Block Out Level 513 Guide: Door Sequence and Buffer Control

To beat Level 513 in Block Out, route matching blocks directly to active color exit doors while maintaining at least two open buffer slots at all times. Solve the level by taking zero-cost direct exits first, parking inactive blocks only when doing so releases multiple matching pieces, and clearing parked colors immediately when exit gates transition.

Opening Priorities and Bottleneck Analysis

Level 513 features dense block clusters blocking central corridors, with active exit doors that initially accept only one color. Moving perimeter blocks at random quickly fills your waiting buffer and causes early deadlocks.

Evaluate the grid from the inside out before making your first move:

1. Locate the active exit door: Identify which color the open exit accepts first.
2. Clear direct paths: Move unobstructed matching blocks straight out of the maze. Direct exits take zero buffer space and immediately widen narrow pathways.
3. Target lane intersections: Identify anchor blocks that block multi-piece lines. Only move an off-color anchor into the buffer if it immediately frees two or more matching blocks to exit. If moving an off-color block frees only one matching piece, leave it in place.

Buffer Management Rules

Treat your buffer dock as an emergency staging area rather than general storage. Filling buffer slots with unrelated colors leaves no maneuverability for interior blocks.

• Keep two slots open: Treat the buffer dock as completely full whenever only two empty spaces remain. Reserve those final two slots exclusively for multi-step unblocking sequences.
• Avoid duplicate inactive colors: Do not park two blocks of the same inactive color in the buffer unless that specific color belongs to the next exit gate.
• Confirm immediate follow-ups: Before sending any block into a buffer slot, verify that the piece it uncovers can exit the board on the very next move.

Managing Door Transitions and Endgame Cleanup

Exit doors shift to the next designated color once their capacity is satisfied. A door shift instantly changes the value of all remaining pieces on the board.

1. Survey the incoming color: Before sending the final block into an active door, inspect the layout for blocks matching the upcoming door color. Ensure paths to those pieces are cleared before the switch occurs.
2. Flush the buffer first: As soon as the door switches, move matching blocks out of your buffer dock before pulling new pieces from the board. This restores full staging capacity for the remaining puzzle.
3. Dismantle central clusters: Route the new active pieces out of central intersections to create open transit corridors across the board.
4. Finish one color line at a time: During the endgame, clear remaining colors systematically rather than scattering moves across different groups. Match remaining board pieces against door requirements to ensure no isolated blocks get trapped behind closed doors.