Vector

1. Stay within the limit. The endpoint must land on the beacon. At the stated limit, undo or reset; another leg is never allowed. Expert must finish on exactly leg seven.
2. Preview before plotting. Select any candidate for free to see its endpoint and the next three vectors. Each vector moves 1 or 2 grid units; plotting commits the leg.
3. Explore efficiently. Each distinct route-tree leg revealed adds one planning point. Re-entering a known branch is free.
4. Edit freely. Undo and Reset route never cost points. Reset removes the visible route, not your official exploration record.
5. Check viability for +2. Check Route says only whether the current route can still succeed. It never changes or locks your route.
6. Deduce Expert airspace. Three overlapping radar returns locate two storms among six uncertain cells. A vector is blocked by a storm at its midpoint or endpoint. One optional scan costs +2.

Planning score = distinct route-tree legs revealed + 2 × route checks. On Expert, each weather scan and each blocked attempt also adds 2. Par equals the leg limit. Reaching the beacon completes the official attempt automatically; later replays are Practice and cannot replace the first score. Time is recorded quietly and shown only after completion.