Loyal TD is a C-Spin opener invented by Agent 1568AH in March 2021.

First Bag

It only requires an I piece before O, J and S.

Early I

Finished 1st Bag

Second and Third Bags

You can always make a Perfect Clear if you can hold the O piece, ideally if it comes late.

If you cannot hold it, you can place it in one of these three ways, all of them requiring a late O piece. The first is the most ideal case.

• If the O piece comes after I and S, use the first diagram.
• If the O piece comes after the L piece, use the second diagram.
• If the O piece comes after the J piece, use the third diagram.

If you get an early O piece, use the compromise below. After the T-Spin Triple, make either another T-Spin Triple, Imperial Cross or Perfect Clear.

T-Spin Triple

Imperial Cross

Perfect Clear

Perfect Clear

• O kept on hold (100.00% PC rate, 8 minimal solutions)

• SI → O (99.68% PC rate, 8 minimal solutions)

• L → O (95.00% PC rate, 19 minimal solutions)

• J → O (87.82% PC rate, 11 minimal solutions)

• O → L (Compromise, 48.89% PC rate, 14 minimal solutions)

See Also

• C-Spin
• Triple Double Attack