Block Out Level 109 Guide: Buffer Management and Move Order

To clear Level 109 in Block Out, clear shallow exterior stacks before touching deep center columns, and never let your holding buffer drop below two open slots unless an immediate three-block match reclaims space.

Level 109 features tall vertical columns with multi-colored blocks layered on top of each other. Lower tiles remain locked until the pieces above them are routed away. Sending blocks to the buffer tray at the bottom without immediately completing a three-piece set ties up holding capacity. If the buffer fills completely without triggering a match, the board deadlocks and the stage fails.

Core Buffer Rule: Keep Two Slots Open

The buffer tray serves as an active routing lane rather than long-term storage. To navigate the board safely, follow these space-management rules:

Maintain a two-slot safety margin: Never transfer a non-matching surface tile if it leaves fewer than two vacant buffer slots.
Confirm the full trio before parking: Do not move two matching blocks into the buffer unless the third block is already exposed or will be uncovered on your next move.
Avoid parking isolated colors: A single block whose matching pieces are buried deep in other columns will sit in the buffer indefinitely, restricting room for every subsequent sequence.

Recommended Clearing Order

Dismantling the board in structured phases keeps the buffer clear and reveals buried tiles systematically. Clear from the outside inward to open up working room.

Phase	Board Focus	Buffer Requirement	Objective
Phase 1: Outer Columns	Shallow exterior stacks	Keep 3+ slots open	Clear surface pairs and uncover bottom-layer tiles
Phase 2: Center Columns	Deep multi-layer stacks	Keep 2+ slots open	Move blocker tiles to free buried color sets
Phase 3: Endgame Sweep	Remaining exposed singles	Cycle 1–2 slots actively	Direct the final trios straight into completed matches

Phase 1: Shallow Exterior Stacks

Begin by clearing the shortest outer columns. Because these stacks have fewer hidden layers, they require minimal buffer investment to eliminate. Fully clearing an exterior column widens visibility and eliminates competing color lines early.

Phase 2: Deep Center Stacks

Once the edges are thinned, target the deep center stacks. Before moving a blocker out of a center column, locate where the matching pieces for the buried tile sit:

Count the blocker tiles sitting directly above the target color.
Verify that your buffer can hold those blockers without dropping below two vacant slots.
Extract the blockers and immediately pull the target block to complete a three-block match and empty the tray.

Phase 3: Endgame Sweep

With the deep columns dismantled, only exposed singles and pairs remain. Route the remaining blocks sequentially into the buffer to trigger final trio matches and clear the stage.

Avoiding Split-Color Traps

A split-color trap occurs when two matching blocks are exposed on the surface, but the third rests underneath an unrelated color in another stack.

Moving the two surface blocks into the buffer immediately might seem productive, but it locks up two slots while you work through the obstructing column. If clearing those blockers requires parking additional mismatched pieces, the tray can quickly fill to capacity.

When you encounter a split color, check whether an unobstructed color match is available elsewhere on the board. Clearing an independent set first empties the buffer and gives you the necessary capacity to safely extract the trapped third tile.