The vulnerability of corner squares
A corner square has only two adjacent neighbors, compared to four neighbors for an interior square. Once a single isolated block lands in a corner, it becomes twice as difficult to clear.
In <a href="https://apps.aagyasharma.com/blockflow/">Block Flow</a>, dead corners rapidly infect adjacent cells, choking off workable board space.
The Corner Containment Rule
Only place shapes in corners if they fit flush against both intersecting walls. Never place an angular L-piece with its open cavity facing the corner.
- Dock solid 2x2 or 3x3 blocks cleanly into corners.
- Clear perimeter rows to unlock trapped corner cells.
- Keep at least two of the four corners completely empty.
FEATURED GAME
Experience BlockFlow
A calm, colourful block puzzle with handcrafted levels. Fit each piece, clear lines, use strategic boosters, and play at your own pace.
Frequently Asked Questions
What is the fastest way to clear a stuck corner tile?
Prioritize completing the outer row or column that shares that corner tile: as soon as the line clears, the corner is freed.