The field guide
How to solve by eye
You never need to guess the whole board at once. Reduce each puzzle to a series of small timing comparisons at the crossings.
1. Count to the crossing
Blue needs 3 beats. Red needs 3 beats too.
Mark every crossing
Ants can only bump where two paths share a square. Ignore the rest of each path until those shared squares are understood.
Count from each entrance
For one crossing, count how many beats each chain needs to arrive. If blue needs 3 and red needs 5, blue's pattern reaches it 2 positions earlier.
Slide the patterns
Offset the two chains by that timing difference. Compare the symbols that now line up: ant against ant crashes; ant against gap passes safely.
Use the tightest clue first
Solid or ant-heavy chains have fewer safe partners. Equal-distance crossings are also strong clues because the first symbols meet immediately.
Treat gaps as windows
A gap is not an empty ant slot waiting to fill — it is a safe beat where another color may cross. Look for a chain whose ants fit those windows.
Add waits last
A one-beat wait shifts the entire chain by one position. Use it when the lane assignment looks right but every crossing is consistently off by one beat.
A quick mental checklist
- 1. Which crossing has the fewest safe combinations?
- 2. What is the distance difference at that crossing?
- 3. Which pattern gives ant-versus-gap overlaps?
- 4. Does that assignment also work at its next crossing?
- 5. Is a one-beat wait enough to remove the last bump?
- 6. Lock the certain line and repeat.