What causes the checkerboard trap?
The checkerboard pattern occurs when a player scatters individual blocks across alternating cells rather than grouping them into contiguous walls.
On an 8x8 grid in <a href="https://apps.aagyasharma.com/blockflow/">Block Flow</a>, this fragmentation is lethal: no multi-cell polyomino can fit into non-adjacent single squares.
The Contiguous Wall Habit
To prevent this trap, adhere strictly to the Contiguous Wall rule: place new pieces flush against existing blocks. Treat your placements like laying bricks in a sturdy foundation.
- Never drop an isolated 1x1 block in open water.
- Fill edge crevices before building into the center.
- If a checkerboard starts forming, use a Clear Line booster immediately.
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
How do I recover if half my board is checkerboarded?
Focus on one specific row that has the fewest gaps, fill it with small pieces, and clear it to break the alternating cycle.