Forced Expansion
Easy
Used by Smart Hint
An island blocked everywhere but one open cell has no other way to grow — that cell joins it.
- Island (land)
- Sea
- Cells that establish the pattern
- Where the conclusion lands
How it works
- This island needs one more cell, and every direction it could grow is blocked by sea except one.
- There's no other way to reach its target size — that last open cell must join it.