Block Out Level 304 Guide: Color Sorting and Buffer Management

To beat Level 304 in Block Out, focus on completing exposed surface color sets first and keep at least two buffer slots empty at all times. Never transfer a blocking piece into your holding tray unless that move immediately enables a match or uncovers a matching piece on your next turn.

Opening Moves and Surface Matching

Level 304 arranges colors across multiple vertical columns, burying key pieces beneath mismatched tiles. Randomly pulling blocks to explore deeper layers quickly fills the holding tray and triggers a deadlock.

Begin by surveying the top layer across all columns:

• Target surface pairs: Identify colors that show two or three matching pieces across the top or second layer of accessible columns.
• Commit only in direct pairs: Move a blocking tile into the buffer only when doing so directly grants access to a matching piece that clears a set.
• Ignore isolated tiles: Leave one-off surface colors alone until their corresponding matches are uncovered elsewhere on the board.

Clearing direct surface matches reduces overall clutter and reveals the layout of the middle layers without filling your temporary storage.

Buffer Space Thresholds

Managing the holding tray is the central mechanic for surviving Level 304. Because the tray has limited capacity, track your current slot usage against these operational limits:

Adhere to a strict two-move limit: do not place an unmatchable tile into your buffer unless you can complete its set within two subsequent actions.

Mid-to-Late Stage Column Excavation

Draining single columns completely provides far more maneuvering space than shallowly clearing multiple stacks at once. Progress through the remaining layout using this sequence:

1. Resolve remaining surface sets: Clear any newly exposed surface matches until your holding buffer is down to zero or one occupied slot.
2. Excavate the shallowest target column: Pick the shortest stack hiding pieces needed for pending sets, move its barrier tiles into the buffer, and clear the column down to the base.
3. Dismantle remaining stacks: With an entire vertical lane opened up, route the exposed matching pieces into your tray to finish the final color groups.

Recovering from a Clogged Buffer

If your holding bar reaches five or more occupied slots, you are at risk of an immediate failure. To recover:

1. Pause all attempts to uncover new layers in tall stacks.
2. Review the specific colors currently occupying your buffer slots.
3. Scan the visible top tiles of all remaining columns to find an exact match for one of your staged colors.
4. Draw that matching tile to trigger an elimination, freeing up buffer capacity before resuming column clearing.