`ComputeToHitIsImpossible` takes the hex distance to `ceil(d / 17.0)` mapsheets, reads `getLongRange()` as mapsheets and refuses the shot when the first exceeds the second, so an Arrow IV reaches 136 hexes and not 8. The cannons are a different class with ordinary hex brackets, and indirect tube fire is refused inside one mapsheet, which is the whole of a one-sheet board. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> Change-Id: Ifa40d1b5cfaab0ab06cf2e586d147a6aae877f73