stairs

Filling the Body

..........
..........
GGGGGG....
GGGGGGS...
GGGGGGSS..
GGGGGGGSG.

S-1

..........
..........
GGGGG-....
GGGGGZZ...
GGGGGGZZ..
GGGGGGGGG.

Z-1

..........
..........
GGGGG-....
GGGGG-T...
GGGGGTTT..
GGGGGGGGG.

T-1

Filling the Bottom Gap

Although there are seven unique situations, they are uncommon during play and are generally less preferred than the line clear method.

..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGOO.
GGGGGGGOO.

O-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGI.
GGGGGGGGI.
GGGGGGGGI.
GGGGGGGGI.

I-1

..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGJ.
GGGGGGGGJ.
GGGGGGGJJ.

J-1

..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGS..
GGGGGGGSS.
GGGGGGGGS.

S-1

..........
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGZZ..
GGGGGGGZZ.

Z-1

..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGT..
GGGGGGGTT.
GGGGGGGTG.

T-1

..........
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGT..
GGGGGGTTT.

T-2

Line Clearing the Edge

Line clearing is the most versatile method to prepare the Kaidan edge and is generally preferred and used more often than filling the gap. As opposed to the former, line clearing provides five unique situations, often encountered when skimming, with three where alternate tetrominoes may be used. It is important to note the three interchangeable situations (O-1 and S-1, J-1 and L-1, J-2 and L-2) as they provide for more flexibility.

..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGOO
GGGGGGGGOO
GGGGGGGGG.

O-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGI.
GGGGGGGGI.
GGGGGGGGI.
GGGGGGGGIG

I-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGJJ
GGGGGGGGJ.
GGGGGGGGJ.

J-1

GGGGGG....
GGGGGGG...
GGGGGGGJ..
GGGGGGGJJJ
GGGGGGGGG.
GGGGGGGGG.

J-2

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGL.
GGGGGGGGL.
GGGGGGGGLL

L-1

GGGGGG....
GGGGGGG...
GGGGGGGLLL
GGGGGGGL..
GGGGGGGGG.
GGGGGGGGG.

L-2

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGGGS

S-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGT.
GGGGGGGGTT
GGGGGGGGTG

T-1

There's actually another situation involving the Z tetromino which utlizes the alternative line clear Z base, but it's not recommended because the QTK alternative should be used instead.

GGGGGG....
GGGGGGG...
GGGGGGGG.Z
GGGGGGGGZZ
GGGGGGGGZG

Z-1

Twist

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGIIII.
GGGGGGGGG.

I-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGJJJ.
GGGGGGGGJ.

J-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGL.
GGGGGGLLL.

L-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGLLL
GGGGGGGLG.

L-2

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGSS
GGGGGGGSS.
GGGGGGGGG.

S-1

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGT.
GGGGGGGTTT
GGGGGGGGG.

T-1

T-Spin Single

GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGG..
GGGGGGG...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGP.
GGGGGGGPPP
..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGT.

Creating The Overhang

The overhang that is set up in advance in Kaidan setups are based on the principles of the T-Spin Double overhang.

.....OO...
.....OO...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

O-1

..........
...IIII...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

I-1

..........
....J.....
....JJJ...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

J-1

..........
..........
.....JJ...
GGGGGJ....
GGGGGJG...
GGGGGGGG..
GGGGGGGGG.

J-2

......J...
......J...
GGGGGJJ...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

J-3

..........
....JJJ...
GGGGGGJ...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

J-4

..........
......L...
....LLL...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

L-1

..........
..........
....LLL...
GGGGLG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

L-2

.....L....
.....L....
GGGGGLL...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

L-3

.....LL...
GGGGGGL...
GGGGGGL...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

L-4

..........
..........
.....SS...
GGGGSS....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

S-1

.....S....
.....SS...
GGGGGGS...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

S-2

..........
......Z...
.....ZZ...
GGGGGZ....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

Z-1

..........
....ZZ....
GGGGGZZ...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

Z-2

..........
.....T....
....TTT...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

T-1

..........
.....T....
.....TT...
GGGGGT....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

T-2

..........
..........
....TTT...
GGGGGT....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

T-3

......T...
.....TT...
GGGGGGT...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.

T-4

Alternatives

Line Clear Base

This method is not recommended since the T-Spin Double can be directly created from the O tetromino.

..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG.G
GGGGGGGGG.

Kaidan overhang

.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZG
GGGGGGGGG.
..........
.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGG.
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG.G
GGGGGGGGG.

Direct overhang

..........
......OO..
GGGGGGOO..
GGGGGGG...
GGGGGGGG.G
GGGGGGGGG.

An alternative to using a Z tetromino would be to use a J. This is even less recommended, however, because the empty column will remain covered after performing the T-Spin Double.

..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG.G
GGGGGGGGG.

Kaidan overhang

.....OO...
.....OO..J
GGGGGG...J
GGGGGGG.JJ
GGGGGGGG.G
GGGGGGGGG.
.....OO...
.....OO..J
GGGGGGPPPJ
GGGGGGGPJJ
GGGGGGGG.G
GGGGGGGGG.
..........
..........
.....OO...
.....OO..J
GGGGGGGG.G
GGGGGGGGG.

T-Spin Double Replacements

Pre-Kaidan QTK
Depending on the situation, a player may wish to opt for a QTK setup instead of setting up a premature Kaidan where the steps have not been made yet. In this example, rather than setting up the Kaidan overhang and then skimming down with an S tetromino before creating the base with a Z tetromino, the player can choose to create the QTK overhang and then clear with a Z tetromino to produce the T-Spin Double.

..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGGG.
GGGGGGGGG.

Pre-Kaidan

.....OO...
.....OO...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGS.
GGGGGGGGSS
GGGGGGGGGS
GGGGGGGGG.

Kaidan

..........
..........
.....OO...
.....OO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGZ.
GGGGGGGGG.
..........
..........
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGG..
GGGGGGGG..
GGGGGGGGG.
GGGGGGGGG.

Pre-Kaidan

..........
......OO..
GGGGGGOO..
GGGGGGG...
GGGGGGGG.Z
GGGGGGGGZZ
GGGGGGGGZ.
GGGGGGGGG.
GGGGGGGGG.

Opting for QTK

Imperial TSS / TSD TSS
Depending on the situation, a player may wish to compromise by using an O tetromino to create a T-Spin Single instead of a Z tetromino to create a T-Spin Double. The option of using an Imperial TSS or a TSD TSS allows for versatility with different tetromino placements and when skimming up or down.

......L...
....LLL...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
......L...
....LLL...
GGGGGG....
GGGGGGG.OO
GGGGGGGGOO
GGGGGGGGG.
..........
......L...
....LLLP..
GGGGGGPP..
GGGGGGGPOO
GGGGGGGGG.

Imperial TSS

......L...
....LLL...
GGGGGG....
GGGGGGG...
GGGGGGGG..
GGGGGGGGG.
......L...
....LLL...
GGGGGG....
GGGGGGG.OO
GGGGGGGGOO
GGGGGGGGG.
..........
......L...
....LLL...
GGGGGGPPP.
GGGGGGGPOO
GGGGGGGGG.

TSD TSS

Transfers

Kaidan ST Arrow (Kaidan → ST Stacking)

GGGG......
GGGGGOO...
GGGGGOO...
GGGGGG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGG......
GGGGGOO...
GGGGGOO...
GGGGGGPPPZ
GGGGGGGPZZ
GGGGGGGGZ.
..........
.....SS...
GGGGSS....
GGGGGOO...
GGGGGOO...
GGGGGGGGZ.
..........
.....SS...
GGGGSS...Z
GGGGGOO.ZZ
GGGGGOO.Z.
GGGGGGGGZ.

Kaidan → Yoshihiro SD

GGGG......
GGGGLLL...
GGGGLG...Z
GGGGGGG.ZZ
GGGGGGGGZ.
GGGGGGGGG.
GGGG......
GGGGLLL...
GGGGLGPPPZ
GGGGGGGPZZ
GGGGGGGGZ.
GGGGGGGGG.
..........
..........
GGGG......
GGGGLLL...
GGGGGGGGZ.
GGGGGGGGG.
..........
.....SS...
GGGGSS....
GGGGLLL...
GGGGGGGGZ.
GGGGGGGGG.
..........
.....SS...
GGGGSS...P
GGGGLLL.PP
GGGGGGGGZP
GGGGGGGGG.
..........
..........
.....SS...
GGGGSSPPPT
GGGGLLLPTT
GGGGGGGGG.