What changes
Adapting the perimeter route
The edge still helps, but it no longer provides an automatic four-corner circuit.
FastStarting pace
18 × 11Board size
HardDifficulty
Adapting the perimeter routeMain skill
Rules
Rules for this mode
- Groups of blocks occupy all four corners.
- Walls, blocks, and your tail can end the run.
- A normal red ball adds 1 point and 1 growth section.
- The centre remains open.
Tactics
Three useful decisions
- Mark the final safe cell before each obstacle.
- Use inward U-turns instead of forcing the corner.
- Keep the centre available as a shared escape route.
Start
Opening plan
Learn the last safe cell before each blocked corner. Approach with an inward lane already available.
Watch for
Common mistake
Following the usual outer loop until the obstacle arrives one turn earlier than expected.
Practice
Use three runs for one change
Use the first run to learn the board. Repeat the same opening on the second run. On the third, change only the turn that caused the previous loss. This makes it easier to tell whether the problem was the route or the input.
Need the basics first?Read the control guide, then use the strategy page to improve route planning.
How to playStrategy