Double Perimeter Defense Formation(4x4)

A DPDF drill to practice the final 1024 before 65536

Double Perimeter Defense Formation, or DPDF, is one of the oldest non-snake formations that is played. Traditionally, it is played with 3 small tiles forming one "perimeter", with a 2x3 block of larger tiles under, and the tiles on the outside forming the second perimeter.

Traditional DPDF

[TODO]

Minsker DPDF

[TODO]

DPDF in variants

[TODO]