Ajanba TSD

ajanba TSD is invented by the Tetris player ajanba. It resembles the TKI 3 openers but the I piece is moved 1 column to the right. The first O piece also needs to come early and the first bag is placed like this:

Second Bag and later

Mechanical TSD

There are 2 ways the second bag can be stacked, both of which requires an early S piece. The third bag onwards can be stacked in one of these 4 ways shown below. Alternatively, you can try to achieve a Perfect Clear in the third bag.

• Perfect Clear route (82.14% PC rate, 8 minimal solutions)

Perfect Clear after 6 lines (standard)

Eventually, the technique results in 2 T-Spin Doubles within the first 2 bags followed by a Perfect Clear opportunity after 6 cleared lines.

If the I piece shows up late in the second bag, then there is a chance to delay the first T-Spin and build a second T-Slot above. In this case the 2 T-Spin Doubles can be executed in quick succession and there is a Perfect Clear opportunity on top of it.

Agent 1568AH's continuations

These continuations chiefly involve placing the S, Z and I pieces on the left and the O piece and either J or L on the right. There is also a case if the O and L or J and O are placed before the T-Spin Double, then placing the I piece afterwards. In either case, you can make a Perfect Clear after either 6 or 8 total lines.

Perfect Clear after 6 lines

There are four ways to get a Perfect Clear after 6 lines.

• S → I or Z → I and T → JL (28.57% PC rate, 1 solution)

• S → I or Z → I and T → O (L on hold, 4.76% PC rate, 1 solution)

• O → L and T → IJ (33.33% PC rate, 2 minimal solutions)

• J → O and T → IL (38.10% PC rate, 3 minimal solutions)

Perfect Clear after 8 lines

The best situation is that if you can make a T-Spin Double before placing J or L if the O piece was used or O if the J piece was used and also hold the remaining piece, will get an extremely high Perfect Clear chance (99.84% at least). For the final two cases, it can also be done if OL or JO was used as the overhang first, then place the I piece after the T-Spin Double.

• Z → I or S → I and T → J (L on hold, 100% PC rate, 44 minimal solutions): This is the most ideal way to get a Perfect Clear when the Z, S and I pieces are placed on the left. Furthermore, there is also an option to achieve a Perfect Clear after 6 lines, if the I piece comes first or second in the third bag.

• S → I or Z → I and T → L / O → L and T → I (J on hold, 99.90% PC rate, 45 minimal solutions): This method can be done in two ways, namely placing the L piece after the T-Spin Double or the I piece after the TSD. Again, there is also an option to achieve a Perfect Clear after 6 lines, if the I piece comes early in the third bag.

• S → I or Z → I and T → O / J → O and T → I (L on hold, 99.84% PC rate, 49 minimal solutions): This is stacked akin to the way above, except this involves T, O, J and I. If you want to achieve a Perfect Clear after 6 lines, the J and I pieces must be the first 2 pieces of the third bag.

If you must place the J and L pieces before the T-Spin Double, these ways are good for a Perfect Clear opportunity.

TBD

T-Spin Single → TSD PC (DSD PC)

If the S comes before J and O and Z comes before I in the second bag, one can make a T-Spin Single and it will create the same shape one would ideally make in Riif's Stacking v3. The success rate is 98.85% and there are 25 minimal solutions. There is also a good chance a T-Spin Double can be achieved within the Perfect Clear.

Alternatively, if the J piece comes before O and also be able to keep the S piece on hold, the continuation below would be suitable. The success rate is 97.54% and there are 19 minimal solutions. If you must place the S piece before the T-Spin Single, it should be placed on the Z piece, but the success rate would be 59.01%.

Ideal (S on hold)

97.54%

Compromise (59.01%)

T-Spin Mini Single → TSD PC (DMD PC)

A similar, yet less powerful technique that requires the S piece to come before Z so that the T-Spin Mini Single can be scored before the chance to get a Perfect Clear after a potential T-Spin Double in the third bag. Ideally, the J piece should also come before the O piece and this will therefore give you a 95.91% chance (same shape as the O→J way in PC-Spin (Okey Version).

Another way requires the L piece to come before the O piece alongside the S before Z requirement, or the S piece to come before Z, then the O piece. There is a 95.28% chance to get a Perfect Clear in the state below.

Mofumofu Cannon

In the second bag, if the O piece comes before J and the I piece comes before L, you can use this derivation. Afterwards, you can achieve a Perfect Clear after 8 or 14 lines.

Perfect Clear after 8 lines

• O → J and I → L (95.48% PC rate, 23 minimal solutions)

Perfect Clear after 14 lines

For this continuation, in the third bag, you need an S piece before L and a Z piece before J then I. The fourth bag is always stacked the same way, leading to a 58.97% Perfect Clear chance in the fifth bag.

See also

• TKI 3 Opening - Another opener with several continuations in general
• Crown TSD - Another opener with several continuations in general
• Glitter Brooch - Another opener with several continuations, especially Perfect Clear continuations
• Albatross Special
• Mountainous Stacking - A Triple Double opener that can create the same shape as the one in the TSS → TSD PC continuation

External links

• Tetris Maps's page about ajanba TSD (especially Mofumofu Cannon)