Why is the blue cross-shaped block so hard to move in Block Out Level 43?

Because the plus-sign shape blocks four directions at once. It needs room on multiple sides before it can rotate or slide, which means the surrounding L-shapes must thin first.

Is Level 43 a boss level or a sliding puzzle?

A pure sliding puzzle — no boss frames or counters. The difficulty comes entirely from the interlocking tetromino shapes, especially the large blue cross in the center.

Block Out level guide

Block Out Level 43 Walkthrough

hard 4 colors

Block Out Level 43 is a dense tetromino board centered on a large blue cross-shaped block that dominates the center-right and blocks four directions at once. Red L-shapes fill the left and lower areas, green blocks sit in the lower-right, and yellow blocks are scattered in the center-left. The solve peels from the edges inward: extract the red L-shapes first, shift the blue cross once it has room, then finish the green and yellow blocks through the bottom exits.

Board Notes

Layout: A densely packed rectangular board with large tetromino-shaped blocks. A blue cross (plus-sign shape) dominates the center-right. Red L-shaped blocks fill the left and lower areas. Green blocks in the lower-right. Yellow blocks scattered center-left. Small purple devices with `1` counters on the left wall. Multiple exits at top, bottom, and sides.
Goal: The blue cross takes up the most space and blocks four directions at once — it must move before the other large pieces can slide. The red L-shapes on the left are the first extractable pieces. The green blocks at the bottom need the bottom exit.
Opening: Start by sliding a small piece out through the top to create the first gap. Extract the red L-shaped blocks from the left side through the side exits. Once the red mass is thinner, the blue cross can shift. Edges inward: perimeter pieces first, then the center cross, then remaining blocks.
Danger Zone: Trying to move the blue cross before the surrounding L-shapes have thinned jams the board. The plus-sign shape means the cross blocks four directions simultaneously, so it needs room on multiple sides before it can rotate or slide.
Mechanics: Level 43 is another pure sliding puzzle like Level 36, but the large cross-shaped block in the center makes it harder — the plus-sign shape creates a four-way blockade that requires more perimeter clearing before the center can move.

Quick Tips for Block Out Level 43 (spoiler-free)

The blue cross blocks four directions at once — do not try to move it until the surrounding L-shapes are thinned.
Clear the red L-shapes from the left edge first to create the most room.
Think in chain clears. The best move is the one that sets up the next two moves, not just the quickest current match.

How to Solve Block Out Level 43 — Full Solution

Slide a small piece out through the top exit to create the first gap.
Extract the red L-shaped blocks from the left side through the side exits.
Thin the yellow blocks in the center-left to give the blue cross room to shift.
Rotate the blue cross-shaped block once the surrounding space is wide enough.
Slide the green blocks toward the bottom exit after the cross has moved.
Clear the remaining red and yellow fragments through the available exits.
Finish with the last block once the board is mostly empty.

Colors in this level:

Blue, Red, Green, Yellow

Common Mistakes to Avoid

Trying to force the blue cross through a narrow gap before the surrounding L-shapes are thinned — the cross needs clearance on multiple sides to move.
Ignoring the left-side red L-shapes and starting from the bottom, which leaves the center too tight for the cross to rotate.

Frequently Asked Questions

Why is the blue cross-shaped block so hard to move in Block Out Level 43?
Because the plus-sign shape blocks four directions at once. It needs room on multiple sides before it can rotate or slide, which means the surrounding L-shapes must thin first.
Is Level 43 a boss level or a sliding puzzle?
A pure sliding puzzle — no boss frames or counters. The difficulty comes entirely from the interlocking tetromino shapes, especially the large blue cross in the center.