ROUTE field guide

How Defender Cells Change a ROUTE Solution

Read defender clusters as walls, gates, pockets, and target constraints.

Single defenders force detours

One blocked cell can change the useful shape of a path near an endpoint or edge.

Clusters create rooms

Several defenders divide the board; count openings and route pairs within each room.

Targets become constrained

A blocked neighbor reduces valid target approaches, so preserve the remaining side.

Try it on a field

Open ROUTE on iPhone and change one path at a time. Every playable field is solver-validated, so a failure is useful evidence about corridor ownership, endpoint access, or coverage.

Sources and review scope

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