Block Out: How to Clear Levels 210, 211, and 212

To pass levels 210, 211, and 212 in Block Out, maintain at least one empty tube as a working buffer while systematically clearing vertical color stacks from top to bottom. Filling every tube early in these stages restricts movement, leading to isolated blocks and deadlocks.

Preserving Buffer Space with Empty Tubes

Keeping a buffer tube open gives you the space needed to maneuver multi-layered color stacks without clogging the board.

• Identify accessible top colors: Scan the top layer across all stacks right when the level begins.
• Open a workspace tube early: Shift top blocks into matching positions to empty a single tube as quickly as possible.
• Protect your final open slot: Never place a block into your last empty tube unless that move directly completes a set or unblocks an immediate match.

Treat your open tube as a temporary workspace. Use it to hold off-color pieces briefly while moving target colors into dedicated stacks.

Managing Stack Deconstruction and Color Order

Rather than trying to sort every color at the same time, focus on one or two colors that appear most frequently on the top layers.

1. Clear high-frequency colors first: Complete single-color sets early to turn filled tubes into permanent open spaces.
2. Expose buried colors: Use your buffer tube to move top layers out of the way, revealing matching blocks underneath.
3. Track bottom-layer bottleneck blocks: Pay attention to the bottom block of each tube. Different colors locked at the base of multiple tubes require multiple buffer moves to resolve.

Preventing Board Deadlocks

Deadlocks happen when multiple tubes become filled with mixed colors and no empty space remains to swap pieces.

• Focus on near-complete stacks: If a tube only needs one or two blocks to finish, prioritize all moves toward completing that stack.
• Avoid unnecessary non-matching moves: Do not place a block on a non-matching stack unless doing so unblocks a piece required for your current target color.
• Reset clogged paths: If moving a block does not open up a new match or free a tube space, move it back to its original stack and re-evaluate your sorting sequence.