Block Out Level 624: How to Avoid Deadlocks and Clear the Board

To clear Level 624 in Block Out, route exposed matching colors directly into active collection receptacles before shifting unmatched pieces, and keep at least one buffer slot empty at all times. Stashing mismatched blocks into the holding zone without an immediate exit path causes deadlocks on this stage because the columns feature tightly alternating color layers.

Opening Strategy and Lane Clearance

Before shifting any piece, scan the exposed top tier across every lane to identify pairs and immediate paths into open collection doors.

1. Resolve direct surface matches first: Route exposed pieces into matching receptacles to free up movement without consuming buffer space.
2. Dismantle the shallowest column: Choose the vertical stack that requires the fewest transfers to uncover a color needed by an active door.
3. Establish an open staging lane: Completely clearing one column gives you an unrestricted column to group matching colors together.
4. Consolidate single colors: Avoid scattering identical pieces across separate lanes, which clogs access to buried tiers.

Buffer Slot Management

Buffer slots on Level 624 must serve solely as temporary transit lanes. Committing multiple blocks to holding slots to dig out a single buried piece will quickly lock the board if the revealed piece cannot exit immediately.

• Place a block in the buffer only when that move directly enables a match or completely empties a column.
• Reserve at least one buffer slot as an escape route for unexpected blockers.
• Verify exit moves before committing: if an uncovered block cannot reach an exit within two moves, switch to an alternate column.

Mid-Game Sorting and Final Clean-Up

Once you exhaust the first complete color group from the board, use the cleared space to accelerate the remaining clears.

• Transfer blocks into cleared lanes: Use empty columns rather than buffer slots to hold secondary colors while peeling back mixed stacks.
• Focus on dominant surface colors: Target the next most common color exposed on column tops to keep the board open.
• Verify pending doors before late moves: Near the end of the puzzle, check that each remaining block corresponds to an active or pending collection receptacle before moving it to the buffer.
• Empty the buffer first: Clear pieces out of holding slots as soon as their matching doors unlock, keeping your buffer clear until the final block exits.