This initial state describes a Tetris puzzle on a 6-row by 4-column grid. Positions are named by their row and column (e.g., f0-0f is row 0, column 0). Positions are connected horizontally and vertically to their immediate neighbors.

Initially, the following positions are clear (empty and available for pieces to move into):

- Row 0: f0-1f, f0-3f
- Row 1: f1-3f
- Row 2: f2-2f, f2-3f
- Row 3: f3-0f, f3-1f, f3-2f, f3-3f
- Row 4: f4-0f, f4-1f, f4-2f, f4-3f
- Row 5: f5-0f, f5-1f, f5-2f, f5-3f

The following Tetris pieces are placed on the grid:

- One "L" shaped piece ("rightl0") occupies positions: f0-0f, f1-0f, f1-1f.
- One straight two-square piece:
  - "straight0" occupies positions: f0-2f, f1-2f.
- Two single-square pieces:
  - "square0" occupies position: f2-0f.
  - "square1" occupies position: f2-1f.