Block Out Level 326 Solution: How to Clear Every Tube

To beat Level 326 in Block Out, focus on emptying one tube completely to serve as a reusable buffer, then consolidate exposed duplicate colors to unearth trapped base layers. Level 326 scatters isolated color blocks across deep stacks, making uncoordinated moves an immediate deadlock risk.

Transfer Rules and Opening Priorities

Each tube holds up to four block units. A transfer is valid only if the target tube is empty or if its current top block matches the color of the incoming block and has open capacity.

Because Level 326 fragments matching colors across multiple columns, opening moves must prioritize consolidation over exploration:

Scan top-layer duplicates: Identify exposed colors that can be combined immediately without using empty space.
Target shallow mixed tubes: Merge blocks into tubes with fewer underlying layers to reveal lower blocks quickly.
Protect empty buffer tubes: Never place a single, isolated block into an empty tube unless that move directly enables an immediate match that frees the slot again.

Depositing a stray block into an empty tube permanently restricts that space to a single color, eliminating your primary sorting lane.

Managing Buffer Space and Transfers

Maintaining board mobility requires strict space management through two key practices:

The One-Empty-Tube Rule

Always leave at least one tube fully vacant at the end of a transfer sequence. If every tube on the board contains at least one block, you lose the ability to shift blocking layers and become entirely dependent on matching whatever sits on top. When this occurs, the board frequently stalls within two turns.

Batching Matching Blocks

Whenever you uncover matching blocks beneath a blocking piece, confirm that you have an open destination ready to take all consecutive matching units before making the shift. Splitting matching blocks across multiple tubes wastes available capacity and requires extra transfers to reconnect them later.

Level 326 Step-by-Step Sorting Phases

Tackle the board in three structured phases to prevent circular shuffling:

Phase	Objective	Primary Target	Main Risk
1. Excavation	Clear a complete tube to zero	Shallowest mixed stacks	Filling all buffer space
2. Consolidation	Complete the first 4-block stack	Most accessible exposed color	Stranding isolated singles
3. Clean-Up	Clear remaining paired sets	Reserved buffer tubes	Prematurely capping partial stacks

Phase 1: Excavation

Focus your opening moves on the tube containing the fewest total blocks beneath surface-level duplicates. Shift its top pieces onto matching stacks elsewhere until the tube is entirely empty. That cleared tube becomes your active operational buffer for deeper swaps.

Phase 2: Consolidation

Select one color with the greatest number of visible, unobstructed units and commit to filling its tube to the four-block limit. Completing a full color stack permanently locks in progress and reduces the number of competing colors remaining on the board.

Phase 3: Clean-Up

With fewer loose colors in circulation, route the final mixed segments through your open buffer. Group remaining pairs together, shift them onto their matching base blocks, and complete the remaining tubes.

How to Detect and Prevent Deadlocks

Stop your current sequence immediately if you encounter any of these warning signs:

No top matches: Every exposed block is a different color, and no tube is empty.
Trapped capstones: A stray, off-color block rests on top of three matching blocks, but no valid destination exists for the stray piece.
Circular transfers: You move a block between two tubes without revealing a new piece or reducing stack fragmentation.

To recover from a near-lock, search the board for partial stacks of the same color that can be collapsed together to free up an additional slot before committing further moves.