An Ant and a Spider use the same kind of one-space ground slide, but they have different distance rules. An Ant can continue through any number of reachable perimeter cells and stop on any legal one. A Spider must make exactly three adjacent slides and may stop only at the end of a complete three-step route.
| Question | Ant | Spider |
|---|---|---|
| Movement type | Ground slide | Ground slide |
| Distance | Any positive number | Exactly 3 steps |
| Must touch the hive each step? | Yes | Yes |
| Can cross a closed gate? | No | No |
| Can jump an empty gap? | No | No |
| Can revisit a route cell? | No useful loop needed | No; trace a genuine three-step path |
What counts as one step?
A step is a move into one adjacent empty hex. The destination must touch the hive and the doorway between source and destination must be open. Hex-coordinate distance is not a substitute for tracing the path: a cell that appears “three spaces away” may require an illegal jump or may be reachable by more or fewer actual slides.
For the Spider, label the path A → B → C. Each arrow must be a legal one-space slide. The Spider is animated along those cells in Bug Hive rather than drawn as a straight jump to the endpoint.
Why empty gaps are illegal
Sliding insects crawl along the perimeter. At every intermediate cell, the moving piece must remain in contact with at least one occupied hive hex. An isolated empty cell with no occupied neighbor is open space, not part of the crawlable edge.
This is why a Spider cannot move horizontally across a visual gap just because the final coordinate is reachable in three hex directions. It must take the real perimeter path—perhaps up first, then left twice—or the endpoint is invalid.
For a Spider, draw three consecutive adjacent cells around the actual occupied edge. If any one cell loses contact or crosses a closed gate, the whole route fails.
Both pieces obey sliding gates
When two occupied hexes sit on both sides of the doorway, the ground piece cannot squeeze through. This check applies to every intermediate Ant or Spider step. A destination can be open while the route to it remains blocked.
Temporarily remove the moving piece before checking the perimeter. Its original position becomes empty and can change which gates or contacts exist. Connectivity must also remain intact; a pinned Ant and a pinned Spider have no moves regardless of their normal range.
A Spider endpoint may have multiple routes
The engine should accept an endpoint if at least one legal three-step route reaches it. A different apparent route may be blocked without invalidating the destination. Conversely, merely reaching the coordinate in two steps does not make it legal; there must be a legal third step ending there without revisiting cells.
This route-based rule explains why a Spider often has two natural directions around the hive—clockwise and counterclockwise—but fewer endpoints than an Ant.
Strategic difference
The Ant is a global responder. Keep it free and it can usually reach whichever side becomes urgent. The Spider is a local commitment. Place it with a three-step target in mind: an early pin, a future Queen neighbor or a structural bridge you are willing to maintain.
A Spider can still be efficient when it fixes a stronger enemy piece. The fact that it has fewer destinations makes placement more important, not automatically useless. In tempo terms, trading a constrained Spider’s mobility for a flexible Ant’s mobility can favor the Spider’s owner.
Endpoint checklist
- Remove the selected piece mentally and confirm one connected hive remains.
- Choose one adjacent empty perimeter cell as step one.
- Confirm contact and an open gate at step two.
- Confirm contact and an open gate at step three.
- For the Spider, stop exactly there. For the Ant, continue or stop on any reachable legal cell.
When a Spider move looks like an Ant move shortened to three steps, that intuition is correct. When it looks like a jump to a coordinate, start tracing again.
Bug Hive is an independent game and is not affiliated with, endorsed by, or the official digital edition of Hive® or Gen42 Games.